From e796105a6fe17a9307f3936cd59763cb173462f7 Mon Sep 17 00:00:00 2001
From: Junping Du <junping_du@apache.org>
Date: Sat, 25 Mar 2017 14:02:25 -0700
Subject: [PATCH] Add 2.8.0 RELEASENOTEs.md and CHANGES.md. (cherry picked from
 commit d8e6d6df4c23aa11455c1775391b1c7883bec2ea)

---
 .../markdown/release/2.8.0/CHANGES.2.8.0.md   | 2986 +++++++++++++++++
 .../release/2.8.0/RELEASENOTES.2.8.0.md       | 1105 ++++++
 2 files changed, 4091 insertions(+)
 create mode 100644 hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/CHANGES.2.8.0.md
 create mode 100644 hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/RELEASENOTES.2.8.0.md

diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/CHANGES.2.8.0.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/CHANGES.2.8.0.md
new file mode 100644
index 00000000000..7f9bff26b99
--- /dev/null
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/CHANGES.2.8.0.md
@@ -0,0 +1,2986 @@
+
+<!---
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+-->
+# "Apache Hadoop" Changelog
+
+## Release 2.8.0 - 2017-03-17
+
+### INCOMPATIBLE CHANGES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [YARN-3241](https://issues.apache.org/jira/browse/YARN-3241) | FairScheduler handles "invalid" queue names inconsistently |  Major | fairscheduler | zhihai xu | zhihai xu |
+| [HADOOP-11731](https://issues.apache.org/jira/browse/HADOOP-11731) | Rework the changelog and releasenotes |  Major | documentation | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-11746](https://issues.apache.org/jira/browse/HADOOP-11746) | rewrite test-patch.sh |  Major | build, test | Allen Wittenauer | Allen Wittenauer |
+| [HDFS-8226](https://issues.apache.org/jira/browse/HDFS-8226) | Non-HA rollback compatibility broken |  Blocker | . | J.Andreina | J.Andreina |
+| [HADOOP-11772](https://issues.apache.org/jira/browse/HADOOP-11772) | RPC Invoker relies on static ClientCache which has synchronized(this) blocks |  Major | ipc, performance | Gopal V | Haohui Mai |
+| [YARN-2336](https://issues.apache.org/jira/browse/YARN-2336) | Fair scheduler REST api returns a missing '[' bracket JSON for deep queue tree |  Major | fairscheduler | Kenji Kikushima | Akira Ajisaka |
+| [YARN-41](https://issues.apache.org/jira/browse/YARN-41) | The RM should handle the graceful shutdown of the NM. |  Major | nodemanager, resourcemanager | Ravi Teja Ch N V | Devaraj K |
+| [HDFS-6564](https://issues.apache.org/jira/browse/HDFS-6564) | Use slf4j instead of common-logging in hdfs-client |  Major | build | Haohui Mai | Rakesh R |
+| [MAPREDUCE-6427](https://issues.apache.org/jira/browse/MAPREDUCE-6427) | Fix typo in JobHistoryEventHandler |  Minor | . | Brahma Reddy Battula | Ray Chiang |
+| [HADOOP-12269](https://issues.apache.org/jira/browse/HADOOP-12269) | Update aws-sdk dependency to 1.10.6; move to aws-sdk-s3 |  Major | fs/s3 | Thomas Demoor | Thomas Demoor |
+| [HDFS-8900](https://issues.apache.org/jira/browse/HDFS-8900) | Compact XAttrs to optimize memory footprint. |  Major | namenode | Yi Liu | Yi Liu |
+| [YARN-4087](https://issues.apache.org/jira/browse/YARN-4087) | Followup fixes after YARN-2019 regarding RM behavior when state-store error occurs |  Major | . | Jian He | Jian He |
+| [HADOOP-12416](https://issues.apache.org/jira/browse/HADOOP-12416) | Trash messages should be handled by Logger instead of being delivered on System.out |  Major | trash | Ashutosh Chauhan | Mingliang Liu |
+| [HDFS-9063](https://issues.apache.org/jira/browse/HDFS-9063) | Correctly handle snapshot path for getContentSummary |  Major | namenode | Jing Zhao | Jing Zhao |
+| [HDFS-9433](https://issues.apache.org/jira/browse/HDFS-9433) | DFS getEZForPath API on a non-existent file should throw FileNotFoundException |  Major | encryption | Rakesh R | Rakesh R |
+| [HADOOP-11252](https://issues.apache.org/jira/browse/HADOOP-11252) | RPC client does not time out by default |  Critical | ipc | Wilfred Spiegelenburg | Masatake Iwasaki |
+| [HDFS-9047](https://issues.apache.org/jira/browse/HDFS-9047) | Retire libwebhdfs |  Major | webhdfs | Allen Wittenauer | Haohui Mai |
+| [HADOOP-12651](https://issues.apache.org/jira/browse/HADOOP-12651) | Replace dev-support with wrappers to Yetus |  Major | scripts | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-12552](https://issues.apache.org/jira/browse/HADOOP-12552) | Fix undeclared/unused dependency to httpclient |  Minor | build | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-11792](https://issues.apache.org/jira/browse/HADOOP-11792) | Remove all of the CHANGES.txt files |  Major | build | Allen Wittenauer | Andrew Wang |
+| [YARN-5035](https://issues.apache.org/jira/browse/YARN-5035) | FairScheduler: Adjust maxAssign dynamically when assignMultiple is turned on |  Major | fairscheduler | Karthik Kambatla | Karthik Kambatla |
+| [HADOOP-12892](https://issues.apache.org/jira/browse/HADOOP-12892) | fix/rewrite create-release |  Blocker | build | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-13139](https://issues.apache.org/jira/browse/HADOOP-13139) | Branch-2: S3a to use thread pool that blocks clients |  Major | fs/s3 | Pieter Reuse | Pieter Reuse |
+| [HADOOP-13382](https://issues.apache.org/jira/browse/HADOOP-13382) | remove unneeded commons-httpclient dependencies from POM files in Hadoop and sub-projects |  Major | build | Matt Foley | Matt Foley |
+| [HDFS-7933](https://issues.apache.org/jira/browse/HDFS-7933) | fsck should also report decommissioning replicas. |  Major | namenode | Jitendra Nath Pandey | Xiaoyu Yao |
+| [HADOOP-13560](https://issues.apache.org/jira/browse/HADOOP-13560) | S3ABlockOutputStream to support huge (many GB) file writes |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HDFS-11048](https://issues.apache.org/jira/browse/HDFS-11048) | Audit Log should escape control characters |  Major | . | Eric Badger | Eric Badger |
+| [HADOOP-13812](https://issues.apache.org/jira/browse/HADOOP-13812) | Upgrade Tomcat to 6.0.48 |  Blocker | kms | John Zhuge | John Zhuge |
+| [HADOOP-13929](https://issues.apache.org/jira/browse/HADOOP-13929) | ADLS connector should not check in contract-test-options.xml |  Major | fs/adl, test | John Zhuge | John Zhuge |
+
+
+### IMPORTANT ISSUES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [YARN-4785](https://issues.apache.org/jira/browse/YARN-4785) | inconsistent value type of the "type" field for LeafQueueInfo in response of RM REST API - cluster/scheduler |  Major | webapp | Jayesh | Varun Vasudev |
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-8934](https://issues.apache.org/jira/browse/HADOOP-8934) | Shell command ls should include sort options |  Minor | fs | Jonathan Allen | Jonathan Allen |
+| [HADOOP-9477](https://issues.apache.org/jira/browse/HADOOP-9477) | Add posixGroups support for LDAP groups mapping service |  Major | . | Kai Zheng | Dapeng Sun |
+| [HDFS-8009](https://issues.apache.org/jira/browse/HDFS-8009) | Signal congestion on the DataNode |  Major | datanode | Haohui Mai | Haohui Mai |
+| [YARN-2901](https://issues.apache.org/jira/browse/YARN-2901) | Add errors and warning metrics page to RM, NM web UI |  Major | nodemanager, resourcemanager | Varun Vasudev | Varun Vasudev |
+| [HDFS-7891](https://issues.apache.org/jira/browse/HDFS-7891) | A block placement policy with best rack failure tolerance |  Minor | namenode | Walter Su | Walter Su |
+| [HADOOP-11843](https://issues.apache.org/jira/browse/HADOOP-11843) | Make setting up the build environment easier |  Major | build | Niels Basjes | Niels Basjes |
+| [MAPREDUCE-6284](https://issues.apache.org/jira/browse/MAPREDUCE-6284) | Add Task Attempt State API to MapReduce Application Master REST API |  Minor | . | Ryu Kobayashi | Ryu Kobayashi |
+| [HADOOP-10971](https://issues.apache.org/jira/browse/HADOOP-10971) | Add -C flag to make `hadoop fs -ls` print filenames only |  Major | fs | Ryan Williams | Kengo Seki |
+| [MAPREDUCE-6364](https://issues.apache.org/jira/browse/MAPREDUCE-6364) | Add a "Kill" link to Task Attempts page |  Minor | applicationmaster | Ryu Kobayashi | Ryu Kobayashi |
+| [MAPREDUCE-6304](https://issues.apache.org/jira/browse/MAPREDUCE-6304) | Specifying node labels when submitting MR jobs |  Major | . | Jian Fang | Naganarasimha G R |
+| [HDFS-8487](https://issues.apache.org/jira/browse/HDFS-8487) | Generalize BlockInfo in preparation of merging HDFS-7285 into trunk and branch-2 |  Major | namenode | Zhe Zhang | Zhe Zhang |
+| [HDFS-8608](https://issues.apache.org/jira/browse/HDFS-8608) | Merge HDFS-7912 to trunk and branch-2 (track BlockInfo instead of Block in UnderReplicatedBlocks and PendingReplicationBlocks) |  Major | . | Zhe Zhang | Zhe Zhang |
+| [HADOOP-5732](https://issues.apache.org/jira/browse/HADOOP-5732) | Add SFTP FileSystem |  Minor | fs | Íñigo Goiri | ramtin |
+| [HDFS-8622](https://issues.apache.org/jira/browse/HDFS-8622) | Implement GETCONTENTSUMMARY operation for WebImageViewer |  Major | . | Jagadesh Kiran N | Jagadesh Kiran N |
+| [HDFS-8155](https://issues.apache.org/jira/browse/HDFS-8155) | Support OAuth2 in WebHDFS |  Major | webhdfs | Jakob Homan | Jakob Homan |
+| [MAPREDUCE-6415](https://issues.apache.org/jira/browse/MAPREDUCE-6415) | Create a tool to combine aggregated logs into HAR files |  Major | . | Robert Kanter | Robert Kanter |
+| [HADOOP-12360](https://issues.apache.org/jira/browse/HADOOP-12360) | Create StatsD metrics2 sink |  Minor | metrics | Dave Marion | Dave Marion |
+| [YARN-261](https://issues.apache.org/jira/browse/YARN-261) | Ability to fail AM attempts |  Major | api | Jason Lowe | Rohith Sharma K S |
+| [HDFS-9184](https://issues.apache.org/jira/browse/HDFS-9184) | Logging HDFS operation's caller context into audit logs |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HDFS-9057](https://issues.apache.org/jira/browse/HDFS-9057) | allow/disallow snapshots via webhdfs |  Major | webhdfs | Allen Wittenauer | Brahma Reddy Battula |
+| [YARN-4349](https://issues.apache.org/jira/browse/YARN-4349) | Support CallerContext in YARN |  Major | . | Wangda Tan | Wangda Tan |
+| [YARN-3623](https://issues.apache.org/jira/browse/YARN-3623) | We should have a config to indicate the Timeline Service version |  Major | timelineserver | Zhijie Shen | Xuan Gong |
+| [HADOOP-12657](https://issues.apache.org/jira/browse/HADOOP-12657) | Add a option to skip newline on empty files with getMerge -nl |  Minor | . | Jan Filipiak | Kanaka Kumar Avvaru |
+| [YARN-3458](https://issues.apache.org/jira/browse/YARN-3458) | CPU resource monitoring in Windows |  Minor | nodemanager | Inigo Goiri | Inigo Goiri |
+| [HADOOP-12691](https://issues.apache.org/jira/browse/HADOOP-12691) | Add CSRF Filter for REST APIs to Hadoop Common |  Major | security | Larry McCay | Larry McCay |
+| [HADOOP-12635](https://issues.apache.org/jira/browse/HADOOP-12635) | Adding Append API support for WASB |  Major | fs/azure | Dushyanth | Dushyanth |
+| [HADOOP-12426](https://issues.apache.org/jira/browse/HADOOP-12426) | Add Entry point for Kerberos health check |  Minor | security | Steve Loughran | Steve Loughran |
+| [HDFS-9244](https://issues.apache.org/jira/browse/HDFS-9244) | Support nested encryption zones |  Major | encryption | Xiaoyu Yao | Zhe Zhang |
+| [HADOOP-12548](https://issues.apache.org/jira/browse/HADOOP-12548) | Read s3a creds from a Credential Provider |  Major | fs/s3 | Allen Wittenauer | Larry McCay |
+| [HDFS-9711](https://issues.apache.org/jira/browse/HDFS-9711) | Integrate CSRF prevention filter in WebHDFS. |  Major | datanode, namenode, webhdfs | Chris Nauroth | Chris Nauroth |
+| [HDFS-9835](https://issues.apache.org/jira/browse/HDFS-9835) | OIV: add ReverseXML processor which reconstructs an fsimage from an XML file |  Major | tools | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-9239](https://issues.apache.org/jira/browse/HDFS-9239) | DataNode Lifeline Protocol: an alternative protocol for reporting DataNode liveness |  Major | datanode, namenode | Chris Nauroth | Chris Nauroth |
+| [HADOOP-12909](https://issues.apache.org/jira/browse/HADOOP-12909) | Change ipc.Client to support asynchronous calls |  Major | ipc | Tsz Wo Nicholas Sze | Xiaobing Zhou |
+| [HDFS-9945](https://issues.apache.org/jira/browse/HDFS-9945) | Datanode command for evicting writers |  Major | datanode | Kihwal Lee | Kihwal Lee |
+| [HADOOP-13008](https://issues.apache.org/jira/browse/HADOOP-13008) | Add XFS Filter for UIs to Hadoop Common |  Major | security | Larry McCay | Larry McCay |
+| [HADOOP-13065](https://issues.apache.org/jira/browse/HADOOP-13065) | Add a new interface for retrieving FS and FC Statistics |  Major | fs | Ram Venkatesh | Mingliang Liu |
+| [HADOOP-12723](https://issues.apache.org/jira/browse/HADOOP-12723) | S3A: Add ability to plug in any AWSCredentialsProvider |  Major | fs/s3 | Steven K. Wong | Steven K. Wong |
+| [HADOOP-13226](https://issues.apache.org/jira/browse/HADOOP-13226) | Support async call retry and failover |  Major | io, ipc | Xiaobing Zhou | Tsz Wo Nicholas Sze |
+| [HADOOP-12537](https://issues.apache.org/jira/browse/HADOOP-12537) | S3A to support Amazon STS temporary credentials |  Minor | fs/s3 | Sean Mackrory | Sean Mackrory |
+| [HDFS-9804](https://issues.apache.org/jira/browse/HDFS-9804) | Allow long-running Balancer to login with keytab |  Major | balancer & mover, security | Xiao Chen | Xiao Chen |
+| [HDFS-10918](https://issues.apache.org/jira/browse/HDFS-10918) | Add a tool to get FileEncryptionInfo from CLI |  Major | encryption | Xiao Chen | Xiao Chen |
+| [HADOOP-13716](https://issues.apache.org/jira/browse/HADOOP-13716) | Add LambdaTestUtils class for tests; fix eventual consistency problem in contract test setup |  Major | test | Steve Loughran | Steve Loughran |
+| [HADOOP-14049](https://issues.apache.org/jira/browse/HADOOP-14049) | Honour AclBit flag associated to file/folder permission for Azure datalake account |  Major | fs/adl | Vishwajeet Dusane | Vishwajeet Dusane |
+| [HADOOP-14048](https://issues.apache.org/jira/browse/HADOOP-14048) | REDO operation of WASB#AtomicRename should create placeholder blob for destination folder |  Critical | fs/azure | NITIN VERMA | NITIN VERMA |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HDFS-2580](https://issues.apache.org/jira/browse/HDFS-2580) | NameNode#main(...) can make use of GenericOptionsParser. |  Minor | namenode | Harsh J | Harsh J |
+| [MAPREDUCE-5232](https://issues.apache.org/jira/browse/MAPREDUCE-5232) | log classpath and other key properties on child JVM start |  Major | mrv1, mrv2 | Sangjin Lee | Sangjin Lee |
+| [HADOOP-7713](https://issues.apache.org/jira/browse/HADOOP-7713) | dfs -count -q should label output column |  Trivial | . | Nigel Daley | Jonathan Allen |
+| [HDFS-7546](https://issues.apache.org/jira/browse/HDFS-7546) | Document, and set an accepting default for dfs.namenode.kerberos.principal.pattern |  Minor | security | Harsh J | Harsh J |
+| [HADOOP-11692](https://issues.apache.org/jira/browse/HADOOP-11692) | Improve authentication failure WARN message to avoid user confusion |  Major | ipc | Yongjun Zhang | Yongjun Zhang |
+| [HADOOP-11226](https://issues.apache.org/jira/browse/HADOOP-11226) | Add a configuration to set ipc.Client's traffic class with IPTOS\_LOWDELAY\|IPTOS\_RELIABILITY |  Major | ipc | Gopal V | Gopal V |
+| [HADOOP-11711](https://issues.apache.org/jira/browse/HADOOP-11711) | Provide a default value for AES/CTR/NoPadding CryptoCodec classes |  Minor | . | Andrew Wang | Andrew Wang |
+| [MAPREDUCE-4414](https://issues.apache.org/jira/browse/MAPREDUCE-4414) | Add main methods to JobConf and YarnConfiguration, for debug purposes |  Major | client | Harsh J | Plamen Jeliazkov |
+| [MAPREDUCE-6105](https://issues.apache.org/jira/browse/MAPREDUCE-6105) | Inconsistent configuration in property mapreduce.reduce.shuffle.merge.percent |  Trivial | . | Dongwook Kwon | Ray Chiang |
+| [HDFS-2360](https://issues.apache.org/jira/browse/HDFS-2360) | Ugly stacktrace when quota exceeds |  Minor | hdfs-client | Rajit Saha | Harsh J |
+| [MAPREDUCE-6100](https://issues.apache.org/jira/browse/MAPREDUCE-6100) | replace "mapreduce.job.credentials.binary" with MRJobConfig.MAPREDUCE\_JOB\_CREDENTIALS\_BINARY for better readability. |  Trivial | mrv2 | zhihai xu | zhihai xu |
+| [MAPREDUCE-5755](https://issues.apache.org/jira/browse/MAPREDUCE-5755) | MapTask.MapOutputBuffer#compare/swap should have @Override annotation |  Trivial | . | Tsuyoshi Ozawa | Tsuyoshi Ozawa |
+| [MAPREDUCE-4653](https://issues.apache.org/jira/browse/MAPREDUCE-4653) | TestRandomAlgorithm has an unused "import" statement |  Trivial | contrib/gridmix | Amir Sanjar | Amir Sanjar |
+| [HADOOP-11659](https://issues.apache.org/jira/browse/HADOOP-11659) | o.a.h.fs.FileSystem.Cache#remove should use a single hash map lookup |  Minor | fs | Gera Shegalov | Brahma Reddy Battula |
+| [HADOOP-11709](https://issues.apache.org/jira/browse/HADOOP-11709) | Time.NANOSECONDS\_PER\_MILLISECOND - use class-level final constant instead of method variable |  Trivial | . | Ajith S | Ajith S |
+| [HDFS-7835](https://issues.apache.org/jira/browse/HDFS-7835) | make initial sleeptime in locateFollowingBlock configurable for DFSClient. |  Major | hdfs-client | zhihai xu | zhihai xu |
+| [HDFS-7829](https://issues.apache.org/jira/browse/HDFS-7829) | Code clean up for LocatedBlock |  Minor | . | Jing Zhao | Takanobu Asanuma |
+| [MAPREDUCE-6282](https://issues.apache.org/jira/browse/MAPREDUCE-6282) | Reuse historyFileAbsolute.getFileSystem in CompletedJob#loadFullHistoryData for code optimization. |  Trivial | jobhistoryserver | zhihai xu | zhihai xu |
+| [HADOOP-11447](https://issues.apache.org/jira/browse/HADOOP-11447) | Add a more meaningful toString method to SampleStat and MutableStat |  Minor | metrics | Karthik Kambatla | Karthik Kambatla |
+| [YARN-3350](https://issues.apache.org/jira/browse/YARN-3350) | YARN RackResolver spams logs with messages at info level |  Major | . | Wilfred Spiegelenburg | Wilfred Spiegelenburg |
+| [MAPREDUCE-6239](https://issues.apache.org/jira/browse/MAPREDUCE-6239) | Consolidate TestJobConf classes in hadoop-mapreduce-client-jobclient and hadoop-mapreduce-client-core |  Minor | client | Varun Saxena | Varun Saxena |
+| [MAPREDUCE-5190](https://issues.apache.org/jira/browse/MAPREDUCE-5190) | Unnecessary condition test in RandomSampler |  Minor | mrv2 | Jingguo Yao | Jingguo Yao |
+| [MAPREDUCE-6287](https://issues.apache.org/jira/browse/MAPREDUCE-6287) | Deprecated methods in org.apache.hadoop.examples.Sort |  Minor | examples | Chao Zhang | Chao Zhang |
+| [HADOOP-11737](https://issues.apache.org/jira/browse/HADOOP-11737) | mockito's version in hadoop-nfs’ pom.xml shouldn't be specified |  Minor | nfs | Kengo Seki | Kengo Seki |
+| [YARN-2868](https://issues.apache.org/jira/browse/YARN-2868) | FairScheduler: Metric for latency to allocate first container for an application |  Major | . | Ray Chiang | Ray Chiang |
+| [HDFS-7875](https://issues.apache.org/jira/browse/HDFS-7875) | Improve log message when wrong value configured for dfs.datanode.failed.volumes.tolerated |  Trivial | datanode | nijel | nijel |
+| [HDFS-7793](https://issues.apache.org/jira/browse/HDFS-7793) | Refactor DFSOutputStream separating DataStreamer out |  Major | hdfs-client | Kai Zheng | Li Bo |
+| [HADOOP-11741](https://issues.apache.org/jira/browse/HADOOP-11741) | Add LOG.isDebugEnabled() guard for some LOG.debug() |  Major | . | Walter Su | Walter Su |
+| [MAPREDUCE-579](https://issues.apache.org/jira/browse/MAPREDUCE-579) | Streaming "slowmatch" documentation |  Trivial | contrib/streaming | Bo Adler | Harsh J |
+| [HDFS-7928](https://issues.apache.org/jira/browse/HDFS-7928) | Scanning blocks from disk during rolling upgrade startup takes a lot of time if disks are busy |  Major | datanode | Rushabh S Shah | Rushabh S Shah |
+| [HADOOP-11719](https://issues.apache.org/jira/browse/HADOOP-11719) | [Fsshell] Remove bin/hadoop reference from GenericOptionsParser default help text |  Minor | scripts | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-8004](https://issues.apache.org/jira/browse/HDFS-8004) | Use KeyProviderCryptoExtension#warmUpEncryptedKeys when creating an encryption zone |  Trivial | encryption | Andrew Wang | Andrew Wang |
+| [HDFS-7890](https://issues.apache.org/jira/browse/HDFS-7890) | Improve information on Top users for metrics in RollingWindowsManager and lower log level |  Major | . | J.Andreina | J.Andreina |
+| [HDFS-4396](https://issues.apache.org/jira/browse/HDFS-4396) | Add START\_MSG/SHUTDOWN\_MSG for ZKFC |  Major | auto-failover, ha, tools | Liang Xie | Liang Xie |
+| [HADOOP-11660](https://issues.apache.org/jira/browse/HADOOP-11660) | Add support for hardware crc of HDFS checksums on ARM aarch64 architecture |  Minor | native | Edward Nevill | Edward Nevill |
+| [HDFS-7645](https://issues.apache.org/jira/browse/HDFS-7645) | Rolling upgrade is restoring blocks from trash multiple times |  Major | datanode | Nathan Roberts | Keisuke Ogiwara |
+| [HDFS-3918](https://issues.apache.org/jira/browse/HDFS-3918) | EditLogTailer shouldn't log WARN when other node is in standby mode |  Major | ha | Todd Lipcon | Todd Lipcon |
+| [HDFS-7944](https://issues.apache.org/jira/browse/HDFS-7944) | Minor cleanup of BlockPoolManager#getAllNamenodeThreads |  Minor | . | Arpit Agarwal | Arpit Agarwal |
+| [YARN-3258](https://issues.apache.org/jira/browse/YARN-3258) | FairScheduler: Need to add more logging to investigate allocations |  Minor | fairscheduler | Anubhav Dhoot | Anubhav Dhoot |
+| [HDFS-7671](https://issues.apache.org/jira/browse/HDFS-7671) | hdfs user guide should point to the common rack awareness doc |  Major | documentation | Allen Wittenauer | Kai Sasaki |
+| [YARN-3412](https://issues.apache.org/jira/browse/YARN-3412) | RM tests should use MockRM where possible |  Major | resourcemanager, test | Karthik Kambatla | Karthik Kambatla |
+| [YARN-3428](https://issues.apache.org/jira/browse/YARN-3428) | Debug log resources to be localized for a container |  Trivial | nodemanager | Karthik Kambatla | Karthik Kambatla |
+| [YARN-3424](https://issues.apache.org/jira/browse/YARN-3424) | Change logs for ContainerMonitorImpl's resourse monitoring from info to debug |  Major | nodemanager | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-3248](https://issues.apache.org/jira/browse/YARN-3248) | Display count of nodes blacklisted by apps in the web UI |  Major | capacityscheduler, resourcemanager | Varun Vasudev | Varun Vasudev |
+| [HDFS-7978](https://issues.apache.org/jira/browse/HDFS-7978) | Add LOG.isDebugEnabled() guard for some LOG.debug(..) |  Major | . | Walter Su | Walter Su |
+| [HDFS-8008](https://issues.apache.org/jira/browse/HDFS-8008) | Support client-side back off when the datanodes are congested |  Major | hdfs-client | Haohui Mai | Haohui Mai |
+| [HDFS-7888](https://issues.apache.org/jira/browse/HDFS-7888) | Change DataStreamer/DFSOutputStream/DFSPacket for convenience of subclassing |  Minor | hdfs-client | Li Bo | Li Bo |
+| [HDFS-8035](https://issues.apache.org/jira/browse/HDFS-8035) | Move checkBlocksProperlyReplicated() in FSNamesystem to BlockManager |  Minor | namenode | Haohui Mai | Haohui Mai |
+| [HADOOP-9805](https://issues.apache.org/jira/browse/HADOOP-9805) | Refactor RawLocalFileSystem#rename for improved testability. |  Minor | fs, test | Chris Nauroth | Jean-Pierre Matsumoto |
+| [HADOOP-11785](https://issues.apache.org/jira/browse/HADOOP-11785) | Reduce number of listStatus operation in distcp buildListing() |  Minor | tools/distcp | Zoran Dimitrijevic | Zoran Dimitrijevic |
+| [HADOOP-11717](https://issues.apache.org/jira/browse/HADOOP-11717) | Add Redirecting WebSSO behavior with JWT Token in Hadoop Auth |  Major | security | Larry McCay | Larry McCay |
+| [YARN-3294](https://issues.apache.org/jira/browse/YARN-3294) | Allow dumping of Capacity Scheduler debug logs via web UI for a fixed time period |  Major | capacityscheduler | Varun Vasudev | Varun Vasudev |
+| [HDFS-8073](https://issues.apache.org/jira/browse/HDFS-8073) | Split BlockPlacementPolicyDefault.chooseTarget(..) so it can be easily overrided. |  Trivial | namenode | Walter Su | Walter Su |
+| [HDFS-8076](https://issues.apache.org/jira/browse/HDFS-8076) | Code cleanup for DFSInputStream: use offset instead of LocatedBlock when possible |  Major | . | Zhe Zhang | Zhe Zhang |
+| [HDFS-7979](https://issues.apache.org/jira/browse/HDFS-7979) | Initialize block report IDs with a random number |  Minor | datanode | Andrew Wang | Andrew Wang |
+| [HDFS-8101](https://issues.apache.org/jira/browse/HDFS-8101) | DFSClient use of non-constant DFSConfigKeys pulls in WebHDFS classes at runtime |  Minor | hdfs-client | Sean Busbey | Sean Busbey |
+| [YARN-3293](https://issues.apache.org/jira/browse/YARN-3293) | Track and display capacity scheduler health metrics in web UI |  Major | capacityscheduler | Varun Vasudev | Varun Vasudev |
+| [MAPREDUCE-6291](https://issues.apache.org/jira/browse/MAPREDUCE-6291) | Correct mapred queue usage command |  Minor | client | Brahma Reddy Battula | Brahma Reddy Battula |
+| [MAPREDUCE-6307](https://issues.apache.org/jira/browse/MAPREDUCE-6307) | Remove property mapreduce.tasktracker.taskmemorymanager.monitoringinterval |  Minor | . | Akira Ajisaka | J.Andreina |
+| [YARN-3348](https://issues.apache.org/jira/browse/YARN-3348) | Add a 'yarn top' tool to help understand cluster usage |  Major | resourcemanager | Varun Vasudev | Varun Vasudev |
+| [YARN-3469](https://issues.apache.org/jira/browse/YARN-3469) | ZKRMStateStore: Avoid setting watches that are not required |  Minor | . | Jun Gong | Jun Gong |
+| [HDFS-8117](https://issues.apache.org/jira/browse/HDFS-8117) | More accurate verification in SimulatedFSDataset: replace DEFAULT\_DATABYTE with patterned data |  Major | . | Zhe Zhang | Zhe Zhang |
+| [HDFS-8144](https://issues.apache.org/jira/browse/HDFS-8144) | Split TestLazyPersistFiles into multiple tests |  Major | test | Arpit Agarwal | Arpit Agarwal |
+| [YARN-3404](https://issues.apache.org/jira/browse/YARN-3404) | View the queue name to YARN Application page |  Minor | . | Ryu Kobayashi | Ryu Kobayashi |
+| [YARN-3451](https://issues.apache.org/jira/browse/YARN-3451) | Add start time and Elapsed in ApplicationAttemptReport and display the same in RMAttemptBlock WebUI |  Major | api, webapp | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-7863](https://issues.apache.org/jira/browse/HDFS-7863) | Missing description of some methods and parameters in javadoc of FSDirDeleteOp |  Minor | . | Yongjun Zhang | Brahma Reddy Battula |
+| [HDFS-8152](https://issues.apache.org/jira/browse/HDFS-8152) | Refactoring of lazy persist storage cases |  Major | test | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8133](https://issues.apache.org/jira/browse/HDFS-8133) | Improve readability of deleted block check |  Major | namenode | Daryn Sharp | Daryn Sharp |
+| [HADOOP-11812](https://issues.apache.org/jira/browse/HADOOP-11812) | Implement listLocatedStatus for ViewFileSystem to speed up split calculation |  Blocker | fs | Gera Shegalov | Gera Shegalov |
+| [MAPREDUCE-6297](https://issues.apache.org/jira/browse/MAPREDUCE-6297) | Task Id of the failed task in diagnostics should link to the task page |  Minor | jobhistoryserver | Siqi Li | Siqi Li |
+| [HADOOP-11827](https://issues.apache.org/jira/browse/HADOOP-11827) | Speed-up distcp buildListing() using threadpool |  Major | tools/distcp | Zoran Dimitrijevic | Zoran Dimitrijevic |
+| [YARN-3494](https://issues.apache.org/jira/browse/YARN-3494) | Expose AM resource limit and usage in QueueMetrics |  Major | . | Jian He | Rohith Sharma K S |
+| [YARN-3503](https://issues.apache.org/jira/browse/YARN-3503) | Expose disk utilization percentage and bad local and log dir counts on NM via JMX |  Major | nodemanager | Varun Vasudev | Varun Vasudev |
+| [YARN-3410](https://issues.apache.org/jira/browse/YARN-3410) | YARN admin should be able to remove individual application records from RMStateStore |  Critical | resourcemanager, yarn | Wangda Tan | Rohith Sharma K S |
+| [HDFS-8215](https://issues.apache.org/jira/browse/HDFS-8215) | Refactor NamenodeFsck#check method |  Minor | namenode | Takanobu Asanuma | Takanobu Asanuma |
+| [YARN-3511](https://issues.apache.org/jira/browse/YARN-3511) | Add errors and warnings page to ATS |  Major | timelineserver | Varun Vasudev | Varun Vasudev |
+| [HDFS-8176](https://issues.apache.org/jira/browse/HDFS-8176) | Record from/to snapshots in audit log for snapshot diff report |  Minor | snapshots | J.Andreina | J.Andreina |
+| [YARN-3406](https://issues.apache.org/jira/browse/YARN-3406) | Display count of running containers in the RM's Web UI |  Minor | . | Ryu Kobayashi | Ryu Kobayashi |
+| [HADOOP-11357](https://issues.apache.org/jira/browse/HADOOP-11357) | Print information of the build enviornment in test-patch.sh |  Minor | scripts | Haohui Mai | Allen Wittenauer |
+| [HDFS-8204](https://issues.apache.org/jira/browse/HDFS-8204) | Mover/Balancer should not schedule two replicas to the same DN |  Minor | balancer & mover | Walter Su | Walter Su |
+| [HDFS-8280](https://issues.apache.org/jira/browse/HDFS-8280) | Code Cleanup in DFSInputStream |  Minor | . | Jing Zhao | Jing Zhao |
+| [HDFS-8283](https://issues.apache.org/jira/browse/HDFS-8283) | DataStreamer cleanup and some minor improvement |  Minor | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-5574](https://issues.apache.org/jira/browse/HDFS-5574) | Remove buffer copy in BlockReader.skip |  Trivial | . | Binglin Chang | Binglin Chang |
+| [HDFS-7770](https://issues.apache.org/jira/browse/HDFS-7770) | Need document for storage type label of data node storage locations under dfs.datanode.data.dir |  Major | documentation | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-8200](https://issues.apache.org/jira/browse/HDFS-8200) | Refactor FSDirStatAndListingOp |  Major | . | Haohui Mai | Haohui Mai |
+| [YARN-3363](https://issues.apache.org/jira/browse/YARN-3363) | add localization and container launch time to ContainerMetrics at NM to show these timing information for each active container. |  Major | nodemanager | zhihai xu | zhihai xu |
+| [HDFS-7397](https://issues.apache.org/jira/browse/HDFS-7397) | Add more detail to the documentation for the conf key "dfs.client.read.shortcircuit.streams.cache.size" |  Minor | hdfs-client | Tsz Wo Nicholas Sze | Brahma Reddy Battula |
+| [YARN-2980](https://issues.apache.org/jira/browse/YARN-2980) | Move health check script related functionality to hadoop-common |  Blocker | . | Ming Ma | Varun Saxena |
+| [HADOOP-11911](https://issues.apache.org/jira/browse/HADOOP-11911) | test-patch should allow configuration of default branch |  Minor | . | Sean Busbey | Sean Busbey |
+| [HDFS-7758](https://issues.apache.org/jira/browse/HDFS-7758) | Retire FsDatasetSpi#getVolumes() and use FsDatasetSpi#getVolumeRefs() instead |  Major | datanode | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HADOOP-11925](https://issues.apache.org/jira/browse/HADOOP-11925) | backport trunk's smart-apply-patch.sh to branch-2 |  Major | scripts | Allen Wittenauer | Allen Wittenauer |
+| [MAPREDUCE-6192](https://issues.apache.org/jira/browse/MAPREDUCE-6192) | Create unit test to automatically compare MR related classes and mapred-default.xml |  Minor | . | Ray Chiang | Ray Chiang |
+| [HADOOP-11813](https://issues.apache.org/jira/browse/HADOOP-11813) | releasedocmaker.py should use today's date instead of unreleased |  Minor | build | Allen Wittenauer | Darrell Taylor |
+| [YARN-3491](https://issues.apache.org/jira/browse/YARN-3491) | PublicLocalizer#addResource is too slow. |  Critical | nodemanager | zhihai xu | zhihai xu |
+| [MAPREDUCE-6279](https://issues.apache.org/jira/browse/MAPREDUCE-6279) | AM should explicity exit JVM after all services have stopped |  Major | . | Jason Lowe | Eric Payne |
+| [HDFS-8108](https://issues.apache.org/jira/browse/HDFS-8108) | Fsck should provide the info on mandatory option to be used along with "-blocks , -locations and -racks" |  Trivial | documentation | J.Andreina | J.Andreina |
+| [HDFS-8207](https://issues.apache.org/jira/browse/HDFS-8207) | Improper log message when blockreport interval compared with initial delay |  Minor | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [MAPREDUCE-6079](https://issues.apache.org/jira/browse/MAPREDUCE-6079) | Rename JobImpl#username to reporterUserName |  Major | . | Tsuyoshi Ozawa | Tsuyoshi Ozawa |
+| [HDFS-8209](https://issues.apache.org/jira/browse/HDFS-8209) | Support different number of datanode directories in MiniDFSCluster. |  Minor | test | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [YARN-3169](https://issues.apache.org/jira/browse/YARN-3169) | Drop YARN's overview document |  Major | documentation | Allen Wittenauer | Brahma Reddy Battula |
+| [YARN-2784](https://issues.apache.org/jira/browse/YARN-2784) | Make POM project names consistent |  Minor | build | Rohith Sharma K S | Rohith Sharma K S |
+| [MAPREDUCE-5981](https://issues.apache.org/jira/browse/MAPREDUCE-5981) | Log levels of certain MR logs can be changed to DEBUG |  Major | . | Varun Saxena | Varun Saxena |
+| [HADOOP-6842](https://issues.apache.org/jira/browse/HADOOP-6842) | "hadoop fs -text" does not give a useful text representation of MapWritable objects |  Major | io | Steven K. Wong | Akira Ajisaka |
+| [YARN-20](https://issues.apache.org/jira/browse/YARN-20) | More information for "yarn.resourcemanager.webapp.address" in yarn-default.xml |  Trivial | documentation, resourcemanager | Nemon Lou | Bartosz Ługowski |
+| [HDFS-5640](https://issues.apache.org/jira/browse/HDFS-5640) | Add snapshot methods to FileContext. |  Major | hdfs-client, snapshots | Chris Nauroth | Rakesh R |
+| [HDFS-8284](https://issues.apache.org/jira/browse/HDFS-8284) | Update documentation about how to use HTrace with HDFS |  Major | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-7433](https://issues.apache.org/jira/browse/HDFS-7433) | Optimize performance of DatanodeManager's node map |  Critical | namenode | Daryn Sharp | Daryn Sharp |
+| [MAPREDUCE-5248](https://issues.apache.org/jira/browse/MAPREDUCE-5248) | Let NNBenchWithoutMR specify the replication factor for its test |  Minor | client, test | Erik Paulson | Erik Paulson |
+| [HADOOP-9737](https://issues.apache.org/jira/browse/HADOOP-9737) | JarFinder#getJar should delete the jar file upon destruction of the JVM |  Major | util | Esteban Gutierrez | Jean-Baptiste Onofré |
+| [YARN-1050](https://issues.apache.org/jira/browse/YARN-1050) | Document the Fair Scheduler REST API |  Major | documentation, fairscheduler | Sandy Ryza | Kenji Kikushima |
+| [YARN-3271](https://issues.apache.org/jira/browse/YARN-3271) | FairScheduler: Move tests related to max-runnable-apps from TestFairScheduler to TestAppRunnability |  Major | . | Karthik Kambatla | nijel |
+| [YARN-2206](https://issues.apache.org/jira/browse/YARN-2206) | Update document for applications REST API response examples |  Minor | documentation | Kenji Kikushima | Brahma Reddy Battula |
+| [HDFS-6757](https://issues.apache.org/jira/browse/HDFS-6757) | Simplify lease manager with INodeID |  Major | . | Haohui Mai | Haohui Mai |
+| [HDFS-8327](https://issues.apache.org/jira/browse/HDFS-8327) | Simplify quota calculations for snapshots and truncate |  Major | . | Haohui Mai | Haohui Mai |
+| [YARN-1287](https://issues.apache.org/jira/browse/YARN-1287) | Consolidate MockClocks |  Major | . | Sandy Ryza | Sebastian Wong |
+| [HDFS-8357](https://issues.apache.org/jira/browse/HDFS-8357) | Consolidate parameters of INode.CleanSubtree() into a parameter objects. |  Major | . | Haohui Mai | Li Lu |
+| [HADOOP-11950](https://issues.apache.org/jira/browse/HADOOP-11950) | Add cli option to test-patch to set the project-under-test |  Minor | . | Sean Busbey | Sean Busbey |
+| [HADOOP-11948](https://issues.apache.org/jira/browse/HADOOP-11948) | test-patch's issue matching regex should be configurable. |  Major | . | Sean Busbey | Sean Busbey |
+| [MAPREDUCE-5465](https://issues.apache.org/jira/browse/MAPREDUCE-5465) | Tasks are often killed before they exit on their own |  Major | mr-am, mrv2 | Radim Kolar | Ming Ma |
+| [YARN-3513](https://issues.apache.org/jira/browse/YARN-3513) | Remove unused variables in ContainersMonitorImpl and add debug log for overall resource usage by all containers |  Trivial | nodemanager | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-8255](https://issues.apache.org/jira/browse/HDFS-8255) | Rename getBlockReplication to getPreferredBlockReplication |  Major | . | Zhe Zhang | Zhe Zhang |
+| [YARN-3613](https://issues.apache.org/jira/browse/YARN-3613) | TestContainerManagerSecurity should init and start Yarn cluster in setup instead of individual methods |  Minor | test | Karthik Kambatla | nijel |
+| [HDFS-6184](https://issues.apache.org/jira/browse/HDFS-6184) | Capture NN's thread dump when it fails over |  Major | namenode | Ming Ma | Ming Ma |
+| [YARN-3539](https://issues.apache.org/jira/browse/YARN-3539) | Compatibility doc to state that ATS v1 is a stable REST API |  Major | documentation | Steve Loughran | Steve Loughran |
+| [HADOOP-9723](https://issues.apache.org/jira/browse/HADOOP-9723) | Improve error message when hadoop archive output path already exists |  Trivial | . | Stephen Chu | Yongjun Zhang |
+| [HADOOP-11713](https://issues.apache.org/jira/browse/HADOOP-11713) | ViewFileSystem should support snapshot methods. |  Major | fs | Chris Nauroth | Rakesh R |
+| [HDFS-8350](https://issues.apache.org/jira/browse/HDFS-8350) | Remove old webhdfs.xml and other outdated documentation stuff |  Major | documentation | Akira Ajisaka | Brahma Reddy Battula |
+| [HADOOP-11960](https://issues.apache.org/jira/browse/HADOOP-11960) | Enable Azure-Storage Client Side logging. |  Major | tools | Dushyanth | Dushyanth |
+| [HDFS-6888](https://issues.apache.org/jira/browse/HDFS-6888) | Allow selectively audit logging ops |  Major | . | Kihwal Lee | Chen He |
+| [HDFS-8397](https://issues.apache.org/jira/browse/HDFS-8397) | Refactor the error handling code in DataStreamer |  Minor | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8394](https://issues.apache.org/jira/browse/HDFS-8394) | Move getAdditionalBlock() and related functionalities into a separate class |  Major | . | Haohui Mai | Haohui Mai |
+| [HADOOP-11939](https://issues.apache.org/jira/browse/HADOOP-11939) | Deprecate DistCpV1 and Logalyzer |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-4185](https://issues.apache.org/jira/browse/HDFS-4185) | Add a metric for number of active leases |  Major | namenode | Kihwal Lee | Rakesh R |
+| [HADOOP-1540](https://issues.apache.org/jira/browse/HADOOP-1540) | Support file exclusion list in distcp |  Minor | util | Senthil Subramanian | Rich Haase |
+| [HADOOP-11103](https://issues.apache.org/jira/browse/HADOOP-11103) | Clean up RemoteException |  Trivial | ipc | Sean Busbey | Sean Busbey |
+| [HDFS-8131](https://issues.apache.org/jira/browse/HDFS-8131) | Implement a space balanced block placement policy |  Minor | namenode | Liu Shaohui | Liu Shaohui |
+| [HADOOP-11970](https://issues.apache.org/jira/browse/HADOOP-11970) | Replace uses of ThreadLocal\<Random\> with JDK7 ThreadLocalRandom |  Major | . | Sean Busbey | Sean Busbey |
+| [HADOOP-11995](https://issues.apache.org/jira/browse/HADOOP-11995) | Make jetty version configurable from the maven command line |  Trivial | build, ld | sriharsha devineni | sriharsha devineni |
+| [HDFS-4383](https://issues.apache.org/jira/browse/HDFS-4383) | Document the lease limits |  Minor | . | Eli Collins | Mohammad Arshad |
+| [HADOOP-10366](https://issues.apache.org/jira/browse/HADOOP-10366) | Add whitespaces between the classes for values in core-default.xml to fit better in browser |  Minor | documentation | Chengwei Yang | Kanaka Kumar Avvaru |
+| [HADOOP-11594](https://issues.apache.org/jira/browse/HADOOP-11594) | Improve the readability of site index of documentation |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-160](https://issues.apache.org/jira/browse/YARN-160) | nodemanagers should obtain cpu/memory values from underlying OS |  Major | nodemanager | Alejandro Abdelnur | Varun Vasudev |
+| [HADOOP-11242](https://issues.apache.org/jira/browse/HADOOP-11242) | Record the time of calling in tracing span of IPC server |  Minor | ipc | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-3722](https://issues.apache.org/jira/browse/YARN-3722) | Merge multiple TestWebAppUtils into o.a.h.yarn.webapp.util.TestWebAppUtils |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-11894](https://issues.apache.org/jira/browse/HADOOP-11894) | Bump the version of Apache HTrace to 3.2.0-incubating |  Major | . | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-3489](https://issues.apache.org/jira/browse/YARN-3489) | RMServerUtils.validateResourceRequests should only obtain queue info once |  Major | resourcemanager | Jason Lowe | Varun Saxena |
+| [HDFS-8443](https://issues.apache.org/jira/browse/HDFS-8443) | Document dfs.namenode.service.handler.count in hdfs-site.xml |  Major | documentation | Akira Ajisaka | J.Andreina |
+| [YARN-3547](https://issues.apache.org/jira/browse/YARN-3547) | FairScheduler: Apps that have no resource demand should not participate scheduling |  Major | fairscheduler | Xianyin Xin | Xianyin Xin |
+| [YARN-3713](https://issues.apache.org/jira/browse/YARN-3713) | Remove duplicate function call storeContainerDiagnostics in ContainerDiagnosticsUpdateTransition |  Minor | nodemanager | zhihai xu | zhihai xu |
+| [HADOOP-12043](https://issues.apache.org/jira/browse/HADOOP-12043) | Display warning if defaultFs is not set when running fs commands. |  Minor | fs | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [YARN-3467](https://issues.apache.org/jira/browse/YARN-3467) | Expose allocatedMB, allocatedVCores, and runningContainers metrics on running Applications in RM Web UI |  Minor | webapp, yarn | Anthony Rojas | Anubhav Dhoot |
+| [HDFS-8490](https://issues.apache.org/jira/browse/HDFS-8490) | Typo in trace enabled log in ExceptionHandler of WebHDFS |  Trivial | webhdfs | Jakob Homan | Archana T |
+| [HDFS-8521](https://issues.apache.org/jira/browse/HDFS-8521) | Add @VisibleForTesting annotation to {{BlockPoolSlice#selectReplicaToDelete}} |  Trivial | . | Colin P. McCabe | Colin P. McCabe |
+| [MAPREDUCE-6174](https://issues.apache.org/jira/browse/MAPREDUCE-6174) | Combine common stream code into parent class for InMemoryMapOutput and OnDiskMapOutput. |  Major | mrv2 | Eric Payne | Eric Payne |
+| [HDFS-8532](https://issues.apache.org/jira/browse/HDFS-8532) | Make the visibility of DFSOutputStream#streamer member variable to private |  Trivial | . | Rakesh R | Rakesh R |
+| [HDFS-8535](https://issues.apache.org/jira/browse/HDFS-8535) | Clarify that dfs usage in dfsadmin -report output includes all block replicas. |  Minor | documentation | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [MAPREDUCE-6383](https://issues.apache.org/jira/browse/MAPREDUCE-6383) | Pi job (QuasiMonteCarlo) should not try to read the results file if its job fails |  Major | examples | Harsh J | Harsh J |
+| [YARN-3259](https://issues.apache.org/jira/browse/YARN-3259) | FairScheduler: Trigger fairShare updates on node events |  Major | fairscheduler | Anubhav Dhoot | Anubhav Dhoot |
+| [HADOOP-12059](https://issues.apache.org/jira/browse/HADOOP-12059) | S3Credentials should support use of CredentialProvider |  Major | fs/s3 | Sean Busbey | Sean Busbey |
+| [MAPREDUCE-6354](https://issues.apache.org/jira/browse/MAPREDUCE-6354) | ShuffleHandler should be able to log shuffle connections |  Major | . | Chang Li | Chang Li |
+| [HADOOP-12055](https://issues.apache.org/jira/browse/HADOOP-12055) | Deprecate usage of NativeIO#link |  Major | native | Andrew Wang | Andrew Wang |
+| [HDFS-8432](https://issues.apache.org/jira/browse/HDFS-8432) | Introduce a minimum compatible layout version to allow downgrade in more rolling upgrade use cases. |  Major | namenode, rolling upgrades | Chris Nauroth | Chris Nauroth |
+| [HDFS-8116](https://issues.apache.org/jira/browse/HDFS-8116) | Cleanup uncessary if LOG.isDebugEnabled() from RollingWindowManager |  Trivial | namenode | Xiaoyu Yao | Brahma Reddy Battula |
+| [YARN-2716](https://issues.apache.org/jira/browse/YARN-2716) | Refactor ZKRMStateStore retry code with Apache Curator |  Major | . | Jian He | Karthik Kambatla |
+| [HDFS-8553](https://issues.apache.org/jira/browse/HDFS-8553) | Document hdfs class path options |  Major | documentation | Xiaoyu Yao | Brahma Reddy Battula |
+| [YARN-3786](https://issues.apache.org/jira/browse/YARN-3786) | Document yarn class path options |  Major | documentation | Brahma Reddy Battula | Brahma Reddy Battula |
+| [MAPREDUCE-6392](https://issues.apache.org/jira/browse/MAPREDUCE-6392) | Document mapred class path options |  Major | documentation | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-8549](https://issues.apache.org/jira/browse/HDFS-8549) | Abort the balancer if an upgrade is in progress |  Major | balancer & mover | Andrew Wang | Andrew Wang |
+| [HDFS-8573](https://issues.apache.org/jira/browse/HDFS-8573) | Move creation of restartMeta file logic from BlockReceiver to ReplicaInPipeline |  Major | datanode | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HADOOP-11971](https://issues.apache.org/jira/browse/HADOOP-11971) | Move test utilities for tracing from hadoop-hdfs to hadoop-common |  Minor | tracing | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8361](https://issues.apache.org/jira/browse/HDFS-8361) | Choose SSD over DISK in block placement |  Major | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [YARN-3789](https://issues.apache.org/jira/browse/YARN-3789) | Improve logs for LeafQueue#activateApplications() |  Minor | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-8606](https://issues.apache.org/jira/browse/HDFS-8606) | Cleanup DFSOutputStream by removing unwanted changes |  Minor | hdfs-client | Rakesh R | Rakesh R |
+| [YARN-3148](https://issues.apache.org/jira/browse/YARN-3148) | Allow CORS related headers to passthrough in WebAppProxyServlet |  Major | . | Prakash Ramachandran | Varun Saxena |
+| [HDFS-8589](https://issues.apache.org/jira/browse/HDFS-8589) | Fix unused imports in BPServiceActor and BlockReportLeaseManager |  Trivial | . | Colin P. McCabe | Colin P. McCabe |
+| [HADOOP-7139](https://issues.apache.org/jira/browse/HADOOP-7139) | Allow appending to existing SequenceFiles |  Major | io | Stephen Rose | Kanaka Kumar Avvaru |
+| [HDFS-8605](https://issues.apache.org/jira/browse/HDFS-8605) | Merge Refactor of DFSOutputStream from HDFS-7285 branch |  Major | . | Vinayakumar B | Vinayakumar B |
+| [MAPREDUCE-6395](https://issues.apache.org/jira/browse/MAPREDUCE-6395) | Improve the commit failure messages in MRAppMaster recovery |  Major | applicationmaster | Gera Shegalov | Brahma Reddy Battula |
+| [HDFS-8582](https://issues.apache.org/jira/browse/HDFS-8582) | Support getting a list of reconfigurable config properties and do not generate spurious reconfig warnings |  Minor | datanode, hdfs-client | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [MAPREDUCE-6316](https://issues.apache.org/jira/browse/MAPREDUCE-6316) | Task Attempt List entries should link to the task overview |  Major | . | Siqi Li | Siqi Li |
+| [MAPREDUCE-6305](https://issues.apache.org/jira/browse/MAPREDUCE-6305) | AM/Task log page should be able to link back to the job |  Major | . | Siqi Li | Siqi Li |
+| [YARN-3834](https://issues.apache.org/jira/browse/YARN-3834) | Scrub debug logging of tokens during resource localization. |  Major | nodemanager | Chris Nauroth | Chris Nauroth |
+| [MAPREDUCE-6408](https://issues.apache.org/jira/browse/MAPREDUCE-6408) | Queue name and user name should be printed on the job page |  Major | applicationmaster | Siqi Li | Siqi Li |
+| [HDFS-8639](https://issues.apache.org/jira/browse/HDFS-8639) | Option for HTTP port of NameNode by MiniDFSClusterManager |  Minor | test | Kai Sasaki | Kai Sasaki |
+| [YARN-3360](https://issues.apache.org/jira/browse/YARN-3360) | Add JMX metrics to TimelineDataManager |  Major | timelineserver | Jason Lowe | Jason Lowe |
+| [HADOOP-12049](https://issues.apache.org/jira/browse/HADOOP-12049) | Control http authentication cookie persistence via configuration |  Major | security | Benoy Antony | Huizhi Lu |
+| [HDFS-8462](https://issues.apache.org/jira/browse/HDFS-8462) | Implement GETXATTRS and LISTXATTRS operations for WebImageViewer |  Major | . | Akira Ajisaka | Jagadesh Kiran N |
+| [HDFS-8640](https://issues.apache.org/jira/browse/HDFS-8640) | Make reserved RBW space visible through JMX |  Major | . | Kanaka Kumar Avvaru | Kanaka Kumar Avvaru |
+| [HDFS-8546](https://issues.apache.org/jira/browse/HDFS-8546) | Use try with resources in DataStorage and Storage |  Minor | datanode | Andrew Wang | Andrew Wang |
+| [HADOOP-11807](https://issues.apache.org/jira/browse/HADOOP-11807) | add a lint mode to releasedocmaker |  Minor | build, documentation, yetus | Allen Wittenauer | ramtin |
+| [HDFS-8653](https://issues.apache.org/jira/browse/HDFS-8653) | Code cleanup for DatanodeManager, DatanodeDescriptor and DatanodeStorageInfo |  Major | . | Zhe Zhang | Zhe Zhang |
+| [HDFS-8659](https://issues.apache.org/jira/browse/HDFS-8659) | Block scanner INFO message is spamming logs |  Major | datanode | Yongjun Zhang | Yongjun Zhang |
+| [MAPREDUCE-6384](https://issues.apache.org/jira/browse/MAPREDUCE-6384) | Add the last reporting reducer info for too many fetch failure diagnostics |  Major | . | Chang Li | Chang Li |
+| [HADOOP-12158](https://issues.apache.org/jira/browse/HADOOP-12158) | Improve error message in TestCryptoStreamsWithOpensslAesCtrCryptoCodec when OpenSSL is not installed |  Trivial | test | Andrew Wang | Andrew Wang |
+| [HADOOP-12172](https://issues.apache.org/jira/browse/HADOOP-12172) | FsShell mkdir -p makes an unnecessary check for the existence of the parent. |  Minor | fs | Chris Nauroth | Chris Nauroth |
+| [HDFS-8703](https://issues.apache.org/jira/browse/HDFS-8703) | Merge refactor of DFSInputStream from ErasureCoding branch |  Major | . | Vinayakumar B | Vinayakumar B |
+| [HDFS-8709](https://issues.apache.org/jira/browse/HDFS-8709) | Clarify automatic sync in FSEditLog#logEdit |  Minor | . | Andrew Wang | Andrew Wang |
+| [HADOOP-12045](https://issues.apache.org/jira/browse/HADOOP-12045) | Enable LocalFileSystem#setTimes to change atime |  Minor | fs | Kazuho Fujii | Kazuho Fujii |
+| [HADOOP-12185](https://issues.apache.org/jira/browse/HADOOP-12185) | NetworkTopology is not efficient adding/getting/removing nodes |  Major | . | Inigo Goiri | Inigo Goiri |
+| [HADOOP-12135](https://issues.apache.org/jira/browse/HADOOP-12135) | cleanup releasedocmaker |  Major | yetus | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-12195](https://issues.apache.org/jira/browse/HADOOP-12195) | Add annotation to package-info.java file to workaround MCOMPILER-205 |  Trivial | . | Andrew Wang | Andrew Wang |
+| [HADOOP-12193](https://issues.apache.org/jira/browse/HADOOP-12193) | Rename Touchz.java to Touch.java |  Trivial | . | Andrew Wang | Andrew Wang |
+| [HDFS-8711](https://issues.apache.org/jira/browse/HDFS-8711) | setSpaceQuota command should print the available storage type when input storage type is wrong |  Major | hdfs-client | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HDFS-8712](https://issues.apache.org/jira/browse/HDFS-8712) | Remove "public" and "abstract" modifiers in FsVolumeSpi and FsDatasetSpi |  Trivial | . | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HADOOP-12194](https://issues.apache.org/jira/browse/HADOOP-12194) | Support for incremental generation in the protoc plugin |  Major | . | Andrew Wang | Andrew Wang |
+| [HADOOP-12180](https://issues.apache.org/jira/browse/HADOOP-12180) | Move ResourceCalculatorPlugin from YARN to Common |  Major | util | Chris Douglas | Chris Douglas |
+| [HADOOP-12210](https://issues.apache.org/jira/browse/HADOOP-12210) | Collect network usage on the node |  Major | . | Robert Grandl | Robert Grandl |
+| [YARN-3069](https://issues.apache.org/jira/browse/YARN-3069) | Document missing properties in yarn-default.xml |  Major | documentation | Ray Chiang | Ray Chiang |
+| [YARN-3381](https://issues.apache.org/jira/browse/YARN-3381) | Fix typo InvalidStateTransitonException |  Minor | api | Xiaoshuang LU | Brahma Reddy Battula |
+| [HADOOP-12211](https://issues.apache.org/jira/browse/HADOOP-12211) | Collect disks usages on the node |  Major | . | Robert Grandl | Robert Grandl |
+| [HDFS-8722](https://issues.apache.org/jira/browse/HDFS-8722) | Optimize datanode writes for small writes and flushes |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HADOOP-12232](https://issues.apache.org/jira/browse/HADOOP-12232) | Upgrade Tomcat dependency to 6.0.44. |  Major | build | Chris Nauroth | Chris Nauroth |
+| [YARN-3170](https://issues.apache.org/jira/browse/YARN-3170) | YARN architecture document needs updating |  Major | documentation | Allen Wittenauer | Brahma Reddy Battula |
+| [MAPREDUCE-5762](https://issues.apache.org/jira/browse/MAPREDUCE-5762) | Port MAPREDUCE-3223 and MAPREDUCE-4695 (Remove MRv1 config from mapred-default.xml) to branch-2 |  Minor | documentation | Akira Ajisaka | Akira Ajisaka |
+| [YARN-3174](https://issues.apache.org/jira/browse/YARN-3174) | Consolidate the NodeManager and NodeManagerRestart documentation into one |  Major | documentation | Allen Wittenauer | Masatake Iwasaki |
+| [HDFS-7314](https://issues.apache.org/jira/browse/HDFS-7314) | When the DFSClient lease cannot be renewed, abort open-for-write files rather than the entire DFSClient |  Major | . | Ming Ma | Ming Ma |
+| [HADOOP-11893](https://issues.apache.org/jira/browse/HADOOP-11893) | Mark org.apache.hadoop.security.token.Token as @InterfaceAudience.Public |  Major | security | Steve Loughran | Brahma Reddy Battula |
+| [HADOOP-12081](https://issues.apache.org/jira/browse/HADOOP-12081) | Fix UserGroupInformation.java to support 64-bit zLinux |  Major | security | Adam Roberts | Akira Ajisaka |
+| [HADOOP-12214](https://issues.apache.org/jira/browse/HADOOP-12214) | Parse 'HadoopArchive' commandline using cli Options. |  Minor | . | Vinayakumar B | Vinayakumar B |
+| [YARN-2921](https://issues.apache.org/jira/browse/YARN-2921) | Fix MockRM/MockAM#waitForState sleep too long |  Major | test | Karthik Kambatla | Tsuyoshi Ozawa |
+| [HADOOP-12161](https://issues.apache.org/jira/browse/HADOOP-12161) | Add getStoragePolicy API to the FileSystem interface |  Major | fs | Arpit Agarwal | Brahma Reddy Battula |
+| [HADOOP-12189](https://issues.apache.org/jira/browse/HADOOP-12189) | Improve CallQueueManager#swapQueue to make queue elements drop nearly impossible. |  Major | ipc, test | zhihai xu | zhihai xu |
+| [HADOOP-12009](https://issues.apache.org/jira/browse/HADOOP-12009) | Clarify FileSystem.listStatus() sorting order & fix FileSystemContractBaseTest:testListStatus |  Minor | documentation, fs, test | Jakob Homan | J.Andreina |
+| [HADOOP-12259](https://issues.apache.org/jira/browse/HADOOP-12259) | Utility to Dynamic port allocation |  Major | test, util | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-8735](https://issues.apache.org/jira/browse/HDFS-8735) | Inotify : All events classes should implement toString() API. |  Major | hdfs-client | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HDFS-7858](https://issues.apache.org/jira/browse/HDFS-7858) | Improve HA Namenode Failover detection on the client |  Major | hdfs-client | Arun Suresh | Arun Suresh |
+| [HDFS-8180](https://issues.apache.org/jira/browse/HDFS-8180) | AbstractFileSystem Implementation for WebHdfs |  Major | webhdfs | Santhosh G Nayak | Santhosh G Nayak |
+| [HDFS-8811](https://issues.apache.org/jira/browse/HDFS-8811) | Move BlockStoragePolicy name's constants from HdfsServerConstants.java to HdfsConstants.java |  Major | . | Vinayakumar B | Vinayakumar B |
+| [HDFS-8822](https://issues.apache.org/jira/browse/HDFS-8822) | Add SSD storagepolicy tests in TestBlockStoragePolicy#testDefaultPolicies |  Major | . | Vinayakumar B | Vinayakumar B |
+| [YARN-3950](https://issues.apache.org/jira/browse/YARN-3950) | Add unique YARN\_SHELL\_ID environment variable to DistributedShell |  Major | applications/distributed-shell | Robert Kanter | Robert Kanter |
+| [YARN-2768](https://issues.apache.org/jira/browse/YARN-2768) | Avoid cloning Resource in FSAppAttempt#updateDemand |  Minor | fairscheduler | Hong Zhiguo | Hong Zhiguo |
+| [HDFS-8816](https://issues.apache.org/jira/browse/HDFS-8816) | Improve visualization for the Datanode tab in the NN UI |  Major | . | Haohui Mai | Haohui Mai |
+| [HDFS-8821](https://issues.apache.org/jira/browse/HDFS-8821) | Explain message "Operation category X is not supported in state standby" |  Minor | . | Gautam Gopalakrishnan | Gautam Gopalakrishnan |
+| [HADOOP-12271](https://issues.apache.org/jira/browse/HADOOP-12271) | Hadoop Jar Error Should Be More Explanatory |  Minor | . | Jesse Anderson | Josh Elser |
+| [HADOOP-12183](https://issues.apache.org/jira/browse/HADOOP-12183) | Annotate the HTrace span created by FsShell with the command-line arguments passed by the user |  Minor | tracing | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-3978](https://issues.apache.org/jira/browse/YARN-3978) | Configurably turn off the saving of container info in Generic AHS |  Major | timelineserver, yarn | Eric Payne | Eric Payne |
+| [YARN-3965](https://issues.apache.org/jira/browse/YARN-3965) | Add startup timestamp to nodemanager UI |  Minor | nodemanager | Hong Zhiguo | Hong Zhiguo |
+| [HADOOP-12280](https://issues.apache.org/jira/browse/HADOOP-12280) | Skip unit tests based on maven profile rather than NativeCodeLoader.isNativeCodeLoaded |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8815](https://issues.apache.org/jira/browse/HDFS-8815) | DFS getStoragePolicy implementation using single RPC call |  Major | hdfs-client | Arpit Agarwal | Surendra Singh Lilhore |
+| [YARN-3961](https://issues.apache.org/jira/browse/YARN-3961) | Expose pending, running and reserved containers of a queue in REST api and yarn top |  Major | capacityscheduler, fairscheduler, webapp | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-4019](https://issues.apache.org/jira/browse/YARN-4019) | Add JvmPauseMonitor to ResourceManager and NodeManager |  Major | nodemanager, resourcemanager | Robert Kanter | Robert Kanter |
+| [MAPREDUCE-6443](https://issues.apache.org/jira/browse/MAPREDUCE-6443) | Add JvmPauseMonitor to Job History Server |  Major | jobhistoryserver | Robert Kanter | Robert Kanter |
+| [HDFS-8887](https://issues.apache.org/jira/browse/HDFS-8887) | Expose storage type and storage ID in BlockLocation |  Major | . | Andrew Wang | Andrew Wang |
+| [HADOOP-12318](https://issues.apache.org/jira/browse/HADOOP-12318) | Expose underlying LDAP exceptions in SaslPlainServer |  Minor | security | Mike Yoder | Mike Yoder |
+| [HADOOP-12295](https://issues.apache.org/jira/browse/HADOOP-12295) | Improve NetworkTopology#InnerNode#remove logic |  Major | . | Yi Liu | Yi Liu |
+| [HDFS-7649](https://issues.apache.org/jira/browse/HDFS-7649) | Multihoming docs should emphasize using hostnames in configurations |  Major | documentation | Arpit Agarwal | Brahma Reddy Battula |
+| [YARN-4055](https://issues.apache.org/jira/browse/YARN-4055) | Report node resource utilization in heartbeat |  Major | nodemanager | Inigo Goiri | Inigo Goiri |
+| [HDFS-8713](https://issues.apache.org/jira/browse/HDFS-8713) | Convert DatanodeDescriptor to use SLF4J logging |  Trivial | . | Andrew Wang | Andrew Wang |
+| [HDFS-8883](https://issues.apache.org/jira/browse/HDFS-8883) | NameNode Metrics : Add FSNameSystem lock Queue Length |  Major | namenode | Anu Engineer | Anu Engineer |
+| [HDFS-6407](https://issues.apache.org/jira/browse/HDFS-6407) | Add sorting and pagination in the datanode tab of the NN Web UI |  Critical | namenode | Nathan Roberts | Haohui Mai |
+| [HDFS-8880](https://issues.apache.org/jira/browse/HDFS-8880) | NameNode metrics logging |  Major | namenode | Arpit Agarwal | Arpit Agarwal |
+| [YARN-4057](https://issues.apache.org/jira/browse/YARN-4057) | If ContainersMonitor is not enabled, only print related log info one time |  Minor | nodemanager | Jun Gong | Jun Gong |
+| [HADOOP-12050](https://issues.apache.org/jira/browse/HADOOP-12050) | Enable MaxInactiveInterval for hadoop http auth token |  Major | security | Benoy Antony | Huizhi Lu |
+| [HDFS-8435](https://issues.apache.org/jira/browse/HDFS-8435) | Support CreateFlag in WebHdfs |  Major | webhdfs | Vinoth Sathappan | Jakob Homan |
+| [HDFS-8911](https://issues.apache.org/jira/browse/HDFS-8911) | NameNode Metric : Add Editlog counters as a JMX metric |  Major | namenode | Anu Engineer | Anu Engineer |
+| [HDFS-8917](https://issues.apache.org/jira/browse/HDFS-8917) | Cleanup BlockInfoUnderConstruction from comments and tests |  Minor | namenode | Zhe Zhang | Zhe Zhang |
+| [HDFS-8884](https://issues.apache.org/jira/browse/HDFS-8884) | Fail-fast check in BlockPlacementPolicyDefault#chooseTarget |  Major | . | Yi Liu | Yi Liu |
+| [HDFS-8828](https://issues.apache.org/jira/browse/HDFS-8828) | Utilize Snapshot diff report to build diff copy list in distcp |  Major | distcp, snapshots | Yufei Gu | Yufei Gu |
+| [HDFS-8924](https://issues.apache.org/jira/browse/HDFS-8924) | Add pluggable interface for reading replicas in DFSClient |  Major | hdfs-client | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-8928](https://issues.apache.org/jira/browse/HDFS-8928) | Improvements for BlockUnderConstructionFeature: ReplicaUnderConstruction as a separate class and replicas as an array |  Minor | namenode | Zhe Zhang | Jing Zhao |
+| [HDFS-2390](https://issues.apache.org/jira/browse/HDFS-2390) | dfsadmin -setBalancerBandwidth doesnot validate -ve value |  Minor | balancer & mover | Rajit Saha | Gautam Gopalakrishnan |
+| [HDFS-8865](https://issues.apache.org/jira/browse/HDFS-8865) | Improve quota initialization performance |  Major | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8983](https://issues.apache.org/jira/browse/HDFS-8983) | NameNode support for protected directories |  Major | namenode | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8946](https://issues.apache.org/jira/browse/HDFS-8946) | Improve choosing datanode storage for block placement |  Major | namenode | Yi Liu | Yi Liu |
+| [HDFS-8965](https://issues.apache.org/jira/browse/HDFS-8965) | Harden edit log reading code against out of memory errors |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HADOOP-12368](https://issues.apache.org/jira/browse/HADOOP-12368) | Mark ViewFileSystemBaseTest and ViewFsBaseTest as abstract |  Trivial | . | Andrew Wang | Andrew Wang |
+| [HADOOP-12367](https://issues.apache.org/jira/browse/HADOOP-12367) | Move TestFileUtil's test resources to resources folder |  Minor | . | Andrew Wang | Andrew Wang |
+| [HADOOP-12369](https://issues.apache.org/jira/browse/HADOOP-12369) | Point hadoop-project/pom.xml java.security.krb5.conf within target folder |  Minor | . | Andrew Wang | Andrew Wang |
+| [HDFS-328](https://issues.apache.org/jira/browse/HDFS-328) | Improve fs -setrep error message for invalid replication factors |  Major | namenode | Tsz Wo Nicholas Sze | Daniel Templeton |
+| [HADOOP-5323](https://issues.apache.org/jira/browse/HADOOP-5323) | Trash documentation should describe its directory structure and configurations |  Minor | documentation | Suman Sehgal | Weiwei Yang |
+| [HDFS-9021](https://issues.apache.org/jira/browse/HDFS-9021) | Use a yellow elephant rather than a blue one in diagram |  Minor | . | Andrew Wang | Andrew Wang |
+| [HADOOP-12358](https://issues.apache.org/jira/browse/HADOOP-12358) | Add -safely flag to rm to prompt when deleting many files |  Major | fs | Xiaoyu Yao | Xiaoyu Yao |
+| [YARN-4024](https://issues.apache.org/jira/browse/YARN-4024) | YARN RM should avoid unnecessary resolving IP when NMs doing heartbeat |  Major | resourcemanager | Wangda Tan | Hong Zhiguo |
+| [HADOOP-12384](https://issues.apache.org/jira/browse/HADOOP-12384) | Add "-direct" flag option for fs copy so that user can choose not to create ".\_COPYING\_" file |  Major | fs | Chen He | J.Andreina |
+| [HDFS-9019](https://issues.apache.org/jira/browse/HDFS-9019) | Adding informative message to sticky bit permission denied exception |  Minor | security | Thejas M Nair | Xiaoyu Yao |
+| [HDFS-8384](https://issues.apache.org/jira/browse/HDFS-8384) | Allow NN to startup if there are files having a lease but are not under construction |  Minor | namenode | Tsz Wo Nicholas Sze | Jing Zhao |
+| [HDFS-8929](https://issues.apache.org/jira/browse/HDFS-8929) | Add a metric to expose the timestamp of the last journal |  Major | journal-node | Akira Ajisaka | Surendra Singh Lilhore |
+| [HDFS-7116](https://issues.apache.org/jira/browse/HDFS-7116) | Add a command to get the balancer bandwidth |  Major | balancer & mover | Akira Ajisaka | Rakesh R |
+| [YARN-4086](https://issues.apache.org/jira/browse/YARN-4086) | Allow Aggregated Log readers to handle HAR files |  Major | . | Robert Kanter | Robert Kanter |
+| [HDFS-8974](https://issues.apache.org/jira/browse/HDFS-8974) | Convert docs in xdoc format to markdown |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-4145](https://issues.apache.org/jira/browse/YARN-4145) | Make RMHATestBase abstract so its not run when running all tests under that namespace |  Minor | . | Anubhav Dhoot | Anubhav Dhoot |
+| [HADOOP-12324](https://issues.apache.org/jira/browse/HADOOP-12324) | Better exception reporting in SaslPlainServer |  Minor | security | Mike Yoder | Mike Yoder |
+| [YARN-2005](https://issues.apache.org/jira/browse/YARN-2005) | Blacklisting support for scheduling AMs |  Major | resourcemanager | Jason Lowe | Anubhav Dhoot |
+| [HDFS-8829](https://issues.apache.org/jira/browse/HDFS-8829) | Make SO\_RCVBUF and SO\_SNDBUF size configurable for DataTransferProtocol sockets and allow configuring auto-tuning |  Major | datanode | He Tianyi | He Tianyi |
+| [HDFS-9065](https://issues.apache.org/jira/browse/HDFS-9065) | Include commas on # of files, blocks, total filesystem objects in NN Web UI |  Minor | namenode | Daniel Templeton | Daniel Templeton |
+| [HADOOP-12413](https://issues.apache.org/jira/browse/HADOOP-12413) | AccessControlList should avoid calling getGroupNames in isUserInList with empty groups. |  Major | security | zhihai xu | zhihai xu |
+| [HDFS-8953](https://issues.apache.org/jira/browse/HDFS-8953) | DataNode Metrics logging |  Major | . | Kanaka Kumar Avvaru | Kanaka Kumar Avvaru |
+| [YARN-4158](https://issues.apache.org/jira/browse/YARN-4158) | Remove duplicate close for LogWriter in AppLogAggregatorImpl#uploadLogsForContainers |  Minor | nodemanager | zhihai xu | zhihai xu |
+| [YARN-4149](https://issues.apache.org/jira/browse/YARN-4149) | yarn logs -am should provide an option to fetch all the log files |  Major | client, nodemanager | Varun Vasudev | Varun Vasudev |
+| [HDFS-9082](https://issues.apache.org/jira/browse/HDFS-9082) | Change the log level in WebHdfsFileSystem.initialize() from INFO to DEBUG |  Minor | webhdfs | Santhosh G Nayak | Santhosh G Nayak |
+| [YARN-4135](https://issues.apache.org/jira/browse/YARN-4135) | Improve the assertion message in MockRM while failing after waiting for the state. |  Trivial | . | nijel | nijel |
+| [MAPREDUCE-6478](https://issues.apache.org/jira/browse/MAPREDUCE-6478) | Add an option to skip cleanupJob stage or ignore cleanup failure during commitJob(). |  Major | . | Junping Du | Junping Du |
+| [HADOOP-12404](https://issues.apache.org/jira/browse/HADOOP-12404) | Disable caching for JarURLConnection to avoid sharing JarFile with other users when loading resource from URL in Configuration class. |  Minor | conf | zhihai xu | zhihai xu |
+| [HADOOP-12428](https://issues.apache.org/jira/browse/HADOOP-12428) | Fix inconsistency between log-level guards and statements |  Minor | . | Jackie Chang | Jagadesh Kiran N |
+| [YARN-4095](https://issues.apache.org/jira/browse/YARN-4095) | Avoid sharing AllocatorPerContext object in LocalDirAllocator between ShuffleHandler and LocalDirsHandlerService. |  Major | nodemanager | zhihai xu | zhihai xu |
+| [HDFS-5795](https://issues.apache.org/jira/browse/HDFS-5795) | RemoteBlockReader2#checkSuccess() shoud print error status |  Trivial | . | Brandon Li | Xiao Chen |
+| [HDFS-9112](https://issues.apache.org/jira/browse/HDFS-9112) | Improve error message for Haadmin when multiple name service IDs are configured |  Major | tools | Anu Engineer | Anu Engineer |
+| [HDFS-9132](https://issues.apache.org/jira/browse/HDFS-9132) | Pass genstamp to ReplicaAccessorBuilder |  Major | hdfs-client | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-8873](https://issues.apache.org/jira/browse/HDFS-8873) | Allow the directoryScanner to be rate-limited |  Major | datanode | Nathan Roberts | Daniel Templeton |
+| [HADOOP-12442](https://issues.apache.org/jira/browse/HADOOP-12442) | Display help if the  command option to "hdfs dfs " is not valid |  Minor | . | nijel | nijel |
+| [HADOOP-11984](https://issues.apache.org/jira/browse/HADOOP-11984) | Enable parallel JUnit tests in pre-commit. |  Major | build, scripts, test | Chris Nauroth | Chris Nauroth |
+| [MAPREDUCE-6471](https://issues.apache.org/jira/browse/MAPREDUCE-6471) | Document distcp incremental copy |  Major | distcp | Arpit Agarwal | Neelesh Srinivas Salian |
+| [HDFS-9148](https://issues.apache.org/jira/browse/HDFS-9148) | Incorrect assert message in TestWriteToReplica#testWriteToTemporary |  Trivial | test | Tony Wu | Tony Wu |
+| [HDFS-8859](https://issues.apache.org/jira/browse/HDFS-8859) | Improve DataNode ReplicaMap memory footprint to save about 45% |  Major | datanode | Yi Liu | Yi Liu |
+| [HDFS-8696](https://issues.apache.org/jira/browse/HDFS-8696) | Make the lower and higher watermark in the DN Netty server configurable |  Major | webhdfs | Xiaobing Zhou | Xiaobing Zhou |
+| [YARN-3727](https://issues.apache.org/jira/browse/YARN-3727) | For better error recovery, check if the directory exists before using it for localization. |  Major | nodemanager | zhihai xu | zhihai xu |
+| [HDFS-9175](https://issues.apache.org/jira/browse/HDFS-9175) | Change scope of 'AccessTokenProvider.getAccessToken()' and 'CredentialBasedAccessTokenProvider.getCredential()' abstract methods to public |  Major | webhdfs | Santhosh G Nayak | Santhosh G Nayak |
+| [HADOOP-12458](https://issues.apache.org/jira/browse/HADOOP-12458) | Retries is typoed to spell Retires in parts of hadoop-yarn and hadoop-common |  Minor | documentation | Neelesh Srinivas Salian | Neelesh Srinivas Salian |
+| [HDFS-9151](https://issues.apache.org/jira/browse/HDFS-9151) | Mover should print the exit status/reason on console like balancer tool. |  Minor | balancer & mover | Archana T | Surendra Singh Lilhore |
+| [HADOOP-12350](https://issues.apache.org/jira/browse/HADOOP-12350) | WASB Logging: Improve WASB Logging around deletes, reads and writes |  Major | tools | Dushyanth | Dushyanth |
+| [HADOOP-12284](https://issues.apache.org/jira/browse/HADOOP-12284) | UserGroupInformation doAs can throw misleading exception |  Trivial | security | Aaron Dossett | Aaron Dossett |
+| [YARN-4228](https://issues.apache.org/jira/browse/YARN-4228) | FileSystemRMStateStore use IOUtils#close instead of fs#close |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-3943](https://issues.apache.org/jira/browse/YARN-3943) | Use separate threshold configurations for disk-full detection and disk-not-full detection. |  Critical | nodemanager | zhihai xu | zhihai xu |
+| [MAPREDUCE-6479](https://issues.apache.org/jira/browse/MAPREDUCE-6479) | Add missing mapred job command options in mapreduce document |  Major | documentation | nijel | nijel |
+| [HADOOP-11104](https://issues.apache.org/jira/browse/HADOOP-11104) | org.apache.hadoop.metrics2.lib.MetricsRegistry needs numerical parameter checking |  Minor | . | Ray Chiang | Ray Chiang |
+| [HDFS-9181](https://issues.apache.org/jira/browse/HDFS-9181) | Better handling of exceptions thrown during upgrade shutdown |  Minor | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9110](https://issues.apache.org/jira/browse/HDFS-9110) | Use Files.walkFileTree in NNUpgradeUtil#doPreUpgrade for better efficiency |  Minor | . | Charlie Helin | Charlie Helin |
+| [HDFS-9221](https://issues.apache.org/jira/browse/HDFS-9221) | HdfsServerConstants#ReplicaState#getState should avoid calling values() since it creates a temporary array |  Major | performance | Staffan Friberg | Staffan Friberg |
+| [HDFS-8988](https://issues.apache.org/jira/browse/HDFS-8988) | Use LightWeightHashSet instead of LightWeightLinkedSet in BlockManager#excessReplicateMap |  Major | . | Yi Liu | Yi Liu |
+| [HDFS-9139](https://issues.apache.org/jira/browse/HDFS-9139) | Enable parallel JUnit tests for HDFS Pre-commit |  Major | test | Vinayakumar B | Vinayakumar B |
+| [HDFS-9145](https://issues.apache.org/jira/browse/HDFS-9145) | Tracking methods that hold FSNamesytemLock for too long |  Major | namenode | Jing Zhao | Mingliang Liu |
+| [HADOOP-10775](https://issues.apache.org/jira/browse/HADOOP-10775) | Shell operations to fail with meaningful errors on windows if winutils.exe not found |  Minor | util | Steve Loughran | Steve Loughran |
+| [YARN-4253](https://issues.apache.org/jira/browse/YARN-4253) | Standardize on using PrivilegedOperationExecutor for all invocations of container-executor in LinuxContainerExecutor |  Major | . | Sidharta Seethana | Sidharta Seethana |
+| [YARN-4252](https://issues.apache.org/jira/browse/YARN-4252) | Log container-executor invocation details when exit code is non-zero |  Minor | nodemanager | Sidharta Seethana | Sidharta Seethana |
+| [HDFS-9238](https://issues.apache.org/jira/browse/HDFS-9238) | Update TestFileCreation#testLeaseExpireHardLimit() to avoid using DataNodeTestUtils#getFile() |  Trivial | test | Tony Wu | Tony Wu |
+| [HDFS-9188](https://issues.apache.org/jira/browse/HDFS-9188) | Make block corruption related tests FsDataset-agnostic. |  Major | test | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HDFS-9205](https://issues.apache.org/jira/browse/HDFS-9205) | Do not schedule corrupt blocks for replication |  Minor | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HADOOP-12481](https://issues.apache.org/jira/browse/HADOOP-12481) | JWTRedirectAuthenticationHandler doesn't Retain Original Query String |  Major | security | Larry McCay | Larry McCay |
+| [HDFS-9257](https://issues.apache.org/jira/browse/HDFS-9257) | improve error message for "Absolute path required" in INode.java to contain the rejected path |  Trivial | namenode | Marcell Szabo | Marcell Szabo |
+| [HDFS-9253](https://issues.apache.org/jira/browse/HDFS-9253) | Refactor tests of libhdfs into a directory |  Major | . | Haohui Mai | Haohui Mai |
+| [HADOOP-12450](https://issues.apache.org/jira/browse/HADOOP-12450) | UserGroupInformation should not log at WARN level if no groups are found |  Minor | security | Elliott Clark | Elliott Clark |
+| [HADOOP-12460](https://issues.apache.org/jira/browse/HADOOP-12460) | Add overwrite option for 'get' shell command |  Major | . | Keegan Witt | Jagadesh Kiran N |
+| [HDFS-9250](https://issues.apache.org/jira/browse/HDFS-9250) | Add Precondition check to LocatedBlock#addCachedLoc |  Major | namenode | Xiao Chen | Xiao Chen |
+| [HDFS-9251](https://issues.apache.org/jira/browse/HDFS-9251) | Refactor TestWriteToReplica and TestFsDatasetImpl to avoid explicitly creating Files in tests code. |  Major | test | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [MAPREDUCE-6489](https://issues.apache.org/jira/browse/MAPREDUCE-6489) | Fail fast rogue tasks that write too much to local disk |  Major | task | Maysam Yabandeh | Maysam Yabandeh |
+| [HDFS-8647](https://issues.apache.org/jira/browse/HDFS-8647) | Abstract BlockManager's rack policy into BlockPlacementPolicy |  Major | . | Ming Ma | Brahma Reddy Battula |
+| [HDFS-7087](https://issues.apache.org/jira/browse/HDFS-7087) | Ability to list /.reserved |  Major | . | Andrew Wang | Xiao Chen |
+| [HDFS-9280](https://issues.apache.org/jira/browse/HDFS-9280) | Document NFS gateway export point parameter |  Trivial | documentation | Zhe Zhang | Xiao Chen |
+| [HADOOP-12334](https://issues.apache.org/jira/browse/HADOOP-12334) | Change Mode Of Copy Operation of HBase WAL Archiving to bypass Azure Storage Throttling after retries |  Major | tools | Gaurav Kanade | Gaurav Kanade |
+| [HADOOP-7266](https://issues.apache.org/jira/browse/HADOOP-7266) | Deprecate metrics v1 |  Blocker | metrics | Luke Lu | Akira Ajisaka |
+| [YARN-2913](https://issues.apache.org/jira/browse/YARN-2913) | Fair scheduler should have ability to set MaxResourceDefault for each queue |  Major | . | Siqi Li | Siqi Li |
+| [HDFS-9264](https://issues.apache.org/jira/browse/HDFS-9264) | Minor cleanup of operations on FsVolumeList#volumes |  Minor | . | Walter Su | Walter Su |
+| [HDFS-8808](https://issues.apache.org/jira/browse/HDFS-8808) | dfs.image.transfer.bandwidthPerSec should not apply to -bootstrapStandby |  Major | . | Gautam Gopalakrishnan | Zhe Zhang |
+| [HDFS-9297](https://issues.apache.org/jira/browse/HDFS-9297) | Update TestBlockMissingException to use corruptBlockOnDataNodesByDeletingBlockFile() |  Trivial | test | Tony Wu | Tony Wu |
+| [HDFS-4015](https://issues.apache.org/jira/browse/HDFS-4015) | Safemode should count and report orphaned blocks |  Major | namenode | Todd Lipcon | Anu Engineer |
+| [YARN-3528](https://issues.apache.org/jira/browse/YARN-3528) | Tests with 12345 as hard-coded port break jenkins |  Blocker | . | Steve Loughran | Brahma Reddy Battula |
+| [YARN-4285](https://issues.apache.org/jira/browse/YARN-4285) | Display resource usage as percentage of queue and cluster in the RM UI |  Major | resourcemanager | Varun Vasudev | Varun Vasudev |
+| [HDFS-7284](https://issues.apache.org/jira/browse/HDFS-7284) | Add more debug info to BlockInfoUnderConstruction#setGenerationStampAndVerifyReplicas |  Major | namenode | Hu Liu, | Wei-Chiu Chuang |
+| [HADOOP-12472](https://issues.apache.org/jira/browse/HADOOP-12472) | Make GenericTestUtils.assertExceptionContains robust |  Minor | test | Steve Loughran | Steve Loughran |
+| [HDFS-9291](https://issues.apache.org/jira/browse/HDFS-9291) | Fix TestInterDatanodeProtocol to be FsDataset-agnostic. |  Minor | test | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HDFS-8945](https://issues.apache.org/jira/browse/HDFS-8945) | Update the description about replica placement in HDFS Architecture documentation |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-9292](https://issues.apache.org/jira/browse/HDFS-9292) | Make TestFileConcorruption independent to underlying FsDataset Implementation. |  Minor | . | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HDFS-9259](https://issues.apache.org/jira/browse/HDFS-9259) | Make SO\_SNDBUF size configurable at DFSClient side for hdfs write scenario |  Major | . | Ming Ma | Mingliang Liu |
+| [HDFS-9299](https://issues.apache.org/jira/browse/HDFS-9299) | Give ReplicationMonitor a readable thread name |  Trivial | namenode | Staffan Friberg | Staffan Friberg |
+| [HDFS-9307](https://issues.apache.org/jira/browse/HDFS-9307) | fuseConnect should be private to fuse\_connect.c |  Trivial | fuse-dfs | Colin P. McCabe | Mingliang Liu |
+| [HADOOP-12520](https://issues.apache.org/jira/browse/HADOOP-12520) | Use XInclude in hadoop-azure test configuration to isolate Azure Storage account keys for service integration tests. |  Major | fs/azure, test | Chris Nauroth | Chris Nauroth |
+| [HDFS-9311](https://issues.apache.org/jira/browse/HDFS-9311) | Support optional offload of NameNode HA service health checks to a separate RPC server. |  Major | ha, namenode | Chris Nauroth | Chris Nauroth |
+| [HDFS-9255](https://issues.apache.org/jira/browse/HDFS-9255) | Consolidate block recovery related implementation into a single class |  Minor | datanode | Walter Su | Walter Su |
+| [YARN-2573](https://issues.apache.org/jira/browse/YARN-2573) | Integrate ReservationSystem with the RM failover mechanism |  Major | capacityscheduler, fairscheduler, resourcemanager | Subru Krishnan | Subru Krishnan |
+| [HDFS-6200](https://issues.apache.org/jira/browse/HDFS-6200) | Create a separate jar for hdfs-client |  Major | build | Haohui Mai | Haohui Mai |
+| [HDFS-8545](https://issues.apache.org/jira/browse/HDFS-8545) | Refactor FS#getUsed() to use ContentSummary and add an API to fetch the total file length from a specific path |  Minor | . | J.Andreina | J.Andreina |
+| [HDFS-9229](https://issues.apache.org/jira/browse/HDFS-9229) | Expose size of NameNode directory as a metric |  Minor | namenode | Zhe Zhang | Surendra Singh Lilhore |
+| [YARN-4310](https://issues.apache.org/jira/browse/YARN-4310) | FairScheduler: Log skipping reservation messages at DEBUG level |  Minor | fairscheduler | Arun Suresh | Arun Suresh |
+| [HDFS-9312](https://issues.apache.org/jira/browse/HDFS-9312) | Fix TestReplication to be FsDataset-agnostic. |  Minor | . | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HDFS-9308](https://issues.apache.org/jira/browse/HDFS-9308) | Add truncateMeta() and deleteMeta() to MiniDFSCluster |  Minor | test | Tony Wu | Tony Wu |
+| [HDFS-9331](https://issues.apache.org/jira/browse/HDFS-9331) | Modify TestNameNodeMXBean#testNameNodeMXBeanInfo() to account for filesystem entirely allocated for DFS use |  Trivial | test | Tony Wu | Tony Wu |
+| [HDFS-9363](https://issues.apache.org/jira/browse/HDFS-9363) | Add fetchReplica() to FsDatasetTestUtils to return FsDataset-agnostic Replica. |  Minor | test | Tony Wu | Tony Wu |
+| [HDFS-9282](https://issues.apache.org/jira/browse/HDFS-9282) | Make data directory count and storage raw capacity related tests FsDataset-agnostic |  Minor | test | Tony Wu | Tony Wu |
+| [HADOOP-12344](https://issues.apache.org/jira/browse/HADOOP-12344) | Improve validateSocketPathSecurity0 error message |  Trivial | net | Casey Brotherton | Casey Brotherton |
+| [HDFS-9398](https://issues.apache.org/jira/browse/HDFS-9398) | Make ByteArraryManager log message in one-line format |  Minor | hdfs-client | Mingliang Liu | Mingliang Liu |
+| [HDFS-9234](https://issues.apache.org/jira/browse/HDFS-9234) | WebHdfs : getContentSummary() should give quota for storage types |  Major | webhdfs | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HDFS-9369](https://issues.apache.org/jira/browse/HDFS-9369) | Use ctest to run tests for hadoop-hdfs-native-client |  Minor | . | Haohui Mai | Haohui Mai |
+| [HADOOP-12562](https://issues.apache.org/jira/browse/HADOOP-12562) | Make hadoop dockerfile usable by Yetus |  Major | build | Allen Wittenauer | Allen Wittenauer |
+| [YARN-4287](https://issues.apache.org/jira/browse/YARN-4287) | Capacity Scheduler: Rack Locality improvement |  Major | capacityscheduler | Nathan Roberts | Nathan Roberts |
+| [MAPREDUCE-5485](https://issues.apache.org/jira/browse/MAPREDUCE-5485) | Allow repeating job commit by extending OutputCommitter API |  Critical | . | Nemon Lou | Junping Du |
+| [MAPREDUCE-6499](https://issues.apache.org/jira/browse/MAPREDUCE-6499) | Add elapsed time for retired job in JobHistoryServer WebUI |  Major | webapps | Yiqun Lin | Yiqun Lin |
+| [HDFS-9252](https://issues.apache.org/jira/browse/HDFS-9252) | Change TestFileTruncate to use FsDatasetTestUtils to get block file size and genstamp. |  Major | . | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HADOOP-12568](https://issues.apache.org/jira/browse/HADOOP-12568) | Update core-default.xml to describe posixGroups support |  Minor | documentation | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4279](https://issues.apache.org/jira/browse/YARN-4279) | Mark ApplicationId and ApplicationAttemptId static methods as @Public, @Unstable |  Minor | client | Steve Loughran | Steve Loughran |
+| [HADOOP-12575](https://issues.apache.org/jira/browse/HADOOP-12575) | Add build instruction for docker toolbox instead of boot2docker |  Trivial | documentation | Kai Sasaki | Kai Sasaki |
+| [HDFS-8056](https://issues.apache.org/jira/browse/HDFS-8056) | Decommissioned dead nodes should continue to be counted as dead after NN restart |  Major | . | Ming Ma | Ming Ma |
+| [HADOOP-11901](https://issues.apache.org/jira/browse/HADOOP-11901) | BytesWritable fails to support 2G chunks due to integer overflow |  Major | . | Reynold Xin | Reynold Xin |
+| [HDFS-9439](https://issues.apache.org/jira/browse/HDFS-9439) | Include status of closeAck into exception message in DataNode#run |  Trivial | . | Xiao Chen | Xiao Chen |
+| [HDFS-9402](https://issues.apache.org/jira/browse/HDFS-9402) | Switch DataNode.LOG to use slf4j |  Minor | . | Walter Su | Walter Su |
+| [HDFS-3302](https://issues.apache.org/jira/browse/HDFS-3302) | Review and improve HDFS trash documentation |  Major | documentation | Harsh J |  |
+| [HADOOP-10035](https://issues.apache.org/jira/browse/HADOOP-10035) | Cleanup TestFilterFileSystem |  Major | . | Suresh Srinivas | Suresh Srinivas |
+| [HADOOP-10555](https://issues.apache.org/jira/browse/HADOOP-10555) | Add offset support to MurmurHash |  Trivial | . | Sergey Shelukhin | Sergey Shelukhin |
+| [HADOOP-10068](https://issues.apache.org/jira/browse/HADOOP-10068) | Improve log4j regex in testFindContainingJar |  Trivial | . | Robert Rati | Robert Rati |
+| [HDFS-9024](https://issues.apache.org/jira/browse/HDFS-9024) | Deprecate the TotalFiles metric |  Major | . | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-7988](https://issues.apache.org/jira/browse/HDFS-7988) | Replace usage of ExactSizeInputStream with LimitInputStream. |  Minor | . | Chris Nauroth | Walter Su |
+| [HDFS-9314](https://issues.apache.org/jira/browse/HDFS-9314) | Improve BlockPlacementPolicyDefault's picking of excess replicas |  Major | . | Ming Ma | Xiao Chen |
+| [MAPREDUCE-5870](https://issues.apache.org/jira/browse/MAPREDUCE-5870) | Support for passing Job priority through Application Submission Context in Mapreduce Side |  Major | client | Sunil G | Sunil G |
+| [HDFS-9434](https://issues.apache.org/jira/browse/HDFS-9434) | Recommission a datanode with 500k blocks may pause NN for 30 seconds |  Major | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [YARN-4132](https://issues.apache.org/jira/browse/YARN-4132) | Separate configs for nodemanager to resourcemanager connection timeout and retries |  Major | nodemanager | Chang Li | Chang Li |
+| [HDFS-8512](https://issues.apache.org/jira/browse/HDFS-8512) | WebHDFS : GETFILESTATUS should return LocatedBlock with storage type info |  Major | webhdfs | Sumana Sathish | Xiaoyu Yao |
+| [HADOOP-12600](https://issues.apache.org/jira/browse/HADOOP-12600) | FileContext and AbstractFileSystem should be annotated as a Stable interface. |  Blocker | fs | Chris Nauroth | Chris Nauroth |
+| [HDFS-9269](https://issues.apache.org/jira/browse/HDFS-9269) | Update the documentation and wrapper for fuse-dfs |  Minor | fuse-dfs | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9485](https://issues.apache.org/jira/browse/HDFS-9485) | Make BlockManager#removeFromExcessReplicateMap accept BlockInfo instead of Block |  Minor | namenode | Mingliang Liu | Mingliang Liu |
+| [HDFS-9490](https://issues.apache.org/jira/browse/HDFS-9490) | MiniDFSCluster should change block generation stamp via FsDatasetTestUtils |  Minor | test | Tony Wu | Tony Wu |
+| [HDFS-8831](https://issues.apache.org/jira/browse/HDFS-8831) | Trash Support for deletion in HDFS encryption zone |  Major | encryption | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-9474](https://issues.apache.org/jira/browse/HDFS-9474) | TestPipelinesFailover should not fail when printing debug message |  Major | . | Yongjun Zhang | John Zhuge |
+| [YARN-3456](https://issues.apache.org/jira/browse/YARN-3456) | Improve handling of incomplete TimelineEntities |  Minor | timelineserver | Steve Loughran | Varun Saxena |
+| [HDFS-9527](https://issues.apache.org/jira/browse/HDFS-9527) | The return type of FSNamesystem.getBlockCollection should be changed to INodeFile |  Minor | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-9472](https://issues.apache.org/jira/browse/HDFS-9472) | concat() API does not give proper exception messages on ./reserved relative path |  Major | namenode | Rakesh R | Rakesh R |
+| [HDFS-9532](https://issues.apache.org/jira/browse/HDFS-9532) | Detailed exception info is lost in reportTo method of ErrorReportAction and ReportBadBlockAction |  Trivial | datanode | Yongjun Zhang | Yongjun Zhang |
+| [HDFS-9528](https://issues.apache.org/jira/browse/HDFS-9528) | Cleanup namenode audit/log/exception messages |  Minor | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8860](https://issues.apache.org/jira/browse/HDFS-8860) | Remove unused Replica copyOnWrite code |  Major | . | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [MAPREDUCE-6436](https://issues.apache.org/jira/browse/MAPREDUCE-6436) | JobHistory cache issue |  Blocker | . | Ryu Kobayashi | Kai Sasaki |
+| [HADOOP-12639](https://issues.apache.org/jira/browse/HADOOP-12639) | Imrpove JavaDoc for getTrimmedStrings |  Trivial | util | BELUGA BEHR | BELUGA BEHR |
+| [HDFS-9557](https://issues.apache.org/jira/browse/HDFS-9557) | Reduce object allocation in PB conversion |  Major | hdfs-client | Daryn Sharp | Daryn Sharp |
+| [YARN-4207](https://issues.apache.org/jira/browse/YARN-4207) | Add a non-judgemental YARN app completion status |  Major | . | Sergey Shelukhin | Rich Haase |
+| [HDFS-9198](https://issues.apache.org/jira/browse/HDFS-9198) | Coalesce IBR processing in the NN |  Major | namenode | Daryn Sharp | Daryn Sharp |
+| [HDFS-9552](https://issues.apache.org/jira/browse/HDFS-9552) | Document types of permission checks performed for HDFS operations. |  Major | documentation | Chris Nauroth | Chris Nauroth |
+| [HADOOP-12570](https://issues.apache.org/jira/browse/HADOOP-12570) | HDFS Secure Mode Documentation updates |  Major | documentation | Arpit Agarwal | Arpit Agarwal |
+| [YARN-4480](https://issues.apache.org/jira/browse/YARN-4480) | Clean up some inappropriate imports |  Major | . | Kai Zheng | Kai Zheng |
+| [YARN-4290](https://issues.apache.org/jira/browse/YARN-4290) | Add -showDetails option to YARN Nodes CLI to print all nodes reports information |  Major | client | Wangda Tan | Sunil G |
+| [YARN-4400](https://issues.apache.org/jira/browse/YARN-4400) | AsyncDispatcher.waitForDrained should be final |  Trivial | yarn | Daniel Templeton | Daniel Templeton |
+| [MAPREDUCE-6584](https://issues.apache.org/jira/browse/MAPREDUCE-6584) | Remove trailing whitespaces from mapred-default.xml |  Major | documentation | Akira Ajisaka | Akira Ajisaka |
+| [HADOOP-12686](https://issues.apache.org/jira/browse/HADOOP-12686) | Update FileSystemShell documentation to mention the meaning of each columns of fs -du |  Minor | documentation, fs | Daisuke Kobayashi | Daisuke Kobayashi |
+| [YARN-4544](https://issues.apache.org/jira/browse/YARN-4544) | All the log messages about rolling monitoring interval are shown with WARN level |  Minor | log-aggregation, nodemanager | Takashi Ohnishi | Takashi Ohnishi |
+| [YARN-4438](https://issues.apache.org/jira/browse/YARN-4438) | Implement RM leader election with curator |  Major | . | Jian He | Jian He |
+| [HDFS-9630](https://issues.apache.org/jira/browse/HDFS-9630) | DistCp minor refactoring and clean up |  Minor | distcp | Kai Zheng | Kai Zheng |
+| [YARN-4582](https://issues.apache.org/jira/browse/YARN-4582) | Label-related invalid resource request exception should be able to properly handled by application |  Major | scheduler | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-9569](https://issues.apache.org/jira/browse/HDFS-9569) | Log the name of the fsimage being loaded for better supportability |  Trivial | namenode | Yongjun Zhang | Yongjun Zhang |
+| [MAPREDUCE-6473](https://issues.apache.org/jira/browse/MAPREDUCE-6473) | Job submission can take a long time during Cluster initialization |  Major | performance | Kuhu Shukla | Kuhu Shukla |
+| [HDFS-9415](https://issues.apache.org/jira/browse/HDFS-9415) | Document dfs.cluster.administrators and dfs.permissions.superusergroup |  Major | documentation | Arpit Agarwal | Xiaobing Zhou |
+| [HDFS-6054](https://issues.apache.org/jira/browse/HDFS-6054) | MiniQJMHACluster should not use static port to avoid binding failure in unit test |  Major | test | Brandon Li | Yongjun Zhang |
+| [YARN-4492](https://issues.apache.org/jira/browse/YARN-4492) | Add documentation for preemption supported in Capacity scheduler |  Minor | capacity scheduler | Naganarasimha G R | Naganarasimha G R |
+| [YARN-4371](https://issues.apache.org/jira/browse/YARN-4371) | "yarn application -kill" should take multiple application ids |  Major | . | Tsuyoshi Ozawa | Sunil G |
+| [HDFS-9653](https://issues.apache.org/jira/browse/HDFS-9653) | Expose the number of blocks pending deletion through dfsadmin report command |  Major | hdfs-client, tools | Weiwei Yang | Weiwei Yang |
+| [HADOOP-12731](https://issues.apache.org/jira/browse/HADOOP-12731) | Remove useless boxing/unboxing code |  Minor | performance | Kousuke Saruta | Kousuke Saruta |
+| [HDFS-9654](https://issues.apache.org/jira/browse/HDFS-9654) | Code refactoring for HDFS-8578 |  Minor | datanode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-9706](https://issues.apache.org/jira/browse/HDFS-9706) | Log more details in debug logs in BlockReceiver's constructor |  Minor | . | Xiao Chen | Xiao Chen |
+| [HDFS-9638](https://issues.apache.org/jira/browse/HDFS-9638) | Improve DistCp Help and documentation |  Minor | distcp | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9566](https://issues.apache.org/jira/browse/HDFS-9566) | Remove expensive 'BlocksMap#getStorages(Block b, final DatanodeStorage.State state)' method |  Major | namenode | Daryn Sharp | Daryn Sharp |
+| [HDFS-9721](https://issues.apache.org/jira/browse/HDFS-9721) | Allow Delimited PB OIV tool to run upon fsimage that contains INodeReference |  Major | . | Xiao Chen | Xiao Chen |
+| [HDFS-9669](https://issues.apache.org/jira/browse/HDFS-9669) | TcpPeerServer should respect ipc.server.listen.queue.size |  Major | . | Elliott Clark | Elliott Clark |
+| [HDFS-9715](https://issues.apache.org/jira/browse/HDFS-9715) | Check storage ID uniqueness on datanode startup |  Major | datanode | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [YARN-4662](https://issues.apache.org/jira/browse/YARN-4662) | Document some newly added metrics |  Major | . | Jian He | Jian He |
+| [HDFS-9629](https://issues.apache.org/jira/browse/HDFS-9629) | Update the footer of Web UI to show year 2016 |  Major | . | Xiao Chen | Xiao Chen |
+| [MAPREDUCE-6566](https://issues.apache.org/jira/browse/MAPREDUCE-6566) | Add retry support to mapreduce CLI tool |  Major | . | Varun Vasudev | Varun Vasudev |
+| [HDFS-9726](https://issues.apache.org/jira/browse/HDFS-9726) | Refactor IBR code to a new class |  Minor | datanode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HADOOP-12772](https://issues.apache.org/jira/browse/HADOOP-12772) | NetworkTopologyWithNodeGroup.getNodeGroup() can loop infinitely for invalid 'loc' values |  Minor | . | Kuhu Shukla | Kuhu Shukla |
+| [HADOOP-12758](https://issues.apache.org/jira/browse/HADOOP-12758) | Extend CSRF Filter with UserAgent Checks |  Major | security | Larry McCay | Larry McCay |
+| [HDFS-9686](https://issues.apache.org/jira/browse/HDFS-9686) | Remove useless boxing/unboxing code |  Minor | performance | Kousuke Saruta | Kousuke Saruta |
+| [MAPREDUCE-6626](https://issues.apache.org/jira/browse/MAPREDUCE-6626) | Reuse ObjectMapper instance in MapReduce |  Minor | performance | Yiqun Lin | Yiqun Lin |
+| [HADOOP-12788](https://issues.apache.org/jira/browse/HADOOP-12788) | OpensslAesCtrCryptoCodec should log which random number generator is used. |  Minor | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12764](https://issues.apache.org/jira/browse/HADOOP-12764) | Increase default value of KMS maxHttpHeaderSize and make it configurable |  Minor | . | Zhe Zhang | Zhe Zhang |
+| [HADOOP-12776](https://issues.apache.org/jira/browse/HADOOP-12776) | Remove getaclstatus call for non-acl commands in getfacl. |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-9768](https://issues.apache.org/jira/browse/HDFS-9768) | Reuse objectMapper instance in HDFS to improve the performance |  Major | performance | Yiqun Lin | Yiqun Lin |
+| [HDFS-9644](https://issues.apache.org/jira/browse/HDFS-9644) | Update encryption documentation to reflect nested EZs |  Major | documentation, encryption | Zhe Zhang | Zhe Zhang |
+| [HDFS-9700](https://issues.apache.org/jira/browse/HDFS-9700) | DFSClient and DFSOutputStream should set TCP\_NODELAY on sockets for DataTransferProtocol |  Major | hdfs-client | Gary Helmling | Gary Helmling |
+| [HDFS-9797](https://issues.apache.org/jira/browse/HDFS-9797) | Log Standby exceptions thrown by RequestHedgingProxyProvider at DEBUG Level |  Minor | hdfs-client | Inigo Goiri | Inigo Goiri |
+| [YARN-4682](https://issues.apache.org/jira/browse/YARN-4682) | AMRM client to log when AMRM token updated |  Major | client | Steve Loughran | Prabhu Joseph |
+| [HADOOP-12805](https://issues.apache.org/jira/browse/HADOOP-12805) | Annotate CanUnbuffer with @InterfaceAudience.Public |  Major | . | Ted Yu | Ted Yu |
+| [YARN-4690](https://issues.apache.org/jira/browse/YARN-4690) | Skip object allocation in FSAppAttempt#getResourceUsage when possible |  Major | . | Ming Ma | Ming Ma |
+| [HADOOP-10865](https://issues.apache.org/jira/browse/HADOOP-10865) | Add a Crc32 chunked verification benchmark for both directly and non-directly buffer cases |  Minor | util | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-4946](https://issues.apache.org/jira/browse/HDFS-4946) | Allow preferLocalNode in BlockPlacementPolicyDefault to be configurable |  Major | namenode | James Kinley | Nathan Roberts |
+| [HADOOP-11031](https://issues.apache.org/jira/browse/HADOOP-11031) | Design Document for Credential Provider API |  Major | site | Larry McCay | Larry McCay |
+| [HADOOP-12828](https://issues.apache.org/jira/browse/HADOOP-12828) | Print user when services are started |  Trivial | . | Brandon Li | Wei-Chiu Chuang |
+| [HADOOP-12794](https://issues.apache.org/jira/browse/HADOOP-12794) | Support additional compression levels for GzipCodec |  Major | io | Ravi Mutyala | Ravi Mutyala |
+| [HDFS-9425](https://issues.apache.org/jira/browse/HDFS-9425) | Expose number of blocks per volume as a metric |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12668](https://issues.apache.org/jira/browse/HADOOP-12668) | Support excluding weak Ciphers in HttpServer2 through ssl-server.conf |  Critical | security | Vijay Singh | Vijay Singh |
+| [HADOOP-12555](https://issues.apache.org/jira/browse/HADOOP-12555) | WASB to read credentials from a credential provider |  Minor | fs/azure | Chris Nauroth | Larry McCay |
+| [HDFS-8578](https://issues.apache.org/jira/browse/HDFS-8578) | On upgrade, Datanode should process all storage/data dirs in parallel |  Critical | datanode | Raju Bairishetti | Vinayakumar B |
+| [HADOOP-12535](https://issues.apache.org/jira/browse/HADOOP-12535) | Run FileSystem contract tests with hadoop-azure. |  Major | fs/azure, test | Chris Nauroth | madhumita chakraborty |
+| [HDFS-9854](https://issues.apache.org/jira/browse/HDFS-9854) | Log cipher suite negotiation more verbosely |  Major | encryption | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9843](https://issues.apache.org/jira/browse/HDFS-9843) | Document distcp options required for copying between encrypted locations |  Major | distcp, documentation, encryption | Xiaoyu Yao | Xiaoyu Yao |
+| [HADOOP-12824](https://issues.apache.org/jira/browse/HADOOP-12824) | Collect network and disk usage on the node running Windows |  Major | . | Inigo Goiri | Inigo Goiri |
+| [YARN-4720](https://issues.apache.org/jira/browse/YARN-4720) | Skip unnecessary NN operations in log aggregation |  Major | . | Ming Ma | Jun Gong |
+| [HDFS-9831](https://issues.apache.org/jira/browse/HDFS-9831) | Document webhdfs retry configuration keys introduced by HDFS-5219/HDFS-5122 |  Major | documentation, webhdfs | Xiaoyu Yao | Xiaobing Zhou |
+| [HDFS-9710](https://issues.apache.org/jira/browse/HDFS-9710) | Change DN to send block receipt IBRs in batches |  Major | datanode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [MAPREDUCE-6622](https://issues.apache.org/jira/browse/MAPREDUCE-6622) | Add capability to set JHS job cache to a task-based limit |  Critical | jobhistoryserver | Ray Chiang | Ray Chiang |
+| [HADOOP-12825](https://issues.apache.org/jira/browse/HADOOP-12825) | Log slow name resolutions |  Major | . | Sidharta Seethana | Sidharta Seethana |
+| [YARN-4671](https://issues.apache.org/jira/browse/YARN-4671) | There is no need to acquire CS lock when completing a container |  Major | . | MENG DING | MENG DING |
+| [HADOOP-12853](https://issues.apache.org/jira/browse/HADOOP-12853) | Change WASB documentation regarding page blob support |  Minor | fs/azure | madhumita chakraborty | madhumita chakraborty |
+| [HDFS-9887](https://issues.apache.org/jira/browse/HDFS-9887) | WebHdfs socket timeouts should be configurable |  Major | fs, webhdfs | Austin Donnelly | Austin Donnelly |
+| [HADOOP-12859](https://issues.apache.org/jira/browse/HADOOP-12859) | Disable hiding field style checks in class setters |  Major | . | Kai Zheng | Kai Zheng |
+| [HDFS-9534](https://issues.apache.org/jira/browse/HDFS-9534) | Add CLI command to clear storage policy from a path. |  Major | tools | Chris Nauroth | Xiaobing Zhou |
+| [HADOOP-12793](https://issues.apache.org/jira/browse/HADOOP-12793) | Write a new group mapping service guide |  Major | documentation | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12470](https://issues.apache.org/jira/browse/HADOOP-12470) | In-page TOC of documentation should be automatically generated by doxia macro |  Major | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-9889](https://issues.apache.org/jira/browse/HDFS-9889) | Update balancer/mover document about HDFS-6133 feature |  Minor | . | Yongjun Zhang | Yongjun Zhang |
+| [MAPREDUCE-6648](https://issues.apache.org/jira/browse/MAPREDUCE-6648) | Add yarn.app.mapreduce.am.log.level to mapred-default.xml |  Trivial | documentation | Harsh J | Harsh J |
+| [HDFS-9906](https://issues.apache.org/jira/browse/HDFS-9906) | Remove spammy log spew when a datanode is restarted |  Major | namenode | Elliott Clark | Brahma Reddy Battula |
+| [HADOOP-12901](https://issues.apache.org/jira/browse/HADOOP-12901) | Add warning log when KMSClientProvider cannot create a connection to the KMS server |  Minor | . | Xiao Chen | Xiao Chen |
+| [HADOOP-12789](https://issues.apache.org/jira/browse/HADOOP-12789) | log classpath of ApplicationClassLoader at INFO level |  Minor | util | Sangjin Lee | Sangjin Lee |
+| [HDFS-9882](https://issues.apache.org/jira/browse/HDFS-9882) | Add heartbeatsTotal in Datanode metrics |  Minor | datanode | Hua Liu | Hua Liu |
+| [HADOOP-12860](https://issues.apache.org/jira/browse/HADOOP-12860) | Expand section "Data Encryption on HTTP" in SecureMode documentation |  Minor | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4465](https://issues.apache.org/jira/browse/YARN-4465) | SchedulerUtils#validateRequest for Label check should happen only when nodelabel enabled |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HADOOP-12904](https://issues.apache.org/jira/browse/HADOOP-12904) | Update Yetus to 0.2.0 |  Blocker | build | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-12798](https://issues.apache.org/jira/browse/HADOOP-12798) | Update changelog and release notes (2016-03-04) |  Major | documentation | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-12905](https://issues.apache.org/jira/browse/HADOOP-12905) | Clean up CHANGES.txt RAT exclusions from pom.xml files. |  Trivial | build | Chris Nauroth | Chris Nauroth |
+| [HDFS-9927](https://issues.apache.org/jira/browse/HDFS-9927) | Document the new OIV ReverseXML processor |  Minor | documentation | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9942](https://issues.apache.org/jira/browse/HDFS-9942) | Add an HTrace span when refreshing the groups for a username |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-9941](https://issues.apache.org/jira/browse/HDFS-9941) | Do not log StandbyException on NN, other minor logging fixes |  Major | namenode | Arpit Agarwal | Arpit Agarwal |
+| [HADOOP-12923](https://issues.apache.org/jira/browse/HADOOP-12923) | Move the test code in ipc.Client to test |  Minor | ipc | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-9405](https://issues.apache.org/jira/browse/HDFS-9405) | Warmup NameNode EDEK caches in background thread |  Major | encryption, namenode | Zhe Zhang | Xiao Chen |
+| [HDFS-9951](https://issues.apache.org/jira/browse/HDFS-9951) | Use string constants for XML tags in OfflineImageReconstructor |  Minor | . | Yiqun Lin | Yiqun Lin |
+| [HADOOP-12947](https://issues.apache.org/jira/browse/HADOOP-12947) | Update documentation Hadoop Groups Mapping to add static group mapping, negative cache |  Minor | documentation, security | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4117](https://issues.apache.org/jira/browse/YARN-4117) | End to end unit test with mini YARN cluster for AMRMProxy Service |  Major | nodemanager, resourcemanager | Kishore Chaliparambil | Giovanni Matteo Fumarola |
+| [HADOOP-10965](https://issues.apache.org/jira/browse/HADOOP-10965) | Print fully qualified path in CommandWithDestination error messages |  Minor | . | André Kelpe | John Zhuge |
+| [MAPREDUCE-6663](https://issues.apache.org/jira/browse/MAPREDUCE-6663) | [NNBench] Refactor nnbench as a Tool implementation. |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12886](https://issues.apache.org/jira/browse/HADOOP-12886) | Exclude weak ciphers in SSLFactory through ssl-server.xml |  Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4884](https://issues.apache.org/jira/browse/YARN-4884) | Fix missing documentation about rmadmin command regarding node labels |  Minor | . | Kai Sasaki | Kai Sasaki |
+| [HADOOP-12916](https://issues.apache.org/jira/browse/HADOOP-12916) | Allow RPC scheduler/callqueue backoff using response times |  Major | ipc | Xiaoyu Yao | Xiaoyu Yao |
+| [HADOOP-12950](https://issues.apache.org/jira/browse/HADOOP-12950) | ShutdownHookManager should have a timeout for each of the Registered shutdown hook |  Major | . | Xiaoyu Yao | Xiaoyu Yao |
+| [HADOOP-11661](https://issues.apache.org/jira/browse/HADOOP-11661) | Deprecate FileUtil#copyMerge |  Major | util | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-11687](https://issues.apache.org/jira/browse/HADOOP-11687) | Ignore x-\* and response headers when copying an Amazon S3 object |  Major | fs/s3 | Denis Jannot | Harsh J |
+| [HADOOP-11212](https://issues.apache.org/jira/browse/HADOOP-11212) | NetUtils.wrapException to handle SocketException explicitly |  Major | util | Steve Loughran | Steve Loughran |
+| [HADOOP-12672](https://issues.apache.org/jira/browse/HADOOP-12672) | RPC timeout should not override IPC ping interval |  Major | ipc | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-10235](https://issues.apache.org/jira/browse/HDFS-10235) | [NN UI] Last contact for Live Nodes should be relative time |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-8813](https://issues.apache.org/jira/browse/HADOOP-8813) | RPC Server and Client classes need InterfaceAudience and InterfaceStability annotations |  Trivial | ipc | Brandon Li | Brandon Li |
+| [YARN-4756](https://issues.apache.org/jira/browse/YARN-4756) | Unnecessary wait in Node Status Updater during reboot |  Major | . | Eric Badger | Eric Badger |
+| [HADOOP-12951](https://issues.apache.org/jira/browse/HADOOP-12951) | Improve documentation on KMS ACLs and delegation tokens |  Major | . | Xiao Chen | Xiao Chen |
+| [HADOOP-12994](https://issues.apache.org/jira/browse/HADOOP-12994) | Specify PositionedReadable, add contract tests, fix problems |  Major | fs | Steve Loughran | Steve Loughran |
+| [YARN-4630](https://issues.apache.org/jira/browse/YARN-4630) | Remove useless boxing/unboxing code |  Minor | yarn | Kousuke Saruta | Kousuke Saruta |
+| [HDFS-10279](https://issues.apache.org/jira/browse/HDFS-10279) | Improve validation of the configured number of tolerated failed volumes |  Major | . | Yiqun Lin | Yiqun Lin |
+| [HADOOP-12822](https://issues.apache.org/jira/browse/HADOOP-12822) | Change "Metrics intern cache overflow" log level from WARN to INFO |  Minor | metrics | Akira Ajisaka | Andras Bokor |
+| [HADOOP-12969](https://issues.apache.org/jira/browse/HADOOP-12969) | Mark IPC.Client and IPC.Server as @Public, @Evolving |  Minor | ipc | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-12963](https://issues.apache.org/jira/browse/HADOOP-12963) | Allow using path style addressing for accessing the s3 endpoint |  Minor | fs/s3 | Andrew Baptist | Stephen Montgomery |
+| [HDFS-10280](https://issues.apache.org/jira/browse/HDFS-10280) | Document new dfsadmin command -evictWriters |  Minor | documentation | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-10292](https://issues.apache.org/jira/browse/HDFS-10292) | Add block id when client got Unable to close file exception |  Minor | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-9412](https://issues.apache.org/jira/browse/HDFS-9412) | getBlocks occupies FSLock and takes too long to complete |  Major | . | He Tianyi | He Tianyi |
+| [HDFS-10302](https://issues.apache.org/jira/browse/HDFS-10302) | BlockPlacementPolicyDefault should use default replication considerload value |  Trivial | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-10264](https://issues.apache.org/jira/browse/HDFS-10264) | Logging improvements in FSImageFormatProtobuf.Saver |  Major | namenode | Konstantin Shvachko | Xiaobing Zhou |
+| [HADOOP-12985](https://issues.apache.org/jira/browse/HADOOP-12985) | Support MetricsSource interface for DecayRpcScheduler Metrics |  Major | . | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-9894](https://issues.apache.org/jira/browse/HDFS-9894) | Add unsetStoragePolicy API to FileContext/AbstractFileSystem and derivatives |  Major | . | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-12891](https://issues.apache.org/jira/browse/HADOOP-12891) | S3AFileSystem should configure Multipart Copy threshold and chunk size |  Major | fs/s3 | Andrew Olson | Andrew Olson |
+| [HADOOP-13033](https://issues.apache.org/jira/browse/HADOOP-13033) | Add missing Javadoc enries to Interns.java |  Minor | metrics | Andras Bokor | Andras Bokor |
+| [HDFS-10298](https://issues.apache.org/jira/browse/HDFS-10298) | Document the usage of distcp -diff option |  Major | distcp, documentation | Akira Ajisaka | Takashi Ohnishi |
+| [HADOOP-13039](https://issues.apache.org/jira/browse/HADOOP-13039) | Add documentation for configuration property ipc.maximum.data.length for controlling maximum RPC message size. |  Major | documentation | Chris Nauroth | Mingliang Liu |
+| [HDFS-10330](https://issues.apache.org/jira/browse/HDFS-10330) | Add Corrupt Blocks Information in Metasave Output |  Major | . | Kuhu Shukla | Kuhu Shukla |
+| [HADOOP-5470](https://issues.apache.org/jira/browse/HADOOP-5470) | RunJar.unJar() should write the last modified time found in the jar entry to the uncompressed file |  Minor | util | Colin Evans | Andras Bokor |
+| [HDFS-3702](https://issues.apache.org/jira/browse/HDFS-3702) | Add an option for NOT writing the blocks locally if there is a datanode on the same box as the client |  Minor | hdfs-client | Nicolas Liochon | Lei (Eddy) Xu |
+| [HDFS-10297](https://issues.apache.org/jira/browse/HDFS-10297) | Increase default balance bandwidth and concurrent moves |  Minor | balancer & mover | John Zhuge | John Zhuge |
+| [HADOOP-12957](https://issues.apache.org/jira/browse/HADOOP-12957) | Limit the number of outstanding async calls |  Major | ipc | Xiaobing Zhou | Xiaobing Zhou |
+| [HDFS-9902](https://issues.apache.org/jira/browse/HDFS-9902) | Support different values of dfs.datanode.du.reserved per storage type |  Major | datanode | Pan Yuxuan | Brahma Reddy Battula |
+| [HADOOP-13103](https://issues.apache.org/jira/browse/HADOOP-13103) | Group resolution from LDAP may fail on javax.naming.ServiceUnavailableException |  Minor | security | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [MAPREDUCE-6678](https://issues.apache.org/jira/browse/MAPREDUCE-6678) | Allow ShuffleHandler readahead without drop-behind |  Major | nodemanager | Nathan Roberts | Nathan Roberts |
+| [HADOOP-12982](https://issues.apache.org/jira/browse/HADOOP-12982) | Document missing S3A and S3 properties |  Minor | documentation, fs/s3, tools | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4995](https://issues.apache.org/jira/browse/YARN-4995) | FairScheduler: Display per-queue demand on the scheduler page |  Minor | . | xupeng | xupeng |
+| [HADOOP-12868](https://issues.apache.org/jira/browse/HADOOP-12868) | Fix hadoop-openstack undeclared and unused dependencies |  Major | tools | Allen Wittenauer | Masatake Iwasaki |
+| [HADOOP-12971](https://issues.apache.org/jira/browse/HADOOP-12971) | FileSystemShell doc should explain relative path |  Critical | documentation | John Zhuge | John Zhuge |
+| [HADOOP-13148](https://issues.apache.org/jira/browse/HADOOP-13148) | TestDistCpViewFs to include IOExceptions in test error reports |  Minor | tools/distcp | Steve Loughran | Steve Loughran |
+| [HADOOP-13146](https://issues.apache.org/jira/browse/HADOOP-13146) | Refactor RetryInvocationHandler |  Minor | io | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-10383](https://issues.apache.org/jira/browse/HDFS-10383) | Safely close resources in DFSTestUtil |  Major | test | Mingliang Liu | Mingliang Liu |
+| [YARN-4002](https://issues.apache.org/jira/browse/YARN-4002) | make ResourceTrackerService.nodeHeartbeat more concurrent |  Critical | . | Hong Zhiguo | Hong Zhiguo |
+| [HDFS-10417](https://issues.apache.org/jira/browse/HDFS-10417) | Improve error message from checkBlockLocalPathAccess |  Minor | datanode | Tianyin Xu | Tianyin Xu |
+| [HADOOP-13168](https://issues.apache.org/jira/browse/HADOOP-13168) | Support Future.get with timeout in ipc async calls |  Major | ipc | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HADOOP-13145](https://issues.apache.org/jira/browse/HADOOP-13145) | In DistCp, prevent unnecessary getFileStatus call when not preserving metadata. |  Major | tools/distcp | Chris Nauroth | Chris Nauroth |
+| [HADOOP-13198](https://issues.apache.org/jira/browse/HADOOP-13198) | Add support for OWASP's dependency-check |  Minor | build, security | Mike Yoder | Mike Yoder |
+| [HDFS-10217](https://issues.apache.org/jira/browse/HDFS-10217) | show 'blockScheduled' tooltip in datanodes table. |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13199](https://issues.apache.org/jira/browse/HADOOP-13199) | Add doc for distcp -filters |  Trivial | documentation | John Zhuge | John Zhuge |
+| [HADOOP-13193](https://issues.apache.org/jira/browse/HADOOP-13193) | Upgrade to Apache Yetus 0.3.0 |  Major | documentation, test | Allen Wittenauer | Kengo Seki |
+| [HDFS-10341](https://issues.apache.org/jira/browse/HDFS-10341) | Add a metric to expose the timeout number of pending replication blocks |  Major | . | Akira Ajisaka | Akira Ajisaka |
+| [HADOOP-13105](https://issues.apache.org/jira/browse/HADOOP-13105) | Support timeouts in LDAP queries in LdapGroupsMapping. |  Major | security | Chris Nauroth | Mingliang Liu |
+| [HADOOP-12807](https://issues.apache.org/jira/browse/HADOOP-12807) | S3AFileSystem should read AWS credentials from environment variables |  Minor | fs/s3 | Tobin Baker | Tobin Baker |
+| [MAPREDUCE-5044](https://issues.apache.org/jira/browse/MAPREDUCE-5044) | Have AM trigger jstack on task attempts that timeout before killing them |  Major | mr-am | Jason Lowe | Eric Payne |
+| [HADOOP-10048](https://issues.apache.org/jira/browse/HADOOP-10048) | LocalDirAllocator should avoid holding locks while accessing the filesystem |  Major | . | Jason Lowe | Jason Lowe |
+| [MAPREDUCE-6714](https://issues.apache.org/jira/browse/MAPREDUCE-6714) | Refactor UncompressedSplitLineReader.fillBuffer() |  Major | . | Daniel Templeton | Daniel Templeton |
+| [HADOOP-12943](https://issues.apache.org/jira/browse/HADOOP-12943) | Add -w -r options in dfs -test command |  Major | fs, scripts, tools | Weiwei Yang | Weiwei Yang |
+| [HDFS-10493](https://issues.apache.org/jira/browse/HDFS-10493) | Add links to datanode web UI in namenode datanodes page |  Major | namenode, ui | Weiwei Yang | Weiwei Yang |
+| [HADOOP-13296](https://issues.apache.org/jira/browse/HADOOP-13296) | Cleanup javadoc for Path |  Minor | documentation | Daniel Templeton | Daniel Templeton |
+| [HDFS-7597](https://issues.apache.org/jira/browse/HDFS-7597) | DelegationTokenIdentifier should cache the TokenIdentifier to UGI mapping |  Critical | webhdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13307](https://issues.apache.org/jira/browse/HADOOP-13307) | add rsync to Dockerfile so that precommit archive works |  Trivial | build | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-13067](https://issues.apache.org/jira/browse/HADOOP-13067) | cleanup the dockerfile |  Major | . | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-13227](https://issues.apache.org/jira/browse/HADOOP-13227) | AsyncCallHandler should use an event driven architecture to handle async calls |  Major | io, ipc | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HADOOP-13263](https://issues.apache.org/jira/browse/HADOOP-13263) | Reload cached groups in background after expiry |  Major | . | Stephen O'Donnell | Stephen O'Donnell |
+| [HDFS-10440](https://issues.apache.org/jira/browse/HDFS-10440) | Improve DataNode web UI |  Major | datanode, ui | Weiwei Yang | Weiwei Yang |
+| [HADOOP-13239](https://issues.apache.org/jira/browse/HADOOP-13239) | Deprecate s3:// in branch-2 |  Major | fs/s3 | Mingliang Liu | Mingliang Liu |
+| [HDFS-10582](https://issues.apache.org/jira/browse/HDFS-10582) | Change deprecated configuration fs.checkpoint.dir to dfs.namenode.checkpoint.dir in HDFS Commands Doc |  Minor | documentation | Pan Yuxuan | Pan Yuxuan |
+| [HDFS-10488](https://issues.apache.org/jira/browse/HDFS-10488) | Update WebHDFS documentation regarding CREATE and MKDIR default permissions |  Minor | documentation, webhdfs | Wellington Chevreuil | Wellington Chevreuil |
+| [HDFS-10300](https://issues.apache.org/jira/browse/HDFS-10300) | TestDistCpSystem should share MiniDFSCluster |  Trivial | test | John Zhuge | John Zhuge |
+| [HADOOP-13290](https://issues.apache.org/jira/browse/HADOOP-13290) | Appropriate use of generics in FairCallQueue |  Major | ipc | Konstantin Shvachko | Jonathan Hung |
+| [HADOOP-13289](https://issues.apache.org/jira/browse/HADOOP-13289) | Remove unused variables in TestFairCallQueue |  Minor | test | Konstantin Shvachko | Ye Zhou |
+| [HDFS-10628](https://issues.apache.org/jira/browse/HDFS-10628) | Log HDFS Balancer exit message to its own log |  Minor | balancer & mover | Jiayi Zhou | Jiayi Zhou |
+| [HADOOP-13298](https://issues.apache.org/jira/browse/HADOOP-13298) | Fix the leftover L&N files in hadoop-build-tools/src/main/resources/META-INF/ |  Minor | . | Xiao Chen | Tsuyoshi Ozawa |
+| [YARN-4883](https://issues.apache.org/jira/browse/YARN-4883) | Make consistent operation name in AdminService |  Minor | resourcemanager | Kai Sasaki | Kai Sasaki |
+| [YARN-1126](https://issues.apache.org/jira/browse/YARN-1126) | Add validation of users input nodes-states options to nodes CLI |  Major | . | Wei Yan | Wei Yan |
+| [HDFS-10287](https://issues.apache.org/jira/browse/HDFS-10287) | MiniDFSCluster should implement AutoCloseable |  Minor | test | John Zhuge | Andras Bokor |
+| [HDFS-10225](https://issues.apache.org/jira/browse/HDFS-10225) | DataNode hot swap drives should disallow storage type changes. |  Major | datanode | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HDFS-10660](https://issues.apache.org/jira/browse/HDFS-10660) | Expose storage policy apis via HDFSAdmin interface |  Major | . | Rakesh R | Rakesh R |
+| [HDFS-9937](https://issues.apache.org/jira/browse/HDFS-9937) | Update dfsadmin command line help and HdfsQuotaAdminGuide |  Minor | . | Wei-Chiu Chuang | Kai Sasaki |
+| [HDFS-10667](https://issues.apache.org/jira/browse/HDFS-10667) | Report more accurate info about data corruption location |  Major | datanode, hdfs | Yongjun Zhang | Yuanbo Liu |
+| [HDFS-10676](https://issues.apache.org/jira/browse/HDFS-10676) | Add namenode metric to measure time spent in generating EDEKs |  Major | namenode | Hanisha Koneru | Hanisha Koneru |
+| [MAPREDUCE-6746](https://issues.apache.org/jira/browse/MAPREDUCE-6746) | Replace org.apache.commons.io.Charsets with java.nio.charset.StandardCharsets |  Minor | . | Vincent Poon | Vincent Poon |
+| [HDFS-10703](https://issues.apache.org/jira/browse/HDFS-10703) | HA NameNode Web UI should show last checkpoint time |  Minor | ui | John Zhuge | John Zhuge |
+| [MAPREDUCE-6729](https://issues.apache.org/jira/browse/MAPREDUCE-6729) | Accurately compute the test execute time in DFSIO |  Minor | benchmarks, performance, test | mingleizhang | mingleizhang |
+| [HADOOP-13444](https://issues.apache.org/jira/browse/HADOOP-13444) | Replace org.apache.commons.io.Charsets with java.nio.charset.StandardCharsets |  Minor | . | Vincent Poon | Vincent Poon |
+| [YARN-5456](https://issues.apache.org/jira/browse/YARN-5456) | container-executor support for FreeBSD, NetBSD, and others if conf path is absolute |  Major | nodemanager, security | Allen Wittenauer | Allen Wittenauer |
+| [MAPREDUCE-6730](https://issues.apache.org/jira/browse/MAPREDUCE-6730) | Use StandardCharsets instead of String overload in TextOutputFormat |  Minor | . | Sahil Kang | Sahil Kang |
+| [HDFS-10707](https://issues.apache.org/jira/browse/HDFS-10707) | Replace org.apache.commons.io.Charsets with java.nio.charset.StandardCharsets |  Minor | . | Vincent Poon | Vincent Poon |
+| [HADOOP-13442](https://issues.apache.org/jira/browse/HADOOP-13442) | Optimize UGI group lookups |  Major | . | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13466](https://issues.apache.org/jira/browse/HADOOP-13466) | Add an AutoCloseableLock class |  Major | . | Chen Liang | Chen Liang |
+| [YARN-5483](https://issues.apache.org/jira/browse/YARN-5483) | Optimize RMAppAttempt#pullJustFinishedContainers |  Major | . | sandflee | sandflee |
+| [HADOOP-13190](https://issues.apache.org/jira/browse/HADOOP-13190) | Mention LoadBalancingKMSClientProvider in KMS HA documentation |  Major | documentation, kms | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-10677](https://issues.apache.org/jira/browse/HDFS-10677) | Über-jira: Enhancements to NNThroughputBenchmark tool |  Major | benchmarks, tools | Mingliang Liu | Mingliang Liu |
+| [HDFS-10342](https://issues.apache.org/jira/browse/HDFS-10342) | BlockManager#createLocatedBlocks should not check corrupt replicas if none are corrupt |  Major | hdfs | Daryn Sharp | Kuhu Shukla |
+| [HDFS-10682](https://issues.apache.org/jira/browse/HDFS-10682) | Replace FsDatasetImpl object lock with a separate lock object |  Major | datanode | Chen Liang | Chen Liang |
+| [HADOOP-13503](https://issues.apache.org/jira/browse/HADOOP-13503) | Improve SaslRpcClient failure logging |  Major | security | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-13527](https://issues.apache.org/jira/browse/HADOOP-13527) | Add Spark to CallerContext LimitedPrivate scope |  Minor | ipc | Weiqing Yang | Weiqing Yang |
+| [MAPREDUCE-6587](https://issues.apache.org/jira/browse/MAPREDUCE-6587) | Remove unused params in connection-related methods of Fetcher |  Minor | . | Yiqun Lin | Yiqun Lin |
+| [HADOOP-13538](https://issues.apache.org/jira/browse/HADOOP-13538) | Deprecate getInstance and initialize methods with Path in TrashPolicy |  Minor | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-8986](https://issues.apache.org/jira/browse/HDFS-8986) | Add option to -du to calculate directory space usage excluding snapshots |  Major | snapshots | Gautam Gopalakrishnan | Xiao Chen |
+| [HDFS-10798](https://issues.apache.org/jira/browse/HDFS-10798) | Make the threshold of reporting FSNamesystem lock contention configurable |  Major | logging, namenode | Zhe Zhang | Erik Krogen |
+| [YARN-5550](https://issues.apache.org/jira/browse/YARN-5550) | TestYarnCLI#testGetContainers should format according to CONTAINER\_PATTERN |  Minor | client, test | Jonathan Hung | Jonathan Hung |
+| [HDFS-10814](https://issues.apache.org/jira/browse/HDFS-10814) | Add assertion for getNumEncryptionZones when no EZ is created |  Minor | test | Vinitha Reddy Gankidi | Vinitha Reddy Gankidi |
+| [HDFS-10817](https://issues.apache.org/jira/browse/HDFS-10817) | Add Logging for Long-held NN Read Locks |  Major | logging, namenode | Erik Krogen | Erik Krogen |
+| [HADOOP-13465](https://issues.apache.org/jira/browse/HADOOP-13465) | Design Server.Call to be extensible for unified call queue |  Major | ipc | Daryn Sharp | Daryn Sharp |
+| [HDFS-10833](https://issues.apache.org/jira/browse/HDFS-10833) | Fix JSON errors in WebHDFS.md examples |  Trivial | documentation | Andrew Wang | Andrew Wang |
+| [HDFS-10742](https://issues.apache.org/jira/browse/HDFS-10742) | Measure lock time in FsDatasetImpl |  Major | datanode | Chen Liang | Chen Liang |
+| [HDFS-10831](https://issues.apache.org/jira/browse/HDFS-10831) | Add log when URLConnectionFactory.openConnection failed |  Minor | webhdfs | yunjiong zhao | yunjiong zhao |
+| [HADOOP-13598](https://issues.apache.org/jira/browse/HADOOP-13598) | Add eol=lf for unix format files in .gitattributes |  Major | . | Akira Ajisaka | Yiqun Lin |
+| [HADOOP-13580](https://issues.apache.org/jira/browse/HADOOP-13580) | If user is unauthorized, log "unauthorized" instead of "Invalid signed text:" |  Minor | security | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-10489](https://issues.apache.org/jira/browse/HDFS-10489) | Deprecate dfs.encryption.key.provider.uri for HDFS encryption zones |  Minor | . | Xiao Chen | Xiao Chen |
+| [YARN-5540](https://issues.apache.org/jira/browse/YARN-5540) | scheduler spends too much time looking at empty priorities |  Major | capacity scheduler, fairscheduler, resourcemanager | Nathan Roberts | Jason Lowe |
+| [HADOOP-13169](https://issues.apache.org/jira/browse/HADOOP-13169) | Randomize file list in SimpleCopyListing |  Minor | tools/distcp | Rajesh Balamohan | Rajesh Balamohan |
+| [HDFS-10875](https://issues.apache.org/jira/browse/HDFS-10875) | Optimize du -x to cache intermediate result |  Major | snapshots | Xiao Chen | Xiao Chen |
+| [YARN-4591](https://issues.apache.org/jira/browse/YARN-4591) | YARN Web UIs should provide a robots.txt |  Trivial | . | Lars Francke | Sidharta Seethana |
+| [YARN-5622](https://issues.apache.org/jira/browse/YARN-5622) | TestYarnCLI.testGetContainers fails due to mismatched date formats |  Minor | . | Eric Badger | Eric Badger |
+| [HDFS-10876](https://issues.apache.org/jira/browse/HDFS-10876) | Dispatcher#dispatch should log IOException stacktrace |  Trivial | balancer & mover | Wei-Chiu Chuang | Manoj Govindassamy |
+| [YARN-3692](https://issues.apache.org/jira/browse/YARN-3692) | Allow REST API to set a user generated message when killing an application |  Major | . | Rajat Jain | Rohith Sharma K S |
+| [HDFS-10869](https://issues.apache.org/jira/browse/HDFS-10869) | Remove the unused method InodeId#checkId() |  Major | namenode | Jagadesh Kiran N | Jagadesh Kiran N |
+| [YARN-3877](https://issues.apache.org/jira/browse/YARN-3877) | YarnClientImpl.submitApplication swallows exceptions |  Minor | client | Steve Loughran | Varun Saxena |
+| [HADOOP-13658](https://issues.apache.org/jira/browse/HADOOP-13658) | Replace config key literal strings with config key names I: hadoop common |  Minor | conf | Chen Liang | Chen Liang |
+| [HADOOP-13537](https://issues.apache.org/jira/browse/HADOOP-13537) | Support external calls in the RPC call queue |  Major | ipc | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13317](https://issues.apache.org/jira/browse/HADOOP-13317) | Add logs to KMS server-side to improve supportability |  Minor | kms | Xiao Chen | Suraj Acharya |
+| [HDFS-10940](https://issues.apache.org/jira/browse/HDFS-10940) | Reduce performance penalty of block caching when not used |  Major | namenode | Daryn Sharp | Daryn Sharp |
+| [YARN-4855](https://issues.apache.org/jira/browse/YARN-4855) | Should check if node exists when replace nodelabels |  Minor | . | Tao Jie | Tao Jie |
+| [HDFS-10690](https://issues.apache.org/jira/browse/HDFS-10690) | Optimize insertion/removal of replica in ShortCircuitCache |  Major | hdfs-client | Fenghua Hu | Fenghua Hu |
+| [HADOOP-13685](https://issues.apache.org/jira/browse/HADOOP-13685) | Document -safely option of rm command. |  Major | . | Xiaoyu Yao | Xiaoyu Yao |
+| [MAPREDUCE-6741](https://issues.apache.org/jira/browse/MAPREDUCE-6741) | add MR support to redact job conf properties |  Major | mrv2 | Haibo Chen | Haibo Chen |
+| [HDFS-10963](https://issues.apache.org/jira/browse/HDFS-10963) | Reduce log level when network topology cannot find enough datanodes. |  Minor | . | Xiao Chen | Xiao Chen |
+| [HADOOP-13323](https://issues.apache.org/jira/browse/HADOOP-13323) | Downgrade stack trace on FS load from Warn to debug |  Minor | fs | Steve Loughran | Steve Loughran |
+| [HADOOP-13150](https://issues.apache.org/jira/browse/HADOOP-13150) | Avoid use of toString() in output of HDFS ACL shell commands. |  Minor | . | Chris Nauroth | Chris Nauroth |
+| [HADOOP-13689](https://issues.apache.org/jira/browse/HADOOP-13689) | Do not attach javadoc and sources jars during non-dist build |  Major | . | Andrew Wang | Andrew Wang |
+| [HADOOP-13641](https://issues.apache.org/jira/browse/HADOOP-13641) | Update UGI#spawnAutoRenewalThreadForUserCreds to reduce indentation |  Minor | . | Xiao Chen | Huafeng Wang |
+| [HDFS-10933](https://issues.apache.org/jira/browse/HDFS-10933) | Refactor TestFsck |  Minor | . | Takanobu Asanuma | Takanobu Asanuma |
+| [HADOOP-13684](https://issues.apache.org/jira/browse/HADOOP-13684) | Snappy may complain Hadoop is built without snappy if libhadoop is not found. |  Minor | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-13698](https://issues.apache.org/jira/browse/HADOOP-13698) | Document caveat for KeyShell when underlying KeyProvider does not delete a key |  Minor | documentation, kms | Xiao Chen | Xiao Chen |
+| [HDFS-10789](https://issues.apache.org/jira/browse/HDFS-10789) | Route webhdfs through the RPC call queue |  Major | ipc, webhdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10903](https://issues.apache.org/jira/browse/HDFS-10903) | Replace config key literal strings with config key names II: hadoop hdfs |  Minor | . | Mingliang Liu | Chen Liang |
+| [HADOOP-13710](https://issues.apache.org/jira/browse/HADOOP-13710) | Supress CachingGetSpaceUsed from logging interrupted exception stacktrace |  Minor | fs | Wei-Chiu Chuang | Hanisha Koneru |
+| [YARN-5599](https://issues.apache.org/jira/browse/YARN-5599) | Publish AM launch command to ATS |  Major | . | Daniel Templeton | Rohith Sharma K S |
+| [HDFS-11012](https://issues.apache.org/jira/browse/HDFS-11012) | Unnecessary INFO logging on DFSClients for InvalidToken |  Minor | fs | Harsh J | Harsh J |
+| [HDFS-11003](https://issues.apache.org/jira/browse/HDFS-11003) | Expose "XmitsInProgress" through DataNodeMXBean |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13724](https://issues.apache.org/jira/browse/HADOOP-13724) | Fix a few typos in site markdown documents |  Minor | documentation | Andrew Wang | Ding Fei |
+| [HDFS-11009](https://issues.apache.org/jira/browse/HDFS-11009) | Add a tool to reconstruct block meta file from CLI |  Major | datanode | Xiao Chen | Xiao Chen |
+| [HDFS-9480](https://issues.apache.org/jira/browse/HDFS-9480) |  Expose nonDfsUsed via StorageTypeStats |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12082](https://issues.apache.org/jira/browse/HADOOP-12082) | Support multiple authentication schemes via AuthenticationFilter |  Major | security | Hrishikesh Gadre | Hrishikesh Gadre |
+| [HADOOP-13669](https://issues.apache.org/jira/browse/HADOOP-13669) | KMS Server should log exceptions before throwing |  Major | kms | Xiao Chen | Suraj Acharya |
+| [HADOOP-13502](https://issues.apache.org/jira/browse/HADOOP-13502) | Split fs.contract.is-blobstore flag into more descriptive flags for use by contract tests. |  Minor | test | Chris Nauroth | Chris Nauroth |
+| [HADOOP-13017](https://issues.apache.org/jira/browse/HADOOP-13017) | Implementations of InputStream.read(buffer, offset, bytes) to exit 0 if bytes==0 |  Major | fs, io | Steve Loughran | Steve Loughran |
+| [HDFS-11055](https://issues.apache.org/jira/browse/HDFS-11055) | Update default-log4j.properties for httpfs to imporve test logging |  Major | httpfs, test | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4963](https://issues.apache.org/jira/browse/YARN-4963) | capacity scheduler: Make number of OFF\_SWITCH assignments per heartbeat configurable |  Major | capacityscheduler | Nathan Roberts | Nathan Roberts |
+| [HDFS-11047](https://issues.apache.org/jira/browse/HDFS-11047) | Remove deep copies of FinalizedReplica to alleviate heap consumption on DataNode |  Major | datanode | Xiaobing Zhou | Xiaobing Zhou |
+| [MAPREDUCE-6799](https://issues.apache.org/jira/browse/MAPREDUCE-6799) | Document mapreduce.jobhistory.webapp.https.address in mapred-default.xml |  Minor | documentation, jobhistoryserver | Akira Ajisaka | Yiqun Lin |
+| [HADOOP-12325](https://issues.apache.org/jira/browse/HADOOP-12325) | RPC Metrics : Add the ability track and log slow RPCs |  Major | ipc, metrics | Anu Engineer | Anu Engineer |
+| [HDFS-11074](https://issues.apache.org/jira/browse/HDFS-11074) | Remove unused method FsDatasetSpi#getFinalizedBlocksOnPersistentStorage |  Major | datanode | Arpit Agarwal | Hanisha Koneru |
+| [MAPREDUCE-6795](https://issues.apache.org/jira/browse/MAPREDUCE-6795) | Update the document for JobConf#setNumReduceTasks |  Major | documentation | Akira Ajisaka | Yiqun Lin |
+| [HADOOP-13603](https://issues.apache.org/jira/browse/HADOOP-13603) | Ignore package line length checkstyle rule |  Major | build | Shane Kumpf | Shane Kumpf |
+| [HADOOP-13583](https://issues.apache.org/jira/browse/HADOOP-13583) | Incorporate checkcompatibility script which runs Java API Compliance Checker |  Major | scripts | Andrew Wang | Andrew Wang |
+| [HDFS-11080](https://issues.apache.org/jira/browse/HDFS-11080) | Update HttpFS to use ConfigRedactor |  Major | . | Sean Mackrory | Sean Mackrory |
+| [YARN-5697](https://issues.apache.org/jira/browse/YARN-5697) | Use CliParser to parse options in RMAdminCLI |  Major | . | Tao Jie | Tao Jie |
+| [HADOOP-12453](https://issues.apache.org/jira/browse/HADOOP-12453) | Support decoding KMS Delegation Token with its own Identifier |  Major | kms, security | Xiaoyu Yao | Xiaoyu Yao |
+| [HADOOP-7930](https://issues.apache.org/jira/browse/HADOOP-7930) | Kerberos relogin interval in UserGroupInformation should be configurable |  Major | security | Alejandro Abdelnur | Robert Kanter |
+| [YARN-5720](https://issues.apache.org/jira/browse/YARN-5720) | Update document for "rmadmin -replaceLabelOnNode" |  Minor | . | Tao Jie | Tao Jie |
+| [HADOOP-13782](https://issues.apache.org/jira/browse/HADOOP-13782) | Make MutableRates metrics thread-local write, aggregate-on-read |  Major | metrics | Erik Krogen | Erik Krogen |
+| [HADOOP-13590](https://issues.apache.org/jira/browse/HADOOP-13590) | Retry until TGT expires even if the UGI renewal thread encountered exception |  Major | security | Xiao Chen | Xiao Chen |
+| [HDFS-11120](https://issues.apache.org/jira/browse/HDFS-11120) | TestEncryptionZones should waitActive |  Minor | test | Xiao Chen | John Zhuge |
+| [HADOOP-13720](https://issues.apache.org/jira/browse/HADOOP-13720) | Add more info to the msgs printed in AbstractDelegationTokenSecretManager for better supportability |  Trivial | common, security | Yongjun Zhang | Yongjun Zhang |
+| [HDFS-10941](https://issues.apache.org/jira/browse/HDFS-10941) | Improve BlockManager#processMisReplicatesAsync log |  Major | namenode | Xiaoyu Yao | Chen Liang |
+| [HADOOP-13810](https://issues.apache.org/jira/browse/HADOOP-13810) | Add a test to verify that Configuration handles &-encoded characters |  Minor | test | Steve Loughran | Steve Loughran |
+| [HADOOP-13742](https://issues.apache.org/jira/browse/HADOOP-13742) | Expose "NumOpenConnectionsPerUser" as a metric |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13646](https://issues.apache.org/jira/browse/HADOOP-13646) | Remove outdated overview.html |  Minor | . | Akira Ajisaka | Brahma Reddy Battula |
+| [HADOOP-13166](https://issues.apache.org/jira/browse/HADOOP-13166) | add getFileStatus("/") test to AbstractContractGetFileStatusTest |  Minor | fs, test | Steve Loughran | Steve Loughran |
+| [HADOOP-11603](https://issues.apache.org/jira/browse/HADOOP-11603) | Metric Snapshot log can be changed #MetricsSystemImpl.java since all the services will be initialized |  Minor | metrics | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-10776](https://issues.apache.org/jira/browse/HADOOP-10776) | Open up already widely-used APIs for delegation-token fetching & renewal to ecosystem projects |  Blocker | . | Robert Joseph Evans | Vinod Kumar Vavilapalli |
+| [HDFS-11175](https://issues.apache.org/jira/browse/HDFS-11175) | Document uppercase key names are not supported in TransparentEncryption.md |  Minor | documentation | Yuanbo Liu | Yiqun Lin |
+| [HADOOP-13790](https://issues.apache.org/jira/browse/HADOOP-13790) | Make qbt script executable |  Trivial | scripts | Andrew Wang | Andrew Wang |
+| [HDFS-8674](https://issues.apache.org/jira/browse/HDFS-8674) | Improve performance of postponed block scans |  Critical | namenode | Daryn Sharp | Daryn Sharp |
+| [HDFS-10581](https://issues.apache.org/jira/browse/HDFS-10581) | Hide redundant table on NameNode WebUI when no nodes are decomissioning |  Trivial | hdfs, ui | Weiwei Yang | Weiwei Yang |
+| [HDFS-11217](https://issues.apache.org/jira/browse/HDFS-11217) | Annotate NameNode and DataNode MXBean interfaces as Private/Stable |  Major | . | Akira Ajisaka | Jagadesh Kiran N |
+| [HADOOP-13900](https://issues.apache.org/jira/browse/HADOOP-13900) | Remove snapshot version of SDK dependency from Azure Data Lake Store File System |  Major | fs/adl | Vishwajeet Dusane | Vishwajeet Dusane |
+| [HDFS-11249](https://issues.apache.org/jira/browse/HDFS-11249) | Redundant toString() in DFSConfigKeys.java |  Trivial | . | Akira Ajisaka | Jagadesh Kiran N |
+| [YARN-5882](https://issues.apache.org/jira/browse/YARN-5882) | Test only changes from YARN-4126 |  Major | . | Andrew Wang | Jian He |
+| [HDFS-11262](https://issues.apache.org/jira/browse/HDFS-11262) | Remove unused variables in FSImage.java |  Trivial | . | Akira Ajisaka | Jagadesh Kiran N |
+| [YARN-4994](https://issues.apache.org/jira/browse/YARN-4994) | Use MiniYARNCluster with try-with-resources in tests |  Trivial | test | Andras Bokor | Andras Bokor |
+| [YARN-5709](https://issues.apache.org/jira/browse/YARN-5709) | Cleanup leader election configs and pluggability |  Critical | resourcemanager | Karthik Kambatla | Karthik Kambatla |
+| [HDFS-9483](https://issues.apache.org/jira/browse/HDFS-9483) | Documentation does not cover use of "swebhdfs" as URL scheme for SSL-secured WebHDFS. |  Major | documentation | Chris Nauroth | Surendra Singh Lilhore |
+| [HDFS-11292](https://issues.apache.org/jira/browse/HDFS-11292) | log lastWrittenTxId etc info in logSyncAll |  Major | hdfs | Yongjun Zhang | Yongjun Zhang |
+| [HADOOP-13956](https://issues.apache.org/jira/browse/HADOOP-13956) | Read ADLS credentials from Credential Provider |  Critical | fs/adl | John Zhuge | John Zhuge |
+| [HADOOP-13962](https://issues.apache.org/jira/browse/HADOOP-13962) | Update ADLS SDK to 2.1.4 |  Major | fs/adl | John Zhuge | John Zhuge |
+| [HADOOP-13037](https://issues.apache.org/jira/browse/HADOOP-13037) | Refactor Azure Data Lake Store as an independent FileSystem |  Major | fs/adl | Shrikant Naidu | Vishwajeet Dusane |
+| [HADOOP-13946](https://issues.apache.org/jira/browse/HADOOP-13946) | Document how HDFS updates timestamps in the FS spec; compare with object stores |  Minor | documentation, fs | Steve Loughran | Steve Loughran |
+| [HDFS-10601](https://issues.apache.org/jira/browse/HDFS-10601) | Improve log message to include hostname when the NameNode is in safemode |  Minor | . | Kuhu Shukla | Kuhu Shukla |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-8818](https://issues.apache.org/jira/browse/HADOOP-8818) | Should use equals() rather than == to compare String or Text in MD5MD5CRC32FileChecksum and TFileDumper |  Minor | fs, io | Brandon Li | Brandon Li |
+| [HADOOP-8436](https://issues.apache.org/jira/browse/HADOOP-8436) | NPE In getLocalPathForWrite ( path, conf ) when the required context item is not configured |  Major | fs | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-9121](https://issues.apache.org/jira/browse/HADOOP-9121) | InodeTree.java has redundant check for vName while throwing exception |  Major | fs | Arup Malakar | Arup Malakar |
+| [HADOOP-9242](https://issues.apache.org/jira/browse/HADOOP-9242) | Duplicate surefire plugin config in hadoop-common |  Major | test | Andrey Klochkov | Andrey Klochkov |
+| [HADOOP-8419](https://issues.apache.org/jira/browse/HADOOP-8419) | GzipCodec NPE upon reset with IBM JDK |  Major | io | Luke Lu | Yu Li |
+| [HDFS-4366](https://issues.apache.org/jira/browse/HDFS-4366) | Block Replication Policy Implementation May Skip Higher-Priority Blocks for Lower-Priority Blocks |  Major | . | Derek Dagit | Derek Dagit |
+| [HADOOP-11559](https://issues.apache.org/jira/browse/HADOOP-11559) | Add links to RackAwareness and InterfaceClassification to site index |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-11581](https://issues.apache.org/jira/browse/HADOOP-11581) | Fix Multithreaded correctness Warnings #org.apache.hadoop.fs.shell.Ls |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-11568](https://issues.apache.org/jira/browse/HADOOP-11568) | Description on usage of classpath in hadoop command is incomplete. |  Trivial | tools | Archana T | Archana T |
+| [HADOOP-10027](https://issues.apache.org/jira/browse/HADOOP-10027) | \*Compressor\_deflateBytesDirect passes instance instead of jclass to GetStaticObjectField |  Minor | native | Eric Abbott | Hui Zheng |
+| [HDFS-5356](https://issues.apache.org/jira/browse/HDFS-5356) | MiniDFSCluster shoud close all open FileSystems when shutdown() |  Critical | test | haosdent | Rakesh R |
+| [YARN-3197](https://issues.apache.org/jira/browse/YARN-3197) | Confusing log generated by CapacityScheduler |  Minor | capacityscheduler | Hitesh Shah | Varun Saxena |
+| [YARN-3243](https://issues.apache.org/jira/browse/YARN-3243) | CapacityScheduler should pass headroom from parent to children to make sure ParentQueue obey its capacity limits. |  Major | capacityscheduler, resourcemanager | Wangda Tan | Wangda Tan |
+| [YARN-3305](https://issues.apache.org/jira/browse/YARN-3305) | AM-Used Resource for leafqueue is wrongly populated if AM ResourceRequest is less than minimumAllocation |  Major | scheduler | Rohith Sharma K S | Rohith Sharma K S |
+| [YARN-3205](https://issues.apache.org/jira/browse/YARN-3205) | FileSystemRMStateStore should disable FileSystem Cache to avoid get a Filesystem with an old configuration. |  Major | resourcemanager | zhihai xu | zhihai xu |
+| [MAPREDUCE-5807](https://issues.apache.org/jira/browse/MAPREDUCE-5807) | Print usage for TeraSort job. |  Trivial | examples | Rohith Sharma K S | Rohith Sharma K S |
+| [YARN-3351](https://issues.apache.org/jira/browse/YARN-3351) | AppMaster tracking URL is broken in HA |  Major | webapp | Anubhav Dhoot | Anubhav Dhoot |
+| [HDFS-7867](https://issues.apache.org/jira/browse/HDFS-7867) | Update action param from "start" to "prepare" in rolling upgrade javadoc |  Trivial | . | J.Andreina | J.Andreina |
+| [MAPREDUCE-6281](https://issues.apache.org/jira/browse/MAPREDUCE-6281) | Fix javadoc in Terasort |  Trivial | . | Albert Chu | Albert Chu |
+| [YARN-3269](https://issues.apache.org/jira/browse/YARN-3269) | Yarn.nodemanager.remote-app-log-dir could not be configured to fully qualified path |  Major | . | Xuan Gong | Xuan Gong |
+| [MAPREDUCE-6213](https://issues.apache.org/jira/browse/MAPREDUCE-6213) | NullPointerException caused by job history server addr not resolvable |  Minor | applicationmaster | Peng Zhang | Peng Zhang |
+| [MAPREDUCE-5448](https://issues.apache.org/jira/browse/MAPREDUCE-5448) | MapFileOutputFormat#getReaders bug with invisible files/folders |  Minor | mrv2 | Maysam Yabandeh | Maysam Yabandeh |
+| [MAPREDUCE-6242](https://issues.apache.org/jira/browse/MAPREDUCE-6242) | Progress report log is incredibly excessive in application master |  Major | applicationmaster | Jian Fang | Varun Saxena |
+| [HDFS-3325](https://issues.apache.org/jira/browse/HDFS-3325) | When configuring "dfs.namenode.safemode.threshold-pct" to a value greater or equal to 1 there is mismatch in the UI report |  Minor | . | J.Andreina | J.Andreina |
+| [YARN-3383](https://issues.apache.org/jira/browse/YARN-3383) | AdminService should use "warn" instead of "info" to log exception when operation fails |  Major | resourcemanager | Wangda Tan | Li Lu |
+| [YARN-3397](https://issues.apache.org/jira/browse/YARN-3397) | yarn rmadmin should skip -failover |  Minor | resourcemanager | J.Andreina | J.Andreina |
+| [HADOOP-11724](https://issues.apache.org/jira/browse/HADOOP-11724) | DistCp throws NPE when the target directory is root. |  Minor | . | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [YARN-3400](https://issues.apache.org/jira/browse/YARN-3400) | [JDK 8] Build Failure due to unreported exceptions in RPCUtil |  Major | . | Robert Kanter | Robert Kanter |
+| [HDFS-7990](https://issues.apache.org/jira/browse/HDFS-7990) | IBR delete ack should not be delayed |  Major | namenode | Daryn Sharp | Daryn Sharp |
+| [HADOOP-11760](https://issues.apache.org/jira/browse/HADOOP-11760) | Fix typo of javadoc in DistCp |  Trivial | . | Chen He | Brahma Reddy Battula |
+| [MAPREDUCE-6294](https://issues.apache.org/jira/browse/MAPREDUCE-6294) | Remove an extra parameter described in Javadoc of TockenCache |  Trivial | . | Chen He | Brahma Reddy Battula |
+| [HDFS-7501](https://issues.apache.org/jira/browse/HDFS-7501) | TransactionsSinceLastCheckpoint can be negative on SBNs |  Major | namenode | Harsh J | Gautam Gopalakrishnan |
+| [HDFS-8002](https://issues.apache.org/jira/browse/HDFS-8002) | Website refers to /trash directory |  Major | documentation | Mike Drob | Brahma Reddy Battula |
+| [HDFS-7261](https://issues.apache.org/jira/browse/HDFS-7261) | storageMap is accessed without synchronization in DatanodeDescriptor#updateHeartbeatState() |  Major | . | Ted Yu | Brahma Reddy Battula |
+| [HDFS-7997](https://issues.apache.org/jira/browse/HDFS-7997) | The first non-existing xattr should also throw IOException |  Minor | . | zhouyingchao | zhouyingchao |
+| [HDFS-6945](https://issues.apache.org/jira/browse/HDFS-6945) | BlockManager should remove a block from excessReplicateMap and decrement ExcessBlocks metric when the block is removed |  Critical | namenode | Akira Ajisaka | Akira Ajisaka |
+| [YARN-3425](https://issues.apache.org/jira/browse/YARN-3425) | NPE from RMNodeLabelsManager.serviceStop when NodeLabelsManager.serviceInit failed |  Minor | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-7922](https://issues.apache.org/jira/browse/HDFS-7922) | ShortCircuitCache#close is not releasing ScheduledThreadPoolExecutors |  Major | . | Rakesh R | Rakesh R |
+| [HDFS-8026](https://issues.apache.org/jira/browse/HDFS-8026) | Trace FSOutputSummer#writeChecksumChunks rather than DFSOutputStream#writeChunk |  Minor | . | Colin P. McCabe | Colin P. McCabe |
+| [YARN-3415](https://issues.apache.org/jira/browse/YARN-3415) | Non-AM containers can be counted towards amResourceUsage of a Fair Scheduler queue |  Critical | fairscheduler | Rohit Agarwal | zhihai xu |
+| [HADOOP-11797](https://issues.apache.org/jira/browse/HADOOP-11797) | releasedocmaker.py needs to put ASF headers on output |  Major | build | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-11800](https://issues.apache.org/jira/browse/HADOOP-11800) | Clean up some test methods in TestCodec.java |  Major | test | Akira Ajisaka | Brahma Reddy Battula |
+| [MAPREDUCE-4844](https://issues.apache.org/jira/browse/MAPREDUCE-4844) | Counters / AbstractCounters have constant references not declared final |  Major | . | Gera Shegalov | Brahma Reddy Battula |
+| [YARN-3435](https://issues.apache.org/jira/browse/YARN-3435) | AM container to be allocated Appattempt AM container shown as null |  Trivial | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-3429](https://issues.apache.org/jira/browse/YARN-3429) | TestAMRMTokens.testTokenExpiry fails Intermittently with error message:Invalid AMRMToken |  Major | test | zhihai xu | zhihai xu |
+| [HDFS-5215](https://issues.apache.org/jira/browse/HDFS-5215) | dfs.datanode.du.reserved is not considered while computing available space |  Major | datanode | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-3457](https://issues.apache.org/jira/browse/YARN-3457) | NPE when NodeManager.serviceInit fails and stopRecoveryStore called |  Minor | nodemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-3459](https://issues.apache.org/jira/browse/YARN-3459) | Fix failiure of TestLog4jWarningErrorMetricsAppender |  Blocker | . | Li Lu | Varun Vasudev |
+| [HDFS-8046](https://issues.apache.org/jira/browse/HDFS-8046) | Allow better control of getContentSummary |  Major | . | Kihwal Lee | Kihwal Lee |
+| [YARN-2890](https://issues.apache.org/jira/browse/YARN-2890) | MiniYarnCluster should turn on timeline service if configured to do so |  Major | . | Mit Desai | Mit Desai |
+| [HDFS-7725](https://issues.apache.org/jira/browse/HDFS-7725) | Incorrect "nodes in service" metrics caused all writes to fail |  Major | . | Ming Ma | Ming Ma |
+| [HDFS-8096](https://issues.apache.org/jira/browse/HDFS-8096) | DatanodeMetrics#blocksReplicated will get incremented early and even for failed transfers |  Major | datanode | Vinayakumar B | Vinayakumar B |
+| [YARN-3465](https://issues.apache.org/jira/browse/YARN-3465) | Use LinkedHashMap to preserve order of resource requests |  Major | nodemanager | zhihai xu | zhihai xu |
+| [HDFS-8099](https://issues.apache.org/jira/browse/HDFS-8099) | Change "DFSInputStream has been closed already" message to debug log level |  Minor | hdfs-client | Charles Lamb | Charles Lamb |
+| [HDFS-8091](https://issues.apache.org/jira/browse/HDFS-8091) | ACLStatus and XAttributes not properly presented to INodeAttributesProvider before returning to client |  Major | namenode | Arun Suresh | Arun Suresh |
+| [MAPREDUCE-6266](https://issues.apache.org/jira/browse/MAPREDUCE-6266) | Job#getTrackingURL should consistently return a proper URL |  Minor | . | Ray Chiang | Ray Chiang |
+| [HDFS-8081](https://issues.apache.org/jira/browse/HDFS-8081) | Split getAdditionalBlock() into two methods. |  Major | . | Konstantin Shvachko | Konstantin Shvachko |
+| [HDFS-7939](https://issues.apache.org/jira/browse/HDFS-7939) | Two fsimage\_rollback\_\* files are created which are not deleted after rollback. |  Critical | . | J.Andreina | J.Andreina |
+| [MAPREDUCE-6314](https://issues.apache.org/jira/browse/MAPREDUCE-6314) | TestPipeApplication fails on trunk |  Major | test | Varun Vasudev | Varun Vasudev |
+| [YARN-3466](https://issues.apache.org/jira/browse/YARN-3466) | Fix RM nodes web page to sort by node HTTP-address, #containers and node-label column |  Major | resourcemanager, webapp | Jason Lowe | Jason Lowe |
+| [HDFS-7931](https://issues.apache.org/jira/browse/HDFS-7931) | DistributedFIleSystem should not look for keyProvider in cache if Encryption is disabled |  Minor | hdfs-client | Arun Suresh | Arun Suresh |
+| [HDFS-8111](https://issues.apache.org/jira/browse/HDFS-8111) | NPE thrown when invalid FSImage filename given for "hdfs oiv\_legacy" cmd |  Minor | tools | Archana T | Surendra Singh Lilhore |
+| [HADOOP-11811](https://issues.apache.org/jira/browse/HADOOP-11811) | Fix typos in hadoop-project/pom.xml and TestAccessControlList |  Minor | . | Chen He | Brahma Reddy Battula |
+| [YARN-3382](https://issues.apache.org/jira/browse/YARN-3382) | Some of UserMetricsInfo metrics are incorrectly set to root queue metrics |  Major | webapp | Rohit Agarwal | Rohit Agarwal |
+| [YARN-3472](https://issues.apache.org/jira/browse/YARN-3472) | Possible leak in DelegationTokenRenewer#allTokens |  Major | . | Jian He | Rohith Sharma K S |
+| [YARN-3394](https://issues.apache.org/jira/browse/YARN-3394) | WebApplication  proxy documentation is incomplete |  Minor | resourcemanager | Bibin A Chundatt | Naganarasimha G R |
+| [HADOOP-11819](https://issues.apache.org/jira/browse/HADOOP-11819) | HttpServerFunctionalTest#prepareTestWebapp should create web app directory if it does not exist. |  Minor | . | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-6666](https://issues.apache.org/jira/browse/HDFS-6666) | Abort NameNode and DataNode startup if security is enabled but block access token is not enabled. |  Minor | datanode, namenode, security | Chris Nauroth | Vijay Bhat |
+| [HDFS-8055](https://issues.apache.org/jira/browse/HDFS-8055) | NullPointerException when topology script is missing. |  Major | namenode | Anu Engineer | Anu Engineer |
+| [YARN-3266](https://issues.apache.org/jira/browse/YARN-3266) | RMContext inactiveNodes should have NodeId as map key |  Major | resourcemanager | Chengbing Liu | Chengbing Liu |
+| [YARN-3436](https://issues.apache.org/jira/browse/YARN-3436) | Fix URIs in documention of YARN web service REST APIs |  Minor | documentation, resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-8127](https://issues.apache.org/jira/browse/HDFS-8127) | NameNode Failover during HA upgrade can cause DataNode to finalize upgrade |  Blocker | ha | Jing Zhao | Jing Zhao |
+| [YARN-3462](https://issues.apache.org/jira/browse/YARN-3462) | Patches applied for YARN-2424 are inconsistent between trunk and branch-2 |  Major | . | Sidharta Seethana | Naganarasimha G R |
+| [HDFS-8151](https://issues.apache.org/jira/browse/HDFS-8151) | Always use snapshot path as source when invalid snapshot names are used for diff based distcp |  Minor | distcp | Sushmitha Sreenivasan | Jing Zhao |
+| [HDFS-7934](https://issues.apache.org/jira/browse/HDFS-7934) | Update RollingUpgrade rollback documentation: should use bootstrapstandby for standby NN |  Critical | documentation | J.Andreina | J.Andreina |
+| [HDFS-8149](https://issues.apache.org/jira/browse/HDFS-8149) | The footer of the Web UI "Hadoop, 2014" is old |  Major | . | Akira Ajisaka | Brahma Reddy Battula |
+| [HDFS-8142](https://issues.apache.org/jira/browse/HDFS-8142) | DistributedFileSystem encryption zone commands should resolve relative paths |  Major | . | Rakesh R | Rakesh R |
+| [MAPREDUCE-6300](https://issues.apache.org/jira/browse/MAPREDUCE-6300) | Task list sort by task id broken |  Minor | . | Siqi Li | Siqi Li |
+| [YARN-3021](https://issues.apache.org/jira/browse/YARN-3021) | YARN's delegation-token handling disallows certain trust setups to operate properly over DistCp |  Major | security | Harsh J | Yongjun Zhang |
+| [HDFS-8153](https://issues.apache.org/jira/browse/HDFS-8153) | Error Message points to wrong parent directory in case of path component name length error |  Major | namenode | Anu Engineer | Anu Engineer |
+| [YARN-3493](https://issues.apache.org/jira/browse/YARN-3493) | RM fails to come up with error "Failed to load/recover state" when  mem settings are changed |  Critical | yarn | Sumana Sathish | Jian He |
+| [HDFS-8043](https://issues.apache.org/jira/browse/HDFS-8043) | NPE in MiniDFSCluster teardown |  Major | test | Steve Loughran | Brahma Reddy Battula |
+| [HDFS-8173](https://issues.apache.org/jira/browse/HDFS-8173) | NPE thrown at DataNode shutdown when HTTP server was not able to create |  Minor | datanode | Archana T | Surendra Singh Lilhore |
+| [YARN-3497](https://issues.apache.org/jira/browse/YARN-3497) | ContainerManagementProtocolProxy modifies IPC timeout conf without making a copy |  Major | client | Jason Lowe | Jason Lowe |
+| [MAPREDUCE-6238](https://issues.apache.org/jira/browse/MAPREDUCE-6238) | MR2 can't run local jobs with -libjars command options which is a regression from MR1 |  Critical | mrv2 | zhihai xu | zhihai xu |
+| [HDFS-8179](https://issues.apache.org/jira/browse/HDFS-8179) | DFSClient#getServerDefaults returns null within 1 hour of system start |  Blocker | . | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-7993](https://issues.apache.org/jira/browse/HDFS-7993) | Provide each Replica details in fsck |  Major | . | Ming Ma | J.Andreina |
+| [HDFS-8163](https://issues.apache.org/jira/browse/HDFS-8163) | Using monotonicNow for block report scheduling causes test failures on recently restarted systems |  Blocker | datanode | Arpit Agarwal | Arpit Agarwal |
+| [HADOOP-11704](https://issues.apache.org/jira/browse/HADOOP-11704) | DelegationTokenAuthenticationFilter must pass ipaddress instead of hostname to ProxyUsers#authorize() |  Major | . | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-3495](https://issues.apache.org/jira/browse/YARN-3495) | Confusing log generated by FairScheduler |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [MAPREDUCE-6293](https://issues.apache.org/jira/browse/MAPREDUCE-6293) | Set job classloader on uber-job's LocalContainerLauncher event thread |  Major | mr-am | Sangjin Lee | Sangjin Lee |
+| [HADOOP-11846](https://issues.apache.org/jira/browse/HADOOP-11846) | TestCertificateUtil.testCorruptPEM failing on Jenkins JDK8 |  Major | build, security | Steve Loughran | Larry McCay |
+| [HADOOP-11859](https://issues.apache.org/jira/browse/HADOOP-11859) | PseudoAuthenticationHandler fails with httpcomponents v4.4 |  Major | . | Eugene Koifman | Eugene Koifman |
+| [MAPREDUCE-6330](https://issues.apache.org/jira/browse/MAPREDUCE-6330) | Fix typo in Task Attempt API's URL in documentations |  Minor | documentation | Ryu Kobayashi | Ryu Kobayashi |
+| [HADOOP-11848](https://issues.apache.org/jira/browse/HADOOP-11848) | Incorrect arguments to sizeof in DomainSocket.c |  Major | native | Malcolm Kavalsky | Malcolm Kavalsky |
+| [HADOOP-11868](https://issues.apache.org/jira/browse/HADOOP-11868) | Invalid user logins trigger large backtraces in server log |  Major | . | Chang Li | Chang Li |
+| [HADOOP-11861](https://issues.apache.org/jira/browse/HADOOP-11861) | test-patch.sh rewrite addendum patch |  Major | build | Anu Engineer | Allen Wittenauer |
+| [HADOOP-11864](https://issues.apache.org/jira/browse/HADOOP-11864) | JWTRedirectAuthenticationHandler breaks java8 javadocs |  Major | build | Steve Loughran | Larry McCay |
+| [HDFS-4448](https://issues.apache.org/jira/browse/HDFS-4448) | Allow HA NN to start in secure mode with wildcard address configured |  Major | ha, namenode, security | Aaron T. Myers | Aaron T. Myers |
+| [YARN-3522](https://issues.apache.org/jira/browse/YARN-3522) | DistributedShell uses the wrong user to put timeline data |  Blocker | timelineserver | Zhijie Shen | Zhijie Shen |
+| [HDFS-8147](https://issues.apache.org/jira/browse/HDFS-8147) | Mover should not schedule two replicas to the same DN storage |  Major | balancer & mover | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HADOOP-11872](https://issues.apache.org/jira/browse/HADOOP-11872) | "hadoop dfs" command prints message about using "yarn jar" on Windows(branch-2 only) |  Minor | scripts | Varun Vasudev | Varun Vasudev |
+| [HADOOP-11730](https://issues.apache.org/jira/browse/HADOOP-11730) | Regression: s3n read failure recovery broken |  Major | fs/s3 | Takenori Sato | Takenori Sato |
+| [YARN-3516](https://issues.apache.org/jira/browse/YARN-3516) | killing ContainerLocalizer action doesn't take effect when private localizer receives FETCH\_FAILURE status. |  Minor | nodemanager | zhihai xu | zhihai xu |
+| [HADOOP-11802](https://issues.apache.org/jira/browse/HADOOP-11802) | DomainSocketWatcher thread terminates sometimes after there is an I/O error during requestShortCircuitShm |  Major | . | Eric Payne | Colin P. McCabe |
+| [HDFS-8070](https://issues.apache.org/jira/browse/HDFS-8070) | Pre-HDFS-7915 DFSClient cannot use short circuit on post-HDFS-7915 DataNode |  Blocker | caching | Gopal V | Colin P. McCabe |
+| [HDFS-8217](https://issues.apache.org/jira/browse/HDFS-8217) | During block recovery for truncate Log new Block Id in case of copy-on-truncate is true. |  Major | datanode | Vinayakumar B | Vinayakumar B |
+| [HDFS-8231](https://issues.apache.org/jira/browse/HDFS-8231) | StackTrace displayed at client while QuotaByStorageType exceeds |  Major | hdfs-client | J.Andreina | J.Andreina |
+| [HDFS-8191](https://issues.apache.org/jira/browse/HDFS-8191) | Fix byte to integer casting in SimulatedFSDataset#simulatedByte |  Minor | . | Zhe Zhang | Zhe Zhang |
+| [YARN-3387](https://issues.apache.org/jira/browse/YARN-3387) | Previous AM's container complete message couldn't pass to current am if am restarted and rm changed |  Critical | resourcemanager | sandflee | sandflee |
+| [HADOOP-11876](https://issues.apache.org/jira/browse/HADOOP-11876) | Refactor code to make it more readable, minor maybePrintStats bug |  Trivial | tools/distcp | Zoran Dimitrijevic | Zoran Dimitrijevic |
+| [YARN-3444](https://issues.apache.org/jira/browse/YARN-3444) | Fix typo capabililty |  Trivial | applications/distributed-shell | Gabor Liptak | Gabor Liptak |
+| [YARN-3537](https://issues.apache.org/jira/browse/YARN-3537) | NPE when NodeManager.serviceInit fails and stopRecoveryStore invoked |  Major | nodemanager | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-8211](https://issues.apache.org/jira/browse/HDFS-8211) | DataNode UUID is always null in the JMX counter |  Major | datanode | Anu Engineer | Anu Engineer |
+| [MAPREDUCE-6333](https://issues.apache.org/jira/browse/MAPREDUCE-6333) | TestEvents,TestAMWebServicesTasks,TestAppController are broken due to MAPREDUCE-6297 |  Major | . | Siqi Li | Siqi Li |
+| [HDFS-8206](https://issues.apache.org/jira/browse/HDFS-8206) | Fix the typos in hadoop-hdfs-httpfs |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-3464](https://issues.apache.org/jira/browse/YARN-3464) | Race condition in LocalizerRunner kills localizer before localizing all resources |  Critical | nodemanager | zhihai xu | zhihai xu |
+| [MAPREDUCE-6252](https://issues.apache.org/jira/browse/MAPREDUCE-6252) | JobHistoryServer should not fail when encountering a missing directory |  Major | jobhistoryserver | Craig Welch | Craig Welch |
+| [YARN-3530](https://issues.apache.org/jira/browse/YARN-3530) | ATS throws exception on trying to filter results without otherinfo. |  Critical | timelineserver | Sreenath Somarajapuram | Zhijie Shen |
+| [HDFS-8205](https://issues.apache.org/jira/browse/HDFS-8205) | CommandFormat#parse() should not parse option as value of option |  Blocker | . | Peter Shi | Peter Shi |
+| [HADOOP-11870](https://issues.apache.org/jira/browse/HADOOP-11870) | [JDK8] AuthenticationFilter, CertificateUtil, SignerSecretProviders, KeyAuthorizationKeyProvider Javadoc issues |  Major | build | Robert Kanter | Robert Kanter |
+| [MAPREDUCE-6324](https://issues.apache.org/jira/browse/MAPREDUCE-6324) | Uber jobs fail to update AMRM token when it rolls over |  Blocker | mr-am | Jason Lowe | Jason Lowe |
+| [HDFS-8232](https://issues.apache.org/jira/browse/HDFS-8232) | Missing datanode counters when using Metrics2 sink interface |  Major | datanode | Anu Engineer | Anu Engineer |
+| [MAPREDUCE-6334](https://issues.apache.org/jira/browse/MAPREDUCE-6334) | Fetcher#copyMapOutput is leaking usedMemory upon IOException during InMemoryMapOutput shuffle handler |  Blocker | . | Eric Payne | Eric Payne |
+| [HDFS-8273](https://issues.apache.org/jira/browse/HDFS-8273) | FSNamesystem#Delete() should not call logSync() when holding the lock |  Blocker | namenode | Jing Zhao | Haohui Mai |
+| [YARN-3485](https://issues.apache.org/jira/browse/YARN-3485) | FairScheduler headroom calculation doesn't consider maxResources for Fifo and FairShare policies |  Critical | fairscheduler | Karthik Kambatla | Karthik Kambatla |
+| [HDFS-8269](https://issues.apache.org/jira/browse/HDFS-8269) | getBlockLocations() does not resolve the .reserved path and generates incorrect edit logs when updating the atime |  Blocker | . | Yesha Vora | Haohui Mai |
+| [YARN-3517](https://issues.apache.org/jira/browse/YARN-3517) | RM web ui for dumping scheduler logs should be for admins only |  Blocker | resourcemanager, security | Varun Vasudev | Varun Vasudev |
+| [HDFS-8214](https://issues.apache.org/jira/browse/HDFS-8214) | Secondary NN Web UI shows wrong date for Last Checkpoint |  Major | namenode | Charles Lamb | Charles Lamb |
+| [YARN-3533](https://issues.apache.org/jira/browse/YARN-3533) | Test: Fix launchAM in MockRM to wait for attempt to be scheduled |  Major | yarn | Anubhav Dhoot | Anubhav Dhoot |
+| [MAPREDUCE-6339](https://issues.apache.org/jira/browse/MAPREDUCE-6339) | Job history file is not flushed correctly because isTimerActive flag is not set true when flushTimerTask is scheduled. |  Critical | mrv2 | zhihai xu | zhihai xu |
+| [HADOOP-11821](https://issues.apache.org/jira/browse/HADOOP-11821) | Fix findbugs warnings in hadoop-sls |  Major | tools | Akira Ajisaka | Brahma Reddy Battula |
+| [YARN-3564](https://issues.apache.org/jira/browse/YARN-3564) | Fix TestContainerAllocation.testAMContainerAllocationWhenDNSUnavailable fails randomly |  Major | . | Jian He | Jian He |
+| [HADOOP-11891](https://issues.apache.org/jira/browse/HADOOP-11891) | OsSecureRandom should lazily fill its reservoir |  Major | security | Arun Suresh | Arun Suresh |
+| [HADOOP-11866](https://issues.apache.org/jira/browse/HADOOP-11866) | increase readability and reliability of checkstyle, shellcheck, and whitespace reports |  Minor | . | Naganarasimha G R | Allen Wittenauer |
+| [HDFS-8292](https://issues.apache.org/jira/browse/HDFS-8292) | Move conditional in fmt\_time from dfs-dust.js to status.html |  Minor | namenode | Charles Lamb | Charles Lamb |
+| [HDFS-8300](https://issues.apache.org/jira/browse/HDFS-8300) | Fix unit test failures and findbugs warning caused by HDFS-8283 |  Major | . | Jing Zhao | Jing Zhao |
+| [HDFS-8276](https://issues.apache.org/jira/browse/HDFS-8276) | LazyPersistFileScrubber should be disabled if scrubber interval configured zero |  Major | namenode | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HADOOP-11889](https://issues.apache.org/jira/browse/HADOOP-11889) | Make checkstyle runnable from root project |  Major | build, test | Gera Shegalov | Gera Shegalov |
+| [HDFS-8213](https://issues.apache.org/jira/browse/HDFS-8213) | DFSClient should use hdfs.client.htrace HTrace configuration prefix rather than hadoop.htrace |  Critical | . | Billie Rinaldi | Colin P. McCabe |
+| [HDFS-8229](https://issues.apache.org/jira/browse/HDFS-8229) | LAZY\_PERSIST file gets deleted after NameNode restart. |  Major | namenode | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [YARN-2893](https://issues.apache.org/jira/browse/YARN-2893) | AMLaucher: sporadic job failures due to EOFException in readTokenStorageStream |  Major | resourcemanager | Gera Shegalov | zhihai xu |
+| [HADOOP-11491](https://issues.apache.org/jira/browse/HADOOP-11491) | HarFs incorrectly declared as requiring an authority |  Critical | fs | Gera Shegalov | Brahma Reddy Battula |
+| [HADOOP-11900](https://issues.apache.org/jira/browse/HADOOP-11900) | Add failIfNoTests=false to hadoop-build-tools pom |  Major | test | Gera Shegalov | Gera Shegalov |
+| [MAPREDUCE-6345](https://issues.apache.org/jira/browse/MAPREDUCE-6345) | Documentation fix for when CRLA is enabled for MRAppMaster logs |  Trivial | documentation | Rohit Agarwal | Rohit Agarwal |
+| [YARN-2454](https://issues.apache.org/jira/browse/YARN-2454) | Fix compareTo of variable UNBOUNDED in o.a.h.y.util.resource.Resources. |  Major | . | Xu Yang | Xu Yang |
+| [YARN-1993](https://issues.apache.org/jira/browse/YARN-1993) | Cross-site scripting vulnerability in TextView.java |  Major | webapp | Ted Yu | Kenji Kikushima |
+| [MAPREDUCE-5905](https://issues.apache.org/jira/browse/MAPREDUCE-5905) | CountersStrings.toEscapedCompactStrings outputs unnecessary "null" strings |  Minor | . | Akira Ajisaka | Akira Ajisaka |
+| [MAPREDUCE-6349](https://issues.apache.org/jira/browse/MAPREDUCE-6349) | Fix typo in property org.apache.hadoop.mapreduce.lib.chain.Chain.REDUCER\_INPUT\_VALUE\_CLASS |  Minor | . | Ray Chiang | Ray Chiang |
+| [HADOOP-9658](https://issues.apache.org/jira/browse/HADOOP-9658) | SnappyCodec#checkNativeCodeLoaded may unexpectedly fail when native code is not loaded |  Major | . | Zhijie Shen | Zhijie Shen |
+| [YARN-3097](https://issues.apache.org/jira/browse/YARN-3097) | Logging of resource recovery on NM restart has redundancies |  Minor | nodemanager | Jason Lowe | Eric Payne |
+| [HDFS-8290](https://issues.apache.org/jira/browse/HDFS-8290) | WebHDFS calls before namesystem initialization can cause NullPointerException. |  Minor | webhdfs | Chris Nauroth | Chris Nauroth |
+| [MAPREDUCE-5649](https://issues.apache.org/jira/browse/MAPREDUCE-5649) | Reduce cannot use more than 2G memory  for the final merge |  Major | mrv2 | stanley shi | Gera Shegalov |
+| [MAPREDUCE-6259](https://issues.apache.org/jira/browse/MAPREDUCE-6259) | IllegalArgumentException due to missing job submit time |  Major | jobhistoryserver | zhihai xu | zhihai xu |
+| [YARN-3375](https://issues.apache.org/jira/browse/YARN-3375) | NodeHealthScriptRunner.shouldRun() check is performing 3 times for starting NodeHealthScriptRunner |  Minor | nodemanager | Devaraj K | Devaraj K |
+| [YARN-2725](https://issues.apache.org/jira/browse/YARN-2725) | Adding test cases of retrying requests about ZKRMStateStore |  Major | . | Tsuyoshi Ozawa | Tsuyoshi Ozawa |
+| [MAPREDUCE-6165](https://issues.apache.org/jira/browse/MAPREDUCE-6165) | [JDK8] TestCombineFileInputFormat failed on JDK8 |  Minor | . | Wei Yan | Akira Ajisaka |
+| [HADOOP-11328](https://issues.apache.org/jira/browse/HADOOP-11328) | ZKFailoverController does not log Exception when doRun raises errors |  Major | ha | Tianyin Xu | Tianyin Xu |
+| [HADOOP-11916](https://issues.apache.org/jira/browse/HADOOP-11916) | TestStringUtils#testLowerAndUpperStrings failed on MAC due to a JVM bug |  Minor | . | Ming Ma | Ming Ma |
+| [YARN-3552](https://issues.apache.org/jira/browse/YARN-3552) | RM Web UI shows -1 running containers for completed apps |  Trivial | webapp | Rohith Sharma K S | Rohith Sharma K S |
+| [HADOOP-11120](https://issues.apache.org/jira/browse/HADOOP-11120) | hadoop fs -rmr gives wrong advice |  Major | . | Allen Wittenauer | Juliet Hougland |
+| [YARN-3396](https://issues.apache.org/jira/browse/YARN-3396) | Handle URISyntaxException in ResourceLocalizationService |  Major | nodemanager | Chengbing Liu | Brahma Reddy Battula |
+| [YARN-2123](https://issues.apache.org/jira/browse/YARN-2123) | Progress bars in Web UI always at 100% due to non-US locale |  Major | webapp | Johannes Simon | Akira Ajisaka |
+| [HDFS-8305](https://issues.apache.org/jira/browse/HDFS-8305) | HDFS INotify: the destination field of RenameOp should always end with the file name |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HADOOP-11917](https://issues.apache.org/jira/browse/HADOOP-11917) | test-patch.sh should work with ${BASEDIR}/patchprocess setups |  Blocker | . | Allen Wittenauer | Allen Wittenauer |
+| [HDFS-7847](https://issues.apache.org/jira/browse/HDFS-7847) | Modify NNThroughputBenchmark to be able to operate on a remote NameNode |  Major | . | Colin P. McCabe | Charles Lamb |
+| [HDFS-8219](https://issues.apache.org/jira/browse/HDFS-8219) | setStoragePolicy with folder behavior is different after cluster restart |  Major | . | Peter Shi | Surendra Singh Lilhore |
+| [HADOOP-11898](https://issues.apache.org/jira/browse/HADOOP-11898) | add nfs3 and portmap starting command in hadoop-daemon.sh in branch-2 |  Minor | bin, nfs | Brandon Li | Brandon Li |
+| [HADOOP-11926](https://issues.apache.org/jira/browse/HADOOP-11926) | test-patch.sh mv does wrong math |  Major | . | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-11912](https://issues.apache.org/jira/browse/HADOOP-11912) | Extra configuration key used in TraceUtils should respect prefix |  Minor | . | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-3582](https://issues.apache.org/jira/browse/YARN-3582) | NPE in WebAppProxyServlet |  Major | . | Jian He | Jian He |
+| [HDFS-2484](https://issues.apache.org/jira/browse/HDFS-2484) | checkLease should throw FileNotFoundException when file does not exist |  Major | namenode | Konstantin Shvachko | Rakesh R |
+| [YARN-3385](https://issues.apache.org/jira/browse/YARN-3385) | Race condition: KeeperException$NoNodeException will cause RM shutdown during ZK node deletion. |  Critical | resourcemanager | zhihai xu | zhihai xu |
+| [HDFS-7833](https://issues.apache.org/jira/browse/HDFS-7833) | DataNode reconfiguration does not recalculate valid volumes required, based on configured failed volumes tolerated. |  Major | datanode | Chris Nauroth | Lei (Eddy) Xu |
+| [YARN-3577](https://issues.apache.org/jira/browse/YARN-3577) | Misspelling of threshold in log4j.properties for tests |  Minor | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-8325](https://issues.apache.org/jira/browse/HDFS-8325) | Misspelling of threshold in log4j.properties for tests |  Minor | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-10387](https://issues.apache.org/jira/browse/HADOOP-10387) | Misspelling of threshold in log4j.properties for tests in hadoop-common-project |  Minor | conf, test | Kenji Kikushima | Brahma Reddy Battula |
+| [MAPREDUCE-6356](https://issues.apache.org/jira/browse/MAPREDUCE-6356) | Misspelling of threshold in log4j.properties for tests |  Minor | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-3523](https://issues.apache.org/jira/browse/YARN-3523) | Cleanup ResourceManagerAdministrationProtocol interface audience |  Major | client, resourcemanager | Wangda Tan | Naganarasimha G R |
+| [HDFS-7980](https://issues.apache.org/jira/browse/HDFS-7980) | Incremental BlockReport will dramatically slow down the startup of  a namenode |  Major | . | Hui Zheng | Walter Su |
+| [HADOOP-11936](https://issues.apache.org/jira/browse/HADOOP-11936) | Dockerfile references a removed image |  Major | . | Allen Wittenauer | Allen Wittenauer |
+| [YARN-3584](https://issues.apache.org/jira/browse/YARN-3584) | [Log mesage correction] : MIssing space in Diagnostics message |  Trivial | . | nijel | nijel |
+| [HDFS-8321](https://issues.apache.org/jira/browse/HDFS-8321) | CacheDirectives and CachePool operations should throw RetriableException in safemode |  Major | . | Haohui Mai | Haohui Mai |
+| [HDFS-8037](https://issues.apache.org/jira/browse/HDFS-8037) | CheckAccess in WebHDFS silently accepts malformed FsActions parameters |  Minor | webhdfs | Jake Low | Walter Su |
+| [YARN-1832](https://issues.apache.org/jira/browse/YARN-1832) | Fix wrong MockLocalizerStatus#equals implementation |  Minor | nodemanager | Hong Zhiguo | Hong Zhiguo |
+| [YARN-3572](https://issues.apache.org/jira/browse/YARN-3572) | Correct typos in WritingYarnApplications.md |  Minor | documentation | Sandeep Khurana | Gabor Liptak |
+| [HADOOP-11922](https://issues.apache.org/jira/browse/HADOOP-11922) | Misspelling of threshold in log4j.properties for tests in hadoop-tools |  Minor | . | Brahma Reddy Battula | Gabor Liptak |
+| [HDFS-8257](https://issues.apache.org/jira/browse/HDFS-8257) | Namenode rollingUpgrade option is incorrect in document |  Major | documentation | J.Andreina | J.Andreina |
+| [HDFS-8067](https://issues.apache.org/jira/browse/HDFS-8067) | haadmin prints out stale help messages |  Minor | hdfs-client | Ajith S | Ajith S |
+| [YARN-3592](https://issues.apache.org/jira/browse/YARN-3592) | Fix typos in RMNodeLabelsManager |  Trivial | resourcemanager | Junping Du | Sunil G |
+| [HDFS-8174](https://issues.apache.org/jira/browse/HDFS-8174) | Update replication count to live rep count in fsck report |  Minor | . | J.Andreina | J.Andreina |
+| [HDFS-6291](https://issues.apache.org/jira/browse/HDFS-6291) | FSImage may be left unclosed in BootstrapStandby#doRun() |  Minor | ha | Ted Yu | Sanghyun Yun |
+| [YARN-3358](https://issues.apache.org/jira/browse/YARN-3358) | Audit log not present while refreshing Service ACLs |  Minor | resourcemanager | Varun Saxena | Varun Saxena |
+| [YARN-3589](https://issues.apache.org/jira/browse/YARN-3589) | RM and AH web UI display DOCTYPE wrongly |  Major | webapp | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-7998](https://issues.apache.org/jira/browse/HDFS-7998) | HDFS Federation : Command mentioned to add a NN to existing federated cluster is wrong |  Minor | documentation | Ajith S | Ajith S |
+| [HDFS-8222](https://issues.apache.org/jira/browse/HDFS-8222) | Remove usage of "dfsadmin -upgradeProgress " from document which  is no longer supported |  Major | documentation | J.Andreina | J.Andreina |
+| [HDFS-8187](https://issues.apache.org/jira/browse/HDFS-8187) | Remove usage of "-setStoragePolicy" and "-getStoragePolicy" using dfsadmin cmd (as it is not been supported) |  Major | documentation | J.Andreina | J.Andreina |
+| [HDFS-8175](https://issues.apache.org/jira/browse/HDFS-8175) | Provide information on snapshotDiff for supporting the comparison between snapshot and current status |  Major | documentation | J.Andreina | J.Andreina |
+| [MAPREDUCE-6342](https://issues.apache.org/jira/browse/MAPREDUCE-6342) | Make POM project names consistent |  Minor | build | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-6576](https://issues.apache.org/jira/browse/HDFS-6576) | Datanode log is generating at root directory in security mode |  Minor | datanode, scripts | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HADOOP-11877](https://issues.apache.org/jira/browse/HADOOP-11877) | SnappyDecompressor's Logger class name is wrong |  Major | conf | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HDFS-3384](https://issues.apache.org/jira/browse/HDFS-3384) | DataStreamer thread should be closed immediatly when failed to setup a PipelineForAppendOrRecovery |  Major | hdfs-client | Brahma Reddy Battula | Uma Maheswara Rao G |
+| [YARN-3554](https://issues.apache.org/jira/browse/YARN-3554) | Default value for maximum nodemanager connect wait time is too high |  Major | . | Jason Lowe | Naganarasimha G R |
+| [HDFS-7894](https://issues.apache.org/jira/browse/HDFS-7894) | Rolling upgrade readiness is not updated in jmx until query command is issued. |  Critical | . | Kihwal Lee | Brahma Reddy Battula |
+| [YARN-3600](https://issues.apache.org/jira/browse/YARN-3600) | AM container link is broken (on a killed application, at least) |  Major | . | Sergey Shelukhin | Naganarasimha G R |
+| [HDFS-8346](https://issues.apache.org/jira/browse/HDFS-8346) | libwebhdfs build fails during link due to unresolved external symbols. |  Major | native | Chris Nauroth | Chris Nauroth |
+| [HDFS-8274](https://issues.apache.org/jira/browse/HDFS-8274) | NFS configuration nfs.dump.dir not working |  Major | nfs | Ajith S | Ajith S |
+| [HDFS-8340](https://issues.apache.org/jira/browse/HDFS-8340) | Fix NFS documentation of nfs.wtmax |  Minor | documentation, nfs | Ajith S | Ajith S |
+| [HADOOP-10356](https://issues.apache.org/jira/browse/HADOOP-10356) | Corrections in winutils/chmod.c |  Trivial | bin | René Nyffenegger | René Nyffenegger |
+| [HADOOP-7165](https://issues.apache.org/jira/browse/HADOOP-7165) | listLocatedStatus(path, filter) is not redefined in FilterFs |  Major | fs | Hairong Kuang | Hairong Kuang |
+| [MAPREDUCE-3383](https://issues.apache.org/jira/browse/MAPREDUCE-3383) | Duplicate job.getOutputValueGroupingComparator() in ReduceTask |  Major | . | Binglin Chang | Binglin Chang |
+| [HDFS-8311](https://issues.apache.org/jira/browse/HDFS-8311) | DataStreamer.transfer() should timeout the socket InputStream. |  Major | hdfs-client | Esteban Gutierrez | Esteban Gutierrez |
+| [HDFS-8113](https://issues.apache.org/jira/browse/HDFS-8113) | Add check for null BlockCollection pointers in BlockInfoContiguous structures |  Major | namenode | Chengbing Liu | Chengbing Liu |
+| [HADOOP-9729](https://issues.apache.org/jira/browse/HADOOP-9729) | The example code of org.apache.hadoop.util.Tool is incorrect |  Major | util | hellojinjie | hellojinjie |
+| [MAPREDUCE-2094](https://issues.apache.org/jira/browse/MAPREDUCE-2094) | LineRecordReader should not seek into non-splittable, compressed streams. |  Major | task | Niels Basjes | Niels Basjes |
+| [HDFS-8245](https://issues.apache.org/jira/browse/HDFS-8245) | Standby namenode doesn't process DELETED\_BLOCK if the add block request is in edit log. |  Major | . | Rushabh S Shah | Rushabh S Shah |
+| [YARN-3018](https://issues.apache.org/jira/browse/YARN-3018) | Unify the default value for yarn.scheduler.capacity.node-locality-delay in code and default xml file |  Trivial | capacityscheduler | nijel | nijel |
+| [HDFS-8326](https://issues.apache.org/jira/browse/HDFS-8326) | Documentation about when checkpoints are run is out of date |  Major | documentation | Misty Stanley-Jones | Misty Stanley-Jones |
+| [YARN-3604](https://issues.apache.org/jira/browse/YARN-3604) | removeApplication in ZKRMStateStore should also disable watch. |  Minor | resourcemanager | zhihai xu | zhihai xu |
+| [YARN-3476](https://issues.apache.org/jira/browse/YARN-3476) | Nodemanager can fail to delete local logs if log aggregation fails |  Major | log-aggregation, nodemanager | Jason Lowe | Rohith Sharma K S |
+| [YARN-3473](https://issues.apache.org/jira/browse/YARN-3473) | Fix RM Web UI configuration for some properties |  Minor | resourcemanager | Ray Chiang | Ray Chiang |
+| [HDFS-8097](https://issues.apache.org/jira/browse/HDFS-8097) | TestFileTruncate is failing intermittently |  Major | test | Rakesh R | Rakesh R |
+| [YARN-1912](https://issues.apache.org/jira/browse/YARN-1912) | ResourceLocalizer started without any jvm memory control |  Major | nodemanager | stanley shi | Masatake Iwasaki |
+| [MAPREDUCE-6359](https://issues.apache.org/jira/browse/MAPREDUCE-6359) | RM HA setup, "Cluster" tab links populated with AM hostname instead of RM |  Minor | . | Aroop Maliakkal | yunjiong zhao |
+| [MAPREDUCE-6353](https://issues.apache.org/jira/browse/MAPREDUCE-6353) | Divide by zero error in MR AM when calculating available containers |  Major | mr-am | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-3395](https://issues.apache.org/jira/browse/YARN-3395) | FairScheduler: Trim whitespaces when using username for queuename |  Major | fairscheduler | zhihai xu | zhihai xu |
+| [HDFS-8351](https://issues.apache.org/jira/browse/HDFS-8351) | Remove namenode -finalize option from document |  Major | documentation | Akira Ajisaka | Akira Ajisaka |
+| [YARN-3587](https://issues.apache.org/jira/browse/YARN-3587) | Fix the javadoc of DelegationTokenSecretManager in projects of yarn, etc. |  Minor | documentation | Akira Ajisaka | Gabor Liptak |
+| [HADOOP-11663](https://issues.apache.org/jira/browse/HADOOP-11663) | Remove description about Java 6 from docs |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-11928](https://issues.apache.org/jira/browse/HADOOP-11928) | Test-patch check for @author tags incorrectly flags removal of @author tags |  Major | . | Sean Busbey | Kengo Seki |
+| [HADOOP-11951](https://issues.apache.org/jira/browse/HADOOP-11951) | test-patch should give better info about failures to handle dev-support updates without resetrepo option |  Minor | . | Sean Busbey | Sean Busbey |
+| [HADOOP-11947](https://issues.apache.org/jira/browse/HADOOP-11947) | test-patch should return early from determine-issue  when run in jenkins mode. |  Minor | . | Sean Busbey | Sean Busbey |
+| [HDFS-7916](https://issues.apache.org/jira/browse/HDFS-7916) | 'reportBadBlocks' from datanodes to standby Node BPServiceActor goes for infinite loop |  Critical | datanode | Vinayakumar B | Rushabh S Shah |
+| [YARN-3434](https://issues.apache.org/jira/browse/YARN-3434) | Interaction between reservations and userlimit can result in significant ULF violation |  Major | capacityscheduler | Thomas Graves | Thomas Graves |
+| [HDFS-8362](https://issues.apache.org/jira/browse/HDFS-8362) | Java Compilation Error in TestHdfsConfigFields.java |  Major | . | Mohammad Arshad | Mohammad Arshad |
+| [MAPREDUCE-6360](https://issues.apache.org/jira/browse/MAPREDUCE-6360) | TestMapreduceConfigFields is placed in wrong dir, introducing compile error |  Major | . | Vinayakumar B | Mohammad Arshad |
+| [MAPREDUCE-6361](https://issues.apache.org/jira/browse/MAPREDUCE-6361) | NPE issue in shuffle caused by concurrent issue between copySucceeded() in one thread and copyFailed() in another thread on the same host |  Critical | . | Junping Du | Junping Du |
+| [YARN-3629](https://issues.apache.org/jira/browse/YARN-3629) | NodeID is always printed as "null" in node manager initialization log. |  Major | . | nijel | nijel |
+| [MAPREDUCE-6251](https://issues.apache.org/jira/browse/MAPREDUCE-6251) | JobClient needs additional retries at a higher level to address not-immediately-consistent dfs corner cases |  Major | jobhistoryserver, mrv2 | Craig Welch | Craig Welch |
+| [MAPREDUCE-6366](https://issues.apache.org/jira/browse/MAPREDUCE-6366) | mapreduce.terasort.final.sync configuration in TeraSort  doesn't work |  Trivial | examples | Takuya Fukudome | Takuya Fukudome |
+| [HDFS-6300](https://issues.apache.org/jira/browse/HDFS-6300) | Prevent multiple balancers from running simultaneously |  Critical | balancer & mover | Rakesh R | Rakesh R |
+| [HDFS-8358](https://issues.apache.org/jira/browse/HDFS-8358) | TestTraceAdmin fails |  Major | . | Kihwal Lee | Masatake Iwasaki |
+| [HADOOP-11966](https://issues.apache.org/jira/browse/HADOOP-11966) | Variable cygwin is undefined in hadoop-config.sh when executed through hadoop-daemon.sh. |  Critical | scripts | Chris Nauroth | Chris Nauroth |
+| [HDFS-8380](https://issues.apache.org/jira/browse/HDFS-8380) | Always call addStoredBlock on blocks which have been shifted from one storage to another |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HADOOP-8174](https://issues.apache.org/jira/browse/HADOOP-8174) | Remove confusing comment in Path#isAbsolute() |  Trivial | fs | Suresh Srinivas | Suresh Srinivas |
+| [HDFS-8150](https://issues.apache.org/jira/browse/HDFS-8150) | Make getFileChecksum fail for blocks under construction |  Critical | . | Kihwal Lee | J.Andreina |
+| [MAPREDUCE-5708](https://issues.apache.org/jira/browse/MAPREDUCE-5708) | Duplicate String.format in YarnOutputFiles.getSpillFileForWrite |  Minor | . | Konstantin Weitz | Konstantin Weitz |
+| [YARN-1519](https://issues.apache.org/jira/browse/YARN-1519) | check if sysconf is implemented before using it |  Major | nodemanager | Radim Kolar | Radim Kolar |
+| [HDFS-8371](https://issues.apache.org/jira/browse/HDFS-8371) | Fix test failure in TestHdfsConfigFields for spanreceiver properties |  Major | . | Ray Chiang | Ray Chiang |
+| [MAPREDUCE-6273](https://issues.apache.org/jira/browse/MAPREDUCE-6273) | HistoryFileManager should check whether summaryFile exists to avoid FileNotFoundException causing HistoryFileInfo into MOVE\_FAILED state |  Minor | jobhistoryserver | zhihai xu | zhihai xu |
+| [YARN-2421](https://issues.apache.org/jira/browse/YARN-2421) | RM still allocates containers to an app in the FINISHING state |  Major | scheduler | Thomas Graves | Chang Li |
+| [YARN-3526](https://issues.apache.org/jira/browse/YARN-3526) | ApplicationMaster tracking URL is incorrectly redirected on a QJM cluster |  Major | resourcemanager, webapp | Weiwei Yang | Weiwei Yang |
+| [HADOOP-11988](https://issues.apache.org/jira/browse/HADOOP-11988) | Fix typo in the document for hadoop fs -find |  Trivial | documentation | Akira Ajisaka | Kengo Seki |
+| [HADOOP-10582](https://issues.apache.org/jira/browse/HADOOP-10582) | Fix the test case for copying to non-existent dir in TestFsShellCopy |  Minor | fs | Kousuke Saruta | Kousuke Saruta |
+| [HDFS-8345](https://issues.apache.org/jira/browse/HDFS-8345) | Storage policy APIs must be exposed via the FileSystem interface |  Major | hdfs-client | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8405](https://issues.apache.org/jira/browse/HDFS-8405) | Fix a typo in NamenodeFsck |  Minor | namenode | Tsz Wo Nicholas Sze | Takanobu Asanuma |
+| [HDFS-6348](https://issues.apache.org/jira/browse/HDFS-6348) | SecondaryNameNode not terminating properly on runtime exceptions |  Major | namenode | Rakesh R | Rakesh R |
+| [YARN-3601](https://issues.apache.org/jira/browse/YARN-3601) | Fix UT TestRMFailover.testRMWebAppRedirect |  Critical | resourcemanager, webapp | Weiwei Yang | Weiwei Yang |
+| [HDFS-8404](https://issues.apache.org/jira/browse/HDFS-8404) | Pending block replication can get stuck using older genstamp |  Major | namenode | Nathan Roberts | Nathan Roberts |
+| [HADOOP-11973](https://issues.apache.org/jira/browse/HADOOP-11973) | Ensure ZkDelegationTokenSecretManager namespace znodes get created with ACLs |  Major | security | Gregory Chanan | Gregory Chanan |
+| [HADOOP-11963](https://issues.apache.org/jira/browse/HADOOP-11963) | Metrics documentation for FSNamesystem misspells PendingDataNodeMessageCount. |  Trivial | documentation | Chris Nauroth | Anu Engineer |
+| [YARN-2821](https://issues.apache.org/jira/browse/YARN-2821) | Distributed shell app master becomes unresponsive sometimes |  Major | applications/distributed-shell | Varun Vasudev | Varun Vasudev |
+| [YARN-3677](https://issues.apache.org/jira/browse/YARN-3677) | Fix findbugs warnings in yarn-server-resourcemanager |  Minor | resourcemanager | Akira Ajisaka | Vinod Kumar Vavilapalli |
+| [YARN-3681](https://issues.apache.org/jira/browse/YARN-3681) | yarn cmd says "could not find main class 'queue'" in windows |  Blocker | yarn | Sumana Sathish | Varun Saxena |
+| [YARN-3654](https://issues.apache.org/jira/browse/YARN-3654) | ContainerLogsPage web UI should not have meta-refresh |  Major | yarn | Xuan Gong | Xuan Gong |
+| [YARN-3694](https://issues.apache.org/jira/browse/YARN-3694) | Fix dead link for TimelineServer REST API |  Minor | documentation | Akira Ajisaka | Jagadesh Kiran N |
+| [YARN-3646](https://issues.apache.org/jira/browse/YARN-3646) | Applications are getting stuck some times in case of retry policy forever |  Major | client | Raju Bairishetti | Raju Bairishetti |
+| [HDFS-8421](https://issues.apache.org/jira/browse/HDFS-8421) | Move startFile() and related operations into FSDirWriteFileOp |  Major | . | Haohui Mai | Haohui Mai |
+| [HDFS-8451](https://issues.apache.org/jira/browse/HDFS-8451) | DFSClient probe for encryption testing interprets empty URI property for "enabled" |  Blocker | encryption | Steve Loughran | Steve Loughran |
+| [YARN-3675](https://issues.apache.org/jira/browse/YARN-3675) | FairScheduler: RM quits when node removal races with continousscheduling on the same node |  Critical | fairscheduler | Anubhav Dhoot | Anubhav Dhoot |
+| [HADOOP-12014](https://issues.apache.org/jira/browse/HADOOP-12014) | hadoop-config.cmd displays a wrong error message |  Minor | scripts | Kengo Seki | Kengo Seki |
+| [HADOOP-11955](https://issues.apache.org/jira/browse/HADOOP-11955) | Fix a typo in the cluster setup doc |  Trivial | . | Kihwal Lee | Yanjun Wang |
+| [HDFS-8268](https://issues.apache.org/jira/browse/HDFS-8268) | Port conflict log for data node server is not sufficient |  Minor | datanode | Mohammad Shahid Khan | Mohammad Shahid Khan |
+| [YARN-3594](https://issues.apache.org/jira/browse/YARN-3594) | WintuilsProcessStubExecutor.startStreamReader leaks streams |  Trivial | nodemanager | Steve Loughran | Lars Francke |
+| [HADOOP-11743](https://issues.apache.org/jira/browse/HADOOP-11743) | maven doesn't clean all the site files |  Minor | documentation | Allen Wittenauer | ramtin |
+| [HADOOP-11927](https://issues.apache.org/jira/browse/HADOOP-11927) | Fix "undefined reference to dlopen" error when compiling libhadooppipes |  Major | build, native, tools | Xianyin Xin | Xianyin Xin |
+| [YARN-3701](https://issues.apache.org/jira/browse/YARN-3701) | Isolating the error of generating a single app report when getting all apps from generic history service |  Blocker | timelineserver | Zhijie Shen | Zhijie Shen |
+| [YARN-3707](https://issues.apache.org/jira/browse/YARN-3707) | RM Web UI queue filter doesn't work |  Blocker | . | Wangda Tan | Wangda Tan |
+| [YARN-2238](https://issues.apache.org/jira/browse/YARN-2238) | filtering on UI sticks even if I move away from the page |  Major | webapp | Sangjin Lee | Jian He |
+| [HADOOP-8751](https://issues.apache.org/jira/browse/HADOOP-8751) | NPE in Token.toString() when Token is constructed using null identifier |  Minor | security | Vlad Rozov | Kanaka Kumar Avvaru |
+| [HADOOP-11969](https://issues.apache.org/jira/browse/HADOOP-11969) | ThreadLocal initialization in several classes is not thread safe |  Critical | io | Sean Busbey | Sean Busbey |
+| [YARN-3626](https://issues.apache.org/jira/browse/YARN-3626) | On Windows localized resources are not moved to the front of the classpath when they should be |  Major | yarn | Craig Welch | Craig Welch |
+| [HADOOP-9891](https://issues.apache.org/jira/browse/HADOOP-9891) | CLIMiniCluster instructions fail with MiniYarnCluster ClassNotFoundException |  Minor | documentation | Steve Loughran | Darrell Taylor |
+| [HDFS-8431](https://issues.apache.org/jira/browse/HDFS-8431) | hdfs crypto class not found in Windows |  Critical | scripts | Sumana Sathish | Anu Engineer |
+| [HADOOP-12004](https://issues.apache.org/jira/browse/HADOOP-12004) | test-patch breaks with reexec in certain situations |  Critical | . | Allen Wittenauer | Sean Busbey |
+| [YARN-3723](https://issues.apache.org/jira/browse/YARN-3723) | Need to clearly document primaryFilter and otherInfo value type |  Critical | timelineserver | Zhijie Shen | Zhijie Shen |
+| [HDFS-8407](https://issues.apache.org/jira/browse/HDFS-8407) | libhdfs hdfsListDirectory must set errno to 0 on success |  Major | native | Juan Yu | Masatake Iwasaki |
+| [HDFS-8429](https://issues.apache.org/jira/browse/HDFS-8429) | Avoid stuck threads if there is an error in DomainSocketWatcher that stops the thread |  Major | . | zhouyingchao | zhouyingchao |
+| [HADOOP-11959](https://issues.apache.org/jira/browse/HADOOP-11959) | WASB should configure client side socket timeout in storage client blob request options |  Major | tools | Ivan Mitic | Ivan Mitic |
+| [HADOOP-11934](https://issues.apache.org/jira/browse/HADOOP-11934) | Use of JavaKeyStoreProvider in LdapGroupsMapping causes infinite loop |  Blocker | security | Mike Yoder | Larry McCay |
+| [HDFS-7401](https://issues.apache.org/jira/browse/HDFS-7401) | Add block info to DFSInputStream' WARN message when it adds node to deadNodes |  Minor | . | Ming Ma | Mohammad Arshad |
+| [HADOOP-12042](https://issues.apache.org/jira/browse/HADOOP-12042) | Users may see TrashPolicy if hdfs dfs -rm is run |  Major | . | Allen Wittenauer | J.Andreina |
+| [HDFS-7609](https://issues.apache.org/jira/browse/HDFS-7609) | Avoid retry cache collision when Standby NameNode loading edits |  Critical | namenode | Carrey Zhan | Ming Ma |
+| [HADOOP-11885](https://issues.apache.org/jira/browse/HADOOP-11885) | hadoop-dist dist-layout-stitching.sh does not work with dash |  Major | build | Andrew Wang | Andrew Wang |
+| [YARN-3725](https://issues.apache.org/jira/browse/YARN-3725) | App submission via REST API is broken in secure mode due to Timeline DT service address is empty |  Blocker | resourcemanager, timelineserver | Zhijie Shen | Zhijie Shen |
+| [HADOOP-12037](https://issues.apache.org/jira/browse/HADOOP-12037) | Fix wrong classname in example configuration of hadoop-auth documentation |  Trivial | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8256](https://issues.apache.org/jira/browse/HDFS-8256) | fsck "-storagepolicies , -blockId ,-replicaDetails " options are missed out in usage and from documentation |  Major | documentation | J.Andreina | J.Andreina |
+| [HDFS-8486](https://issues.apache.org/jira/browse/HDFS-8486) | DN startup may cause severe data loss |  Blocker | datanode | Daryn Sharp | Daryn Sharp |
+| [HDFS-8386](https://issues.apache.org/jira/browse/HDFS-8386) | Improve synchronization of 'streamer' reference in DFSOutputStream |  Major | hdfs-client | Rakesh R | Rakesh R |
+| [HDFS-8513](https://issues.apache.org/jira/browse/HDFS-8513) | Rename BlockPlacementPolicyRackFaultTolarent to BlockPlacementPolicyRackFaultTolerant |  Minor | namenode | Andrew Wang | Andrew Wang |
+| [HADOOP-11991](https://issues.apache.org/jira/browse/HADOOP-11991) | test-patch.sh isn't re-executed even if smart-apply-patch.sh is modified |  Major | test | Kengo Seki | Kengo Seki |
+| [HDFS-8270](https://issues.apache.org/jira/browse/HDFS-8270) | create() always retried with hardcoded timeout when file already exists with open lease |  Major | hdfs-client | Andrey Stepachev | J.Andreina |
+| [HDFS-8470](https://issues.apache.org/jira/browse/HDFS-8470) | fsimage loading progress should update inode, delegation token and cache pool count. |  Minor | namenode | tongshiquan | Surendra Singh Lilhore |
+| [HDFS-8523](https://issues.apache.org/jira/browse/HDFS-8523) | Remove usage information on unsupported operation "fsck -showprogress" from branch-2 |  Major | documentation | J.Andreina | J.Andreina |
+| [HDFS-3716](https://issues.apache.org/jira/browse/HDFS-3716) | Purger should remove stale fsimage ckpt files |  Minor | namenode | suja s | J.Andreina |
+| [YARN-3751](https://issues.apache.org/jira/browse/YARN-3751) | TestAHSWebServices fails after YARN-3467 |  Major | . | Zhijie Shen | Sunil G |
+| [YARN-3585](https://issues.apache.org/jira/browse/YARN-3585) | NodeManager cannot exit on SHUTDOWN event triggered and NM recovery is enabled |  Critical | . | Peng Zhang | Rohith Sharma K S |
+| [MAPREDUCE-6374](https://issues.apache.org/jira/browse/MAPREDUCE-6374) | Distributed Cache File visibility should check permission of full path |  Major | . | Chang Li | Chang Li |
+| [YARN-3762](https://issues.apache.org/jira/browse/YARN-3762) | FairScheduler: CME on FSParentQueue#getQueueUserAclInfo |  Critical | fairscheduler | Karthik Kambatla | Karthik Kambatla |
+| [YARN-3749](https://issues.apache.org/jira/browse/YARN-3749) | We should make a copy of configuration when init MiniYARNCluster with multiple RMs |  Major | . | Chun Chen | Chun Chen |
+| [MAPREDUCE-5965](https://issues.apache.org/jira/browse/MAPREDUCE-5965) | Hadoop streaming throws error if list of input files is high. Error is: "error=7, Argument list too long at if number of input file is high" |  Major | . | Arup Malakar | Wilfred Spiegelenburg |
+| [HADOOP-12018](https://issues.apache.org/jira/browse/HADOOP-12018) | smart-apply-patch.sh fails if the patch edits CR+LF files and is created by 'git diff --no-prefix' |  Minor | build | Akira Ajisaka | Kengo Seki |
+| [HADOOP-12019](https://issues.apache.org/jira/browse/HADOOP-12019) | update BUILDING.txt to include python for 'mvn site' in windows |  Major | . | Vinayakumar B | Vinayakumar B |
+| [MAPREDUCE-6382](https://issues.apache.org/jira/browse/MAPREDUCE-6382) | Don't escape HTML links in Diagnostics in JHS job overview |  Major | . | Siqi Li | Siqi Li |
+| [HADOOP-12058](https://issues.apache.org/jira/browse/HADOOP-12058) | Fix dead links to DistCp and Hadoop Archives pages. |  Minor | documentation, site | Kazuho Fujii | Kazuho Fujii |
+| [HDFS-8463](https://issues.apache.org/jira/browse/HDFS-8463) | Calling DFSInputStream.seekToNewSource just after stream creation causes  NullPointerException |  Minor | . | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-3764](https://issues.apache.org/jira/browse/YARN-3764) | CapacityScheduler should forbid moving LeafQueue from one parent to another |  Blocker | . | Wangda Tan | Wangda Tan |
+| [HADOOP-11994](https://issues.apache.org/jira/browse/HADOOP-11994) | smart-apply-patch wrongly assumes that git is infallible |  Major | test | Allen Wittenauer | Kengo Seki |
+| [HADOOP-11924](https://issues.apache.org/jira/browse/HADOOP-11924) | Tolerate JDK-8047340-related exceptions in Shell#isSetSidAvailable preventing class init |  Major | . | Gera Shegalov | Tsuyoshi Ozawa |
+| [YARN-3733](https://issues.apache.org/jira/browse/YARN-3733) | Fix DominantRC#compare() does not work as expected if cluster resource is empty |  Blocker | resourcemanager | Bibin A Chundatt | Rohith Sharma K S |
+| [MAPREDUCE-6377](https://issues.apache.org/jira/browse/MAPREDUCE-6377) | JHS sorting on state column not working in webUi |  Minor | jobhistoryserver | Bibin A Chundatt | zhihai xu |
+| [MAPREDUCE-6387](https://issues.apache.org/jira/browse/MAPREDUCE-6387) | Serialize the recently added Task#encryptedSpillKey field at the end |  Minor | . | Arun Suresh | Arun Suresh |
+| [HADOOP-12056](https://issues.apache.org/jira/browse/HADOOP-12056) | Use DirectoryStream in DiskChecker#checkDirs to detect errors when listing a directory |  Major | util | zhihai xu | zhihai xu |
+| [HDFS-8522](https://issues.apache.org/jira/browse/HDFS-8522) | Change heavily recorded NN logs from INFO to DEBUG level |  Major | namenode | Xiaoyu Yao | Xiaoyu Yao |
+| [YARN-3655](https://issues.apache.org/jira/browse/YARN-3655) | FairScheduler: potential livelock due to maxAMShare limitation and container reservation |  Critical | fairscheduler | zhihai xu | zhihai xu |
+| [HDFS-8539](https://issues.apache.org/jira/browse/HDFS-8539) | Hdfs doesnt have class 'debug' in windows |  Major | scripts | Sumana Sathish | Anu Engineer |
+| [YARN-3780](https://issues.apache.org/jira/browse/YARN-3780) | Should use equals when compare Resource in RMNodeImpl#ReconnectNodeTransition |  Minor | resourcemanager | zhihai xu | zhihai xu |
+| [YARN-3747](https://issues.apache.org/jira/browse/YARN-3747) | TestLocalDirsHandlerService should delete the created test directory logDir2 |  Minor | test | David Moore | David Moore |
+| [HDFS-8554](https://issues.apache.org/jira/browse/HDFS-8554) | TestDatanodeLayoutUpgrade fails on Windows. |  Major | test | Chris Nauroth | Chris Nauroth |
+| [YARN-3778](https://issues.apache.org/jira/browse/YARN-3778) | Fix Yarn resourcemanger CLI usage |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12054](https://issues.apache.org/jira/browse/HADOOP-12054) | RPC client should not retry for InvalidToken exceptions |  Critical | ipc | Daryn Sharp | Varun Saxena |
+| [HDFS-8552](https://issues.apache.org/jira/browse/HDFS-8552) | Fix hdfs CLI usage message for namenode and zkfc |  Major | . | Xiaoyu Yao | Brahma Reddy Battula |
+| [HADOOP-12073](https://issues.apache.org/jira/browse/HADOOP-12073) | Azure FileSystem PageBlobInputStream does not return -1 on EOF |  Major | tools | Ivan Mitic | Ivan Mitic |
+| [HDFS-8568](https://issues.apache.org/jira/browse/HDFS-8568) | TestClusterId#testFormatWithEmptyClusterIdOption is failing |  Major | . | Rakesh R | Rakesh R |
+| [HADOOP-7817](https://issues.apache.org/jira/browse/HADOOP-7817) | RawLocalFileSystem.append() should give FSDataOutputStream with accurate .getPos() |  Major | fs | Kristofer Tomasette | Kanaka Kumar Avvaru |
+| [MAPREDUCE-6350](https://issues.apache.org/jira/browse/MAPREDUCE-6350) | JobHistory doesn't support fully-functional search |  Critical | jobhistoryserver | Siqi Li | Siqi Li |
+| [MAPREDUCE-6389](https://issues.apache.org/jira/browse/MAPREDUCE-6389) | Fix BaileyBorweinPlouffe CLI usage message |  Trivial | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12052](https://issues.apache.org/jira/browse/HADOOP-12052) | IPC client downgrades all exception types to IOE, breaks callers trying to use them |  Critical | . | Steve Loughran | Brahma Reddy Battula |
+| [YARN-3785](https://issues.apache.org/jira/browse/YARN-3785) | Support for Resource as an argument during submitApp call in MockRM test class |  Minor | resourcemanager | Sunil G | Sunil G |
+| [HADOOP-12074](https://issues.apache.org/jira/browse/HADOOP-12074) | in Shell.java#runCommand() rethrow InterruptedException as InterruptedIOException |  Minor | . | Lavkesh Lahngir | Lavkesh Lahngir |
+| [HDFS-8566](https://issues.apache.org/jira/browse/HDFS-8566) | HDFS documentation about debug commands wrongly identifies them as "hdfs dfs" commands |  Major | documentation | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HDFS-8583](https://issues.apache.org/jira/browse/HDFS-8583) | Document that NFS gateway does not work with rpcbind on SLES 11 |  Major | documentation | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8572](https://issues.apache.org/jira/browse/HDFS-8572) | DN always uses HTTP/localhost@REALM principals in SPNEGO |  Blocker | . | Haohui Mai | Haohui Mai |
+| [YARN-3794](https://issues.apache.org/jira/browse/YARN-3794) | TestRMEmbeddedElector fails because of ambiguous LOG reference |  Major | test | Chengbing Liu | Chengbing Liu |
+| [HDFS-8593](https://issues.apache.org/jira/browse/HDFS-8593) | Calculation of effective layout version mishandles comparison to current layout version in storage. |  Major | namenode | Chris Nauroth | Chris Nauroth |
+| [HDFS-8596](https://issues.apache.org/jira/browse/HDFS-8596) | TestDistributedFileSystem et al tests are broken in branch-2 due to incorrect setting of "datanode" attribute |  Blocker | datanode | Yongjun Zhang | Yongjun Zhang |
+| [HDFS-8595](https://issues.apache.org/jira/browse/HDFS-8595) | TestCommitBlockSynchronization fails in branch-2.7 |  Major | test | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8607](https://issues.apache.org/jira/browse/HDFS-8607) | TestFileCorruption doesn't work as expected |  Major | test | Walter Su | Walter Su |
+| [HADOOP-12001](https://issues.apache.org/jira/browse/HADOOP-12001) | Limiting LDAP search conflicts with posixGroup addition |  Blocker | security | Patrick White | Patrick White |
+| [HADOOP-12078](https://issues.apache.org/jira/browse/HADOOP-12078) | The default retry policy does not handle RetriableException correctly |  Critical | ipc | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8576](https://issues.apache.org/jira/browse/HDFS-8576) |  Lease recovery should return true if the lease can be released and the file can be closed |  Major | namenode | J.Andreina | J.Andreina |
+| [HDFS-8592](https://issues.apache.org/jira/browse/HDFS-8592) | SafeModeException never get unwrapped |  Major | . | Haohui Mai | Haohui Mai |
+| [HADOOP-12095](https://issues.apache.org/jira/browse/HADOOP-12095) | org.apache.hadoop.fs.shell.TestCount fails |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-4660](https://issues.apache.org/jira/browse/HDFS-4660) | Block corruption can happen during pipeline recovery |  Blocker | datanode | Peng Zhang | Kihwal Lee |
+| [HDFS-8548](https://issues.apache.org/jira/browse/HDFS-8548) | Minicluster throws NPE on shutdown |  Major | . | Mike Drob | Surendra Singh Lilhore |
+| [YARN-3714](https://issues.apache.org/jira/browse/YARN-3714) | AM proxy filter can not get RM webapp address from yarn.resourcemanager.hostname.rm-id |  Minor | . | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8551](https://issues.apache.org/jira/browse/HDFS-8551) | Fix hdfs datanode CLI usage message |  Major | . | Xiaoyu Yao | Brahma Reddy Battula |
+| [HADOOP-12076](https://issues.apache.org/jira/browse/HADOOP-12076) | Incomplete Cache Mechanism in CredentialProvider API |  Major | security | Larry McCay | Larry McCay |
+| [YARN-3617](https://issues.apache.org/jira/browse/YARN-3617) | Fix WindowsResourceCalculatorPlugin.getCpuFrequency() returning always -1 |  Minor | . | Georg Berendt | J.Andreina |
+| [YARN-3804](https://issues.apache.org/jira/browse/YARN-3804) | Both RM are on standBy state when kerberos user not in yarn.admin.acl |  Critical | resourcemanager | Bibin A Chundatt | Varun Saxena |
+| [HDFS-8446](https://issues.apache.org/jira/browse/HDFS-8446) | Separate safemode related operations in GetBlockLocations() |  Minor | . | Haohui Mai | Haohui Mai |
+| [HDFS-8615](https://issues.apache.org/jira/browse/HDFS-8615) | Correct HTTP method in WebHDFS document |  Major | documentation | Akira Ajisaka | Brahma Reddy Battula |
+| [MAPREDUCE-6373](https://issues.apache.org/jira/browse/MAPREDUCE-6373) | The logger reports total input paths but it is referring to input files |  Trivial | . | Andi Chirita Amdocs | Bibin A Chundatt |
+| [YARN-3824](https://issues.apache.org/jira/browse/YARN-3824) | Fix two minor nits in member variable properties of YarnConfiguration |  Trivial | yarn | Ray Chiang | Ray Chiang |
+| [HADOOP-12100](https://issues.apache.org/jira/browse/HADOOP-12100) | ImmutableFsPermission should not override applyUmask since that method doesn't modify the FsPermission |  Major | . | Robert Kanter | Bibin A Chundatt |
+| [YARN-3802](https://issues.apache.org/jira/browse/YARN-3802) | Two RMNodes for the same NodeId are used in RM sometimes after NM is reconnected. |  Major | resourcemanager | zhihai xu | zhihai xu |
+| [HDFS-8633](https://issues.apache.org/jira/browse/HDFS-8633) | Fix setting of dfs.datanode.readahead.bytes in hdfs-default.xml to match DFSConfigKeys |  Minor | datanode | Ray Chiang | Ray Chiang |
+| [HDFS-8626](https://issues.apache.org/jira/browse/HDFS-8626) | Reserved RBW space is not released if creation of RBW File fails |  Blocker | . | Kanaka Kumar Avvaru | Kanaka Kumar Avvaru |
+| [MAPREDUCE-6405](https://issues.apache.org/jira/browse/MAPREDUCE-6405) | NullPointerException in App Attempts page |  Major | . | Siqi Li | Siqi Li |
+| [HADOOP-12103](https://issues.apache.org/jira/browse/HADOOP-12103) | Small refactoring of DelegationTokenAuthenticationFilter to allow code sharing |  Minor | security | Yongjun Zhang | Yongjun Zhang |
+| [HDFS-8337](https://issues.apache.org/jira/browse/HDFS-8337) | Accessing httpfs via webhdfs doesn't work from a jar with kerberos |  Major | security, webhdfs | Yongjun Zhang | Yongjun Zhang |
+| [MAPREDUCE-6403](https://issues.apache.org/jira/browse/MAPREDUCE-6403) | Fix typo in the usage of NNBench |  Trivial | documentation | Akira Ajisaka | Jagadesh Kiran N |
+| [HDFS-8480](https://issues.apache.org/jira/browse/HDFS-8480) | Fix performance and timeout issues in HDFS-7929 by using hard-links to preserve old edit logs instead of copying them |  Critical | . | Zhe Zhang | Zhe Zhang |
+| [MAPREDUCE-5948](https://issues.apache.org/jira/browse/MAPREDUCE-5948) | org.apache.hadoop.mapred.LineRecordReader does not handle multibyte record delimiters well |  Critical | . | Kris Geusebroek | Akira Ajisaka |
+| [HDFS-8542](https://issues.apache.org/jira/browse/HDFS-8542) | WebHDFS getHomeDirectory behavior does not match specification |  Major | webhdfs | Jakob Homan | Kanaka Kumar Avvaru |
+| [YARN-3842](https://issues.apache.org/jira/browse/YARN-3842) | NMProxy should retry on NMNotYetReadyException |  Critical | . | Karthik Kambatla | Robert Kanter |
+| [YARN-3835](https://issues.apache.org/jira/browse/YARN-3835) | hadoop-yarn-server-resourcemanager test package bundles core-site.xml, yarn-site.xml |  Minor | resourcemanager | Vamsee Yarlagadda | Vamsee Yarlagadda |
+| [MAPREDUCE-6410](https://issues.apache.org/jira/browse/MAPREDUCE-6410) | Aggregated Logs Deletion doesnt work after refreshing Log Retention Settings in secure cluster |  Critical | . | Zhang Wei | Varun Saxena |
+| [MAPREDUCE-6400](https://issues.apache.org/jira/browse/MAPREDUCE-6400) | Multiple shuffle transfer fails because input is closed too early |  Blocker | task | Akira Ajisaka | Brahma Reddy Battula |
+| [YARN-3809](https://issues.apache.org/jira/browse/YARN-3809) | Failed to launch new attempts because ApplicationMasterLauncher's threads all hang |  Major | resourcemanager | Jun Gong | Jun Gong |
+| [YARN-3832](https://issues.apache.org/jira/browse/YARN-3832) | Resource Localization fails on a cluster due to existing cache directories |  Critical | nodemanager | Ranga Swamy | Brahma Reddy Battula |
+| [YARN-3790](https://issues.apache.org/jira/browse/YARN-3790) | usedResource from rootQueue metrics may get stale data for FS scheduler after recovering the container |  Major | fairscheduler, test | Rohith Sharma K S | zhihai xu |
+| [HADOOP-11958](https://issues.apache.org/jira/browse/HADOOP-11958) | MetricsSystemImpl fails to show backtrace when an error occurs |  Major | . | Jason Lowe | Jason Lowe |
+| [HDFS-8646](https://issues.apache.org/jira/browse/HDFS-8646) | Prune cached replicas from DatanodeDescriptor state on replica invalidation |  Major | caching | Andrew Wang | Andrew Wang |
+| [YARN-3826](https://issues.apache.org/jira/browse/YARN-3826) | Race condition in ResourceTrackerService leads to wrong diagnostics messages |  Major | resourcemanager | Chengbing Liu | Chengbing Liu |
+| [YARN-3745](https://issues.apache.org/jira/browse/YARN-3745) | SerializedException should also try to instantiate internal exception with the default constructor |  Major | . | Lavkesh Lahngir | Lavkesh Lahngir |
+| [MAPREDUCE-6413](https://issues.apache.org/jira/browse/MAPREDUCE-6413) | TestLocalJobSubmission is failing with unknown host |  Major | test | Jason Lowe | zhihai xu |
+| [HDFS-8665](https://issues.apache.org/jira/browse/HDFS-8665) | Fix replication check in DFSTestUtils#waitForReplication |  Trivial | test | Andrew Wang | Andrew Wang |
+| [HADOOP-8151](https://issues.apache.org/jira/browse/HADOOP-8151) | Error handling in snappy decompressor throws invalid exceptions |  Major | io, native | Todd Lipcon | Matt Foley |
+| [YARN-3850](https://issues.apache.org/jira/browse/YARN-3850) | NM fails to read files from full disks which can lead to container logs being lost and other issues |  Blocker | log-aggregation, nodemanager | Varun Saxena | Varun Saxena |
+| [HDFS-8656](https://issues.apache.org/jira/browse/HDFS-8656) | Preserve compatibility of ClientProtocol#rollingUpgrade after finalization |  Critical | rolling upgrades | Andrew Wang | Andrew Wang |
+| [YARN-3859](https://issues.apache.org/jira/browse/YARN-3859) | LeafQueue doesn't print user properly for application add |  Minor | capacityscheduler | Devaraj K | Varun Saxena |
+| [HDFS-8681](https://issues.apache.org/jira/browse/HDFS-8681) | BlockScanner is incorrectly disabled by default |  Blocker | datanode | Andrew Wang | Arpit Agarwal |
+| [YARN-3860](https://issues.apache.org/jira/browse/YARN-3860) | rmadmin -transitionToActive should check the state of non-target node |  Major | resourcemanager | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8586](https://issues.apache.org/jira/browse/HDFS-8586) | Dead Datanode is allocated for write when client is  from deadnode |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12119](https://issues.apache.org/jira/browse/HADOOP-12119) | hadoop fs -expunge does not work for federated namespace |  Major | . | Vrushali C | J.Andreina |
+| [HDFS-8628](https://issues.apache.org/jira/browse/HDFS-8628) | Update missing command option for fetchdt |  Major | documentation | J.Andreina | J.Andreina |
+| [YARN-3695](https://issues.apache.org/jira/browse/YARN-3695) | ServerProxy (NMProxy, etc.) shouldn't retry forever for non network exception. |  Major | . | Junping Du | Raju Bairishetti |
+| [HADOOP-12089](https://issues.apache.org/jira/browse/HADOOP-12089) | StorageException complaining " no lease ID" when updating FolderLastModifiedTime in WASB |  Major | tools | Duo Xu | Duo Xu |
+| [YARN-3770](https://issues.apache.org/jira/browse/YARN-3770) | SerializedException should also handle java.lang.Error |  Major | . | Lavkesh Lahngir | Lavkesh Lahngir |
+| [HDFS-8687](https://issues.apache.org/jira/browse/HDFS-8687) | Remove the duplicate usage message from Dfsck.java |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12107](https://issues.apache.org/jira/browse/HADOOP-12107) | long running apps may have a huge number of StatisticsData instances under FileSystem |  Critical | fs | Sangjin Lee | Sangjin Lee |
+| [HDFS-8579](https://issues.apache.org/jira/browse/HDFS-8579) | Update HDFS usage with missing options |  Minor | . | J.Andreina | J.Andreina |
+| [HADOOP-12154](https://issues.apache.org/jira/browse/HADOOP-12154) | FileSystem#getUsed() returns the file length only from root '/' |  Major | . | tongshiquan | J.Andreina |
+| [YARN-3768](https://issues.apache.org/jira/browse/YARN-3768) | ArrayIndexOutOfBoundsException with empty environment variables |  Major | yarn | Joe Ferner | zhihai xu |
+| [HADOOP-10798](https://issues.apache.org/jira/browse/HADOOP-10798) | globStatus() should always return a sorted list of files |  Minor | . | Felix Borchers | Colin P. McCabe |
+| [HADOOP-12124](https://issues.apache.org/jira/browse/HADOOP-12124) | Add HTrace support for FsShell |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HADOOP-12159](https://issues.apache.org/jira/browse/HADOOP-12159) | Move DistCpUtils#compareFs() to org.apache.hadoop.fs.FileUtil and fix for HA namespaces |  Major | . | Ray Chiang | Ray Chiang |
+| [MAPREDUCE-6121](https://issues.apache.org/jira/browse/MAPREDUCE-6121) | JobResourceUpdater#compareFs() doesn't handle HA namespaces |  Major | mrv2 | Thomas Graves | Ray Chiang |
+| [HADOOP-12116](https://issues.apache.org/jira/browse/HADOOP-12116) | Fix unrecommended syntax usages in hadoop/hdfs/yarn script for cygwin in branch-2 |  Major | scripts | Li Lu | Li Lu |
+| [HADOOP-12164](https://issues.apache.org/jira/browse/HADOOP-12164) | Fix TestMove and TestFsShellReturnCode failed to get command name using reflection. |  Minor | . | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [YARN-3823](https://issues.apache.org/jira/browse/YARN-3823) | Fix mismatch in default values for yarn.scheduler.maximum-allocation-vcores property |  Minor | . | Ray Chiang | Ray Chiang |
+| [YARN-3830](https://issues.apache.org/jira/browse/YARN-3830) | AbstractYarnScheduler.createReleaseCache may try to clean a null attempt |  Major | scheduler | nijel | nijel |
+| [HDFS-8706](https://issues.apache.org/jira/browse/HDFS-8706) | Fix typo in datanode startup options in HDFSCommands.html |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [MAPREDUCE-6420](https://issues.apache.org/jira/browse/MAPREDUCE-6420) | Interrupted Exception in LocalContainerLauncher should be logged in warn/info level |  Major | . | Chang Li | Chang Li |
+| [MAPREDUCE-6418](https://issues.apache.org/jira/browse/MAPREDUCE-6418) | MRApp should not shutdown LogManager during shutdown |  Major | test | Chang Li | Chang Li |
+| [YARN-3793](https://issues.apache.org/jira/browse/YARN-3793) | Several NPEs when deleting local files on NM recovery |  Major | nodemanager | Karthik Kambatla | Varun Saxena |
+| [HDFS-8666](https://issues.apache.org/jira/browse/HDFS-8666) | speedup TestMover |  Major | test | Walter Su | Walter Su |
+| [HADOOP-12171](https://issues.apache.org/jira/browse/HADOOP-12171) | Shorten overly-long htrace span names for server |  Major | tracing | Colin P. McCabe | Colin P. McCabe |
+| [YARN-3875](https://issues.apache.org/jira/browse/YARN-3875) | FSSchedulerNode#reserveResource() doesn't print Application Id properly in log |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-3508](https://issues.apache.org/jira/browse/YARN-3508) | Prevent processing preemption events on the main RM dispatcher |  Major | resourcemanager, scheduler | Jason Lowe | Varun Saxena |
+| [HADOOP-12173](https://issues.apache.org/jira/browse/HADOOP-12173) | NetworkTopology#add calls NetworkTopology#toString always |  Major | . | Inigo Goiri | Inigo Goiri |
+| [HDFS-8577](https://issues.apache.org/jira/browse/HDFS-8577) | Avoid retrying to recover lease on a file which does not exist |  Major | . | J.Andreina | J.Andreina |
+| [YARN-3882](https://issues.apache.org/jira/browse/YARN-3882) | AggregatedLogFormat should close aclScanner and ownerScanner after create them. |  Minor | nodemanager | zhihai xu | zhihai xu |
+| [MAPREDUCE-6425](https://issues.apache.org/jira/browse/MAPREDUCE-6425) | ShuffleHandler passes wrong "base" parameter to getMapOutputInfo if mapId is not in the cache. |  Major | mrv2, nodemanager | zhihai xu | zhihai xu |
+| [HADOOP-12186](https://issues.apache.org/jira/browse/HADOOP-12186) | ActiveStandbyElector shouldn't call monitorLockNodeAsync multiple times |  Major | ha | zhihai xu | zhihai xu |
+| [HDFS-8686](https://issues.apache.org/jira/browse/HDFS-8686) | WebHdfsFileSystem#getXAttr(Path p, final String name) doesn't work if namespace is in capitals |  Major | webhdfs | Jagadesh Kiran N | Kanaka Kumar Avvaru |
+| [YARN-3837](https://issues.apache.org/jira/browse/YARN-3837) | javadocs of TimelineAuthenticationFilterInitializer give wrong prefix for auth options |  Minor | timelineserver | Steve Loughran | Bibin A Chundatt |
+| [HADOOP-12117](https://issues.apache.org/jira/browse/HADOOP-12117) | Potential NPE from Configuration#loadProperty with allowNullValueProperties set. |  Minor | conf | zhihai xu | zhihai xu |
+| [MAPREDUCE-6038](https://issues.apache.org/jira/browse/MAPREDUCE-6038) | A boolean may be set error in the Word Count v2.0 in MapReduce Tutorial |  Minor | . | Pei Ma | Tsuyoshi Ozawa |
+| [YARN-3892](https://issues.apache.org/jira/browse/YARN-3892) | NPE on RMStateStore#serviceStop when CapacityScheduler#serviceInit fails |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-3690](https://issues.apache.org/jira/browse/YARN-3690) | [JDK8] 'mvn site' fails |  Major | api, site | Akira Ajisaka | Brahma Reddy Battula |
+| [HADOOP-12202](https://issues.apache.org/jira/browse/HADOOP-12202) | releasedocmaker drops missing component and assignee entries |  Blocker | yetus | Allen Wittenauer | Allen Wittenauer |
+| [HDFS-8642](https://issues.apache.org/jira/browse/HDFS-8642) | Make TestFileTruncate more reliable |  Minor | . | Rakesh R | Rakesh R |
+| [HADOOP-11878](https://issues.apache.org/jira/browse/HADOOP-11878) | FileContext.java # fixRelativePart should check for not null for a more informative exception |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12201](https://issues.apache.org/jira/browse/HADOOP-12201) | Add tracing to FileSystem#createFileSystem and Globber#glob |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HADOOP-12200](https://issues.apache.org/jira/browse/HADOOP-12200) | TestCryptoStreamsWithOpensslAesCtrCryptoCodec should be skipped in non-native profile |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [MAPREDUCE-6426](https://issues.apache.org/jira/browse/MAPREDUCE-6426) | TestShuffleHandler#testGetMapOutputInfo is failing |  Major | test | Devaraj K | zhihai xu |
+| [HDFS-8729](https://issues.apache.org/jira/browse/HDFS-8729) | Fix testTruncateWithDataNodesRestartImmediately occasionally failed |  Minor | . | Walter Su | Walter Su |
+| [YARN-3888](https://issues.apache.org/jira/browse/YARN-3888) | ApplicationMaster link is broken in RM WebUI when appstate is NEW |  Minor | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-8749](https://issues.apache.org/jira/browse/HDFS-8749) | Fix findbugs warning in BlockManager.java |  Minor | . | Akira Ajisaka | Brahma Reddy Battula |
+| [HDFS-2956](https://issues.apache.org/jira/browse/HDFS-2956) | calling fetchdt without a --renewer argument throws NPE |  Major | security | Todd Lipcon | Vinayakumar B |
+| [HDFS-8751](https://issues.apache.org/jira/browse/HDFS-8751) | Remove setBlocks API from INodeFile and misc code cleanup |  Major | namenode | Zhe Zhang | Zhe Zhang |
+| [YARN-3849](https://issues.apache.org/jira/browse/YARN-3849) | Too much of preemption activity causing continuos killing of containers across queues |  Critical | capacityscheduler | Sunil G | Sunil G |
+| [YARN-3917](https://issues.apache.org/jira/browse/YARN-3917) | getResourceCalculatorPlugin for the default should intercept all exceptions |  Major | . | Gera Shegalov | Gera Shegalov |
+| [YARN-3894](https://issues.apache.org/jira/browse/YARN-3894) | RM startup should fail for wrong CS xml NodeLabel capacity configuration |  Critical | capacityscheduler | Bibin A Chundatt | Bibin A Chundatt |
+| [MAPREDUCE-6421](https://issues.apache.org/jira/browse/MAPREDUCE-6421) | Fix findbugs warning in RMContainerAllocator.reduceNodeLabelExpression |  Major | . | Ray Chiang | Brahma Reddy Battula |
+| [HADOOP-12191](https://issues.apache.org/jira/browse/HADOOP-12191) | Bzip2Factory is not thread safe |  Major | io | Jason Lowe | Brahma Reddy Battula |
+| [HDFS-7608](https://issues.apache.org/jira/browse/HDFS-7608) | hdfs dfsclient  newConnectedPeer has no write timeout |  Major | fuse-dfs, hdfs-client | zhangshilong | Xiaoyu Yao |
+| [HADOOP-12153](https://issues.apache.org/jira/browse/HADOOP-12153) | ByteBufferReadable doesn't declare @InterfaceAudience and @InterfaceStability |  Minor | fs | Steve Loughran | Brahma Reddy Battula |
+| [HDFS-8778](https://issues.apache.org/jira/browse/HDFS-8778) | TestBlockReportRateLimiting#testLeaseExpiration can deadlock |  Major | test | Arpit Agarwal | Arpit Agarwal |
+| [HADOOP-10615](https://issues.apache.org/jira/browse/HADOOP-10615) | FileInputStream in JenkinsHash#main() is never closed |  Minor | . | Ted Yu | Chen He |
+| [HADOOP-12240](https://issues.apache.org/jira/browse/HADOOP-12240) | Fix tests requiring native library to be skipped in non-native profile |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-3805](https://issues.apache.org/jira/browse/YARN-3805) | Update the documentation of Disk Checker based on YARN-90 |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8767](https://issues.apache.org/jira/browse/HDFS-8767) | RawLocalFileSystem.listStatus() returns null for UNIX pipefile |  Critical | . | Haohui Mai | Kanaka Kumar Avvaru |
+| [YARN-3885](https://issues.apache.org/jira/browse/YARN-3885) | ProportionalCapacityPreemptionPolicy doesn't preempt if queue is more than 2 level |  Blocker | yarn | Ajith S | Ajith S |
+| [YARN-3453](https://issues.apache.org/jira/browse/YARN-3453) | Fair Scheduler: Parts of preemption logic uses DefaultResourceCalculator even in DRF mode causing thrashing |  Major | fairscheduler | Ashwin Shankar | Arun Suresh |
+| [YARN-3535](https://issues.apache.org/jira/browse/YARN-3535) | Scheduler must re-request container resources when RMContainer transitions from ALLOCATED to KILLED |  Critical | capacityscheduler, fairscheduler, resourcemanager | Peng Zhang | Peng Zhang |
+| [YARN-3905](https://issues.apache.org/jira/browse/YARN-3905) | Application History Server UI NPEs when accessing apps run after RM restart |  Major | timelineserver | Eric Payne | Eric Payne |
+| [HADOOP-12235](https://issues.apache.org/jira/browse/HADOOP-12235) | hadoop-openstack junit & mockito dependencies should be "provided" |  Minor | build, fs/swift | Steve Loughran | Ted Yu |
+| [HADOOP-12209](https://issues.apache.org/jira/browse/HADOOP-12209) | Comparable type should be in FileStatus |  Minor | fs | Yong Zhang | Yong Zhang |
+| [HADOOP-12088](https://issues.apache.org/jira/browse/HADOOP-12088) | KMSClientProvider uses equalsIgnoreCase("application/json") |  Major | kms | Steve Loughran | Brahma Reddy Battula |
+| [HADOOP-12051](https://issues.apache.org/jira/browse/HADOOP-12051) | ProtobufRpcEngine.invoke() should use Exception.toString() over getMessage in logging/span events |  Minor | ipc | Steve Loughran | Varun Saxena |
+| [HADOOP-12237](https://issues.apache.org/jira/browse/HADOOP-12237) | releasedocmaker.py doesn't work behind a proxy |  Major | yetus | Tsuyoshi Ozawa | Tsuyoshi Ozawa |
+| [HDFS-7582](https://issues.apache.org/jira/browse/HDFS-7582) | Enforce maximum number of ACL entries separately per access and default. |  Major | namenode | Vinayakumar B | Vinayakumar B |
+| [HDFS-8773](https://issues.apache.org/jira/browse/HDFS-8773) | Few FSNamesystem metrics are not documented in the Metrics page |  Major | documentation | Rakesh R | Rakesh R |
+| [YARN-3878](https://issues.apache.org/jira/browse/YARN-3878) | AsyncDispatcher can hang while stopping if it is configured for draining events on stop |  Critical | . | Varun Saxena | Varun Saxena |
+| [HDFS-7728](https://issues.apache.org/jira/browse/HDFS-7728) | Avoid updating quota usage while loading edits |  Major | . | Jing Zhao | Jing Zhao |
+| [HADOOP-11962](https://issues.apache.org/jira/browse/HADOOP-11962) | Sasl message with MD5 challenge text shouldn't be LOG out even in debug level. |  Critical | ipc, security | Junping Du | Junping Du |
+| [HADOOP-12017](https://issues.apache.org/jira/browse/HADOOP-12017) | Hadoop archives command should use configurable replication factor when closing |  Major | . | Zhe Zhang | Bibin A Chundatt |
+| [HADOOP-12239](https://issues.apache.org/jira/browse/HADOOP-12239) | StorageException complaining " no lease ID" when updating FolderLastModifiedTime in WASB |  Major | fs/azure, tools | Duo Xu | Duo Xu |
+| [YARN-3932](https://issues.apache.org/jira/browse/YARN-3932) | SchedulerApplicationAttempt#getResourceUsageReport and UserInfo should based on total-used-resources |  Major | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-3954](https://issues.apache.org/jira/browse/YARN-3954) | TestYarnConfigurationFields#testCompareConfigurationClassAgainstXml fails in trunk |  Major | . | Varun Saxena | Varun Saxena |
+| [YARN-2019](https://issues.apache.org/jira/browse/YARN-2019) | Retrospect on decision of making RM crashed if any exception throw in ZKRMStateStore |  Critical | . | Junping Du | Jian He |
+| [HDFS-8797](https://issues.apache.org/jira/browse/HDFS-8797) | WebHdfsFileSystem creates too many connections for pread |  Major | webhdfs | Jing Zhao | Jing Zhao |
+| [YARN-3941](https://issues.apache.org/jira/browse/YARN-3941) | Proportional Preemption policy should try to avoid sending duplicate PREEMPT\_CONTAINER event to scheduler |  Major | capacityscheduler | Sunil G | Sunil G |
+| [YARN-3900](https://issues.apache.org/jira/browse/YARN-3900) | Protobuf layout  of yarn\_security\_token causes errors in other protos that include it |  Major | . | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-3845](https://issues.apache.org/jira/browse/YARN-3845) | Scheduler page does not render RGBA color combinations in IE11 |  Minor | . | Jagadesh Kiran N | Mohammad Shahid Khan |
+| [HDFS-8806](https://issues.apache.org/jira/browse/HDFS-8806) | Inconsistent metrics: number of missing blocks with replication factor 1 not properly cleared |  Major | . | Zhe Zhang | Zhe Zhang |
+| [YARN-3967](https://issues.apache.org/jira/browse/YARN-3967) | Fetch the application report from the AHS if the RM does not know about it |  Major | . | Mit Desai | Mit Desai |
+| [YARN-3957](https://issues.apache.org/jira/browse/YARN-3957) | FairScheduler NPE In FairSchedulerQueueInfo causing scheduler page to return 500 |  Major | fairscheduler | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-3925](https://issues.apache.org/jira/browse/YARN-3925) | ContainerLogsUtils#getContainerLogFile fails to read container log files from full disks. |  Critical | nodemanager | zhihai xu | zhihai xu |
+| [YARN-3973](https://issues.apache.org/jira/browse/YARN-3973) | Recent changes to application priority management break reservation system from YARN-1051 |  Major | resourcemanager | Carlo Curino | Carlo Curino |
+| [YARN-3958](https://issues.apache.org/jira/browse/YARN-3958) | TestYarnConfigurationFields should be moved to hadoop-yarn-api module |  Major | . | Varun Saxena | Varun Saxena |
+| [HDFS-8810](https://issues.apache.org/jira/browse/HDFS-8810) | Correct assertions in TestDFSInotifyEventInputStream class. |  Minor | test | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HDFS-8785](https://issues.apache.org/jira/browse/HDFS-8785) | TestDistributedFileSystem is failing in trunk |  Major | test | Arpit Agarwal | Xiaoyu Yao |
+| [YARN-2194](https://issues.apache.org/jira/browse/YARN-2194) | Cgroups cease to work in RHEL7 |  Critical | nodemanager | Wei Yan | Wei Yan |
+| [YARN-3846](https://issues.apache.org/jira/browse/YARN-3846) | RM Web UI queue filter is not working |  Major | yarn | Mohammad Shahid Khan | Mohammad Shahid Khan |
+| [HADOOP-12245](https://issues.apache.org/jira/browse/HADOOP-12245) | References to misspelled REMAINING\_QUATA in FileSystemShell.md |  Minor | documentation | Gera Shegalov | Gabor Liptak |
+| [YARN-3982](https://issues.apache.org/jira/browse/YARN-3982) | container-executor parsing of container-executor.cfg broken in trunk and branch-2 |  Blocker | nodemanager | Varun Vasudev | Varun Vasudev |
+| [HADOOP-12175](https://issues.apache.org/jira/browse/HADOOP-12175) | FsShell must load SpanReceiverHost to support tracing |  Major | tracing | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8670](https://issues.apache.org/jira/browse/HDFS-8670) | Better to exclude decommissioned nodes for namenode NodeUsage JMX |  Major | . | Ming Ma | J.Andreina |
+| [HADOOP-10945](https://issues.apache.org/jira/browse/HADOOP-10945) | 4-digit octal umask permissions throws a parse error |  Major | fs | Jason Lowe | Chang Li |
+| [YARN-3919](https://issues.apache.org/jira/browse/YARN-3919) | NPEs' while stopping service after exception during CommonNodeLabelsManager#start |  Trivial | resourcemanager | Varun Saxena | Varun Saxena |
+| [YARN-3963](https://issues.apache.org/jira/browse/YARN-3963) | AddNodeLabel on duplicate label addition shows success |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [MAPREDUCE-6433](https://issues.apache.org/jira/browse/MAPREDUCE-6433) | launchTime may be negative |  Major | jobhistoryserver, mrv2 | Allen Wittenauer | zhihai xu |
+| [YARN-3990](https://issues.apache.org/jira/browse/YARN-3990) | AsyncDispatcher may overloaded with RMAppNodeUpdateEvent when Node is connected/disconnected |  Critical | resourcemanager | Rohith Sharma K S | Bibin A Chundatt |
+| [HDFS-6860](https://issues.apache.org/jira/browse/HDFS-6860) | BlockStateChange logs are too noisy |  Major | namenode | Arpit Agarwal | Chang Li |
+| [HADOOP-12268](https://issues.apache.org/jira/browse/HADOOP-12268) | AbstractContractAppendTest#testRenameFileBeingAppended misses rename operation. |  Major | test | zhihai xu | zhihai xu |
+| [HDFS-8847](https://issues.apache.org/jira/browse/HDFS-8847) | change TestHDFSContractAppend to not override testRenameFileBeingAppended method. |  Major | test | zhihai xu | zhihai xu |
+| [HDFS-8850](https://issues.apache.org/jira/browse/HDFS-8850) | VolumeScanner thread exits with exception if there is no block pool to be scanned but there are suspicious blocks |  Major | datanode | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-8844](https://issues.apache.org/jira/browse/HDFS-8844) | TestHDFSCLI does not cleanup the test directory |  Minor | test | Akira Ajisaka | Masatake Iwasaki |
+| [HADOOP-12274](https://issues.apache.org/jira/browse/HADOOP-12274) | Remove direct download link from BUILDING.txt |  Minor | documentation | Caleb Severn | Caleb Severn |
+| [HADOOP-12302](https://issues.apache.org/jira/browse/HADOOP-12302) | Fix native compilation on Windows after HADOOP-7824 |  Blocker | . | Vinayakumar B | Vinayakumar B |
+| [YARN-3983](https://issues.apache.org/jira/browse/YARN-3983) | Make CapacityScheduler to easier extend application allocation logic |  Major | . | Wangda Tan | Wangda Tan |
+| [HADOOP-12304](https://issues.apache.org/jira/browse/HADOOP-12304) | Applications using FileContext fail with the default file system configured to be wasb/s3/etc. |  Blocker | fs | Chris Nauroth | Chris Nauroth |
+| [HADOOP-11932](https://issues.apache.org/jira/browse/HADOOP-11932) |  MetricsSinkAdapter hangs when being stopped |  Critical | . | Jian He | Brahma Reddy Battula |
+| [HDFS-8856](https://issues.apache.org/jira/browse/HDFS-8856) | Make LeaseManager#countPath O(1) |  Major | namenode | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8772](https://issues.apache.org/jira/browse/HDFS-8772) | Fix TestStandbyIsHot#testDatanodeRestarts which occasionally fails |  Major | . | Walter Su | Walter Su |
+| [YARN-3966](https://issues.apache.org/jira/browse/YARN-3966) | Fix excessive loggings in CapacityScheduler |  Major | . | Jian He | Jian He |
+| [HDFS-8866](https://issues.apache.org/jira/browse/HDFS-8866) | Typo in docs: Rumtime -\> Runtime |  Trivial | documentation, webhdfs | Jakob Homan | Gabor Liptak |
+| [YARN-3999](https://issues.apache.org/jira/browse/YARN-3999) | RM hangs on draining events |  Major | . | Jian He | Jian He |
+| [YARN-4026](https://issues.apache.org/jira/browse/YARN-4026) | FiCaSchedulerApp: ContainerAllocator should be able to choose how to order pending resource requests |  Major | . | Wangda Tan | Wangda Tan |
+| [HDFS-8879](https://issues.apache.org/jira/browse/HDFS-8879) | Quota by storage type usage incorrectly initialized upon namenode restart |  Major | namenode | Kihwal Lee | Xiaoyu Yao |
+| [HADOOP-12258](https://issues.apache.org/jira/browse/HADOOP-12258) | Need translate java.nio.file.NoSuchFileException to FileNotFoundException to avoid regression |  Critical | fs | zhihai xu | zhihai xu |
+| [YARN-4005](https://issues.apache.org/jira/browse/YARN-4005) | Completed container whose app is finished is not removed from NMStateStore |  Major | . | Jun Gong | Jun Gong |
+| [YARN-4047](https://issues.apache.org/jira/browse/YARN-4047) | ClientRMService getApplications has high scheduler lock contention |  Major | resourcemanager | Jason Lowe | Jason Lowe |
+| [YARN-3987](https://issues.apache.org/jira/browse/YARN-3987) | am container complete msg ack to NM once RM receive it |  Major | resourcemanager | sandflee | sandflee |
+| [HADOOP-12322](https://issues.apache.org/jira/browse/HADOOP-12322) | typos in rpcmetrics.java |  Trivial | ipc | Anu Engineer | Anu Engineer |
+| [HDFS-8565](https://issues.apache.org/jira/browse/HDFS-8565) | Typo in dfshealth.html - "Decomissioning" |  Trivial | . | nijel | nijel |
+| [MAPREDUCE-5817](https://issues.apache.org/jira/browse/MAPREDUCE-5817) | Mappers get rescheduled on node transition even after all reducers are completed |  Major | applicationmaster | Sangjin Lee | Sangjin Lee |
+| [HDFS-8891](https://issues.apache.org/jira/browse/HDFS-8891) | HDFS concat should keep srcs order |  Blocker | . | Yong Zhang | Yong Zhang |
+| [MAPREDUCE-6439](https://issues.apache.org/jira/browse/MAPREDUCE-6439) | AM may fail instead of retrying if RM shuts down during the allocate call |  Critical | . | Anubhav Dhoot | Anubhav Dhoot |
+| [HDFS-8845](https://issues.apache.org/jira/browse/HDFS-8845) | DiskChecker should not traverse the entire tree |  Major | . | Chang Li | Chang Li |
+| [HDFS-8852](https://issues.apache.org/jira/browse/HDFS-8852) | HDFS architecture documentation of version 2.x is outdated about append write support |  Major | documentation | Hong Dai Thanh | Ajith S |
+| [YARN-3857](https://issues.apache.org/jira/browse/YARN-3857) | Memory leak in ResourceManager with SIMPLE mode |  Critical | resourcemanager | mujunchao | mujunchao |
+| [YARN-4028](https://issues.apache.org/jira/browse/YARN-4028) | AppBlock page key update and diagnostics value null on recovery |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-8908](https://issues.apache.org/jira/browse/HDFS-8908) | TestAppendSnapshotTruncate may fail with IOException: Failed to replace a bad datanode |  Minor | test | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8867](https://issues.apache.org/jira/browse/HDFS-8867) | Enable optimized block reports |  Major | . | Rushabh S Shah | Daryn Sharp |
+| [HADOOP-12317](https://issues.apache.org/jira/browse/HADOOP-12317) | Applications fail on NM restart on some linux distro because NM container recovery declares AM container as LOST |  Critical | . | Anubhav Dhoot | Anubhav Dhoot |
+| [HDFS-8863](https://issues.apache.org/jira/browse/HDFS-8863) | The remaining space check in BlockPlacementPolicyDefault is flawed |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8922](https://issues.apache.org/jira/browse/HDFS-8922) | Link the native\_mini\_dfs test library with libdl, since IBM Java requires it |  Major | build | Ayappan | Ayappan |
+| [HDFS-8809](https://issues.apache.org/jira/browse/HDFS-8809) | HDFS fsck reports under construction blocks as "CORRUPT" |  Major | tools | Sudhir Prakash | Jing Zhao |
+| [MAPREDUCE-6454](https://issues.apache.org/jira/browse/MAPREDUCE-6454) | MapReduce doesn't set the HADOOP\_CLASSPATH for jar lib in distributed cache. |  Critical | . | Junping Du | Junping Du |
+| [MAPREDUCE-6357](https://issues.apache.org/jira/browse/MAPREDUCE-6357) | MultipleOutputs.write() API should document that output committing is not utilized when input path is absolute |  Major | documentation | Ivan Mitic | Dustin Cote |
+| [YARN-3986](https://issues.apache.org/jira/browse/YARN-3986) | getTransferredContainers in AbstractYarnScheduler should be present in YarnScheduler interface instead |  Major | scheduler | Varun Saxena | Varun Saxena |
+| [HADOOP-12347](https://issues.apache.org/jira/browse/HADOOP-12347) | Fix mismatch parameter name in javadocs of AuthToken#setMaxInactives |  Trivial | . | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-8942](https://issues.apache.org/jira/browse/HDFS-8942) | Update hyperlink to rack awareness page in HDFS Architecture documentation |  Trivial | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-3896](https://issues.apache.org/jira/browse/YARN-3896) | RMNode transitioned from RUNNING to REBOOTED because its response id had not been reset synchronously |  Major | resourcemanager | Jun Gong | Jun Gong |
+| [HDFS-8930](https://issues.apache.org/jira/browse/HDFS-8930) | Block report lease may leak if the 2nd full block report comes when NN is still in safemode |  Minor | . | Jing Zhao | Jing Zhao |
+| [HDFS-8932](https://issues.apache.org/jira/browse/HDFS-8932) | NPE thrown in NameNode when try to get "TotalSyncCount" metric before editLogStream initialization |  Major | . | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HADOOP-12352](https://issues.apache.org/jira/browse/HADOOP-12352) | Delay in checkpointing Trash can leave trash for 2 intervals before deleting |  Trivial | trash | Casey Brotherton | Casey Brotherton |
+| [HDFS-8846](https://issues.apache.org/jira/browse/HDFS-8846) | Add a unit test for INotify functionality across a layout version upgrade |  Major | namenode | Zhe Zhang | Zhe Zhang |
+| [HDFS-8896](https://issues.apache.org/jira/browse/HDFS-8896) | DataNode object isn't GCed when shutdown, because it has GC root in ShutdownHookManager |  Minor | test | Walter Su | Walter Su |
+| [HDFS-8961](https://issues.apache.org/jira/browse/HDFS-8961) | Surpress findbug warnings of o.a.h.hdfs.shortcircuit.DfsClientShmManager.EndpointShmManager in hdfs-client |  Major | . | Haohui Mai | Mingliang Liu |
+| [HADOOP-12362](https://issues.apache.org/jira/browse/HADOOP-12362) | Set hadoop.tmp.dir and hadoop.log.dir in pom |  Major | . | Charlie Helin | Charlie Helin |
+| [HDFS-8969](https://issues.apache.org/jira/browse/HDFS-8969) | Clean up findbugs warnings for HDFS-8823 and HDFS-8932 |  Major | namenode | Anu Engineer | Anu Engineer |
+| [HDFS-8963](https://issues.apache.org/jira/browse/HDFS-8963) | Fix incorrect sign extension of xattr length in HDFS-8900 |  Critical | . | Haohui Mai | Colin P. McCabe |
+| [YARN-1556](https://issues.apache.org/jira/browse/YARN-1556) | NPE getting application report with a null appId |  Minor | client | Steve Loughran | Weiwei Yang |
+| [MAPREDUCE-6452](https://issues.apache.org/jira/browse/MAPREDUCE-6452) | NPE when intermediate encrypt enabled for LocalRunner |  Major | . | Bibin A Chundatt | zhihai xu |
+| [HDFS-8950](https://issues.apache.org/jira/browse/HDFS-8950) | NameNode refresh doesn't remove DataNodes that are no longer in the allowed list |  Major | datanode, namenode | Daniel Templeton | Daniel Templeton |
+| [HADOOP-12346](https://issues.apache.org/jira/browse/HADOOP-12346) | Increase some default timeouts / retries for S3a connector |  Major | fs/s3 | Sean Mackrory | Sean Mackrory |
+| [HADOOP-12359](https://issues.apache.org/jira/browse/HADOOP-12359) | hadoop fs -getmerge doc is wrong |  Major | documentation | Daniel Templeton | Jagadesh Kiran N |
+| [HADOOP-10365](https://issues.apache.org/jira/browse/HADOOP-10365) | BufferedOutputStream in FileUtil#unpackEntries() should be closed in finally block |  Minor | util | Ted Yu | Kiran Kumar M R |
+| [HDFS-8995](https://issues.apache.org/jira/browse/HDFS-8995) | Flaw in registration bookeeping can make DN die on reconnect |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8388](https://issues.apache.org/jira/browse/HDFS-8388) | Time and Date format need to be in sync in NameNode UI page |  Minor | . | Archana T | Surendra Singh Lilhore |
+| [YARN-4073](https://issues.apache.org/jira/browse/YARN-4073) | Unused ApplicationACLsManager in ContainerManagerImpl |  Trivial | . | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-9003](https://issues.apache.org/jira/browse/HDFS-9003) | ForkJoin thread pool leaks |  Major | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8885](https://issues.apache.org/jira/browse/HDFS-8885) | ByteRangeInputStream used in webhdfs does not override available() |  Minor | webhdfs | Shradha Revankar | Shradha Revankar |
+| [HADOOP-10318](https://issues.apache.org/jira/browse/HADOOP-10318) | Incorrect reference to nodeFile in RumenToSLSConverter error message |  Minor | . | Ted Yu | Wei Yan |
+| [HADOOP-12213](https://issues.apache.org/jira/browse/HADOOP-12213) | Interrupted exception can occur when Client#stop is called |  Minor | . | Oleg Zhurakousky | Kuhu Shukla |
+| [HDFS-9009](https://issues.apache.org/jira/browse/HDFS-9009) | Send metrics logs to NullAppender by default |  Major | logging | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8964](https://issues.apache.org/jira/browse/HDFS-8964) | When validating the edit log, do not read at or beyond the file offset that is being written |  Major | journal-node, namenode | Zhe Zhang | Zhe Zhang |
+| [HDFS-8939](https://issues.apache.org/jira/browse/HDFS-8939) | Test(S)WebHdfsFileContextMainOperations failing on branch-2 |  Major | webhdfs | Jakob Homan | Chris Nauroth |
+| [YARN-4103](https://issues.apache.org/jira/browse/YARN-4103) | RM WebServices missing scheme for appattempts logLinks |  Major | . | Jonathan Eagles | Jonathan Eagles |
+| [YARN-4105](https://issues.apache.org/jira/browse/YARN-4105) | Capacity Scheduler headroom for DRF is wrong |  Major | capacityscheduler | Chang Li | Chang Li |
+| [MAPREDUCE-6442](https://issues.apache.org/jira/browse/MAPREDUCE-6442) | Stack trace is missing when error occurs in client protocol provider's constructor |  Major | client | Chang Li | Chang Li |
+| [YARN-3591](https://issues.apache.org/jira/browse/YARN-3591) | Resource localization on a bad disk causes subsequent containers failure |  Major | . | Lavkesh Lahngir | Lavkesh Lahngir |
+| [YARN-4121](https://issues.apache.org/jira/browse/YARN-4121) | Typos in capacity scheduler documentation. |  Trivial | documentation | Kai Sasaki | Kai Sasaki |
+| [YARN-4096](https://issues.apache.org/jira/browse/YARN-4096) | App local logs are leaked if log aggregation fails to initialize for the app |  Major | log-aggregation, nodemanager | Jason Lowe | Jason Lowe |
+| [HADOOP-12388](https://issues.apache.org/jira/browse/HADOOP-12388) | Fix components' version information in the web page 'About the Cluster' |  Minor | util | Jun Gong | Jun Gong |
+| [HDFS-9033](https://issues.apache.org/jira/browse/HDFS-9033) | dfsadmin -metasave prints "NaN" for cache used% |  Major | . | Archana T | Brahma Reddy Battula |
+| [HDFS-8716](https://issues.apache.org/jira/browse/HDFS-8716) | introduce a new config specifically for safe mode block count |  Major | . | Chang Li | Chang Li |
+| [HDFS-8581](https://issues.apache.org/jira/browse/HDFS-8581) | ContentSummary on / skips further counts on yielding lock |  Minor | namenode | tongshiquan | J.Andreina |
+| [HDFS-6763](https://issues.apache.org/jira/browse/HDFS-6763) | Initialize file system-wide quota once on transitioning to active |  Major | ha, namenode | Daryn Sharp | Kihwal Lee |
+| [MAPREDUCE-6474](https://issues.apache.org/jira/browse/MAPREDUCE-6474) | ShuffleHandler can possibly exhaust nodemanager file descriptors |  Major | mrv2, nodemanager | Nathan Roberts | Kuhu Shukla |
+| [YARN-4106](https://issues.apache.org/jira/browse/YARN-4106) | NodeLabels for NM in distributed mode is not updated even after clusterNodelabel addition in RM |  Major | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-4115](https://issues.apache.org/jira/browse/YARN-4115) | Reduce loglevel of ContainerManagementProtocolProxy to Debug |  Minor | . | Anubhav Dhoot | Anubhav Dhoot |
+| [HADOOP-12348](https://issues.apache.org/jira/browse/HADOOP-12348) | MetricsSystemImpl creates MetricsSourceAdapter with wrong time unit parameter. |  Major | metrics | zhihai xu | zhihai xu |
+| [HDFS-9042](https://issues.apache.org/jira/browse/HDFS-9042) | Update document for the Storage policy name |  Minor | documentation | J.Andreina | J.Andreina |
+| [HDFS-9036](https://issues.apache.org/jira/browse/HDFS-9036) | In BlockPlacementPolicyWithNodeGroup#chooseLocalStorage , random node is selected eventhough fallbackToLocalRack is true. |  Major | . | J.Andreina | J.Andreina |
+| [HADOOP-12407](https://issues.apache.org/jira/browse/HADOOP-12407) | Test failing: hadoop.ipc.TestSaslRPC |  Critical | security, test | Steve Loughran | Steve Loughran |
+| [HADOOP-12087](https://issues.apache.org/jira/browse/HADOOP-12087) | [JDK8] Fix javadoc errors caused by incorrect or illegal tags |  Major | documentation | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-9069](https://issues.apache.org/jira/browse/HDFS-9069) | TestNameNodeMetricsLogger failing -port in use |  Critical | test | Steve Loughran | Steve Loughran |
+| [HDFS-8996](https://issues.apache.org/jira/browse/HDFS-8996) | Consolidate validateLog and scanLog in FJM#EditLogFile |  Major | journal-node, namenode | Zhe Zhang | Zhe Zhang |
+| [YARN-4151](https://issues.apache.org/jira/browse/YARN-4151) | Fix findbugs errors in hadoop-yarn-server-common module |  Major | . | MENG DING | MENG DING |
+| [HDFS-9067](https://issues.apache.org/jira/browse/HDFS-9067) | o.a.h.hdfs.server.datanode.fsdataset.impl.TestLazyWriter is failing in trunk |  Critical | . | Haohui Mai | Surendra Singh Lilhore |
+| [MAPREDUCE-6472](https://issues.apache.org/jira/browse/MAPREDUCE-6472) | MapReduce AM should have java.io.tmpdir=./tmp to be consistent with tasks |  Major | mr-am | Jason Lowe | Naganarasimha G R |
+| [HADOOP-12374](https://issues.apache.org/jira/browse/HADOOP-12374) | Description of hdfs expunge command is confusing |  Major | documentation, trash | Weiwei Yang | Weiwei Yang |
+| [YARN-4078](https://issues.apache.org/jira/browse/YARN-4078) | getPendingResourceRequestForAttempt is present in AbstractYarnScheduler should be present in YarnScheduler interface instead |  Minor | resourcemanager | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-9072](https://issues.apache.org/jira/browse/HDFS-9072) | Fix random failures in TestJMXGet |  Critical | test | J.Andreina | J.Andreina |
+| [HDFS-9073](https://issues.apache.org/jira/browse/HDFS-9073) | Fix failures in TestLazyPersistLockedMemory#testReleaseOnEviction |  Critical | test | J.Andreina | J.Andreina |
+| [YARN-3433](https://issues.apache.org/jira/browse/YARN-3433) | Jersey tests failing with Port in Use -again |  Critical | build, test | Steve Loughran | Brahma Reddy Battula |
+| [HADOOP-12417](https://issues.apache.org/jira/browse/HADOOP-12417) | TestWebDelegationToken failing with port in use |  Major | test | Steve Loughran | Mingliang Liu |
+| [MAPREDUCE-6481](https://issues.apache.org/jira/browse/MAPREDUCE-6481) | LineRecordReader may give incomplete record and wrong position/key information for uncompressed input sometimes. |  Critical | mrv2 | zhihai xu | zhihai xu |
+| [MAPREDUCE-5002](https://issues.apache.org/jira/browse/MAPREDUCE-5002) | AM could potentially allocate a reduce container to a map attempt |  Major | mr-am | Jason Lowe | Chang Li |
+| [MAPREDUCE-5982](https://issues.apache.org/jira/browse/MAPREDUCE-5982) | Task attempts that fail from the ASSIGNED state can disappear |  Major | mr-am | Jason Lowe | Chang Li |
+| [HADOOP-12386](https://issues.apache.org/jira/browse/HADOOP-12386) | RetryPolicies.RETRY\_FOREVER should be able to specify a retry interval |  Major | . | Wangda Tan | Sunil G |
+| [YARN-3697](https://issues.apache.org/jira/browse/YARN-3697) | FairScheduler: ContinuousSchedulingThread can fail to shutdown |  Critical | fairscheduler | zhihai xu | zhihai xu |
+| [HDFS-6955](https://issues.apache.org/jira/browse/HDFS-6955) | DN should reserve disk space for a full block when creating tmp files |  Major | datanode | Arpit Agarwal | Kanaka Kumar Avvaru |
+| [HDFS-5802](https://issues.apache.org/jira/browse/HDFS-5802) | NameNode does not check for inode type before traversing down a path |  Trivial | namenode | Harsh J | Xiao Chen |
+| [MAPREDUCE-6460](https://issues.apache.org/jira/browse/MAPREDUCE-6460) | TestRMContainerAllocator.testAttemptNotFoundCausesRMCommunicatorException fails |  Major | test | zhihai xu | zhihai xu |
+| [YARN-4167](https://issues.apache.org/jira/browse/YARN-4167) | NPE on RMActiveServices#serviceStop when store is null |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-4113](https://issues.apache.org/jira/browse/YARN-4113) | RM should respect retry-interval when uses RetryPolicies.RETRY\_FOREVER |  Critical | . | Wangda Tan | Sunil G |
+| [YARN-4188](https://issues.apache.org/jira/browse/YARN-4188) | MoveApplicationAcrossQueuesResponse should be an abstract class |  Minor | resourcemanager | Giovanni Matteo Fumarola | Giovanni Matteo Fumarola |
+| [HDFS-9043](https://issues.apache.org/jira/browse/HDFS-9043) | Doc updation for commands in HDFS Federation |  Minor | documentation | J.Andreina | J.Andreina |
+| [HDFS-9013](https://issues.apache.org/jira/browse/HDFS-9013) | Deprecate NameNodeMXBean#getNNStarted in branch2 and remove from trunk |  Major | namenode | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [YARN-3975](https://issues.apache.org/jira/browse/YARN-3975) | WebAppProxyServlet should not redirect to RM page if AHS is enabled |  Major | . | Mit Desai | Mit Desai |
+| [HADOOP-12438](https://issues.apache.org/jira/browse/HADOOP-12438) | Reset RawLocalFileSystem.useDeprecatedFileStatus in TestLocalFileSystem |  Trivial | test | Chris Nauroth | Chris Nauroth |
+| [HDFS-9128](https://issues.apache.org/jira/browse/HDFS-9128) | TestWebHdfsFileContextMainOperations and TestSWebHdfsFileContextMainOperations fail due to invalid HDFS path on Windows. |  Trivial | test | Chris Nauroth | Chris Nauroth |
+| [YARN-4152](https://issues.apache.org/jira/browse/YARN-4152) | NM crash with NPE when LogAggregationService#stopContainer called for absent container |  Critical | log-aggregation, nodemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-4044](https://issues.apache.org/jira/browse/YARN-4044) | Running applications information changes such as movequeue is not published to TimeLine server |  Critical | resourcemanager, timelineserver | Sunil G | Sunil G |
+| [HDFS-9076](https://issues.apache.org/jira/browse/HDFS-9076) | Log full path instead of inodeId in DFSClient#closeAllFilesBeingWritten() |  Major | hdfs-client | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [MAPREDUCE-6484](https://issues.apache.org/jira/browse/MAPREDUCE-6484) | Yarn Client uses local address instead of RM address as token renewer in a secure cluster when RM HA is enabled. |  Major | client, security | zhihai xu | zhihai xu |
+| [HADOOP-12437](https://issues.apache.org/jira/browse/HADOOP-12437) | Allow SecurityUtil to lookup alternate hostnames |  Major | net, security | Arpit Agarwal | Arpit Agarwal |
+| [HADOOP-12252](https://issues.apache.org/jira/browse/HADOOP-12252) | LocalDirAllocator should not throw NPE with empty string configuration. |  Minor | fs | zhihai xu | zhihai xu |
+| [YARN-3624](https://issues.apache.org/jira/browse/YARN-3624) | ApplicationHistoryServer reverses the order of the filters it gets |  Major | timelineserver | Mit Desai | Mit Desai |
+| [HDFS-9123](https://issues.apache.org/jira/browse/HDFS-9123) | Copying from the root to a subdirectory should be forbidden |  Minor | fs | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [MAPREDUCE-6480](https://issues.apache.org/jira/browse/MAPREDUCE-6480) | archive-logs tool may miss applications |  Major | . | Robert Kanter | Robert Kanter |
+| [HDFS-9107](https://issues.apache.org/jira/browse/HDFS-9107) | Prevent NN's unrecoverable death spiral after full GC |  Critical | namenode | Daryn Sharp | Daryn Sharp |
+| [HDFS-9133](https://issues.apache.org/jira/browse/HDFS-9133) | ExternalBlockReader and ReplicaAccessor need to return -1 on read when at EOF |  Major | hdfs-client | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-9080](https://issues.apache.org/jira/browse/HDFS-9080) | update htrace version to 4.0.1 |  Major | tracing | Colin P. McCabe | Colin P. McCabe |
+| [YARN-4204](https://issues.apache.org/jira/browse/YARN-4204) | ConcurrentModificationException in FairSchedulerQueueInfo |  Major | . | Anubhav Dhoot | Anubhav Dhoot |
+| [HDFS-9106](https://issues.apache.org/jira/browse/HDFS-9106) | Transfer failure during pipeline recovery causes permanent write failures |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-9147](https://issues.apache.org/jira/browse/HDFS-9147) | Fix the setting of visibleLength in ExternalBlockReader |  Major | hdfs-client | Colin P. McCabe | Colin P. McCabe |
+| [MAPREDUCE-6492](https://issues.apache.org/jira/browse/MAPREDUCE-6492) | AsyncDispatcher exit with NPE on TaskAttemptImpl#sendJHStartEventForAssignedFailTask |  Critical | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HADOOP-12440](https://issues.apache.org/jira/browse/HADOOP-12440) | TestRPC#testRPCServerShutdown did not produce the desired thread states before shutting down |  Minor | . | Xiao Chen | Xiao Chen |
+| [HDFS-9092](https://issues.apache.org/jira/browse/HDFS-9092) | Nfs silently drops overlapping write requests and causes data copying to fail |  Major | nfs | Yongjun Zhang | Yongjun Zhang |
+| [YARN-4180](https://issues.apache.org/jira/browse/YARN-4180) | AMLauncher does not retry on failures when talking to NM |  Critical | resourcemanager | Anubhav Dhoot | Anubhav Dhoot |
+| [HDFS-9141](https://issues.apache.org/jira/browse/HDFS-9141) | Thread leak in Datanode#refreshVolumes |  Major | datanode | Uma Maheswara Rao G | Uma Maheswara Rao G |
+| [YARN-4066](https://issues.apache.org/jira/browse/YARN-4066) | Large number of queues choke fair scheduler |  Major | fairscheduler | Johan Gustavsson | Johan Gustavsson |
+| [HADOOP-12447](https://issues.apache.org/jira/browse/HADOOP-12447) | Clean up some htrace integration issues |  Major | tracing | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-9174](https://issues.apache.org/jira/browse/HDFS-9174) | Fix findbugs warnings in FSOutputSummer.tracer and DirectoryScanner$ReportCompiler.currentThread |  Critical | . | Yi Liu | Yi Liu |
+| [HDFS-9001](https://issues.apache.org/jira/browse/HDFS-9001) | DFSUtil.getNsServiceRpcUris() can return too many entries in a non-HA, non-federated cluster |  Major | . | Daniel Templeton | Daniel Templeton |
+| [HADOOP-12448](https://issues.apache.org/jira/browse/HADOOP-12448) | TestTextCommand: use mkdirs rather than mkdir to create test directory |  Major | test | Colin P. McCabe | Colin P. McCabe |
+| [MAPREDUCE-6494](https://issues.apache.org/jira/browse/MAPREDUCE-6494) | Permission issue when running archive-logs tool as different users |  Major | . | Robert Kanter | Robert Kanter |
+| [MAPREDUCE-6497](https://issues.apache.org/jira/browse/MAPREDUCE-6497) | Fix wrong value of JOB\_FINISHED event in JobHistoryEventHandler |  Major | . | Shinichi Yamashita | Shinichi Yamashita |
+| [HADOOP-10296](https://issues.apache.org/jira/browse/HADOOP-10296) | Incorrect null check in SwiftRestClient#buildException() |  Minor | . | Ted Yu | Kanaka Kumar Avvaru |
+| [HADOOP-8437](https://issues.apache.org/jira/browse/HADOOP-8437) | getLocalPathForWrite should throw IOException for invalid paths |  Major | fs | Brahma Reddy Battula | Brahma Reddy Battula |
+| [MAPREDUCE-6485](https://issues.apache.org/jira/browse/MAPREDUCE-6485) | MR job hanged forever because all resources are taken up by reducers and the last map attempt never get resource to run |  Critical | applicationmaster | Bob.zhao | Xianyin Xin |
+| [HDFS-9191](https://issues.apache.org/jira/browse/HDFS-9191) | Typo in  Hdfs.java.  NoSuchElementException is misspelled |  Trivial | documentation | Catherine Palmer | Catherine Palmer |
+| [HDFS-9100](https://issues.apache.org/jira/browse/HDFS-9100) | HDFS Balancer does not respect dfs.client.use.datanode.hostname |  Major | balancer & mover | Yongjun Zhang | Casey Brotherton |
+| [YARN-3619](https://issues.apache.org/jira/browse/YARN-3619) | ContainerMetrics unregisters during getMetrics and leads to ConcurrentModificationException |  Major | nodemanager | Jason Lowe | zhihai xu |
+| [HDFS-9193](https://issues.apache.org/jira/browse/HDFS-9193) | Fix incorrect references the usages of the DN in dfshealth.js |  Minor | . | Chang Li | Chang Li |
+| [HADOOP-11098](https://issues.apache.org/jira/browse/HADOOP-11098) | [JDK8] Max Non Heap Memory default changed between JDK7 and 8 |  Major | . | Travis Thompson | Tsuyoshi Ozawa |
+| [HADOOP-12441](https://issues.apache.org/jira/browse/HADOOP-12441) | Fix kill command behavior under some Linux distributions. |  Critical | . | Wangda Tan | Wangda Tan |
+| [HADOOP-12452](https://issues.apache.org/jira/browse/HADOOP-12452) | Fix tracing documention reflecting the update to htrace-4 |  Major | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-4176](https://issues.apache.org/jira/browse/YARN-4176) | Resync NM nodelabels with RM periodically for distributed nodelabels |  Major | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-7899](https://issues.apache.org/jira/browse/HDFS-7899) | Improve EOF error message |  Minor | hdfs-client | Harsh J | Jagadesh Kiran N |
+| [MAPREDUCE-6503](https://issues.apache.org/jira/browse/MAPREDUCE-6503) | archive-logs tool should use HADOOP\_PREFIX instead of HADOOP\_HOME |  Major | . | Robert Kanter | Robert Kanter |
+| [YARN-4209](https://issues.apache.org/jira/browse/YARN-4209) | RMStateStore FENCED state doesn't work due to updateFencedState called by stateMachine.doTransition |  Critical | resourcemanager | zhihai xu | zhihai xu |
+| [HDFS-9196](https://issues.apache.org/jira/browse/HDFS-9196) | Fix TestWebHdfsContentLength |  Major | . | Tsuyoshi Ozawa | Masatake Iwasaki |
+| [HDFS-9178](https://issues.apache.org/jira/browse/HDFS-9178) | Slow datanode I/O can cause a wrong node to be marked bad |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HADOOP-12465](https://issues.apache.org/jira/browse/HADOOP-12465) | Incorrect javadoc in WritableUtils.java |  Minor | documentation | Martin Petricek | Jagadesh Kiran N |
+| [HDFS-9176](https://issues.apache.org/jira/browse/HDFS-9176) | TestDirectoryScanner#testThrottling often fails. |  Minor | test | Yi Liu | Daniel Templeton |
+| [HDFS-9211](https://issues.apache.org/jira/browse/HDFS-9211) | Fix incorrect version in hadoop-hdfs-native-client/pom.xml from HDFS-9170 branch-2 backport |  Major | build | Eric Payne | Eric Payne |
+| [HDFS-9137](https://issues.apache.org/jira/browse/HDFS-9137) | DeadLock between DataNode#refreshVolumes and BPOfferService#registrationSucceeded |  Major | datanode | Uma Maheswara Rao G | Uma Maheswara Rao G |
+| [HDFS-8164](https://issues.apache.org/jira/browse/HDFS-8164) | cTime is 0 in VERSION file for newly formatted NameNode. |  Minor | namenode | Chris Nauroth | Xiao Chen |
+| [YARN-4235](https://issues.apache.org/jira/browse/YARN-4235) | FairScheduler PrimaryGroup does not handle empty groups returned for a user |  Major | fairscheduler | Anubhav Dhoot | Anubhav Dhoot |
+| [MAPREDUCE-6302](https://issues.apache.org/jira/browse/MAPREDUCE-6302) | Preempt reducers after a configurable timeout irrespective of headroom |  Critical | . | mai shurong | Karthik Kambatla |
+| [HDFS-9142](https://issues.apache.org/jira/browse/HDFS-9142) | Separating Configuration object for namenode(s) in MiniDFSCluster |  Major | . | Siqi Li | Siqi Li |
+| [HDFS-8941](https://issues.apache.org/jira/browse/HDFS-8941) | DistributedFileSystem listCorruptFileBlocks API should resolve relative path |  Major | hdfs-client | Rakesh R | Rakesh R |
+| [HDFS-9222](https://issues.apache.org/jira/browse/HDFS-9222) | Add hadoop-hdfs-client as a dependency of hadoop-hdfs-native-client |  Major | . | Haohui Mai | Mingliang Liu |
+| [YARN-4201](https://issues.apache.org/jira/browse/YARN-4201) | AMBlacklist does not work for minicluster |  Major | resourcemanager | Jun Gong | Jun Gong |
+| [HDFS-9215](https://issues.apache.org/jira/browse/HDFS-9215) | Suppress the RAT warnings in hdfs-native-client module |  Minor | . | Haohui Mai | Haohui Mai |
+| [HDFS-9224](https://issues.apache.org/jira/browse/HDFS-9224) | TestFileTruncate fails intermittently with BindException |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4017](https://issues.apache.org/jira/browse/YARN-4017) | container-executor overuses PATH\_MAX |  Major | nodemanager | Allen Wittenauer | Sidharta Seethana |
+| [HDFS-8676](https://issues.apache.org/jira/browse/HDFS-8676) | Delayed rolling upgrade finalization can cause heartbeat expiration and write failures |  Critical | . | Kihwal Lee | Walter Su |
+| [HADOOP-12474](https://issues.apache.org/jira/browse/HADOOP-12474) | MiniKMS should use random ports for Jetty server by default |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HADOOP-12449](https://issues.apache.org/jira/browse/HADOOP-12449) | TestDNS and TestNetUtils failing if no network |  Minor | test | Steve Loughran | Steve Loughran |
+| [HADOOP-11515](https://issues.apache.org/jira/browse/HADOOP-11515) | Upgrade jsch lib to jsch-0.1.51 to avoid problems running on java7 |  Major | build | Johannes Zillmann | Tsuyoshi Ozawa |
+| [HDFS-9235](https://issues.apache.org/jira/browse/HDFS-9235) | hdfs-native-client build getting errors when built with cmake 2.6 |  Minor | hdfs-client | Eric Payne | Eric Payne |
+| [HDFS-8779](https://issues.apache.org/jira/browse/HDFS-8779) | WebUI fails to display block IDs that are larger than 2^53 - 1 |  Minor | webhdfs | Walter Su | Haohui Mai |
+| [HDFS-9187](https://issues.apache.org/jira/browse/HDFS-9187) | Fix null pointer error in Globber when FS was not constructed via FileSystem#createFileSystem |  Major | tracing | stack | Colin P. McCabe |
+| [HDFS-1172](https://issues.apache.org/jira/browse/HDFS-1172) | Blocks in newly completed files are considered under-replicated too quickly |  Major | namenode | Todd Lipcon | Masatake Iwasaki |
+| [YARN-4250](https://issues.apache.org/jira/browse/YARN-4250) | NPE in AppSchedulingInfo#isRequestLabelChanged |  Major | resourcemanager, scheduler | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12478](https://issues.apache.org/jira/browse/HADOOP-12478) | Shell.getWinUtilsPath()  has been renamed Shell.getWinutilsPath() |  Critical | util | Steve Loughran | Steve Loughran |
+| [HDFS-9220](https://issues.apache.org/jira/browse/HDFS-9220) | Reading small file (\< 512 bytes) that is open for append fails due to incorrect checksum |  Blocker | . | Bogdan Raducanu | Jing Zhao |
+| [HADOOP-12479](https://issues.apache.org/jira/browse/HADOOP-12479) | ProtocMojo does not log the reason for a protoc compilation failure. |  Minor | build | Chris Nauroth | Chris Nauroth |
+| [HADOOP-11628](https://issues.apache.org/jira/browse/HADOOP-11628) | SPNEGO auth does not work with CNAMEs in JDK8 |  Blocker | security | Daryn Sharp | Daryn Sharp |
+| [YARN-2597](https://issues.apache.org/jira/browse/YARN-2597) | MiniYARNCluster should propagate reason for AHS not starting |  Major | test | Steve Loughran | Steve Loughran |
+| [YARN-4155](https://issues.apache.org/jira/browse/YARN-4155) | TestLogAggregationService.testLogAggregationServiceWithInterval failing |  Critical | test | Steve Loughran | Bibin A Chundatt |
+| [HADOOP-10941](https://issues.apache.org/jira/browse/HADOOP-10941) | Proxy user verification NPEs if remote host is unresolvable |  Critical | ipc, security | Daryn Sharp | Benoy Antony |
+| [HADOOP-12483](https://issues.apache.org/jira/browse/HADOOP-12483) | Maintain wrapped SASL ordering for postponed IPC responses |  Critical | ipc | Daryn Sharp | Daryn Sharp |
+| [HDFS-9237](https://issues.apache.org/jira/browse/HDFS-9237) | NPE at TestDataNodeVolumeFailureToleration#tearDown |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12464](https://issues.apache.org/jira/browse/HADOOP-12464) | Interrupted client may try to fail-over and retry |  Major | ipc | Kihwal Lee | Kihwal Lee |
+| [YARN-4270](https://issues.apache.org/jira/browse/YARN-4270) | Limit application resource reservation on nodes for non-node/rack specific requests |  Major | fairscheduler | Arun Suresh | Arun Suresh |
+| [HDFS-9208](https://issues.apache.org/jira/browse/HDFS-9208) | Disabling atime may fail clients like distCp |  Major | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-9270](https://issues.apache.org/jira/browse/HDFS-9270) | TestShortCircuitLocalRead should not leave socket after unit test |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-12418](https://issues.apache.org/jira/browse/HADOOP-12418) | TestRPC.testRPCInterruptedSimple fails intermittently |  Major | test | Steve Loughran | Kihwal Lee |
+| [MAPREDUCE-6495](https://issues.apache.org/jira/browse/MAPREDUCE-6495) | Docs for archive-logs tool |  Major | documentation | Robert Kanter | Robert Kanter |
+| [HDFS-3059](https://issues.apache.org/jira/browse/HDFS-3059) | ssl-server.xml causes NullPointer |  Minor | datanode, security | Evert Lammerts | Xiao Chen |
+| [HDFS-9274](https://issues.apache.org/jira/browse/HDFS-9274) | Default value of dfs.datanode.directoryscan.throttle.limit.ms.per.sec should be consistent |  Trivial | datanode | Yi Liu | Yi Liu |
+| [MAPREDUCE-6518](https://issues.apache.org/jira/browse/MAPREDUCE-6518) | Set SO\_KEEPALIVE on shuffle connections |  Major | mrv2, nodemanager | Nathan Roberts | Chang Li |
+| [HDFS-9225](https://issues.apache.org/jira/browse/HDFS-9225) | Fix intermittent test failure of TestBlockManager.testBlocksAreNotUnderreplicatedInSingleRack |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-9273](https://issues.apache.org/jira/browse/HDFS-9273) | ACLs on root directory may be lost after NN restart |  Critical | namenode | Xiao Chen | Xiao Chen |
+| [YARN-4000](https://issues.apache.org/jira/browse/YARN-4000) | RM crashes with NPE if leaf queue becomes parent queue during restart |  Major | capacityscheduler, resourcemanager | Jason Lowe | Varun Saxena |
+| [HADOOP-9692](https://issues.apache.org/jira/browse/HADOOP-9692) | Improving log message when SequenceFile reader throws EOFException on zero-length file |  Major | . | Chu Tong | Zhe Zhang |
+| [YARN-4256](https://issues.apache.org/jira/browse/YARN-4256) | YARN fair scheduler vcores with decimal values |  Minor | fairscheduler | Prabhu Joseph | Jun Gong |
+| [HADOOP-12484](https://issues.apache.org/jira/browse/HADOOP-12484) | Single File Rename Throws Incorrectly In Potential Race Condition Scenarios |  Major | tools | Gaurav Kanade | Gaurav Kanade |
+| [HDFS-9286](https://issues.apache.org/jira/browse/HDFS-9286) | HttpFs does not parse ACL syntax correctly for operation REMOVEACLENTRIES |  Major | fs | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4009](https://issues.apache.org/jira/browse/YARN-4009) | CORS support for ResourceManager REST API |  Major | . | Prakash Ramachandran | Varun Vasudev |
+| [YARN-4041](https://issues.apache.org/jira/browse/YARN-4041) | Slow delegation token renewal can severely prolong RM recovery |  Major | resourcemanager | Jason Lowe | Sunil G |
+| [HDFS-9290](https://issues.apache.org/jira/browse/HDFS-9290) | DFSClient#callAppend() is not backward compatible for slightly older NameNodes |  Blocker | . | Tony Wu | Tony Wu |
+| [HDFS-9301](https://issues.apache.org/jira/browse/HDFS-9301) | HDFS clients can't construct HdfsConfiguration instances |  Major | . | Steve Loughran | Mingliang Liu |
+| [YARN-4294](https://issues.apache.org/jira/browse/YARN-4294) | [JDK8] Fix javadoc errors caused by wrong reference and illegal tag |  Blocker | build, documentation | Akira Ajisaka | Akira Ajisaka |
+| [YARN-4289](https://issues.apache.org/jira/browse/YARN-4289) | TestDistributedShell failing with bind exception |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4296](https://issues.apache.org/jira/browse/YARN-4296) | DistributedShell Log.info is not friendly |  Major | applications/distributed-shell | Xiaowei Wang | Xiaowei Wang |
+| [YARN-4246](https://issues.apache.org/jira/browse/YARN-4246) | NPE while listing app attempt |  Major | . | Varun Saxena | nijel |
+| [YARN-4223](https://issues.apache.org/jira/browse/YARN-4223) | Findbugs warnings in hadoop-yarn-server-nodemanager project |  Minor | nodemanager | Varun Saxena | Varun Saxena |
+| [HADOOP-12513](https://issues.apache.org/jira/browse/HADOOP-12513) | Dockerfile lacks initial 'apt-get update' |  Trivial | build | Akihiro Suda | Akihiro Suda |
+| [YARN-4284](https://issues.apache.org/jira/browse/YARN-4284) | condition for AM blacklisting is too narrow |  Major | resourcemanager | Sangjin Lee | Sangjin Lee |
+| [HDFS-9268](https://issues.apache.org/jira/browse/HDFS-9268) | fuse\_dfs chown crashes when uid is passed as -1 |  Minor | . | Wei-Chiu Chuang | Colin P. McCabe |
+| [HDFS-9284](https://issues.apache.org/jira/browse/HDFS-9284) | fsck command should not print exception trace when file not found |  Major | . | Jagadesh Kiran N | Jagadesh Kiran N |
+| [HDFS-9305](https://issues.apache.org/jira/browse/HDFS-9305) | Delayed heartbeat processing causes storm of subsequent heartbeats |  Major | datanode | Chris Nauroth | Arpit Agarwal |
+| [YARN-4169](https://issues.apache.org/jira/browse/YARN-4169) | Fix racing condition of TestNodeStatusUpdaterForLabels |  Critical | test | Steve Loughran | Naganarasimha G R |
+| [YARN-4300](https://issues.apache.org/jira/browse/YARN-4300) | [JDK8] Fix javadoc errors caused by wrong tags |  Blocker | build, documentation | Akira Ajisaka | Akira Ajisaka |
+| [YARN-4302](https://issues.apache.org/jira/browse/YARN-4302) | SLS not able start due to NPE in SchedulerApplicationAttempt#getResourceUsageReport |  Major | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HADOOP-12178](https://issues.apache.org/jira/browse/HADOOP-12178) | NPE during handling of SASL setup if problem with SASL resolver class |  Minor | ipc | Steve Loughran | Steve Loughran |
+| [HADOOP-11685](https://issues.apache.org/jira/browse/HADOOP-11685) | StorageException complaining " no lease ID" during HBase distributed log splitting |  Major | tools | Duo Xu | Duo Xu |
+| [HDFS-9231](https://issues.apache.org/jira/browse/HDFS-9231) | fsck doesn't list correct file path when Bad Replicas/Blocks are in a snapshot |  Major | snapshots | Xiao Chen | Xiao Chen |
+| [HDFS-9302](https://issues.apache.org/jira/browse/HDFS-9302) | WebHDFS truncate throws NullPointerException if newLength is not provided |  Minor | webhdfs | Karthik Palaniappan | Jagadesh Kiran N |
+| [YARN-4251](https://issues.apache.org/jira/browse/YARN-4251) | TestAMRMClientOnRMRestart#testAMRMClientOnAMRMTokenRollOverOnRMRestart is failing |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12519](https://issues.apache.org/jira/browse/HADOOP-12519) | hadoop-azure tests should avoid creating a metrics configuration file in the module root directory. |  Minor | fs/azure, test | Chris Nauroth | Chris Nauroth |
+| [HDFS-9279](https://issues.apache.org/jira/browse/HDFS-9279) | Decomissioned capacity should not be considered for configured/used capacity |  Major | . | Kuhu Shukla | Kuhu Shukla |
+| [HDFS-9044](https://issues.apache.org/jira/browse/HDFS-9044) | Give Priority to FavouredNodes , before selecting nodes from FavouredNode's Node Group |  Major | . | J.Andreina | J.Andreina |
+| [YARN-4130](https://issues.apache.org/jira/browse/YARN-4130) | Duplicate declaration of ApplicationId in RMAppManager#submitApplication method |  Trivial | resourcemanager | Kai Sasaki | Kai Sasaki |
+| [YARN-4288](https://issues.apache.org/jira/browse/YARN-4288) | NodeManager restart should keep retrying to register to RM while connection exception happens during RM failed over. |  Critical | nodemanager | Junping Du | Junping Du |
+| [MAPREDUCE-6515](https://issues.apache.org/jira/browse/MAPREDUCE-6515) | Update Application priority in AM side from AM-RM heartbeat |  Major | applicationmaster | Sunil G | Sunil G |
+| [HDFS-9332](https://issues.apache.org/jira/browse/HDFS-9332) | Fix Precondition failures from NameNodeEditLogRoller while saving namespace |  Major | . | Andrew Wang | Andrew Wang |
+| [YARN-4313](https://issues.apache.org/jira/browse/YARN-4313) | Race condition in MiniMRYarnCluster when getting history server address |  Major | . | Jian He | Jian He |
+| [YARN-4312](https://issues.apache.org/jira/browse/YARN-4312) | TestSubmitApplicationWithRMHA fails on branch-2.7 and branch-2.6 as some of the test cases time out |  Major | . | Varun Saxena | Varun Saxena |
+| [YARN-4320](https://issues.apache.org/jira/browse/YARN-4320) | TestJobHistoryEventHandler fails as AHS in MiniYarnCluster no longer binds to default port 8188 |  Major | . | Varun Saxena | Varun Saxena |
+| [MAPREDUCE-6528](https://issues.apache.org/jira/browse/MAPREDUCE-6528) | Memory leak for HistoryFileManager.getJobSummary() |  Critical | jobhistoryserver | Junping Du | Junping Du |
+| [MAPREDUCE-6451](https://issues.apache.org/jira/browse/MAPREDUCE-6451) | DistCp has incorrect chunkFilePath for multiple jobs when strategy is dynamic |  Major | distcp | Kuhu Shukla | Kuhu Shukla |
+| [HADOOP-12533](https://issues.apache.org/jira/browse/HADOOP-12533) | Introduce FileNotFoundException in WASB for read and seek API |  Major | tools | Dushyanth | Dushyanth |
+| [HADOOP-12508](https://issues.apache.org/jira/browse/HADOOP-12508) | delete fails with exception when lease is held on blob |  Blocker | fs/azure | Gaurav Kanade | Gaurav Kanade |
+| [HDFS-9329](https://issues.apache.org/jira/browse/HDFS-9329) | TestBootstrapStandby#testRateThrottling is flaky because fsimage size is smaller than IO buffer size |  Minor | test | Zhe Zhang | Zhe Zhang |
+| [HDFS-9313](https://issues.apache.org/jira/browse/HDFS-9313) | Possible NullPointerException in BlockManager if no excess replica can be chosen |  Major | . | Ming Ma | Ming Ma |
+| [HADOOP-12542](https://issues.apache.org/jira/browse/HADOOP-12542) | TestDNS fails on Windows after HADOOP-12437. |  Major | net | Chris Nauroth | Chris Nauroth |
+| [YARN-4326](https://issues.apache.org/jira/browse/YARN-4326) | Fix TestDistributedShell timeout as AHS in MiniYarnCluster no longer binds to default port 8188 |  Major | . | MENG DING | MENG DING |
+| [HDFS-9289](https://issues.apache.org/jira/browse/HDFS-9289) | Make DataStreamer#block thread safe and verify genStamp in commitBlock |  Critical | . | Chang Li | Chang Li |
+| [YARN-4127](https://issues.apache.org/jira/browse/YARN-4127) | RM fail with noAuth error if switched from failover mode to non-failover mode |  Major | resourcemanager | Jian He | Varun Saxena |
+| [HDFS-9351](https://issues.apache.org/jira/browse/HDFS-9351) | checkNNStartup() need to be called when fsck calls FSNamesystem.getSnapshottableDirs() |  Major | namenode | Yongjun Zhang | Xiao Chen |
+| [HADOOP-12296](https://issues.apache.org/jira/browse/HADOOP-12296) | when setnetgrent returns 0 in linux, exception should be thrown |  Major | . | Chang Li | Chang Li |
+| [HDFS-9357](https://issues.apache.org/jira/browse/HDFS-9357) | NN UI renders icons of decommissioned DN incorrectly |  Critical | . | Archana T | Surendra Singh Lilhore |
+| [HADOOP-12540](https://issues.apache.org/jira/browse/HADOOP-12540) | TestAzureFileSystemInstrumentation#testClientErrorMetrics fails intermittently due to assumption that a lease error will be thrown. |  Major | fs/azure, test | Chris Nauroth | Gaurav Kanade |
+| [HDFS-9360](https://issues.apache.org/jira/browse/HDFS-9360) | Storage type usage isn't updated properly after file deletion |  Major | . | Ming Ma | Ming Ma |
+| [HDFS-9378](https://issues.apache.org/jira/browse/HDFS-9378) | hadoop-hdfs-client tests do not write logs. |  Minor | test | Chris Nauroth | Chris Nauroth |
+| [HDFS-4937](https://issues.apache.org/jira/browse/HDFS-4937) | ReplicationMonitor can infinite-loop in BlockPlacementPolicyDefault#chooseRandom() |  Major | namenode | Kihwal Lee | Kihwal Lee |
+| [HDFS-9372](https://issues.apache.org/jira/browse/HDFS-9372) | Remove dead code in DataStorage.recoverTransitionRead |  Major | datanode | Duo Zhang | Duo Zhang |
+| [HDFS-9384](https://issues.apache.org/jira/browse/HDFS-9384) | TestWebHdfsContentLength intermittently hangs and fails due to TCP conversation mismatch between client and server. |  Minor | test | Chris Nauroth | Chris Nauroth |
+| [HDFS-6481](https://issues.apache.org/jira/browse/HDFS-6481) | DatanodeManager#getDatanodeStorageInfos() should check the length of storageIDs |  Minor | namenode | Ted Yu | Tsz Wo Nicholas Sze |
+| [HDFS-9318](https://issues.apache.org/jira/browse/HDFS-9318) | considerLoad factor can be improved |  Major | . | Kuhu Shukla | Kuhu Shukla |
+| [HDFS-9236](https://issues.apache.org/jira/browse/HDFS-9236) | Missing sanity check for block size during block recovery |  Major | datanode | Tony Wu | Tony Wu |
+| [HDFS-9394](https://issues.apache.org/jira/browse/HDFS-9394) | branch-2 hadoop-hdfs-client fails during FileSystem ServiceLoader initialization, because HftpFileSystem is missing. |  Critical | hdfs-client | Chris Nauroth | Mingliang Liu |
+| [HADOOP-12526](https://issues.apache.org/jira/browse/HADOOP-12526) | [Branch-2] there are duplicate dependency definitions in pom's |  Major | build | Sangjin Lee | Sangjin Lee |
+| [MAPREDUCE-5763](https://issues.apache.org/jira/browse/MAPREDUCE-5763) | Warn message about httpshuffle in NM logs |  Major | . | Sandy Ryza | Akira Ajisaka |
+| [HDFS-9383](https://issues.apache.org/jira/browse/HDFS-9383) | TestByteArrayManager#testByteArrayManager fails |  Major | . | Kihwal Lee | Tsz Wo Nicholas Sze |
+| [HDFS-9249](https://issues.apache.org/jira/browse/HDFS-9249) | NPE is thrown if an IOException is thrown in NameNode constructor |  Minor | namenode | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-2261](https://issues.apache.org/jira/browse/HDFS-2261) | AOP unit tests are not getting compiled or run |  Minor | test | Giridharan Kesavan | Haohui Mai |
+| [HDFS-9401](https://issues.apache.org/jira/browse/HDFS-9401) | Fix findbugs warnings in BlockRecoveryWorker |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12482](https://issues.apache.org/jira/browse/HADOOP-12482) | Race condition in JMX cache update |  Major | . | Tony Wu | Tony Wu |
+| [HDFS-9364](https://issues.apache.org/jira/browse/HDFS-9364) | Unnecessary DNS resolution attempts when creating NameNodeProxies |  Major | ha, performance | Xiao Chen | Xiao Chen |
+| [HADOOP-12560](https://issues.apache.org/jira/browse/HADOOP-12560) | Fix sprintf warnings in {{DomainSocket.c}} introduced by HADOOP-12344 |  Major | native | Colin P. McCabe | Mingliang Liu |
+| [HDFS-9245](https://issues.apache.org/jira/browse/HDFS-9245) | Fix findbugs warnings in hdfs-nfs/WriteCtx |  Major | nfs | Mingliang Liu | Mingliang Liu |
+| [YARN-4241](https://issues.apache.org/jira/browse/YARN-4241) | Fix typo of property name in yarn-default.xml |  Major | documentation | Anthony Rojas | Anthony Rojas |
+| [MAPREDUCE-6533](https://issues.apache.org/jira/browse/MAPREDUCE-6533) | testDetermineCacheVisibilities of TestClientDistributedCacheManager is broken |  Major | . | Chang Li | Chang Li |
+| [HDFS-9396](https://issues.apache.org/jira/browse/HDFS-9396) | Total files and directories on jmx and web UI on standby is uninitialized |  Blocker | . | Kihwal Lee | Kihwal Lee |
+| [MAPREDUCE-6540](https://issues.apache.org/jira/browse/MAPREDUCE-6540) | TestMRTimelineEventHandling fails |  Major | test | Sangjin Lee | Sangjin Lee |
+| [YARN-4347](https://issues.apache.org/jira/browse/YARN-4347) | Resource manager fails with Null pointer exception |  Major | yarn | Yesha Vora | Jian He |
+| [HADOOP-12545](https://issues.apache.org/jira/browse/HADOOP-12545) | Hadoop javadoc has broken links for AccessControlList, ImpersonationProvider, DefaultImpersonationProvider, and DistCp |  Major | documentation | Mohammad Arshad | Mohammad Arshad |
+| [YARN-4354](https://issues.apache.org/jira/browse/YARN-4354) | Public resource localization fails with NPE |  Blocker | nodemanager | Jason Lowe | Jason Lowe |
+| [HDFS-9413](https://issues.apache.org/jira/browse/HDFS-9413) | getContentSummary() on standby should throw StandbyException |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-9358](https://issues.apache.org/jira/browse/HDFS-9358) | TestNodeCount#testNodeCount timed out |  Major | test | Wei-Chiu Chuang | Masatake Iwasaki |
+| [HDFS-9397](https://issues.apache.org/jira/browse/HDFS-9397) | Fix typo for readChecksum() LOG.warn in BlockSender.java |  Trivial | . | Enrique Flores | Enrique Flores |
+| [HDFS-9400](https://issues.apache.org/jira/browse/HDFS-9400) | TestRollingUpgradeRollback fails on branch-2. |  Blocker | . | Chris Nauroth | Brahma Reddy Battula |
+| [YARN-4367](https://issues.apache.org/jira/browse/YARN-4367) | SLS webapp doesn't load |  Major | scheduler-load-simulator | Karthik Kambatla | Karthik Kambatla |
+| [HDFS-9431](https://issues.apache.org/jira/browse/HDFS-9431) | DistributedFileSystem#concat fails if the target path is relative. |  Major | hdfs-client | Kazuho Fujii | Kazuho Fujii |
+| [YARN-2859](https://issues.apache.org/jira/browse/YARN-2859) | ApplicationHistoryServer binds to default port 8188 in MiniYARNCluster |  Critical | timelineserver | Hitesh Shah | Vinod Kumar Vavilapalli |
+| [YARN-4374](https://issues.apache.org/jira/browse/YARN-4374) | RM capacity scheduler UI rounds user limit factor |  Major | capacityscheduler | Chang Li | Chang Li |
+| [YARN-3769](https://issues.apache.org/jira/browse/YARN-3769) | Consider user limit when calculating total pending resource for preemption policy in Capacity Scheduler |  Major | capacityscheduler | Eric Payne | Eric Payne |
+| [HDFS-9443](https://issues.apache.org/jira/browse/HDFS-9443) | Disabling HDFS client socket cache causes logging message printed to console for CLI commands. |  Trivial | hdfs-client | Chris Nauroth | Chris Nauroth |
+| [HADOOP-11218](https://issues.apache.org/jira/browse/HADOOP-11218) | Add TLSv1.1,TLSv1.2 to KMS, HttpFS, SSLFactory |  Critical | kms | Robert Kanter | Vijay Singh |
+| [HADOOP-12467](https://issues.apache.org/jira/browse/HADOOP-12467) | Respect user-defined JAVA\_LIBRARY\_PATH in Windows Hadoop scripts |  Minor | scripts | Radhey Shah | Radhey Shah |
+| [HADOOP-12181](https://issues.apache.org/jira/browse/HADOOP-12181) | Fix intermittent test failure of TestZKSignerSecretProvider |  Minor | . | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-6885](https://issues.apache.org/jira/browse/HDFS-6885) | Fix wrong use of BytesWritable in FSEditLogOp#RenameOp |  Minor | namenode | Yi Liu | Yi Liu |
+| [HADOOP-12098](https://issues.apache.org/jira/browse/HADOOP-12098) | Remove redundant test dependencies in Hadoop Archives |  Minor | . | Varun Saxena | Varun Saxena |
+| [HDFS-7897](https://issues.apache.org/jira/browse/HDFS-7897) | Shutdown metrics when stopping JournalNode |  Major | . | zhouyingchao | zhouyingchao |
+| [HADOOP-11149](https://issues.apache.org/jira/browse/HADOOP-11149) | Increase the timeout of TestZKFailoverController |  Major | test | Rajat Jain | Steve Loughran |
+| [HADOOP-11677](https://issues.apache.org/jira/browse/HADOOP-11677) | Add cookie flags for logs and static contexts |  Major | . | nijel | nijel |
+| [HDFS-9356](https://issues.apache.org/jira/browse/HDFS-9356) | Decommissioning node does not have Last Contact value in the UI |  Major | . | Archana T | Surendra Singh Lilhore |
+| [HADOOP-12313](https://issues.apache.org/jira/browse/HADOOP-12313) | NPE in JvmPauseMonitor when calling stop() before start() |  Critical | . | Rohith Sharma K S | Gabor Liptak |
+| [HDFS-9428](https://issues.apache.org/jira/browse/HDFS-9428) | Fix intermittent failure of TestDNFencing.testQueueingWithAppend |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-9435](https://issues.apache.org/jira/browse/HDFS-9435) | TestBlockRecovery#testRBWReplicas is failing intermittently |  Major | . | Rakesh R | Rakesh R |
+| [HADOOP-12577](https://issues.apache.org/jira/browse/HADOOP-12577) | Bump up commons-collections version to 3.2.2 to address a security flaw |  Blocker | build, security | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4344](https://issues.apache.org/jira/browse/YARN-4344) | NMs reconnecting with changed capabilities can lead to wrong cluster resource calculations |  Critical | resourcemanager | Varun Vasudev | Varun Vasudev |
+| [HADOOP-9822](https://issues.apache.org/jira/browse/HADOOP-9822) | create constant MAX\_CAPACITY in RetryCache rather than hard-coding 16 in RetryCache constructor |  Minor | . | Tsuyoshi Ozawa | Tsuyoshi Ozawa |
+| [YARN-4298](https://issues.apache.org/jira/browse/YARN-4298) | Fix findbugs warnings in hadoop-yarn-common |  Minor | . | Varun Saxena | Sunil G |
+| [YARN-4387](https://issues.apache.org/jira/browse/YARN-4387) | Fix typo in FairScheduler log message |  Minor | fairscheduler | Xin Wang | Xin Wang |
+| [HDFS-6101](https://issues.apache.org/jira/browse/HDFS-6101) | TestReplaceDatanodeOnFailure fails occasionally |  Major | test | Arpit Agarwal | Wei-Chiu Chuang |
+| [HDFS-8855](https://issues.apache.org/jira/browse/HDFS-8855) | Webhdfs client leaks active NameNode connections |  Major | webhdfs | Bob Hansen | Xiaobing Zhou |
+| [HDFS-8335](https://issues.apache.org/jira/browse/HDFS-8335) | FSNamesystem should construct FSPermissionChecker only if permission is enabled |  Major | . | David Bryson | Gabor Liptak |
+| [MAPREDUCE-5883](https://issues.apache.org/jira/browse/MAPREDUCE-5883) | "Total megabyte-seconds" in job counters is slightly misleading |  Minor | . | Nathan Roberts | Nathan Roberts |
+| [YARN-4365](https://issues.apache.org/jira/browse/YARN-4365) | FileSystemNodeLabelStore should check for root dir existence on startup |  Major | resourcemanager | Jason Lowe | Kuhu Shukla |
+| [HDFS-8807](https://issues.apache.org/jira/browse/HDFS-8807) | dfs.datanode.data.dir does not handle spaces between storageType and URI correctly |  Major | datanode | Anu Engineer | Anu Engineer |
+| [HADOOP-12415](https://issues.apache.org/jira/browse/HADOOP-12415) | hdfs and nfs builds broken on -missing compile-time dependency on netty |  Major | nfs | Konstantin Boudnik | Tom Zeng |
+| [MAPREDUCE-6553](https://issues.apache.org/jira/browse/MAPREDUCE-6553) | Replace '\u2b05' with '\<-' in rendering job configuration |  Minor | jobhistoryserver | Akira Ajisaka | Gabor Liptak |
+| [HADOOP-12598](https://issues.apache.org/jira/browse/HADOOP-12598) | add XML namespace declarations for some hadoop/tools modules |  Minor | build, tools | Xin Wang | Xin Wang |
+| [YARN-4380](https://issues.apache.org/jira/browse/YARN-4380) | TestResourceLocalizationService.testDownloadingResourcesOnContainerKill fails intermittently |  Major | test | Tsuyoshi Ozawa | Varun Saxena |
+| [MAPREDUCE-6557](https://issues.apache.org/jira/browse/MAPREDUCE-6557) | Some tests in mapreduce-client-app are writing outside of target |  Blocker | build | Allen Wittenauer | Akira Ajisaka |
+| [HDFS-9459](https://issues.apache.org/jira/browse/HDFS-9459) | hadoop-hdfs-native-client fails test build on Windows after transition to ctest. |  Blocker | build, test | Chris Nauroth | Chris Nauroth |
+| [HDFS-9407](https://issues.apache.org/jira/browse/HDFS-9407) | TestFileTruncate fails with BindException |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-9467](https://issues.apache.org/jira/browse/HDFS-9467) | Fix data race accessing writeLockHeldTimeStamp in FSNamesystem |  Major | namenode | Mingliang Liu | Mingliang Liu |
+| [MAPREDUCE-6549](https://issues.apache.org/jira/browse/MAPREDUCE-6549) | multibyte delimiters with LineRecordReader cause duplicate records |  Major | mrv1, mrv2 | Dustin Cote | Wilfred Spiegelenburg |
+| [MAPREDUCE-6550](https://issues.apache.org/jira/browse/MAPREDUCE-6550) | archive-logs tool changes log ownership to the Yarn user when using DefaultContainerExecutor |  Major | . | Robert Kanter | Robert Kanter |
+| [HADOOP-12468](https://issues.apache.org/jira/browse/HADOOP-12468) | Partial group resolution failure should not result in user lockout |  Minor | security | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9426](https://issues.apache.org/jira/browse/HDFS-9426) | Rollingupgrade finalization is not backward compatible |  Blocker | . | Kihwal Lee | Kihwal Lee |
+| [HADOOP-10406](https://issues.apache.org/jira/browse/HADOOP-10406) | TestIPC.testIpcWithReaderQueuing may fail |  Major | ipc | Tsz Wo Nicholas Sze | Xiao Chen |
+| [HDFS-9470](https://issues.apache.org/jira/browse/HDFS-9470) | Encryption zone on root not loaded from fsimage after NN restart |  Critical | . | Xiao Chen | Xiao Chen |
+| [HDFS-9336](https://issues.apache.org/jira/browse/HDFS-9336) | deleteSnapshot throws NPE when snapshotname is null |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12609](https://issues.apache.org/jira/browse/HADOOP-12609) | Fix intermittent failure of TestDecayRpcScheduler |  Minor | ipc, test | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-6533](https://issues.apache.org/jira/browse/HDFS-6533) | TestBPOfferService#testBasicFunctionalitytest fails intermittently |  Major | datanode, hdfs-client | Yongjun Zhang | Wei-Chiu Chuang |
+| [YARN-4398](https://issues.apache.org/jira/browse/YARN-4398) | Yarn recover functionality causes the cluster running slowly and the cluster usage rate is far below 100 |  Major | resourcemanager | NING DING | NING DING |
+| [HDFS-9294](https://issues.apache.org/jira/browse/HDFS-9294) | DFSClient  deadlock when close file and failed to renew lease |  Blocker | hdfs-client | DENG FEI | Brahma Reddy Battula |
+| [HADOOP-12565](https://issues.apache.org/jira/browse/HADOOP-12565) | Replace DSA with RSA for SSH key type in SingleCluster.md |  Minor | documentation | Alexander Veit | Mingliang Liu |
+| [YARN-4408](https://issues.apache.org/jira/browse/YARN-4408) | NodeManager still reports negative running containers |  Major | nodemanager | Robert Kanter | Robert Kanter |
+| [HDFS-9430](https://issues.apache.org/jira/browse/HDFS-9430) | Remove waitForLoadingFSImage since checkNNStartup has ensured image loaded and namenode started. |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4392](https://issues.apache.org/jira/browse/YARN-4392) | ApplicationCreatedEvent event time resets after RM restart/failover |  Critical | . | Xuan Gong | Naganarasimha G R |
+| [YARN-4422](https://issues.apache.org/jira/browse/YARN-4422) | Generic AHS sometimes doesn't show started, node, or logs on App page |  Major | . | Eric Payne | Eric Payne |
+| [YARN-4424](https://issues.apache.org/jira/browse/YARN-4424) | Fix deadlock in RMAppImpl |  Blocker | . | Yesha Vora | Jian He |
+| [HADOOP-12617](https://issues.apache.org/jira/browse/HADOOP-12617) | SPNEGO authentication request to non-default realm gets default realm name inserted in target server principal |  Major | security | Matt Foley | Matt Foley |
+| [YARN-4431](https://issues.apache.org/jira/browse/YARN-4431) | Not necessary to do unRegisterNM() if NM get stop due to failed to connect to RM |  Major | nodemanager | Junping Du | Junping Du |
+| [YARN-4421](https://issues.apache.org/jira/browse/YARN-4421) | Remove dead code in RmAppImpl.RMAppRecoveredTransition |  Trivial | resourcemanager | Daniel Templeton | Daniel Templeton |
+| [HADOOP-12618](https://issues.apache.org/jira/browse/HADOOP-12618) | NPE in TestSequenceFile |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4434](https://issues.apache.org/jira/browse/YARN-4434) | NodeManager Disk Checker parameter documentation is not correct |  Minor | documentation, nodemanager | Takashi Ohnishi | Weiwei Yang |
+| [HADOOP-12602](https://issues.apache.org/jira/browse/HADOOP-12602) | TestMetricsSystemImpl#testQSize occasionally fail |  Major | test | Wei-Chiu Chuang | Masatake Iwasaki |
+| [HDFS-9519](https://issues.apache.org/jira/browse/HDFS-9519) | Some coding improvement in SecondaryNameNode#main |  Major | namenode | Yongjun Zhang | Xiao Chen |
+| [HDFS-9514](https://issues.apache.org/jira/browse/HDFS-9514) | TestDistributedFileSystem.testDFSClientPeerWriteTimeout failing; exception being swallowed |  Major | hdfs-client, test | Steve Loughran | Wei-Chiu Chuang |
+| [HDFS-9535](https://issues.apache.org/jira/browse/HDFS-9535) | Newly completed blocks in IBR should not be considered under-replicated too quickly |  Major | namenode | Jing Zhao | Mingliang Liu |
+| [YARN-4418](https://issues.apache.org/jira/browse/YARN-4418) | AM Resource Limit per partition can be updated to ResourceUsage as well |  Major | resourcemanager | Sunil G | Sunil G |
+| [YARN-4403](https://issues.apache.org/jira/browse/YARN-4403) | (AM/NM/Container)LivelinessMonitor should use monotonic time when calculating period |  Critical | . | Junping Du | Junping Du |
+| [YARN-4402](https://issues.apache.org/jira/browse/YARN-4402) | TestNodeManagerShutdown And TestNodeManagerResync fails with bind exception |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4439](https://issues.apache.org/jira/browse/YARN-4439) | Clarify NMContainerStatus#toString method. |  Major | . | Jian He | Jian He |
+| [YARN-4440](https://issues.apache.org/jira/browse/YARN-4440) | FSAppAttempt#getAllowedLocalityLevelByTime should init the lastScheduler time |  Major | fairscheduler | Yiqun Lin | Yiqun Lin |
+| [HDFS-9516](https://issues.apache.org/jira/browse/HDFS-9516) | truncate file fails with data dirs on multiple disks |  Major | datanode | Bogdan Raducanu | Plamen Jeliazkov |
+| [HDFS-8894](https://issues.apache.org/jira/browse/HDFS-8894) | Set SO\_KEEPALIVE on DN server sockets |  Major | datanode | Nathan Roberts | Kanaka Kumar Avvaru |
+| [YARN-4461](https://issues.apache.org/jira/browse/YARN-4461) | Redundant nodeLocalityDelay log in LeafQueue |  Trivial | capacityscheduler | Jason Lowe | Eric Payne |
+| [YARN-4452](https://issues.apache.org/jira/browse/YARN-4452) | NPE when submit Unmanaged application |  Critical | . | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-9565](https://issues.apache.org/jira/browse/HDFS-9565) | TestDistributedFileSystem.testLocatedFileStatusStorageIdsTypes is flaky due to race condition |  Minor | fs, test | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4225](https://issues.apache.org/jira/browse/YARN-4225) | Add preemption status to yarn queue -status for capacity scheduler |  Minor | capacity scheduler, yarn | Eric Payne | Eric Payne |
+| [HDFS-9515](https://issues.apache.org/jira/browse/HDFS-9515) | NPE when MiniDFSCluster#shutdown is invoked on uninitialized reference |  Minor | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9572](https://issues.apache.org/jira/browse/HDFS-9572) | Prevent DataNode log spam if a client connects on the data transfer port but sends no data. |  Major | datanode | Chris Nauroth | Chris Nauroth |
+| [HDFS-9533](https://issues.apache.org/jira/browse/HDFS-9533) | seen\_txid in the shared edits directory is modified during bootstrapping |  Major | ha, namenode | Kihwal Lee | Kihwal Lee |
+| [HDFS-9571](https://issues.apache.org/jira/browse/HDFS-9571) | Fix ASF Licence warnings in Jenkins reports |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-9393](https://issues.apache.org/jira/browse/HDFS-9393) | After choosing favored nodes, choosing nodes for remaining replicas should go through BlockPlacementPolicy |  Major | . | J.Andreina | J.Andreina |
+| [HDFS-9347](https://issues.apache.org/jira/browse/HDFS-9347) | Invariant assumption in TestQuorumJournalManager.shutdown() is wrong |  Major | test | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12656](https://issues.apache.org/jira/browse/HADOOP-12656) | MiniKdc throws "address in use" BindException |  Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12636](https://issues.apache.org/jira/browse/HADOOP-12636) | Prevent ServiceLoader failure init for unused FileSystems |  Major | fs | Inigo Goiri | Inigo Goiri |
+| [MAPREDUCE-6583](https://issues.apache.org/jira/browse/MAPREDUCE-6583) | Clarify confusing sentence in MapReduce tutorial document |  Minor | documentation | chris snow | Kai Sasaki |
+| [HDFS-9505](https://issues.apache.org/jira/browse/HDFS-9505) | HDFS Architecture documentation needs to be refreshed. |  Major | documentation | Chris Nauroth | Masatake Iwasaki |
+| [YARN-4454](https://issues.apache.org/jira/browse/YARN-4454) | NM to nodelabel mapping going wrong after RM restart |  Critical | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-9580](https://issues.apache.org/jira/browse/HDFS-9580) | TestComputeInvalidateWork#testDatanodeReRegistration failed due to unexpected number of invalidate blocks. |  Major | datanode, namenode, test | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4477](https://issues.apache.org/jira/browse/YARN-4477) | FairScheduler: Handle condition which can result in an infinite loop in attemptScheduling. |  Major | fairscheduler | Tao Jie | Tao Jie |
+| [HDFS-9589](https://issues.apache.org/jira/browse/HDFS-9589) | Block files which have been hardlinked should be duplicated before the DataNode appends to the them |  Major | datanode | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-9458](https://issues.apache.org/jira/browse/HDFS-9458) | TestBackupNode always binds to port 50070, which can cause bind failures. |  Major | test | Chris Nauroth | Xiao Chen |
+| [YARN-4109](https://issues.apache.org/jira/browse/YARN-4109) | Exception on RM scheduler page loading with labels |  Minor | . | Bibin A Chundatt | Mohammad Shahid Khan |
+| [MAPREDUCE-6419](https://issues.apache.org/jira/browse/MAPREDUCE-6419) | JobHistoryServer doesn't sort properly based on Job ID when Job id's exceed 9999 |  Major | webapps | Devaraj K | Mohammad Shahid Khan |
+| [HDFS-9597](https://issues.apache.org/jira/browse/HDFS-9597) | BaseReplicationPolicyTest should update data node stats after adding a data node |  Blocker | datanode | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12681](https://issues.apache.org/jira/browse/HADOOP-12681) | start-build-env.sh fails in branch-2 |  Blocker | build | Akira Ajisaka | Kengo Seki |
+| [HDFS-7163](https://issues.apache.org/jira/browse/HDFS-7163) | WebHdfsFileSystem should retry reads according to the configured retry policy. |  Major | webhdfs | Eric Payne | Eric Payne |
+| [HADOOP-12559](https://issues.apache.org/jira/browse/HADOOP-12559) | KMS connection failures should trigger TGT renewal |  Major | security | Zhe Zhang | Zhe Zhang |
+| [MAPREDUCE-6574](https://issues.apache.org/jira/browse/MAPREDUCE-6574) | MR AM should print host of failed tasks. |  Major | . | Wangda Tan | Mohammad Shahid Khan |
+| [MAPREDUCE-6589](https://issues.apache.org/jira/browse/MAPREDUCE-6589) | TestTaskLog outputs a log under directory other than target/test-dir |  Major | test | Akira Ajisaka | Akira Ajisaka |
+| [YARN-4315](https://issues.apache.org/jira/browse/YARN-4315) | NaN in Queue percentage for cluster apps page |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-1382](https://issues.apache.org/jira/browse/YARN-1382) | Remove unusableRMNodesConcurrentSet (never used) in NodeListManager to get rid of memory leak |  Major | resourcemanager | Alejandro Abdelnur | Rohith Sharma K S |
+| [HADOOP-12682](https://issues.apache.org/jira/browse/HADOOP-12682) | Fix TestKMS#testKMSRestart\* failure |  Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12608](https://issues.apache.org/jira/browse/HADOOP-12608) | Fix exception message in WASB when connecting with anonymous credential |  Major | tools | Dushyanth | Dushyanth |
+| [YARN-4524](https://issues.apache.org/jira/browse/YARN-4524) | Cleanup AppSchedulingInfo |  Major | scheduler | Karthik Kambatla | Karthik Kambatla |
+| [YARN-4510](https://issues.apache.org/jira/browse/YARN-4510) | Fix SLS startup failure caused by NPE |  Critical | . | Bibin A Chundatt | Bibin A Chundatt |
+| [MAPREDUCE-6593](https://issues.apache.org/jira/browse/MAPREDUCE-6593) | TestJobHistoryEventHandler.testTimelineEventHandling fails on trunk because of NPE |  Major | . | Tsuyoshi Ozawa | Naganarasimha G R |
+| [HDFS-9445](https://issues.apache.org/jira/browse/HDFS-9445) | Datanode may deadlock while handling a bad volume |  Blocker | . | Kihwal Lee | Walter Su |
+| [HADOOP-12658](https://issues.apache.org/jira/browse/HADOOP-12658) | Clear javadoc and check style issues around DomainSocket |  Trivial | . | Kai Zheng | Kai Zheng |
+| [HADOOP-12604](https://issues.apache.org/jira/browse/HADOOP-12604) | Exception may be swallowed in KMSClientProvider |  Major | kms | Yongjun Zhang | Yongjun Zhang |
+| [HDFS-9605](https://issues.apache.org/jira/browse/HDFS-9605) | Add links to failed volumes to explorer.html in HDFS Web UI |  Minor | . | Archana T | Archana T |
+| [MAPREDUCE-6577](https://issues.apache.org/jira/browse/MAPREDUCE-6577) | MR AM unable to load native library without MR\_AM\_ADMIN\_USER\_ENV set |  Critical | mr-am | Sangjin Lee | Sangjin Lee |
+| [HADOOP-12689](https://issues.apache.org/jira/browse/HADOOP-12689) | S3 filesystem operations stopped working correctly |  Major | tools | Matthew Paduano | Matthew Paduano |
+| [YARN-4546](https://issues.apache.org/jira/browse/YARN-4546) | ResourceManager crash due to scheduling opportunity overflow |  Critical | resourcemanager | Jason Lowe | Jason Lowe |
+| [HADOOP-12634](https://issues.apache.org/jira/browse/HADOOP-12634) | Change Lazy Rename Pending Operation Completion of WASB to address case of potential data loss due to partial copy |  Critical | . | Gaurav Kanade | Gaurav Kanade |
+| [HDFS-9600](https://issues.apache.org/jira/browse/HDFS-9600) | do not check replication if the block is under construction |  Critical | . | Phil Yang | Phil Yang |
+| [HDFS-9619](https://issues.apache.org/jira/browse/HDFS-9619) | SimulatedFSDataset sometimes can not find blockpool for the correct namenode |  Major | datanode, test | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12675](https://issues.apache.org/jira/browse/HADOOP-12675) | Fix description about retention period in usage of expunge command |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-12613](https://issues.apache.org/jira/browse/HADOOP-12613) | TestFind.processArguments occasionally fails |  Major | test | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [MAPREDUCE-6508](https://issues.apache.org/jira/browse/MAPREDUCE-6508) | TestNetworkedJob fails consistently due to delegation token changes on RM. |  Major | test | Rohith Sharma K S | Akira Ajisaka |
+| [HDFS-9574](https://issues.apache.org/jira/browse/HDFS-9574) | Reduce client failures during datanode restart |  Major | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-9493](https://issues.apache.org/jira/browse/HDFS-9493) | Test o.a.h.hdfs.server.namenode.TestMetaSave fails in trunk |  Major | test | Mingliang Liu | Tony Wu |
+| [HADOOP-12678](https://issues.apache.org/jira/browse/HADOOP-12678) | Handle empty rename pending metadata file during atomic rename in redo path |  Critical | fs/azure | madhumita chakraborty | madhumita chakraborty |
+| [HADOOP-12590](https://issues.apache.org/jira/browse/HADOOP-12590) | TestCompressorDecompressor failing without stack traces |  Critical | test | Steve Loughran | John Zhuge |
+| [HADOOP-12587](https://issues.apache.org/jira/browse/HADOOP-12587) | Hadoop AuthToken refuses to work without a maxinactive attribute in issued token |  Blocker | security | Steve Loughran | Benoy Antony |
+| [HADOOP-12551](https://issues.apache.org/jira/browse/HADOOP-12551) | Introduce FileNotFoundException for WASB FileSystem API |  Major | tools | Dushyanth | Dushyanth |
+| [MAPREDUCE-6068](https://issues.apache.org/jira/browse/MAPREDUCE-6068) | Illegal progress value warnings in map tasks |  Major | mrv2, task | Todd Lipcon | Binglin Chang |
+| [HDFS-9639](https://issues.apache.org/jira/browse/HDFS-9639) | Inconsistent Logging in BootstrapStandby |  Minor | ha | BELUGA BEHR | Xiaobing Zhou |
+| [HDFS-9584](https://issues.apache.org/jira/browse/HDFS-9584) | NPE in distcp when ssl configuration file does not exist in class path. |  Major | distcp | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HADOOP-12584](https://issues.apache.org/jira/browse/HADOOP-12584) | Disable browsing the static directory in HttpServer2 |  Major | security | Robert Kanter | Robert Kanter |
+| [YARN-4567](https://issues.apache.org/jira/browse/YARN-4567) | javadoc failing on java 8 |  Blocker | build | Steve Loughran | Steve Loughran |
+| [YARN-4414](https://issues.apache.org/jira/browse/YARN-4414) | Nodemanager connection errors are retried at multiple levels |  Major | nodemanager | Jason Lowe | Chang Li |
+| [HADOOP-12603](https://issues.apache.org/jira/browse/HADOOP-12603) | TestSymlinkLocalFSFileContext#testSetTimesSymlinkToDir occasionally fail |  Major | test | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4534](https://issues.apache.org/jira/browse/YARN-4534) | Remove the redundant symbol in yarn rmadmin help msg |  Trivial | . | Yiqun Lin | Yiqun Lin |
+| [HADOOP-12700](https://issues.apache.org/jira/browse/HADOOP-12700) | Remove unused import in TestCompressorDecompressor.java |  Minor | . | John Zhuge | John Zhuge |
+| [MAPREDUCE-6601](https://issues.apache.org/jira/browse/MAPREDUCE-6601) | Fix typo in Job#setUseNewAPI |  Trivial | . | Kai Sasaki | Kai Sasaki |
+| [YARN-3446](https://issues.apache.org/jira/browse/YARN-3446) | FairScheduler headroom calculation should exclude nodes in the blacklist |  Major | fairscheduler | zhihai xu | zhihai xu |
+| [HDFS-9648](https://issues.apache.org/jira/browse/HDFS-9648) | TestStartup.testImageChecksum is broken by HDFS-9569's message change |  Trivial | namenode | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12706](https://issues.apache.org/jira/browse/HADOOP-12706) | TestLocalFsFCStatistics#testStatisticsThreadLocalDataCleanUp times out occasionally |  Major | test | Jason Lowe | Sangjin Lee |
+| [YARN-4581](https://issues.apache.org/jira/browse/YARN-4581) | AHS writer thread leak makes RM crash while RM is recovering |  Major | resourcemanager | sandflee | sandflee |
+| [MAPREDUCE-6554](https://issues.apache.org/jira/browse/MAPREDUCE-6554) | MRAppMaster servicestart failing  with NPE in MRAppMaster#parsePreviousJobHistory |  Critical | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-4389](https://issues.apache.org/jira/browse/YARN-4389) | "yarn.am.blacklisting.enabled" and "yarn.am.blacklisting.disable-failure-threshold" should be app specific rather than a setting for whole YARN cluster |  Critical | applications | Junping Du | Sunil G |
+| [HDFS-9612](https://issues.apache.org/jira/browse/HDFS-9612) | DistCp worker threads are not terminated after jobs are done. |  Major | distcp | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-12712](https://issues.apache.org/jira/browse/HADOOP-12712) | Fix some cmake plugin and native build warnings |  Minor | native | Colin P. McCabe | Colin P. McCabe |
+| [YARN-4538](https://issues.apache.org/jira/browse/YARN-4538) | QueueMetrics pending  cores and memory metrics wrong |  Major | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-4596](https://issues.apache.org/jira/browse/YARN-4596) | SystemMetricPublisher should not swallow error messages from TimelineClient#putEntities |  Major | timelineserver | Li Lu | Li Lu |
+| [YARN-4502](https://issues.apache.org/jira/browse/YARN-4502) | Fix two AM containers get allocated when AM restart |  Critical | . | Yesha Vora | Vinod Kumar Vavilapalli |
+| [HDFS-9623](https://issues.apache.org/jira/browse/HDFS-9623) | Update example configuration of block state change log in log4j.properties |  Minor | logging | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-4565](https://issues.apache.org/jira/browse/YARN-4565) | When sizeBasedWeight enabled for FairOrderingPolicy in CapacityScheduler, Sometimes lead to situation where all queue resources consumed by AMs only |  Major | capacity scheduler, capacityscheduler | Karam Singh | Wangda Tan |
+| [HADOOP-12356](https://issues.apache.org/jira/browse/HADOOP-12356) | Fix computing CPU usage statistics on Windows |  Major | util | Yunqi Zhang | Inigo Goiri |
+| [HDFS-9661](https://issues.apache.org/jira/browse/HDFS-9661) | Deadlock in DN.FsDatasetImpl between moveBlockAcrossStorage and createRbw |  Major | datanode | ade | ade |
+| [HDFS-9655](https://issues.apache.org/jira/browse/HDFS-9655) | NN should start JVM pause monitor before loading fsimage |  Critical | . | John Zhuge | John Zhuge |
+| [YARN-4559](https://issues.apache.org/jira/browse/YARN-4559) | Make leader elector and zk store share the same curator client |  Major | . | Jian He | Jian He |
+| [HADOOP-12605](https://issues.apache.org/jira/browse/HADOOP-12605) | Fix intermittent failure of TestIPC.testIpcWithReaderQueuing |  Minor | test | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-9625](https://issues.apache.org/jira/browse/HDFS-9625) | set replication for empty file  failed when set storage policy |  Major | namenode | DENG FEI | DENG FEI |
+| [HADOOP-12423](https://issues.apache.org/jira/browse/HADOOP-12423) | Handle failure of registering shutdownhook by ShutdownHookManager in static block |  Minor | fs | Abhishek Agarwal | Abhishek Agarwal |
+| [HDFS-9634](https://issues.apache.org/jira/browse/HDFS-9634) | webhdfs client side exceptions don't provide enough details |  Major | webhdfs | Eric Payne | Eric Payne |
+| [YARN-4608](https://issues.apache.org/jira/browse/YARN-4608) | Redundant code statement in WritingYarnApplications |  Minor | documentation | Kai Sasaki | Kai Sasaki |
+| [HADOOP-7161](https://issues.apache.org/jira/browse/HADOOP-7161) | Remove unnecessary oro package from dependency management section |  Minor | build | Todd Lipcon | Sean Busbey |
+| [YARN-4610](https://issues.apache.org/jira/browse/YARN-4610) | Reservations continue looking for one app causes other apps to starve |  Blocker | capacityscheduler | Jason Lowe | Jason Lowe |
+| [HADOOP-12659](https://issues.apache.org/jira/browse/HADOOP-12659) | Incorrect usage of config parameters in token manager of KMS |  Major | security | Tianyin Xu | Mingliang Liu |
+| [MAPREDUCE-6605](https://issues.apache.org/jira/browse/MAPREDUCE-6605) | Fix typos mapreduce.map.skip.proc.count.autoincr and mapreduce.reduce.skip.proc.count.autoincr in mapred-default.xml |  Major | documentation | Dong Zhen | Kai Sasaki |
+| [YARN-4605](https://issues.apache.org/jira/browse/YARN-4605) | Spelling mistake in the help message of "yarn applicationattempt" command |  Trivial | client, yarn | Manjunath Ballur | Weiwei Yang |
+| [HDFS-9682](https://issues.apache.org/jira/browse/HDFS-9682) | Fix a typo "aplication" in HttpFS document |  Trivial | documentation | Weiwei Yang | Weiwei Yang |
+| [HADOOP-12730](https://issues.apache.org/jira/browse/HADOOP-12730) | Hadoop streaming -mapper and -reducer options are wrongly documented as required |  Major | documentation | DeepakVohra | Kengo Seki |
+| [HDFS-8898](https://issues.apache.org/jira/browse/HDFS-8898) | Create API and command-line argument to get quota and quota usage without detailed content summary |  Major | fs | Joep Rottinghuis | Ming Ma |
+| [YARN-4598](https://issues.apache.org/jira/browse/YARN-4598) | Invalid event: RESOURCE\_FAILED at CONTAINER\_CLEANEDUP\_AFTER\_KILL |  Major | nodemanager | tangshangwen | tangshangwen |
+| [YARN-4592](https://issues.apache.org/jira/browse/YARN-4592) | Remove unused GetContainerStatus proto |  Minor | . | Chang Li | Chang Li |
+| [YARN-4520](https://issues.apache.org/jira/browse/YARN-4520) | FinishAppEvent is leaked in leveldb if no app's container running on this node |  Major | nodemanager | sandflee | sandflee |
+| [MAPREDUCE-6610](https://issues.apache.org/jira/browse/MAPREDUCE-6610) | JobHistoryEventHandler should not swallow timeline response |  Trivial | . | Li Lu | Li Lu |
+| [HDFS-9690](https://issues.apache.org/jira/browse/HDFS-9690) | ClientProtocol.addBlock is not idempotent after HDFS-8071 |  Major | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HADOOP-12743](https://issues.apache.org/jira/browse/HADOOP-12743) | Fix git environment check during test-patch |  Major | . | Ray Chiang | Allen Wittenauer |
+| [HADOOP-12735](https://issues.apache.org/jira/browse/HADOOP-12735) | core-default.xml misspells hadoop.workaround.non.threadsafe.getpwuid |  Minor | . | Ray Chiang | Ray Chiang |
+| [MAPREDUCE-6619](https://issues.apache.org/jira/browse/MAPREDUCE-6619) | HADOOP\_CLASSPATH is overwritten in MR container |  Major | mrv2 | shanyu zhao | Junping Du |
+| [HDFS-8999](https://issues.apache.org/jira/browse/HDFS-8999) | Allow a file to be closed with COMMITTED but not yet COMPLETE blocks. |  Major | namenode | Jitendra Nath Pandey | Tsz Wo Nicholas Sze |
+| [MAPREDUCE-6595](https://issues.apache.org/jira/browse/MAPREDUCE-6595) | Fix findbugs warnings in OutputCommitter and FileOutputCommitter |  Major | . | Akira Ajisaka | Akira Ajisaka |
+| [MAPREDUCE-6563](https://issues.apache.org/jira/browse/MAPREDUCE-6563) | Streaming documentation contains a stray '%' character. |  Trivial | documentation | Chris Nauroth | Chris Nauroth |
+| [YARN-4519](https://issues.apache.org/jira/browse/YARN-4519) | potential deadlock of CapacityScheduler between decrease container and assign containers |  Major | capacityscheduler | sandflee | MENG DING |
+| [MAPREDUCE-6616](https://issues.apache.org/jira/browse/MAPREDUCE-6616) | Fail to create jobhistory file if there are some multibyte characters in the job name |  Major | jobhistoryserver | Akira Ajisaka | Kousuke Saruta |
+| [YARN-4411](https://issues.apache.org/jira/browse/YARN-4411) | RMAppAttemptImpl#createApplicationAttemptReport throws IllegalArgumentException |  Major | resourcemanager | yarntime | Bibin A Chundatt |
+| [YARN-4617](https://issues.apache.org/jira/browse/YARN-4617) | LeafQueue#pendingOrderingPolicy should always use fixed ordering policy instead of using same as active applications ordering policy |  Major | capacity scheduler | Rohith Sharma K S | Rohith Sharma K S |
+| [YARN-4428](https://issues.apache.org/jira/browse/YARN-4428) | Redirect RM page to AHS page when AHS turned on and RM page is not available |  Major | . | Chang Li | Chang Li |
+| [MAPREDUCE-6618](https://issues.apache.org/jira/browse/MAPREDUCE-6618) | YarnClientProtocolProvider leaking the YarnClient thread. |  Major | . | Xuan Gong | Xuan Gong |
+| [HDFS-9210](https://issues.apache.org/jira/browse/HDFS-9210) | Fix some misuse of %n in VolumeScanner#printStats |  Minor | datanode | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-9701](https://issues.apache.org/jira/browse/HDFS-9701) | DN may deadlock when hot-swapping under load |  Major | . | Xiao Chen | Xiao Chen |
+| [YARN-3102](https://issues.apache.org/jira/browse/YARN-3102) | Decommisioned Nodes not listed in Web UI |  Minor | resourcemanager | Bibin A Chundatt | Kuhu Shukla |
+| [HDFS-9406](https://issues.apache.org/jira/browse/HDFS-9406) | FSImage may get corrupted after deleting snapshot |  Major | namenode | Stanislav Antic | Yongjun Zhang |
+| [HDFS-9718](https://issues.apache.org/jira/browse/HDFS-9718) | HAUtil#getConfForOtherNodes should unset independent generic keys before initialize |  Major | namenode | DENG FEI | DENG FEI |
+| [HDFS-9708](https://issues.apache.org/jira/browse/HDFS-9708) | FSNamesystem.initAuditLoggers() doesn't trim classnames |  Minor | fs | Steve Loughran | Mingliang Liu |
+| [MAPREDUCE-6621](https://issues.apache.org/jira/browse/MAPREDUCE-6621) | Memory Leak in JobClient#submitJobInternal() |  Major | . | Xuan Gong | Xuan Gong |
+| [HADOOP-12755](https://issues.apache.org/jira/browse/HADOOP-12755) | Fix typo in defaultFS warning message |  Trivial | . | Andrew Wang | Andrew Wang |
+| [HDFS-9739](https://issues.apache.org/jira/browse/HDFS-9739) | DatanodeStorage.isValidStorageId() is broken |  Critical | hdfs-client | Kihwal Lee | Mingliang Liu |
+| [HDFS-9740](https://issues.apache.org/jira/browse/HDFS-9740) | Use a reasonable limit in DFSTestUtil.waitForMetric() |  Major | test | Kihwal Lee | Chang Li |
+| [HADOOP-12761](https://issues.apache.org/jira/browse/HADOOP-12761) | incremental maven build is not really incremental |  Minor | build | Sangjin Lee | Sangjin Lee |
+| [HDFS-9748](https://issues.apache.org/jira/browse/HDFS-9748) | When addExpectedReplicasToPending is called twice, pendingReplications should avoid duplication |  Minor | . | Walter Su | Walter Su |
+| [HDFS-9730](https://issues.apache.org/jira/browse/HDFS-9730) | Storage ID update does not happen when there is a layout change |  Major | datanode | Kihwal Lee | Tsz Wo Nicholas Sze |
+| [HDFS-9724](https://issues.apache.org/jira/browse/HDFS-9724) | Degraded performance in WebHDFS listing as it does not reuse ObjectMapper |  Critical | performance | Akira Ajisaka | Akira Ajisaka |
+| [HADOOP-12766](https://issues.apache.org/jira/browse/HADOOP-12766) | The default value of "hadoop.workaround.non.threadsafe.getpwuid" is different between core-default.xml and NativeIO.java |  Minor | . | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-9761](https://issues.apache.org/jira/browse/HDFS-9761) | Rebalancer sleeps too long between iterations |  Blocker | balancer & mover | Adrian Bridgett | Mingliang Liu |
+| [HDFS-9713](https://issues.apache.org/jira/browse/HDFS-9713) | DataXceiver#copyBlock should return if block is pinned |  Major | datanode | Uma Maheswara Rao G | Uma Maheswara Rao G |
+| [HADOOP-12773](https://issues.apache.org/jira/browse/HADOOP-12773) | HBase classes fail to load with client/job classloader enabled |  Major | util | Sangjin Lee | Sangjin Lee |
+| [HDFS-9777](https://issues.apache.org/jira/browse/HDFS-9777) | Fix typos in DFSAdmin command line and documentation |  Trivial | hdfs-client | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9784](https://issues.apache.org/jira/browse/HDFS-9784) | Example usage is not correct in Transparent Encryption document |  Major | documentation | Takashi Ohnishi | Takashi Ohnishi |
+| [HDFS-9752](https://issues.apache.org/jira/browse/HDFS-9752) | Permanent write failures may happen to slow writers during datanode rolling upgrades |  Critical | . | Kihwal Lee | Walter Su |
+| [HDFS-9760](https://issues.apache.org/jira/browse/HDFS-9760) | WebHDFS AuthFilter cannot be configured with custom AltKerberos auth handler |  Major | webhdfs | Ryan Sasson | Ryan Sasson |
+| [HDFS-9779](https://issues.apache.org/jira/browse/HDFS-9779) | TestReplicationPolicyWithNodeGroup NODE variable picks wrong rack value |  Minor | test | Kuhu Shukla | Kuhu Shukla |
+| [HADOOP-12792](https://issues.apache.org/jira/browse/HADOOP-12792) | TestUserGroupInformation#testGetServerSideGroups fails in chroot |  Minor | security, test | Eric Badger | Eric Badger |
+| [HDFS-9788](https://issues.apache.org/jira/browse/HDFS-9788) | Incompatible tag renumbering in HeartbeatResponseProto |  Blocker | rolling upgrades | Andrew Wang | Andrew Wang |
+| [HADOOP-12795](https://issues.apache.org/jira/browse/HADOOP-12795) | KMS does not log detailed stack trace for unexpected errors. |  Major | kms | Chris Nauroth | Chris Nauroth |
+| [HADOOP-12699](https://issues.apache.org/jira/browse/HADOOP-12699) | TestKMS#testKMSProvider intermittently fails during 'test rollover draining' |  Major | . | Xiao Chen | Xiao Chen |
+| [HDFS-9790](https://issues.apache.org/jira/browse/HDFS-9790) | HDFS Balancer should exit with a proper message if upgrade is not finalized |  Major | . | Xiaobing Zhou | Xiaobing Zhou |
+| [HDFS-9801](https://issues.apache.org/jira/browse/HDFS-9801) | ReconfigurableBase should update the cached configuration |  Major | datanode | Arpit Agarwal | Arpit Agarwal |
+| [HADOOP-12780](https://issues.apache.org/jira/browse/HADOOP-12780) | During WASB atomic rename handle crash when one directory has been renamed but not file under it. |  Critical | fs/azure | madhumita chakraborty | madhumita chakraborty |
+| [HADOOP-12589](https://issues.apache.org/jira/browse/HADOOP-12589) | Fix intermittent test failure of TestCopyPreserveFlag |  Major | test | Tsuyoshi Ozawa | Masatake Iwasaki |
+| [HADOOP-12786](https://issues.apache.org/jira/browse/HADOOP-12786) | "hadoop key" command usage is not documented |  Major | documentation | Akira Ajisaka | Xiao Chen |
+| [HDFS-9765](https://issues.apache.org/jira/browse/HDFS-9765) | TestBlockScanner#testVolumeIteratorWithCaching fails intermittently |  Major | test | Mingliang Liu | Akira Ajisaka |
+| [HDFS-9456](https://issues.apache.org/jira/browse/HDFS-9456) | BlockPlacementPolicyWithNodeGroup should override verifyBlockPlacement |  Major | . | Junping Du | Xiaobing Zhou |
+| [HADOOP-12810](https://issues.apache.org/jira/browse/HADOOP-12810) | FileSystem#listLocatedStatus causes unnecessary RPC calls |  Major | fs, fs/s3 | Ryan Blue | Ryan Blue |
+| [MAPREDUCE-6341](https://issues.apache.org/jira/browse/MAPREDUCE-6341) | Fix typo in mapreduce tutorial |  Trivial | . | John Michael Luy | John Michael Luy |
+| [HADOOP-12787](https://issues.apache.org/jira/browse/HADOOP-12787) | KMS SPNEGO sequence does not work with WEBHDFS |  Major | kms, security | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-9815](https://issues.apache.org/jira/browse/HDFS-9815) | Move o.a.h.fs.Hdfs to hadoop-hdfs-client |  Blocker | . | Haohui Mai | Vinayakumar B |
+| [HDFS-9799](https://issues.apache.org/jira/browse/HDFS-9799) | Reimplement getCurrentTrashDir to remove incompatibility |  Blocker | . | Zhe Zhang | Zhe Zhang |
+| [YARN-4654](https://issues.apache.org/jira/browse/YARN-4654) | Yarn node label CLI should parse "=" correctly when trying to remove all labels on a node |  Major | . | Wangda Tan | Naganarasimha G R |
+| [HDFS-6832](https://issues.apache.org/jira/browse/HDFS-6832) | Fix the usage of 'hdfs namenode' command |  Minor | . | Akira Ajisaka | Manjunath Ballur |
+| [HDFS-8923](https://issues.apache.org/jira/browse/HDFS-8923) | Add -source flag to balancer usage message |  Trivial | balancer & mover, documentation | Chris Trezzo | Chris Trezzo |
+| [HDFS-9764](https://issues.apache.org/jira/browse/HDFS-9764) | DistCp doesn't print value for several arguments including -numListstatusThreads |  Minor | distcp | Yongjun Zhang | Wei-Chiu Chuang |
+| [MAPREDUCE-6637](https://issues.apache.org/jira/browse/MAPREDUCE-6637) | Testcase Failure : TestFileInputFormat.testSplitLocationInfo |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-9839](https://issues.apache.org/jira/browse/HDFS-9839) | Reduce verbosity of processReport logging |  Major | namenode | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-7452](https://issues.apache.org/jira/browse/HDFS-7452) | skip StandbyException log for getCorruptFiles() |  Minor | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4707](https://issues.apache.org/jira/browse/YARN-4707) | Remove the extra char (\>) from SecureContainer.md |  Major | documentation | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4386](https://issues.apache.org/jira/browse/YARN-4386) | refreshNodesGracefully() should send recommission event to active RMNodes only |  Minor | graceful | Kuhu Shukla | Kuhu Shukla |
+| [HDFS-9842](https://issues.apache.org/jira/browse/HDFS-9842) | dfs.datanode.balance.bandwidthPerSec should accept friendly size units |  Minor | balancer & mover | Yiqun Lin | Yiqun Lin |
+| [YARN-4709](https://issues.apache.org/jira/browse/YARN-4709) | NMWebServices produces incorrect JSON for containers |  Critical | . | Varun Saxena | Varun Saxena |
+| [MAPREDUCE-6635](https://issues.apache.org/jira/browse/MAPREDUCE-6635) | Unsafe long to int conversion in UncompressedSplitLineReader and IndexOutOfBoundsException |  Critical | . | Sergey Shelukhin | Junping Du |
+| [HDFS-9549](https://issues.apache.org/jira/browse/HDFS-9549) | TestCacheDirectives#testExceedsCapacity is flaky |  Major | . | Wei-Chiu Chuang | Xiao Chen |
+| [YARN-2046](https://issues.apache.org/jira/browse/YARN-2046) | Out of band heartbeats are sent only on container kill and possibly too early |  Major | nodemanager | Jason Lowe | Ming Ma |
+| [HDFS-9844](https://issues.apache.org/jira/browse/HDFS-9844) | Correct path creation in getTrashRoot to handle root dir |  Blocker | encryption | Zhe Zhang | Zhe Zhang |
+| [YARN-4722](https://issues.apache.org/jira/browse/YARN-4722) | AsyncDispatcher logs redundant event queue sizes |  Major | . | Jason Lowe | Jason Lowe |
+| [HADOOP-12716](https://issues.apache.org/jira/browse/HADOOP-12716) | KerberosAuthenticator#doSpnegoSequence use incorrect class to determine isKeyTab in JDK8 |  Major | security | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-9855](https://issues.apache.org/jira/browse/HDFS-9855) | Modify TestAuditLoggerWithCommands to workaround the absence of HDFS-8332 |  Major | test | Kuhu Shukla | Kuhu Shukla |
+| [YARN-4723](https://issues.apache.org/jira/browse/YARN-4723) | NodesListManager$UnknownNodeId ClassCastException |  Critical | resourcemanager | Jason Lowe | Kuhu Shukla |
+| [HADOOP-12849](https://issues.apache.org/jira/browse/HADOOP-12849) | TestSymlinkLocalFSFileSystem fails intermittently |  Major | test | Mingliang Liu | Mingliang Liu |
+| [HADOOP-12831](https://issues.apache.org/jira/browse/HADOOP-12831) | LocalFS/FSOutputSummer NPEs in constructor if bytes per checksum  set to 0 |  Minor | fs | Steve Loughran | Mingliang Liu |
+| [HADOOP-12846](https://issues.apache.org/jira/browse/HADOOP-12846) | Credential Provider Recursive Dependencies |  Major | . | Larry McCay | Larry McCay |
+| [HDFS-9864](https://issues.apache.org/jira/browse/HDFS-9864) | Correct reference for RENEWDELEGATIONTOKEN and CANCELDELEGATIONTOKEN in webhdfs doc |  Major | documentation | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12622](https://issues.apache.org/jira/browse/HADOOP-12622) | RetryPolicies (other than FailoverOnNetworkExceptionRetry) should put on retry failed reason or the log from RMProxy's retry could be very misleading. |  Critical | auto-failover | Junping Du | Junping Du |
+| [YARN-4748](https://issues.apache.org/jira/browse/YARN-4748) | ApplicationHistoryManagerOnTimelineStore should not swallow exceptions on generateApplicationReport |  Major | timelineserver | Li Lu | Li Lu |
+| [HADOOP-12851](https://issues.apache.org/jira/browse/HADOOP-12851) | S3AFileSystem Uptake of ProviderUtils.excludeIncompatibleCredentialProviders |  Major | fs/s3 | Larry McCay | Larry McCay |
+| [HADOOP-12843](https://issues.apache.org/jira/browse/HADOOP-12843) | Fix findbugs warnings in hadoop-common (branch-2) |  Major | . | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-9870](https://issues.apache.org/jira/browse/HDFS-9870) | Remove unused imports from DFSUtil |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-8791](https://issues.apache.org/jira/browse/HDFS-8791) | block ID-based DN storage layout can be very slow for datanode on ext4 |  Blocker | datanode | Nathan Roberts | Chris Trezzo |
+| [HDFS-9880](https://issues.apache.org/jira/browse/HDFS-9880) | TestDatanodeRegistration fails occasionally |  Major | test | Kihwal Lee | Kihwal Lee |
+| [HDFS-9881](https://issues.apache.org/jira/browse/HDFS-9881) | DistributedFileSystem#getTrashRoot returns incorrect path for encryption zones |  Critical | . | Andrew Wang | Andrew Wang |
+| [HDFS-9766](https://issues.apache.org/jira/browse/HDFS-9766) | TestDataNodeMetrics#testDataNodeTimeSpend fails intermittently |  Major | test | Mingliang Liu | Xiao Chen |
+| [HDFS-9851](https://issues.apache.org/jira/browse/HDFS-9851) | Name node throws NPE when setPermission is called on a path that does not exist |  Critical | namenode | David Yan | Brahma Reddy Battula |
+| [HDFS-9886](https://issues.apache.org/jira/browse/HDFS-9886) | Configuration properties for hedged read is broken |  Blocker | . | Akira Ajisaka | Akira Ajisaka |
+| [HADOOP-12870](https://issues.apache.org/jira/browse/HADOOP-12870) | Fix typo admininistration in CommandsManual.md |  Minor | documentation | Akira Ajisaka | John Zhuge |
+| [HDFS-9048](https://issues.apache.org/jira/browse/HDFS-9048) | DistCp documentation is out-of-dated |  Major | . | Haohui Mai | Daisuke Kobayashi |
+| [HADOOP-12871](https://issues.apache.org/jira/browse/HADOOP-12871) | Fix dead link to NativeLibraries.html in CommandsManual.md |  Minor | documentation | Akira Ajisaka | Brahma Reddy Battula |
+| [HADOOP-12872](https://issues.apache.org/jira/browse/HADOOP-12872) | Fix formatting in ServiceLevelAuth.md |  Trivial | documentation | Akira Ajisaka | Brahma Reddy Battula |
+| [MAPREDUCE-4785](https://issues.apache.org/jira/browse/MAPREDUCE-4785) | TestMRApp occasionally fails |  Major | mrv2, test | Jason Lowe | Haibo Chen |
+| [HADOOP-12717](https://issues.apache.org/jira/browse/HADOOP-12717) | NPE when trying to rename a directory in Windows Azure Storage FileSystem |  Blocker | . | Robert Yokota | Robert Yokota |
+| [YARN-4763](https://issues.apache.org/jira/browse/YARN-4763) | RMApps Page crashes with NPE |  Major | webapp | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-4761](https://issues.apache.org/jira/browse/YARN-4761) | NMs reconnecting with changed capabilities can lead to wrong cluster resource calculations on fair scheduler |  Major | fairscheduler | Sangjin Lee | Sangjin Lee |
+| [YARN-4744](https://issues.apache.org/jira/browse/YARN-4744) | Too many signal to container failure in case of LCE |  Major | . | Bibin A Chundatt | Sidharta Seethana |
+| [YARN-4760](https://issues.apache.org/jira/browse/YARN-4760) | proxy redirect to history server uses wrong URL |  Major | webapp | Jason Lowe | Eric Badger |
+| [HDFS-9865](https://issues.apache.org/jira/browse/HDFS-9865) | TestBlockReplacement fails intermittently in trunk |  Major | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-9812](https://issues.apache.org/jira/browse/HDFS-9812) | Streamer threads leak if failure happens when closing DFSOutputStream |  Major | hdfs-client | Yiqun Lin | Yiqun Lin |
+| [HADOOP-12688](https://issues.apache.org/jira/browse/HADOOP-12688) | Fix deadlinks in Compatibility.md |  Major | documentation | Akira Ajisaka | Gabor Liptak |
+| [HADOOP-12903](https://issues.apache.org/jira/browse/HADOOP-12903) | IPC Server should allow suppressing exception logging by type, not log 'server too busy' messages |  Major | ipc | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-9934](https://issues.apache.org/jira/browse/HDFS-9934) | ReverseXML oiv processor should bail out if the XML file's layoutVersion doesn't match oiv's |  Major | tools | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-9933](https://issues.apache.org/jira/browse/HDFS-9933) | ReverseXML should be capitalized in oiv usage message |  Minor | tools | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-9953](https://issues.apache.org/jira/browse/HDFS-9953) | Download File from UI broken after pagination |  Blocker | namenode | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-9904](https://issues.apache.org/jira/browse/HDFS-9904) | testCheckpointCancellationDuringUpload occasionally fails |  Major | test | Kihwal Lee | Yiqun Lin |
+| [MAPREDUCE-6579](https://issues.apache.org/jira/browse/MAPREDUCE-6579) | JobStatus#getFailureInfo should not output diagnostic information when the job is running |  Blocker | test | Rohith Sharma K S | Akira Ajisaka |
+| [MAPREDUCE-6645](https://issues.apache.org/jira/browse/MAPREDUCE-6645) | TestWordStats outputs logs under directories other than target/test-dir |  Major | test | Akira Ajisaka | Gabor Liptak |
+| [HDFS-9874](https://issues.apache.org/jira/browse/HDFS-9874) | Long living DataXceiver threads cause volume shutdown to block. |  Critical | datanode | Rushabh S Shah | Rushabh S Shah |
+| [HDFS-3677](https://issues.apache.org/jira/browse/HDFS-3677) | dfs.namenode.edits.dir.required missing from hdfs-default.xml |  Major | documentation, namenode | Todd Lipcon | Mark Yang |
+| [HDFS-7166](https://issues.apache.org/jira/browse/HDFS-7166) | SbNN Web UI shows #Under replicated blocks and #pending deletion blocks |  Major | ha | Juan Yu | Wei-Chiu Chuang |
+| [YARN-4686](https://issues.apache.org/jira/browse/YARN-4686) | MiniYARNCluster.start() returns before cluster is completely started |  Major | test | Rohith Sharma K S | Eric Badger |
+| [MAPREDUCE-6363](https://issues.apache.org/jira/browse/MAPREDUCE-6363) | [NNBench] Lease mismatch error when running with multiple mappers |  Critical | benchmarks | Brahma Reddy Battula | Bibin A Chundatt |
+| [HDFS-10189](https://issues.apache.org/jira/browse/HDFS-10189) | PacketResponder#toString should include the downstreams for PacketResponderType.HAS\_DOWNSTREAM\_IN\_PIPELINE |  Minor | datanode | Joe Pallas | Joe Pallas |
+| [MAPREDUCE-6580](https://issues.apache.org/jira/browse/MAPREDUCE-6580) | Test failure : TestMRJobsWithProfiler |  Major | . | Rohith Sharma K S | Eric Badger |
+| [MAPREDUCE-6656](https://issues.apache.org/jira/browse/MAPREDUCE-6656) | [NNBench] OP\_DELETE operation isn't working after MAPREDUCE-6363 |  Blocker | . | J.Andreina | J.Andreina |
+| [HDFS-10193](https://issues.apache.org/jira/browse/HDFS-10193) | fuse\_dfs segfaults if uid cannot be resolved to a username |  Major | fuse-dfs | John Thiltges | John Thiltges |
+| [HDFS-10199](https://issues.apache.org/jira/browse/HDFS-10199) | Unit tests TestCopyFiles, TestDistCh, TestLogalyzer under org.apache.hadoop.tools are failing |  Minor | . | Tibor Kiss | Tibor Kiss |
+| [YARN-4820](https://issues.apache.org/jira/browse/YARN-4820) | ResourceManager web redirects in HA mode drops query parameters |  Major | . | Varun Vasudev | Varun Vasudev |
+| [YARN-4850](https://issues.apache.org/jira/browse/YARN-4850) | test-fair-scheduler.xml isn't valid xml |  Blocker | fairscheduler, test | Allen Wittenauer | Yufei Gu |
+| [HADOOP-12962](https://issues.apache.org/jira/browse/HADOOP-12962) | KMS key names are incorrectly encoded when creating key |  Major | . | Xiao Chen | Xiao Chen |
+| [HADOOP-12958](https://issues.apache.org/jira/browse/HADOOP-12958) | PhantomReference for filesystem statistics can trigger OOM |  Major | . | Jason Lowe | Sangjin Lee |
+| [HADOOP-12873](https://issues.apache.org/jira/browse/HADOOP-12873) | Remove MRv1 terms from HttpAuthentication.md |  Major | documentation | Akira Ajisaka | Brahma Reddy Battula |
+| [HDFS-10182](https://issues.apache.org/jira/browse/HDFS-10182) | Hedged read might overwrite user's buf |  Major | . | zhouyingchao | zhouyingchao |
+| [YARN-4773](https://issues.apache.org/jira/browse/YARN-4773) | Log aggregation performs extraneous filesystem operations when rolling log aggregation is disabled |  Minor | nodemanager | Jason Lowe | Jun Gong |
+| [MAPREDUCE-6662](https://issues.apache.org/jira/browse/MAPREDUCE-6662) | Clear ASF Warnings on test data files |  Minor | . | Vinayakumar B | Vinayakumar B |
+| [HDFS-9871](https://issues.apache.org/jira/browse/HDFS-9871) | "Bytes Being Moved" -ve(-1 B) when cluster was already balanced. |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-4863](https://issues.apache.org/jira/browse/YARN-4863) | AHS Security login should be in serviceInit() instead of serviceStart() |  Major | timelineserver | Junping Du | Junping Du |
+| [HDFS-10197](https://issues.apache.org/jira/browse/HDFS-10197) | TestFsDatasetCache failing intermittently due to timeout |  Major | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-9478](https://issues.apache.org/jira/browse/HDFS-9478) | Reason for failing ipc.FairCallQueue contruction should be thrown |  Minor | . | Archana T | Ajith S |
+| [HDFS-10228](https://issues.apache.org/jira/browse/HDFS-10228) | TestHDFSCLI fails |  Major | test | Akira Ajisaka | Akira Ajisaka |
+| [YARN-4865](https://issues.apache.org/jira/browse/YARN-4865) | Track Reserved resources in ResourceUsage and QueueCapacities |  Major | resourcemanager | Sunil G | Sunil G |
+| [HADOOP-12972](https://issues.apache.org/jira/browse/HADOOP-12972) | Lz4Compressor#getLibraryName returns the wrong version number |  Trivial | native | John Zhuge | Colin P. McCabe |
+| [HDFS-5177](https://issues.apache.org/jira/browse/HDFS-5177) | blocksScheduled  count should be decremented for abandoned blocks |  Major | namenode | Vinayakumar B | Vinayakumar B |
+| [HDFS-10223](https://issues.apache.org/jira/browse/HDFS-10223) | peerFromSocketAndKey performs SASL exchange before setting connection timeouts |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-10221](https://issues.apache.org/jira/browse/HDFS-10221) | Add .json to the rat exclusions |  Blocker | build | Ming Ma | Ming Ma |
+| [HADOOP-12902](https://issues.apache.org/jira/browse/HADOOP-12902) | JavaDocs for SignerSecretProvider are out-of-date in AuthenticationFilter |  Major | documentation | Robert Kanter | Gabor Liptak |
+| [YARN-4183](https://issues.apache.org/jira/browse/YARN-4183) | Clarify the behavior of timeline service config properties |  Major | . | Mit Desai | Naganarasimha G R |
+| [HDFS-10253](https://issues.apache.org/jira/browse/HDFS-10253) | Fix TestRefreshCallQueue failure. |  Major | . | Brahma Reddy Battula | Xiaoyu Yao |
+| [YARN-4746](https://issues.apache.org/jira/browse/YARN-4746) | yarn web services should convert parse failures of appId, appAttemptId and containerId to 400 |  Minor | webapp | Steve Loughran | Bibin A Chundatt |
+| [HDFS-9599](https://issues.apache.org/jira/browse/HDFS-9599) | TestDecommissioningStatus.testDecommissionStatus occasionally fails |  Major | namenode | Wei-Chiu Chuang | Yiqun Lin |
+| [YARN-4706](https://issues.apache.org/jira/browse/YARN-4706) | UI Hosting Configuration in TimelineServer doc is broken |  Critical | documentation | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-10178](https://issues.apache.org/jira/browse/HDFS-10178) | Permanent write failures can happen if pipeline recoveries occur for the first packet |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8496](https://issues.apache.org/jira/browse/HDFS-8496) | Calling stopWriter() with FSDatasetImpl lock held may block other threads |  Major | . | zhouyingchao | Colin P. McCabe |
+| [HDFS-9917](https://issues.apache.org/jira/browse/HDFS-9917) | IBR accumulate more objects when SNN was down for sometime. |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10239](https://issues.apache.org/jira/browse/HDFS-10239) | Fsshell mv fails if port usage doesn't match in src and destination paths |  Major | . | Kuhu Shukla | Kuhu Shukla |
+| [YARN-4893](https://issues.apache.org/jira/browse/YARN-4893) | Fix some intermittent test failures in TestRMAdminService |  Blocker | . | Junping Du | Brahma Reddy Battula |
+| [YARN-4916](https://issues.apache.org/jira/browse/YARN-4916) | TestNMProxy.tesNMProxyRPCRetry fails. |  Minor | . | Tibor Kiss | Tibor Kiss |
+| [YARN-4915](https://issues.apache.org/jira/browse/YARN-4915) | Fix typo in YARN Secure Containers documentation |  Trivial | documentation, yarn | Takashi Ohnishi | Takashi Ohnishi |
+| [YARN-4917](https://issues.apache.org/jira/browse/YARN-4917) | Fix typos in documentation of Capacity Scheduler. |  Minor | documentation | Takashi Ohnishi | Takashi Ohnishi |
+| [HDFS-10261](https://issues.apache.org/jira/browse/HDFS-10261) | TestBookKeeperHACheckpoints doesn't handle ephemeral HTTP ports |  Major | . | Eric Badger | Eric Badger |
+| [YARN-4699](https://issues.apache.org/jira/browse/YARN-4699) | Scheduler UI and REST o/p is not in sync when -replaceLabelsOnNode is used to change label of a node |  Critical | capacity scheduler | Sunil G | Sunil G |
+| [HADOOP-12022](https://issues.apache.org/jira/browse/HADOOP-12022) | fix site -Pdocs -Pdist in hadoop-project-dist; cleanout remaining forrest bits |  Blocker | build | Allen Wittenauer | Allen Wittenauer |
+| [MAPREDUCE-6670](https://issues.apache.org/jira/browse/MAPREDUCE-6670) | TestJobListCache#testEviction sometimes fails on Windows with timeout |  Minor | test | Gergely Novák | Gergely Novák |
+| [HDFS-6520](https://issues.apache.org/jira/browse/HDFS-6520) | hdfs fsck -move passes invalid length value when creating BlockReader |  Major | . | Shengjun Xin | Xiao Chen |
+| [HDFS-10267](https://issues.apache.org/jira/browse/HDFS-10267) | Extra "synchronized" on FsDatasetImpl#recoverAppend and FsDatasetImpl#recoverClose |  Major | datanode | Colin P. McCabe | Colin P. McCabe |
+| [YARN-4740](https://issues.apache.org/jira/browse/YARN-4740) | AM may not receive the container complete msg when it restarts |  Major | . | sandflee | sandflee |
+| [MAPREDUCE-6633](https://issues.apache.org/jira/browse/MAPREDUCE-6633) | AM should retry map attempts if the reduce task encounters commpression related errors. |  Major | . | Rushabh S Shah | Rushabh S Shah |
+| [YARN-4938](https://issues.apache.org/jira/browse/YARN-4938) | MiniYarnCluster should not request transitionToActive to RM on non-HA environment |  Major | test | Akira Ajisaka | Eric Badger |
+| [HADOOP-12406](https://issues.apache.org/jira/browse/HADOOP-12406) | AbstractMapWritable.readFields throws ClassNotFoundException with custom writables |  Blocker | io | Nadeem Douba | Nadeem Douba |
+| [HADOOP-12993](https://issues.apache.org/jira/browse/HADOOP-12993) | Change ShutdownHookManger complete shutdown log from INFO to DEBUG |  Minor | . | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-10277](https://issues.apache.org/jira/browse/HDFS-10277) | PositionedReadable test testReadFullyZeroByteFile failing in HDFS |  Major | test | Steve Loughran | Steve Loughran |
+| [HDFS-10271](https://issues.apache.org/jira/browse/HDFS-10271) | Extra bytes are getting released from reservedSpace for append |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-12964](https://issues.apache.org/jira/browse/HADOOP-12964) | Http server vulnerable to clickjacking |  Major | . | Haibo Chen | Haibo Chen |
+| [YARN-4794](https://issues.apache.org/jira/browse/YARN-4794) | Deadlock in NMClientImpl |  Critical | . | Sumana Sathish | Jian He |
+| [HDFS-9772](https://issues.apache.org/jira/browse/HDFS-9772) | TestBlockReplacement#testThrottler doesn't work as expected |  Minor | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-10270](https://issues.apache.org/jira/browse/HDFS-10270) | TestJMXGet:testNameNode() fails |  Minor | test | Andras Bokor | Gergely Novák |
+| [HDFS-10216](https://issues.apache.org/jira/browse/HDFS-10216) | distcp -diff relative path exception |  Major | distcp | John Zhuge | Takashi Ohnishi |
+| [YARN-4924](https://issues.apache.org/jira/browse/YARN-4924) | NM recovery race can lead to container not cleaned up |  Major | nodemanager | Nathan Roberts | sandflee |
+| [HADOOP-12989](https://issues.apache.org/jira/browse/HADOOP-12989) | Some tests in org.apache.hadoop.fs.shell.find occasionally time out |  Major | test | Akira Ajisaka | Takashi Ohnishi |
+| [HADOOP-13026](https://issues.apache.org/jira/browse/HADOOP-13026) | Should not wrap IOExceptions into a AuthenticationException in KerberosAuthenticator |  Critical | . | Xuan Gong | Xuan Gong |
+| [YARN-4940](https://issues.apache.org/jira/browse/YARN-4940) | yarn node -list -all failed if RM start with decommissioned node |  Major | . | sandflee | sandflee |
+| [YARN-4965](https://issues.apache.org/jira/browse/YARN-4965) | Distributed shell AM failed due to ClientHandlerException thrown by jersey |  Critical | . | Sumana Sathish | Junping Du |
+| [YARN-4934](https://issues.apache.org/jira/browse/YARN-4934) | Reserved Resource for QueueMetrics needs to be handled correctly in few cases |  Major | capacity scheduler | Sunil G | Sunil G |
+| [HDFS-10291](https://issues.apache.org/jira/browse/HDFS-10291) | TestShortCircuitLocalRead failing |  Major | test | Steve Loughran | Steve Loughran |
+| [HDFS-10275](https://issues.apache.org/jira/browse/HDFS-10275) | TestDataNodeMetrics failing intermittently due to TotalWriteTime counted incorrectly |  Major | test | Yiqun Lin | Yiqun Lin |
+| [MAPREDUCE-6649](https://issues.apache.org/jira/browse/MAPREDUCE-6649) | getFailureInfo not returning any failure info |  Major | . | Eric Badger | Eric Badger |
+| [HDFS-10265](https://issues.apache.org/jira/browse/HDFS-10265) | OEV tool fails to read edit xml file if OP\_UPDATE\_BLOCKS has no BLOCK tag |  Minor | tools | Wan Chang | Wan Chang |
+| [HDFS-9744](https://issues.apache.org/jira/browse/HDFS-9744) | TestDirectoryScanner#testThrottling occasionally time out after 300 seconds |  Minor | datanode | Wei-Chiu Chuang | Yiqun Lin |
+| [HDFS-10308](https://issues.apache.org/jira/browse/HDFS-10308) | TestRetryCacheWithHA#testRetryCacheOnStandbyNN failing |  Major | test | Rakesh R | Rakesh R |
+| [HDFS-10312](https://issues.apache.org/jira/browse/HDFS-10312) | Large block reports may fail to decode at NameNode due to 64 MB protobuf maximum length restriction. |  Major | namenode | Chris Nauroth | Chris Nauroth |
+| [MAPREDUCE-6680](https://issues.apache.org/jira/browse/MAPREDUCE-6680) | JHS UserLogDir scan algorithm sometime could skip directory with update in CloudFS (Azure FileSystem, S3, etc.) |  Major | jobhistoryserver | Junping Du | Junping Du |
+| [HDFS-9670](https://issues.apache.org/jira/browse/HDFS-9670) | DistCp throws NPE when source is root |  Major | distcp | Yongjun Zhang | John Zhuge |
+| [HADOOP-13042](https://issues.apache.org/jira/browse/HADOOP-13042) | Restore lost leveldbjni LICENSE and NOTICE changes |  Major | . | Andrew Wang | Andrew Wang |
+| [HADOOP-13043](https://issues.apache.org/jira/browse/HADOOP-13043) | Add LICENSE.txt entries for bundled javascript dependencies |  Major | . | Andrew Wang | Andrew Wang |
+| [HDFS-10319](https://issues.apache.org/jira/browse/HDFS-10319) | Balancer should not try to pair storages with different types |  Minor | balancer & mover | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-10309](https://issues.apache.org/jira/browse/HDFS-10309) | Balancer doesn't honor dfs.blocksize value defined with suffix k(kilo), m(mega), g(giga) |  Minor | balancer & mover | Amit Anand | Amit Anand |
+| [HDFS-9555](https://issues.apache.org/jira/browse/HDFS-9555) | LazyPersistFileScrubber should still sleep if there are errors in the clear progress |  Major | . | Phil Yang | Phil Yang |
+| [HADOOP-13052](https://issues.apache.org/jira/browse/HADOOP-13052) | ChecksumFileSystem mishandles crc file permissions |  Major | fs | Daryn Sharp | Daryn Sharp |
+| [HDFS-9905](https://issues.apache.org/jira/browse/HDFS-9905) | WebHdfsFileSystem#runWithRetry should display original stack trace on error |  Major | test | Kihwal Lee | Wei-Chiu Chuang |
+| [HADOOP-11418](https://issues.apache.org/jira/browse/HADOOP-11418) | Property "io.compression.codec.lzo.class" does not work with other value besides default |  Major | io | fang fang chen | Yuanbo Liu |
+| [HDFS-10318](https://issues.apache.org/jira/browse/HDFS-10318) | TestJMXGet hides the real error in case of test failure |  Minor | test | Andras Bokor | Andras Bokor |
+| [YARN-4556](https://issues.apache.org/jira/browse/YARN-4556) |  TestFifoScheduler.testResourceOverCommit fails |  Major | scheduler, test | Akihiro Suda | Akihiro Suda |
+| [HDFS-10329](https://issues.apache.org/jira/browse/HDFS-10329) | Bad initialisation of StringBuffer in RequestHedgingProxyProvider.java |  Minor | ha | Max Schaefer | Yiqun Lin |
+| [HDFS-10313](https://issues.apache.org/jira/browse/HDFS-10313) | Distcp need to enforce the order of snapshot names passed to -diff |  Major | distcp | Yongjun Zhang | Yiqun Lin |
+| [MAPREDUCE-6199](https://issues.apache.org/jira/browse/MAPREDUCE-6199) | AbstractCounters are not reset completely on deserialization |  Major | . | Anubhav Dhoot | Anubhav Dhoot |
+| [HADOOP-13030](https://issues.apache.org/jira/browse/HADOOP-13030) | Handle special characters in passwords in KMS startup script |  Major | kms | Xiao Chen | Xiao Chen |
+| [YARN-4955](https://issues.apache.org/jira/browse/YARN-4955) | Add retry for SocketTimeoutException in TimelineClient |  Critical | . | Xuan Gong | Xuan Gong |
+| [HDFS-9958](https://issues.apache.org/jira/browse/HDFS-9958) | BlockManager#createLocatedBlocks can throw NPE for corruptBlocks on failed storages. |  Major | . | Kuhu Shukla | Kuhu Shukla |
+| [YARN-5008](https://issues.apache.org/jira/browse/YARN-5008) | LeveldbRMStateStore database can grow substantially leading to long recovery times |  Major | resourcemanager | Jason Lowe | Jason Lowe |
+| [YARN-5009](https://issues.apache.org/jira/browse/YARN-5009) | NMLeveldbStateStoreService database can grow substantially leading to longer recovery times |  Major | nodemanager | Jason Lowe | Jason Lowe |
+| [HADOOP-12378](https://issues.apache.org/jira/browse/HADOOP-12378) | Fix findbugs warnings in hadoop-tools module |  Major | tools | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-10260](https://issues.apache.org/jira/browse/HDFS-10260) | TestFsDatasetImpl#testCleanShutdownOfVolume often fails |  Major | datanode, test | Wei-Chiu Chuang | Rushabh S Shah |
+| [HDFS-10335](https://issues.apache.org/jira/browse/HDFS-10335) | Mover$Processor#chooseTarget() always chooses the first matching target storage group |  Critical | balancer & mover | Mingliang Liu | Mingliang Liu |
+| [MAPREDUCE-6672](https://issues.apache.org/jira/browse/MAPREDUCE-6672) | TestTeraSort fails on Windows |  Minor | test | Tibor Kiss | Tibor Kiss |
+| [HDFS-10347](https://issues.apache.org/jira/browse/HDFS-10347) | Namenode report bad block method doesn't log the bad block or datanode. |  Minor | namenode | Rushabh S Shah | Rushabh S Shah |
+| [HADOOP-13072](https://issues.apache.org/jira/browse/HADOOP-13072) | WindowsGetSpaceUsed constructor should be public |  Major | . | Vinayakumar B | Vinayakumar B |
+| [MAPREDUCE-6537](https://issues.apache.org/jira/browse/MAPREDUCE-6537) | Include hadoop-pipes examples in the release tarball |  Blocker | pipes | Allen Wittenauer | Kai Sasaki |
+| [HDFS-10353](https://issues.apache.org/jira/browse/HDFS-10353) | Fix hadoop-hdfs-native-client compilation on Windows |  Blocker | build | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10344](https://issues.apache.org/jira/browse/HDFS-10344) | DistributedFileSystem#getTrashRoots should skip encryption zone that does not have .Trash |  Major | . | Namit Maheshwari | Xiaoyu Yao |
+| [HADOOP-13080](https://issues.apache.org/jira/browse/HADOOP-13080) | Refresh time in SysInfoWindows is in nanoseconds |  Major | util | Inigo Goiri | Inigo Goiri |
+| [YARN-4834](https://issues.apache.org/jira/browse/YARN-4834) | ProcfsBasedProcessTree doesn't track daemonized processes |  Major | nodemanager | Nathan Roberts | Nathan Roberts |
+| [HDFS-10320](https://issues.apache.org/jira/browse/HDFS-10320) | Rack failures may result in NN terminate |  Major | . | Xiao Chen | Xiao Chen |
+| [MAPREDUCE-6675](https://issues.apache.org/jira/browse/MAPREDUCE-6675) | TestJobImpl.testUnusableNode failed |  Major | mrv2 | Haibo Chen | Haibo Chen |
+| [YARN-4311](https://issues.apache.org/jira/browse/YARN-4311) | Removing nodes from include and exclude lists will not remove them from decommissioned nodes list |  Major | . | Kuhu Shukla | Kuhu Shukla |
+| [YARN-4984](https://issues.apache.org/jira/browse/YARN-4984) | LogAggregationService shouldn't swallow exception in handling createAppDir() which cause thread leak. |  Critical | log-aggregation | Junping Du | Junping Du |
+| [HADOOP-13098](https://issues.apache.org/jira/browse/HADOOP-13098) | Dynamic LogLevel setting page should accept case-insensitive log level string |  Major | . | Junping Du | Junping Du |
+| [HDFS-10324](https://issues.apache.org/jira/browse/HDFS-10324) | Trash directory in an encryption zone should be pre-created with correct permissions |  Major | encryption | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [MAPREDUCE-6514](https://issues.apache.org/jira/browse/MAPREDUCE-6514) | Job hangs as ask is not updated after ramping down of all reducers |  Blocker | applicationmaster | Varun Saxena | Varun Saxena |
+| [HDFS-2043](https://issues.apache.org/jira/browse/HDFS-2043) | TestHFlush failing intermittently |  Major | test | Aaron T. Myers | Yiqun Lin |
+| [HADOOP-12751](https://issues.apache.org/jira/browse/HADOOP-12751) | While using kerberos Hadoop incorrectly assumes names with '@' to be non-simple |  Critical | security | Bolke de Bruin | Bolke de Bruin |
+| [MAPREDUCE-6689](https://issues.apache.org/jira/browse/MAPREDUCE-6689) | MapReduce job can infinitely increase number of reducer resource requests |  Blocker | . | Wangda Tan | Wangda Tan |
+| [YARN-4747](https://issues.apache.org/jira/browse/YARN-4747) | AHS error 500 due to NPE when container start event is missing |  Major | timelineserver | Jason Lowe | Varun Saxena |
+| [HDFS-9939](https://issues.apache.org/jira/browse/HDFS-9939) | Increase DecompressorStream skip buffer size |  Major | . | Yongjun Zhang | John Zhuge |
+| [YARN-5048](https://issues.apache.org/jira/browse/YARN-5048) | DelegationTokenRenewer#skipTokenRenewal may throw NPE |  Major | . | Jian He | Jian He |
+| [YARN-4926](https://issues.apache.org/jira/browse/YARN-4926) | Change nodelabel rest API invalid reponse status to 400 |  Major | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-10372](https://issues.apache.org/jira/browse/HDFS-10372) | Fix for failing TestFsDatasetImpl#testCleanShutdownOfVolume |  Major | test | Rushabh S Shah | Rushabh S Shah |
+| [MAPREDUCE-6684](https://issues.apache.org/jira/browse/MAPREDUCE-6684) | High contention on scanning of user directory under immediate\_done in Job History Server |  Critical | jobhistoryserver | Haibo Chen | Haibo Chen |
+| [HDFS-6187](https://issues.apache.org/jira/browse/HDFS-6187) | Update the document of hftp/hsftp in branch-2 to mention that they are deprecated |  Major | . | Haohui Mai | Gergely Novák |
+| [YARN-4768](https://issues.apache.org/jira/browse/YARN-4768) | getAvailablePhysicalMemorySize can be inaccurate on linux |  Major | nodemanager | Nathan Roberts | Nathan Roberts |
+| [HADOOP-13125](https://issues.apache.org/jira/browse/HADOOP-13125) | FS Contract tests don't report FS initialization errors well |  Minor | test | Steve Loughran | Steve Loughran |
+| [YARN-5029](https://issues.apache.org/jira/browse/YARN-5029) | RM needs to send update event with YarnApplicationState as Running to ATS/AHS |  Critical | . | Xuan Gong | Xuan Gong |
+| [HADOOP-13116](https://issues.apache.org/jira/browse/HADOOP-13116) | Jets3tNativeS3FileSystemContractTest does not run. |  Minor | test | Chris Nauroth | Chris Nauroth |
+| [MAPREDUCE-6639](https://issues.apache.org/jira/browse/MAPREDUCE-6639) | Process hangs in LocatedFileStatusFetcher if FileSystem.get throws |  Major | mrv2 | Ryan Blue | Ryan Blue |
+| [HADOOP-11180](https://issues.apache.org/jira/browse/HADOOP-11180) | Change log message "token.Token: Cannot find class for token kind kms-dt" to debug |  Major | kms, security | Yi Liu | Yi Liu |
+| [MAPREDUCE-6558](https://issues.apache.org/jira/browse/MAPREDUCE-6558) | multibyte delimiters with compressed input files generate duplicate records |  Major | mrv1, mrv2 | Wilfred Spiegelenburg | Wilfred Spiegelenburg |
+| [HADOOP-13083](https://issues.apache.org/jira/browse/HADOOP-13083) | The number of javadocs warnings is limited to 100 |  Critical | . | Li Lu | Gergely Novák |
+| [MAPREDUCE-6513](https://issues.apache.org/jira/browse/MAPREDUCE-6513) | MR job got hanged forever when one NM unstable for some time |  Critical | applicationmaster, resourcemanager | Bob.zhao | Varun Saxena |
+| [HDFS-10333](https://issues.apache.org/jira/browse/HDFS-10333) | Intermittent org.apache.hadoop.hdfs.TestFileAppend failure in trunk |  Major | hdfs | Yongjun Zhang | Yiqun Lin |
+| [HADOOP-12942](https://issues.apache.org/jira/browse/HADOOP-12942) | hadoop credential commands non-obviously use password of "none" |  Major | security | Mike Yoder | Mike Yoder |
+| [YARN-4325](https://issues.apache.org/jira/browse/YARN-4325) | Nodemanager log handlers fail to send finished/failed events in some cases |  Critical | . | Junping Du | Junping Du |
+| [HDFS-10242](https://issues.apache.org/jira/browse/HDFS-10242) | Cannot create space quota of zero |  Major | documentation, fs | Takashi Ohnishi | Takashi Ohnishi |
+| [MAPREDUCE-6693](https://issues.apache.org/jira/browse/MAPREDUCE-6693) | ArrayIndexOutOfBoundsException occurs when the length of the job name is equal to mapreduce.jobhistory.jobname.limit |  Critical | . | Bibin A Chundatt | Ajith S |
+| [HADOOP-13163](https://issues.apache.org/jira/browse/HADOOP-13163) | Reuse pre-computed filestatus in Distcp-CopyMapper |  Minor | tools/distcp | Rajesh Balamohan | Rajesh Balamohan |
+| [HDFS-10303](https://issues.apache.org/jira/browse/HDFS-10303) | DataStreamer#ResponseProcessor calculates packet ack latency incorrectly. |  Major | hdfs-client | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [MAPREDUCE-6698](https://issues.apache.org/jira/browse/MAPREDUCE-6698) | Increase timeout on TestUnnecessaryBlockingOnHistoryFileInfo.testTwoThreadsQueryingDifferentJobOfSameUser |  Major | jobhistoryserver | Haibo Chen | Haibo Chen |
+| [HADOOP-13159](https://issues.apache.org/jira/browse/HADOOP-13159) | Fix potential NPE in Metrics2 source for DecayRpcScheduler |  Major | ipc | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-10397](https://issues.apache.org/jira/browse/HDFS-10397) | Distcp should ignore -delete option if -diff option is provided instead of exiting |  Major | distcp | Mingliang Liu | Mingliang Liu |
+| [HDFS-10381](https://issues.apache.org/jira/browse/HDFS-10381) | DataStreamer DataNode exclusion log message should be warning |  Minor | hdfs-client | John Zhuge | John Zhuge |
+| [HDFS-9226](https://issues.apache.org/jira/browse/HDFS-9226) | MiniDFSCluster leaks dependency Mockito via DataNodeTestUtils |  Major | test | Josh Elser | Josh Elser |
+| [HADOOP-13138](https://issues.apache.org/jira/browse/HADOOP-13138) | Unable to append to a SequenceFile with Compression.NONE. |  Critical | . | Gervais Mickaël | Vinayakumar B |
+| [YARN-4925](https://issues.apache.org/jira/browse/YARN-4925) | ContainerRequest in AMRMClient, application should be able to specify nodes/racks together with nodeLabelExpression |  Major | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HADOOP-13157](https://issues.apache.org/jira/browse/HADOOP-13157) | Follow-on improvements to hadoop credential commands |  Major | security | Mike Yoder | Mike Yoder |
+| [YARN-3840](https://issues.apache.org/jira/browse/YARN-3840) | Resource Manager web ui issue when sorting application by id (with application having id \> 9999) |  Major | resourcemanager | LINTE | Varun Saxena |
+| [HADOOP-13177](https://issues.apache.org/jira/browse/HADOOP-13177) | Native tests fail on OS X, because DYLD\_LIBRARY\_PATH is not defined to include libhadoop.dylib. |  Minor | build | Chris Nauroth | Chris Nauroth |
+| [HADOOP-12767](https://issues.apache.org/jira/browse/HADOOP-12767) | update apache httpclient version to 4.5.2; httpcore to 4.4.4 |  Major | build | Artem Aliev | Artem Aliev |
+| [YARN-5100](https://issues.apache.org/jira/browse/YARN-5100) | The YarnApplicationState is always running in ATS no matter the application is running or finishes. |  Blocker | . | Xuan Gong | Xuan Gong |
+| [HADOOP-13183](https://issues.apache.org/jira/browse/HADOOP-13183) | S3A proxy tests fail after httpclient/httpcore upgrade. |  Major | fs/s3 | Chris Nauroth | Steve Loughran |
+| [YARN-5020](https://issues.apache.org/jira/browse/YARN-5020) | Fix Documentation for Yarn Capacity Scheduler on Resource Calculator |  Minor | . | Jo Desmet | Takashi Ohnishi |
+| [HDFS-10424](https://issues.apache.org/jira/browse/HDFS-10424) | DatanodeLifelineProtocol not able to use under security cluster |  Blocker | . | gu-chi | Chris Nauroth |
+| [HDFS-10438](https://issues.apache.org/jira/browse/HDFS-10438) | When NameNode HA is configured to use the lifeline RPC server, it should log the address of that server. |  Minor | ha, namenode | KWON BYUNGCHANG | Chris Nauroth |
+| [HDFS-10439](https://issues.apache.org/jira/browse/HDFS-10439) | Update setOwner doc in HdfsPermissionsGuide |  Minor | documentation | John Zhuge | John Zhuge |
+| [MAPREDUCE-6607](https://issues.apache.org/jira/browse/MAPREDUCE-6607) | Enable regex pattern matching when mapreduce.task.files.preserve.filepattern is set |  Minor | applicationmaster | Maysam Yabandeh | Kai Sasaki |
+| [YARN-5103](https://issues.apache.org/jira/browse/YARN-5103) | With NM recovery enabled, restarting NM multiple times results in AM restart |  Critical | yarn | Sumana Sathish | Junping Du |
+| [YARN-5055](https://issues.apache.org/jira/browse/YARN-5055) | max apps per user can be larger than max per queue |  Minor | capacityscheduler, resourcemanager | Jason Lowe | Eric Badger |
+| [YARN-3971](https://issues.apache.org/jira/browse/YARN-3971) | Skip RMNodeLabelsManager#checkRemoveFromClusterNodeLabelsOfQueue on nodelabel recovery |  Critical | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-9365](https://issues.apache.org/jira/browse/HDFS-9365) | Balancer does not work with the HDFS-6376 HA setup |  Major | balancer & mover | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [YARN-3344](https://issues.apache.org/jira/browse/YARN-3344) | Fix warning - procfs stat file is not in the expected format |  Major | . | Jon Bringhurst | Ravindra Kumar Naik |
+| [YARN-4459](https://issues.apache.org/jira/browse/YARN-4459) | container-executor should only kill process groups |  Major | nodemanager | Jun Gong | Jun Gong |
+| [YARN-5166](https://issues.apache.org/jira/browse/YARN-5166) | javadoc:javadoc goal fails on hadoop-yarn-client |  Major | . | Andras Bokor | Andras Bokor |
+| [HDFS-10276](https://issues.apache.org/jira/browse/HDFS-10276) | HDFS should not expose path info that user has no permission to see. |  Major | . | Kevin Cox | Yuanbo Liu |
+| [YARN-5132](https://issues.apache.org/jira/browse/YARN-5132) | Exclude generated protobuf sources from YARN Javadoc build |  Critical | . | Subru Krishnan | Subru Krishnan |
+| [HADOOP-13132](https://issues.apache.org/jira/browse/HADOOP-13132) | Handle ClassCastException on AuthenticationException in LoadBalancingKMSClientProvider |  Major | kms | Miklos Szurap | Wei-Chiu Chuang |
+| [HDFS-10415](https://issues.apache.org/jira/browse/HDFS-10415) | TestDistributedFileSystem#MyDistributedFileSystem attempts to set up statistics before initialize() is called |  Major | test | Sangjin Lee | Mingliang Liu |
+| [HADOOP-13137](https://issues.apache.org/jira/browse/HADOOP-13137) | TraceAdmin should support Kerberized cluster |  Major | tracing | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9476](https://issues.apache.org/jira/browse/HDFS-9476) | TestDFSUpgradeFromImage#testUpgradeFromRel1BBWImage occasionally fail |  Major | . | Wei-Chiu Chuang | Masatake Iwasaki |
+| [HDFS-10367](https://issues.apache.org/jira/browse/HDFS-10367) | TestDFSShell.testMoveWithTargetPortEmpty fails with Address bind exception. |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10471](https://issues.apache.org/jira/browse/HDFS-10471) | DFSAdmin#SetQuotaCommand's help msg is not correct |  Minor | documentation | Yiqun Lin | Yiqun Lin |
+| [YARN-5098](https://issues.apache.org/jira/browse/YARN-5098) | Yarn Application log Aggreagation fails due to NM can not get correct HDFS delegation token |  Major | yarn | Yesha Vora | Jian He |
+| [HADOOP-13155](https://issues.apache.org/jira/browse/HADOOP-13155) | Implement TokenRenewer to renew and cancel delegation tokens in KMS |  Major | kms, security | Xiao Chen | Xiao Chen |
+| [HDFS-10481](https://issues.apache.org/jira/browse/HDFS-10481) | HTTPFS server should correctly impersonate as end user to open file |  Major | httpfs | Xiao Chen | Xiao Chen |
+| [HDFS-10485](https://issues.apache.org/jira/browse/HDFS-10485) | Fix findbugs warning in FSEditLog.java |  Major | . | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-10458](https://issues.apache.org/jira/browse/HDFS-10458) | getFileEncryptionInfo should return quickly for non-encrypted cluster |  Major | encryption, namenode | Zhe Zhang | Zhe Zhang |
+| [YARN-5206](https://issues.apache.org/jira/browse/YARN-5206) | RegistrySecurity includes id:pass in exception text if considered invalid |  Minor | client, security | Steve Loughran | Steve Loughran |
+| [HDFS-10220](https://issues.apache.org/jira/browse/HDFS-10220) | A large number of expired leases can make namenode unresponsive and cause failover |  Major | namenode | Nicolas Fraison | Nicolas Fraison |
+| [HADOOP-13249](https://issues.apache.org/jira/browse/HADOOP-13249) | RetryInvocationHandler need wrap InterruptedException in IOException when call Thread.sleep |  Major | ipc | zhihai xu | zhihai xu |
+| [HADOOP-13213](https://issues.apache.org/jira/browse/HADOOP-13213) | Small Documentation bug with AuthenticatedURL in hadoop-auth |  Minor | documentation | Tom Ellis | Tom Ellis |
+| [HADOOP-13079](https://issues.apache.org/jira/browse/HADOOP-13079) | Add -q option to Ls to print ? instead of non-printable characters |  Major | . | John Zhuge | John Zhuge |
+| [HDFS-10516](https://issues.apache.org/jira/browse/HDFS-10516) | Fix bug when warming up EDEK cache of more than one encryption zone |  Major | encryption, namenode | Xiao Chen | Xiao Chen |
+| [HADOOP-13270](https://issues.apache.org/jira/browse/HADOOP-13270) | BZip2CompressionInputStream finds the same compression marker twice in corner case, causing duplicate data blocks |  Critical | . | Haibo Chen | Kai Sasaki |
+| [HADOOP-13179](https://issues.apache.org/jira/browse/HADOOP-13179) | GenericOptionsParser is not thread-safe because commons-cli OptionBuilder is not thread-safe |  Minor | . | hongbin ma | hongbin ma |
+| [HADOOP-13244](https://issues.apache.org/jira/browse/HADOOP-13244) | o.a.h.ipc.Server#Server should honor handlerCount when queueSizePerHandler is specified in consturctor |  Minor | ipc | Xiaoyu Yao | Kai Sasaki |
+| [HADOOP-13245](https://issues.apache.org/jira/browse/HADOOP-13245) | Fix up some misc create-release issues |  Blocker | build | Allen Wittenauer | Allen Wittenauer |
+| [HDFS-10505](https://issues.apache.org/jira/browse/HDFS-10505) | OIV's ReverseXML processor should support ACLs |  Major | tools | Colin P. McCabe | Surendra Singh Lilhore |
+| [HDFS-10525](https://issues.apache.org/jira/browse/HDFS-10525) | Fix NPE in CacheReplicationMonitor#rescanCachedBlockMap |  Major | caching | Xiao Chen | Xiao Chen |
+| [YARN-5237](https://issues.apache.org/jira/browse/YARN-5237) | Fix missing log files issue in rolling log aggregation. |  Major | . | Siddharth Seth | Xuan Gong |
+| [HDFS-10532](https://issues.apache.org/jira/browse/HDFS-10532) | Typo in RollingUpgrade docs |  Major | documentation | Arpit Agarwal | Yiqun Lin |
+| [HADOOP-3733](https://issues.apache.org/jira/browse/HADOOP-3733) | "s3:" URLs break when Secret Key contains a slash, even if encoded |  Minor | fs/s3 | Stuart Sierra | Steve Loughran |
+| [HDFS-9466](https://issues.apache.org/jira/browse/HDFS-9466) | TestShortCircuitCache#testDataXceiverCleansUpSlotsOnFailure is flaky |  Major | fs, hdfs-client | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-13255](https://issues.apache.org/jira/browse/HADOOP-13255) | KMSClientProvider should check and renew tgt when doing delegation token operations. |  Major | kms | Xiao Chen | Xiao Chen |
+| [HADOOP-13285](https://issues.apache.org/jira/browse/HADOOP-13285) | DecayRpcScheduler MXBean should only report decayed CallVolumeSummary |  Major | ipc | Namit Maheshwari | Xiaoyu Yao |
+| [HADOOP-13149](https://issues.apache.org/jira/browse/HADOOP-13149) | Windows distro build fails on dist-copynativelibs. |  Blocker | build | Chris Nauroth | Chris Nauroth |
+| [YARN-5246](https://issues.apache.org/jira/browse/YARN-5246) | NMWebAppFilter web redirects drop query parameters |  Major | . | Varun Vasudev | Varun Vasudev |
+| [HDFS-10474](https://issues.apache.org/jira/browse/HDFS-10474) | hftp copy fails when file name with Chinese+special char in branch-2 |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13192](https://issues.apache.org/jira/browse/HADOOP-13192) | org.apache.hadoop.util.LineReader cannot handle multibyte delimiters correctly |  Critical | util | binde | binde |
+| [HDFS-10448](https://issues.apache.org/jira/browse/HDFS-10448) | CacheManager#addInternal tracks bytesNeeded incorrectly when dealing with replication factors other than 1 |  Major | caching | Yiqun Lin | Yiqun Lin |
+| [YARN-5197](https://issues.apache.org/jira/browse/YARN-5197) | RM leaks containers if running container disappears from node update |  Major | resourcemanager | Jason Lowe | Jason Lowe |
+| [HADOOP-13287](https://issues.apache.org/jira/browse/HADOOP-13287) | TestS3ACredentials#testInstantiateFromURL fails if AWS secret key contains '+'. |  Minor | fs/s3, test | Chris Nauroth | Chris Nauroth |
+| [HDFS-10556](https://issues.apache.org/jira/browse/HDFS-10556) | DistCpOptions should be validated automatically |  Major | distcp | Mingliang Liu | Mingliang Liu |
+| [MAPREDUCE-6725](https://issues.apache.org/jira/browse/MAPREDUCE-6725) | Javadoc for CLI#listEvents() contains no-existent param |  Minor | client, documentation | Shen Yinjie | Shen Yinjie |
+| [HDFS-7959](https://issues.apache.org/jira/browse/HDFS-7959) | WebHdfs logging is missing on Datanode |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [MAPREDUCE-6542](https://issues.apache.org/jira/browse/MAPREDUCE-6542) | HistoryViewer uses SimpleDateFormat, but SimpleDateFormat is not threadsafe |  Major | jobhistoryserver | zhangyubiao | zhangyubiao |
+| [HADOOP-13251](https://issues.apache.org/jira/browse/HADOOP-13251) | Authenticate with Kerberos credentials when renewing KMS delegation token |  Major | kms | Xiao Chen | Xiao Chen |
+| [HADOOP-13316](https://issues.apache.org/jira/browse/HADOOP-13316) | Enforce Kerberos authentication for required ops in DelegationTokenAuthenticator |  Blocker | kms, security | Xiao Chen | Xiao Chen |
+| [HDFS-9852](https://issues.apache.org/jira/browse/HDFS-9852) | hdfs dfs -setfacl error message is misleading |  Minor | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-5262](https://issues.apache.org/jira/browse/YARN-5262) | Optimize sending RMNodeFinishedContainersPulledByAMEvent for every AM heartbeat |  Major | resourcemanager | Rohith Sharma K S | Rohith Sharma K S |
+| [HADOOP-12345](https://issues.apache.org/jira/browse/HADOOP-12345) | Pad hostname correctly in CredentialsSys.java |  Critical | nfs | Pradeep Nayak Udupi Kadbet | Pradeep Nayak Udupi Kadbet |
+| [HADOOP-13314](https://issues.apache.org/jira/browse/HADOOP-13314) | Remove 'package-info.java' from 'test\java\org\apache\hadoop\fs\shell\' to remove eclipse compile error |  Trivial | . | Vinayakumar B | Vinayakumar B |
+| [HDFS-10589](https://issues.apache.org/jira/browse/HDFS-10589) | Javadoc for HAState#HAState and HAState#setStateInternal contains non-existent params |  Minor | documentation, hdfs | Shen Yinjie | Shen Yinjie |
+| [YARN-5286](https://issues.apache.org/jira/browse/YARN-5286) | Add RPC port info in RM web service's response when getting app status |  Major | . | Jun Gong | Jun Gong |
+| [YARN-5214](https://issues.apache.org/jira/browse/YARN-5214) | Pending on synchronized method DirectoryCollection#checkDirs can hang NM's NodeStatusUpdater |  Critical | nodemanager | Junping Du | Junping Du |
+| [HADOOP-13350](https://issues.apache.org/jira/browse/HADOOP-13350) | Additional fix to LICENSE and NOTICE |  Blocker | build | Xiao Chen | Xiao Chen |
+| [HDFS-10592](https://issues.apache.org/jira/browse/HDFS-10592) | Fix intermittent test failure of TestNameNodeResourceChecker#testCheckThatNameNodeResourceMonitorIsRunning |  Major | test | Rakesh R | Rakesh R |
+| [HADOOP-13320](https://issues.apache.org/jira/browse/HADOOP-13320) | Fix arguments check in documentation for WordCount v2.0 |  Minor | documentation | niccolo becchi | niccolo becchi |
+| [YARN-5314](https://issues.apache.org/jira/browse/YARN-5314) | ConcurrentModificationException in ATS v1.5 EntityGroupFSTimelineStore |  Major | timelineserver | Karam Singh | Li Lu |
+| [YARN-4939](https://issues.apache.org/jira/browse/YARN-4939) | the decommissioning Node should keep alive  if NM restart |  Major | . | sandflee | sandflee |
+| [HADOOP-12893](https://issues.apache.org/jira/browse/HADOOP-12893) | Verify LICENSE.txt and NOTICE.txt |  Blocker | build | Allen Wittenauer | Xiao Chen |
+| [HADOOP-13352](https://issues.apache.org/jira/browse/HADOOP-13352) | Make X-FRAME-OPTIONS configurable in HttpServer2 |  Major | net, security | Anu Engineer | Anu Engineer |
+| [HDFS-10336](https://issues.apache.org/jira/browse/HDFS-10336) | TestBalancer failing intermittently because of not reseting UserGroupInformation completely |  Major | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-10512](https://issues.apache.org/jira/browse/HDFS-10512) | VolumeScanner may terminate due to NPE in DataNode.reportBadBlocks |  Major | datanode | Wei-Chiu Chuang | Yiqun Lin |
+| [YARN-5337](https://issues.apache.org/jira/browse/YARN-5337) | Fix OOM issue in DistributedShell. AM failed with "java.lang.OutOfMemoryError: GC overhead limit exceeded" |  Major | . | Sumana Sathish | Jian He |
+| [HADOOP-13297](https://issues.apache.org/jira/browse/HADOOP-13297) | Add missing dependency in setting maven-remote-resource-plugin to fix builds |  Major | build | Akira Ajisaka | Sean Busbey |
+| [YARN-5270](https://issues.apache.org/jira/browse/YARN-5270) | Solve miscellaneous issues caused by YARN-4844 |  Blocker | . | Wangda Tan | Wangda Tan |
+| [HDFS-10579](https://issues.apache.org/jira/browse/HDFS-10579) | HDFS web interfaces lack configs for X-FRAME-OPTIONS protection |  Major | datanode, namenode | Anu Engineer | Anu Engineer |
+| [MAPREDUCE-6625](https://issues.apache.org/jira/browse/MAPREDUCE-6625) | TestCLI#testGetJob fails occasionally |  Major | test | Jason Lowe | Haibo Chen |
+| [HADOOP-13315](https://issues.apache.org/jira/browse/HADOOP-13315) | FileContext#umask is not initialized properly |  Minor | . | John Zhuge | John Zhuge |
+| [YARN-5353](https://issues.apache.org/jira/browse/YARN-5353) | ResourceManager can leak delegation tokens when they are shared across apps |  Critical | resourcemanager | Jason Lowe | Jason Lowe |
+| [HADOOP-11361](https://issues.apache.org/jira/browse/HADOOP-11361) | Fix a race condition in MetricsSourceAdapter.updateJmxCache |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10544](https://issues.apache.org/jira/browse/HDFS-10544) | Balancer doesn't work with IPFailoverProxyProvider |  Major | balancer & mover, ha | Zhe Zhang | Zhe Zhang |
+| [HADOOP-13351](https://issues.apache.org/jira/browse/HADOOP-13351) | TestDFSClientSocketSize buffer size tests are flaky |  Major | . | Aaron Fabbri | Aaron Fabbri |
+| [HADOOP-13202](https://issues.apache.org/jira/browse/HADOOP-13202) | Avoid possible overflow in org.apache.hadoop.util.bloom.BloomFilter#getNBytes |  Major | util | zhengbing li | Kai Sasaki |
+| [HDFS-10603](https://issues.apache.org/jira/browse/HDFS-10603) | Fix flaky tests in org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot |  Major | hdfs, namenode | Yongjun Zhang | Yiqun Lin |
+| [HADOOP-12991](https://issues.apache.org/jira/browse/HADOOP-12991) | Conflicting default ports in DelegateToFileSystem |  Major | fs | Kevin Hogeland | Kai Sasaki |
+| [YARN-5309](https://issues.apache.org/jira/browse/YARN-5309) | Fix SSLFactory truststore reloader thread leak in TimelineClientImpl |  Blocker | timelineserver, yarn | Thomas Friedrich | Weiwei Yang |
+| [HADOOP-13387](https://issues.apache.org/jira/browse/HADOOP-13387) | users always get told off for using S3 —even when not using it. |  Minor | fs/s3 | Steve Loughran | Steve Loughran |
+| [YARN-5340](https://issues.apache.org/jira/browse/YARN-5340) | Race condition in RollingLevelDBTimelineStore#getAndSetStartTime() |  Critical | timelineserver | Sumana Sathish | Li Lu |
+| [HDFS-8914](https://issues.apache.org/jira/browse/HDFS-8914) | Document HA support in the HDFS HdfsDesign.md |  Major | documentation | Ravindra Babu | Lars Francke |
+| [HADOOP-12588](https://issues.apache.org/jira/browse/HADOOP-12588) | Fix intermittent test failure of TestGangliaMetrics |  Major | . | Tsuyoshi Ozawa | Masatake Iwasaki |
+| [HADOOP-13240](https://issues.apache.org/jira/browse/HADOOP-13240) | TestAclCommands.testSetfaclValidations fail |  Minor | test | linbao111 | John Zhuge |
+| [HADOOP-13389](https://issues.apache.org/jira/browse/HADOOP-13389) | TestS3ATemporaryCredentials.testSTS error when using IAM credentials |  Major | fs/s3 | Steven K. Wong | Steven K. Wong |
+| [HADOOP-13406](https://issues.apache.org/jira/browse/HADOOP-13406) | S3AFileSystem: Consider reusing filestatus in delete() and mkdirs() |  Minor | fs/s3 | Rajesh Balamohan | Rajesh Balamohan |
+| [MAPREDUCE-6744](https://issues.apache.org/jira/browse/MAPREDUCE-6744) | Increase timeout on TestDFSIO tests |  Major | . | Eric Badger | Eric Badger |
+| [HDFS-10688](https://issues.apache.org/jira/browse/HDFS-10688) | BPServiceActor may run into a tight loop for sending block report when hitting IOException |  Major | datanode | Jing Zhao | Chen Liang |
+| [HDFS-10671](https://issues.apache.org/jira/browse/HDFS-10671) | Fix typo in HdfsRollingUpgrade.md |  Trivial | documentation | Yiqun Lin | Yiqun Lin |
+| [HADOOP-13422](https://issues.apache.org/jira/browse/HADOOP-13422) | ZKDelegationTokenSecretManager JaasConfig does not work well with other ZK users in process |  Major | . | Sergey Shelukhin | Sergey Shelukhin |
+| [HDFS-10696](https://issues.apache.org/jira/browse/HDFS-10696) | TestHDFSCLI fails |  Major | test | Akira Ajisaka | Kai Sasaki |
+| [YARN-5432](https://issues.apache.org/jira/browse/YARN-5432) | Lock already held by another process while LevelDB cache store creation for dag |  Critical | timelineserver | Karam Singh | Li Lu |
+| [YARN-5438](https://issues.apache.org/jira/browse/YARN-5438) | TimelineClientImpl leaking FileSystem Instances causing Long running services like HiverServer2 daemon going OOM |  Major | timelineserver | Karam Singh | Rohith Sharma K S |
+| [HADOOP-13381](https://issues.apache.org/jira/browse/HADOOP-13381) | KMS clients should use KMS Delegation Tokens from current UGI. |  Critical | kms | Xiao Chen | Xiao Chen |
+| [HDFS-10691](https://issues.apache.org/jira/browse/HDFS-10691) | FileDistribution fails in hdfs oiv command due to ArrayIndexOutOfBoundsException |  Major | . | Yiqun Lin | Yiqun Lin |
+| [YARN-5121](https://issues.apache.org/jira/browse/YARN-5121) | fix some container-executor portability issues |  Blocker | nodemanager, security | Allen Wittenauer | Allen Wittenauer |
+| [MAPREDUCE-6724](https://issues.apache.org/jira/browse/MAPREDUCE-6724) | Single shuffle to memory must not exceed Integer#MAX\_VALUE |  Major | mrv2 | Haibo Chen | Haibo Chen |
+| [HDFS-5805](https://issues.apache.org/jira/browse/HDFS-5805) | TestCheckpoint.testCheckpoint fails intermittently on branch2 |  Major | . | Mit Desai | Eric Badger |
+| [HADOOP-13459](https://issues.apache.org/jira/browse/HADOOP-13459) | hadoop-azure runs several test cases repeatedly, causing unnecessarily long running time. |  Minor | fs/azure, test | Chris Nauroth | Chris Nauroth |
+| [HDFS-742](https://issues.apache.org/jira/browse/HDFS-742) | A down DataNode makes Balancer to hang on repeatingly asking NameNode its partial block list |  Minor | balancer & mover | Hairong Kuang | Mit Desai |
+| [YARN-4280](https://issues.apache.org/jira/browse/YARN-4280) | CapacityScheduler reservations may not prevent indefinite postponement on a busy cluster |  Major | capacity scheduler | Kuhu Shukla | Kuhu Shukla |
+| [YARN-5462](https://issues.apache.org/jira/browse/YARN-5462) | TestNodeStatusUpdater.testNodeStatusUpdaterRetryAndNMShutdown fails intermittently |  Major | . | Eric Badger | Eric Badger |
+| [HDFS-10710](https://issues.apache.org/jira/browse/HDFS-10710) | In BlockManager#rescanPostponedMisreplicatedBlocks(), postponed misreplicated block counts should be retrieved with NN lock protection |  Major | namenode | Rui Gao | Rui Gao |
+| [YARN-5469](https://issues.apache.org/jira/browse/YARN-5469) | Increase timeout of TestAmFilter.testFilter |  Minor | . | Eric Badger | Eric Badger |
+| [HDFS-10569](https://issues.apache.org/jira/browse/HDFS-10569) | A bug causes OutOfIndex error in BlockListAsLongs |  Minor | . | Weiwei Yang | Weiwei Yang |
+| [HADOOP-13434](https://issues.apache.org/jira/browse/HADOOP-13434) | Add quoting to Shell class |  Major | . | Owen O'Malley | Owen O'Malley |
+| [MAPREDUCE-6682](https://issues.apache.org/jira/browse/MAPREDUCE-6682) | TestMRCJCFileOutputCommitter fails intermittently |  Major | test | Brahma Reddy Battula | Akira Ajisaka |
+| [HDFS-10716](https://issues.apache.org/jira/browse/HDFS-10716) | In Balancer, the target task should be removed when its size \< 0. |  Minor | balancer & mover | Yiqun Lin | Yiqun Lin |
+| [HDFS-10722](https://issues.apache.org/jira/browse/HDFS-10722) | Fix race condition in TestEditLog#testBatchedSyncWithClosedLogs |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13467](https://issues.apache.org/jira/browse/HADOOP-13467) | Shell#getSignalKillCommand should use the bash builtin on Linux |  Major | . | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-10717](https://issues.apache.org/jira/browse/HDFS-10717) | Fix findbugs warnings of hadoop-hdfs-client in branch-2 |  Major | . | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-10343](https://issues.apache.org/jira/browse/HDFS-10343) | BlockManager#createLocatedBlocks may return blocks on failed storages |  Major | hdfs | Daryn Sharp | Kuhu Shukla |
+| [HDFS-10715](https://issues.apache.org/jira/browse/HDFS-10715) | NPE when applying AvailableSpaceBlockPlacementPolicy |  Major | namenode | Guangbin Zhu | Guangbin Zhu |
+| [YARN-4624](https://issues.apache.org/jira/browse/YARN-4624) | NPE in PartitionQueueCapacitiesInfo while accessing Schduler UI |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-10823](https://issues.apache.org/jira/browse/HADOOP-10823) | TestReloadingX509TrustManager is flaky |  Major | . | Ratandeep Ratti | Mingliang Liu |
+| [HADOOP-13457](https://issues.apache.org/jira/browse/HADOOP-13457) | Remove hardcoded absolute path for shell executable |  Major | util | Arpit Agarwal | Chen Liang |
+| [HADOOP-13439](https://issues.apache.org/jira/browse/HADOOP-13439) | Fix race between TestMetricsSystemImpl and TestGangliaMetrics |  Minor | test | Masatake Iwasaki | Chen Liang |
+| [MAPREDUCE-6750](https://issues.apache.org/jira/browse/MAPREDUCE-6750) | TestHSAdminServer.testRefreshSuperUserGroups is failing |  Minor | test | Kihwal Lee | Kihwal Lee |
+| [HADOOP-13473](https://issues.apache.org/jira/browse/HADOOP-13473) | Tracing in IPC Server is broken |  Major | . | Wei-Chiu Chuang | Daryn Sharp |
+| [HDFS-10738](https://issues.apache.org/jira/browse/HDFS-10738) | Fix TestRefreshUserMappings.testRefreshSuperUserGroupsConfiguration test failure |  Major | test | Rakesh R | Rakesh R |
+| [HADOOP-13299](https://issues.apache.org/jira/browse/HADOOP-13299) | JMXJsonServlet is vulnerable to TRACE |  Minor | . | Haibo Chen | Haibo Chen |
+| [HDFS-8224](https://issues.apache.org/jira/browse/HDFS-8224) | Schedule a block for scanning if its metadata file is corrupt |  Major | datanode | Rushabh S Shah | Rushabh S Shah |
+| [YARN-5382](https://issues.apache.org/jira/browse/YARN-5382) | RM does not audit log kill request for active applications |  Major | resourcemanager | Jason Lowe | Vrushali C |
+| [HDFS-10643](https://issues.apache.org/jira/browse/HDFS-10643) | Namenode should use loginUser(hdfs) to generateEncryptedKey |  Major | encryption, namenode | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-8897](https://issues.apache.org/jira/browse/HDFS-8897) | Balancer should handle fs.defaultFS trailing slash in HA |  Major | balancer & mover | LINTE | John Zhuge |
+| [HDFS-10731](https://issues.apache.org/jira/browse/HDFS-10731) | FSDirectory#verifyMaxDirItems does not log path name |  Minor | namenode | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-5476](https://issues.apache.org/jira/browse/YARN-5476) | Not existed application reported as ACCEPTED state by YarnClientImpl |  Critical | yarn | Yesha Vora | Junping Du |
+| [YARN-5491](https://issues.apache.org/jira/browse/YARN-5491) | Random Failure TestCapacityScheduler#testCSQueueBlocked |  Major | test | Bibin A Chundatt | Bibin A Chundatt |
+| [HADOOP-13333](https://issues.apache.org/jira/browse/HADOOP-13333) | testConf.xml ls comparators in wrong order |  Trivial | fs | John Zhuge | Vrushali C |
+| [HADOOP-13470](https://issues.apache.org/jira/browse/HADOOP-13470) | GenericTestUtils$LogCapturer is flaky |  Major | test, util | Mingliang Liu | Mingliang Liu |
+| [HADOOP-13494](https://issues.apache.org/jira/browse/HADOOP-13494) | ReconfigurableBase can log sensitive information |  Major | security | Sean Mackrory | Sean Mackrory |
+| [HDFS-9530](https://issues.apache.org/jira/browse/HDFS-9530) | ReservedSpace is not cleared for abandoned Blocks |  Critical | datanode | Fei Hui | Brahma Reddy Battula |
+| [HDFS-10549](https://issues.apache.org/jira/browse/HDFS-10549) | Correctly revoke file leases when closing files |  Major | hdfs-client | Yiqun Lin | Yiqun Lin |
+| [HADOOP-13513](https://issues.apache.org/jira/browse/HADOOP-13513) | Java 1.7 support for org.apache.hadoop.fs.azure testcases |  Minor | fs/azure | Tibor Kiss | Tibor Kiss |
+| [HADOOP-13512](https://issues.apache.org/jira/browse/HADOOP-13512) | ReloadingX509TrustManager should keep reloading in case of exception |  Critical | security | Mingliang Liu | Mingliang Liu |
+| [YARN-4307](https://issues.apache.org/jira/browse/YARN-4307) | Display blacklisted nodes for AM container in the RM web UI |  Major | resourcemanager, webapp | Naganarasimha G R | Naganarasimha G R |
+| [MAPREDUCE-6763](https://issues.apache.org/jira/browse/MAPREDUCE-6763) | Shuffle server listen queue is too small |  Major | mrv2 | Jason Lowe | Jason Lowe |
+| [YARN-4837](https://issues.apache.org/jira/browse/YARN-4837) | User facing aspects of 'AM blacklisting' feature need fixing |  Critical | . | Vinod Kumar Vavilapalli | Vinod Kumar Vavilapalli |
+| [MAPREDUCE-6310](https://issues.apache.org/jira/browse/MAPREDUCE-6310) | Add jdiff support to MapReduce |  Blocker | . | Li Lu | Li Lu |
+| [YARN-3388](https://issues.apache.org/jira/browse/YARN-3388) | Allocation in LeafQueue could get stuck because DRF calculator isn't well supported when computing user-limit |  Major | capacityscheduler | Nathan Roberts | Nathan Roberts |
+| [YARN-4685](https://issues.apache.org/jira/browse/YARN-4685) | Disable AM blacklisting by default to mitigate situations that application get hanged |  Critical | resourcemanager | Rohith Sharma K S | Rohith Sharma K S |
+| [HADOOP-13428](https://issues.apache.org/jira/browse/HADOOP-13428) | Fix hadoop-common to generate jdiff |  Blocker | . | Wangda Tan | Wangda Tan |
+| [HDFS-10764](https://issues.apache.org/jira/browse/HDFS-10764) | Fix INodeFile#getBlocks to not return null |  Major | namenode | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-10692](https://issues.apache.org/jira/browse/HDFS-10692) | Point JDiff base version for HDFS from 2.6.0 to 2.7.2 |  Blocker | . | Wangda Tan | Wangda Tan |
+| [HADOOP-13487](https://issues.apache.org/jira/browse/HADOOP-13487) | Hadoop KMS should load old delegation tokens from Zookeeper on startup |  Major | kms | Alex Ivanov | Xiao Chen |
+| [HDFS-10783](https://issues.apache.org/jira/browse/HDFS-10783) | The option '-maxSize' and '-step' fail in OfflineImageViewer |  Major | tools | Yiqun Lin | Yiqun Lin |
+| [HADOOP-13524](https://issues.apache.org/jira/browse/HADOOP-13524) | mvn eclipse:eclipse generates .gitignore'able files |  Major | . | Vinod Kumar Vavilapalli | Vinod Kumar Vavilapalli |
+| [HADOOP-13497](https://issues.apache.org/jira/browse/HADOOP-13497) | fix wrong command in CredentialProviderAPI.md |  Trivial | documentation | Yuanbo Liu | Yuanbo Liu |
+| [MAPREDUCE-6761](https://issues.apache.org/jira/browse/MAPREDUCE-6761) | Regression when handling providers - invalid configuration ServiceConfiguration causes Cluster initialization failure |  Major | mrv2 | Peter Vary | Peter Vary |
+| [HDFS-10748](https://issues.apache.org/jira/browse/HDFS-10748) | TestFileTruncate#testTruncateWithDataNodesRestart runs sometimes timeout |  Major | test | Xiaoyu Yao | Yiqun Lin |
+| [HDFS-10793](https://issues.apache.org/jira/browse/HDFS-10793) | Fix HdfsAuditLogger binary incompatibility introduced by HDFS-9184 |  Blocker | . | Andrew Wang | Manoj Govindassamy |
+| [HDFS-10652](https://issues.apache.org/jira/browse/HDFS-10652) | Add a unit test for HDFS-4660 |  Major | datanode, hdfs | Yongjun Zhang | Vinayakumar B |
+| [HADOOP-13552](https://issues.apache.org/jira/browse/HADOOP-13552) | RetryInvocationHandler logs all remote exceptions |  Blocker | ipc | Jason Lowe | Jason Lowe |
+| [HADOOP-12765](https://issues.apache.org/jira/browse/HADOOP-12765) | HttpServer2 should switch to using the non-blocking SslSelectChannelConnector to prevent performance degradation when handling SSL connections |  Major | . | Min Shen | Min Shen |
+| [MAPREDUCE-6768](https://issues.apache.org/jira/browse/MAPREDUCE-6768) | TestRecovery.testSpeculative failed with NPE |  Major | mrv2 | Haibo Chen | Haibo Chen |
+| [HADOOP-13559](https://issues.apache.org/jira/browse/HADOOP-13559) | Remove close() within try-with-resources in ChecksumFileSystem/ChecksumFs classes |  Minor | fs | Aaron Fabbri | Aaron Fabbri |
+| [HDFS-4210](https://issues.apache.org/jira/browse/HDFS-4210) | Throw helpful exception when DNS entry for JournalNode cannot be resolved |  Trivial | ha, journal-node, namenode | Damien Hardy | John Zhuge |
+| [MAPREDUCE-4784](https://issues.apache.org/jira/browse/MAPREDUCE-4784) | TestRecovery occasionally fails |  Major | mrv2, test | Jason Lowe | Haibo Chen |
+| [HDFS-10760](https://issues.apache.org/jira/browse/HDFS-10760) | DataXceiver#run() should not log InvalidToken exception as an error |  Major | . | Pan Yuxuan | Pan Yuxuan |
+| [HDFS-10729](https://issues.apache.org/jira/browse/HDFS-10729) | Improve log message for edit loading failures caused by FS limit checks. |  Major | namenode | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-5221](https://issues.apache.org/jira/browse/YARN-5221) | Expose UpdateResourceRequest API to allow AM to request for change in container properties |  Major | . | Arun Suresh | Arun Suresh |
+| [HADOOP-13375](https://issues.apache.org/jira/browse/HADOOP-13375) | o.a.h.security.TestGroupsCaching.testBackgroundRefreshCounters seems flaky |  Major | security, test | Mingliang Liu | Weiwei Yang |
+| [YARN-5555](https://issues.apache.org/jira/browse/YARN-5555) | Scheduler UI: "% of Queue" is inaccurate if leaf queue is hierarchically nested. |  Minor | . | Eric Payne | Eric Payne |
+| [YARN-5549](https://issues.apache.org/jira/browse/YARN-5549) | AMLauncher#createAMContainerLaunchContext() should not log the command to be launched indiscriminately |  Critical | resourcemanager | Daniel Templeton | Daniel Templeton |
+| [HDFS-10841](https://issues.apache.org/jira/browse/HDFS-10841) | Remove duplicate or unused variable in appendFile() |  Minor | . | Kihwal Lee | Kihwal Lee |
+| [HADOOP-13558](https://issues.apache.org/jira/browse/HADOOP-13558) | UserGroupInformation created from a Subject incorrectly tries to renew the Kerberos ticket |  Major | security | Alejandro Abdelnur | Xiao Chen |
+| [HDFS-9038](https://issues.apache.org/jira/browse/HDFS-9038) | DFS reserved space is erroneously counted towards non-DFS used. |  Major | datanode | Chris Nauroth | Brahma Reddy Battula |
+| [HDFS-10832](https://issues.apache.org/jira/browse/HDFS-10832) | Propagate ACL bit and isEncrypted bit in HttpFS FileStatus permissions |  Critical | httpfs | Andrew Wang | Andrew Wang |
+| [YARN-5632](https://issues.apache.org/jira/browse/YARN-5632) | UPDATE\_EXECUTION\_TYPE causes UpdateContainerRequestPBImpl to throw |  Major | api | Jason Lowe | Jason Lowe |
+| [HDFS-9781](https://issues.apache.org/jira/browse/HDFS-9781) | FsDatasetImpl#getBlockReports can occasionally throw NullPointerException |  Major | datanode | Wei-Chiu Chuang | Manoj Govindassamy |
+| [HDFS-10830](https://issues.apache.org/jira/browse/HDFS-10830) | FsDatasetImpl#removeVolumes crashes with IllegalMonitorStateException when vol being removed is in use |  Major | hdfs | Manoj Govindassamy | Arpit Agarwal |
+| [YARN-5190](https://issues.apache.org/jira/browse/YARN-5190) | Registering/unregistering container metrics triggered by ContainerEvent and ContainersMonitorEvent are conflict which cause uncaught exception in ContainerMonitorImpl |  Blocker | . | Junping Du | Junping Du |
+| [HDFS-10856](https://issues.apache.org/jira/browse/HDFS-10856) | Update the comment of BPServiceActor$Scheduler#scheduleNextBlockReport |  Minor | documentation | Akira Ajisaka | Yiqun Lin |
+| [YARN-5630](https://issues.apache.org/jira/browse/YARN-5630) | NM fails to start after downgrade from 2.8 to 2.7 |  Blocker | nodemanager | Jason Lowe | Jason Lowe |
+| [HADOOP-13616](https://issues.apache.org/jira/browse/HADOOP-13616) | Broken code snippet area in Hadoop Benchmarking |  Minor | documentation | Kai Sasaki | Kai Sasaki |
+| [HDFS-10862](https://issues.apache.org/jira/browse/HDFS-10862) | Typos in 4 log messages |  Trivial | . | Mehran Hassani | Mehran Hassani |
+| [YARN-4232](https://issues.apache.org/jira/browse/YARN-4232) | TopCLI console support for HA mode |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-5655](https://issues.apache.org/jira/browse/YARN-5655) | TestContainerManagerSecurity#testNMTokens is asserting |  Major | . | Jason Lowe | Robert Kanter |
+| [HDFS-10879](https://issues.apache.org/jira/browse/HDFS-10879) | TestEncryptionZonesWithKMS#testReadWrite fails intermittently |  Major | . | Xiao Chen | Xiao Chen |
+| [YARN-5539](https://issues.apache.org/jira/browse/YARN-5539) | TimelineClient failed to retry on "java.net.SocketTimeoutException: Read timed out" |  Critical | yarn | Sumana Sathish | Junping Du |
+| [HADOOP-13643](https://issues.apache.org/jira/browse/HADOOP-13643) | Math error in AbstractContractDistCpTest |  Minor | . | Aaron Fabbri | Aaron Fabbri |
+| [HDFS-10886](https://issues.apache.org/jira/browse/HDFS-10886) | Replace "fs.default.name" with "fs.defaultFS" in viewfs document |  Minor | documentation, federation | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13535](https://issues.apache.org/jira/browse/HADOOP-13535) | Add jetty6 acceptor startup issue workaround to branch-2 |  Major | . | Wei-Chiu Chuang | Min Shen |
+| [YARN-5664](https://issues.apache.org/jira/browse/YARN-5664) | Fix Yarn documentation to link to correct versions. |  Minor | . | Xiao Chen | Xiao Chen |
+| [YARN-5663](https://issues.apache.org/jira/browse/YARN-5663) | Small refactor in ZKRMStateStore |  Minor | resourcemanager | Oleksii Dymytrov | Oleksii Dymytrov |
+| [HADOOP-12597](https://issues.apache.org/jira/browse/HADOOP-12597) | In kms-site.xml configuration "hadoop.security.keystore.JavaKeyStoreProvider.password" should be updated with new name |  Minor | security | huangyitian | Surendra Singh Lilhore |
+| [HADOOP-13638](https://issues.apache.org/jira/browse/HADOOP-13638) | KMS should set UGI's Configuration object properly |  Major | kms | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-9885](https://issues.apache.org/jira/browse/HDFS-9885) | Correct the distcp counters name while displaying counters |  Minor | distcp | Archana T | Surendra Singh Lilhore |
+| [YARN-5660](https://issues.apache.org/jira/browse/YARN-5660) | Wrong audit constants are used in Get/Put of priority in RMWebService |  Trivial | resourcemanager | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-10889](https://issues.apache.org/jira/browse/HDFS-10889) | Remove outdated Fault Injection Framework documentaion |  Major | documentation | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10713](https://issues.apache.org/jira/browse/HDFS-10713) | Throttle FsNameSystem lock warnings |  Major | logging, namenode | Arpit Agarwal | Hanisha Koneru |
+| [HDFS-10426](https://issues.apache.org/jira/browse/HDFS-10426) | TestPendingInvalidateBlock failed in trunk |  Major | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-10828](https://issues.apache.org/jira/browse/HDFS-10828) | Fix usage of FsDatasetImpl object lock in ReplicaMap |  Blocker | . | Arpit Agarwal | Arpit Agarwal |
+| [YARN-5631](https://issues.apache.org/jira/browse/YARN-5631) | Missing refreshClusterMaxPriority usage in rmadmin help message |  Minor | . | Kai Sasaki | Kai Sasaki |
+| [HDFS-9444](https://issues.apache.org/jira/browse/HDFS-9444) | Add utility to find set of available ephemeral ports to ServerSocketUtil |  Major | . | Brahma Reddy Battula | Masatake Iwasaki |
+| [HDFS-10824](https://issues.apache.org/jira/browse/HDFS-10824) | MiniDFSCluster#storageCapacities has no effects on real capacity |  Major | . | Xiaobing Zhou | Xiaobing Zhou |
+| [HDFS-10914](https://issues.apache.org/jira/browse/HDFS-10914) | Move remnants of oah.hdfs.client to hadoop-hdfs-client |  Critical | hdfs-client | Andrew Wang | Andrew Wang |
+| [MAPREDUCE-6771](https://issues.apache.org/jira/browse/MAPREDUCE-6771) | RMContainerAllocator sends container diagnostics event after corresponding completion event |  Major | mrv2 | Haibo Chen | Haibo Chen |
+| [HADOOP-13640](https://issues.apache.org/jira/browse/HADOOP-13640) | Fix findbugs warning in VersionInfoMojo.java |  Major | . | Tsuyoshi Ozawa | Yuanbo Liu |
+| [HDFS-10850](https://issues.apache.org/jira/browse/HDFS-10850) | getEZForPath should NOT throw FNF |  Blocker | hdfs | Daryn Sharp | Andrew Wang |
+| [HDFS-10945](https://issues.apache.org/jira/browse/HDFS-10945) | Fix the Findbugwaring FSNamesystem#renameTo(String, String, boolean) in branch-2 |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10810](https://issues.apache.org/jira/browse/HDFS-10810) |  Setreplication removing block from underconstrcution temporarily when batch IBR is enabled. |  Major | namenode | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10944](https://issues.apache.org/jira/browse/HDFS-10944) | Correct the javadoc of dfsadmin#disallowSnapshot |  Minor | documentation | Jagadesh Kiran N | Jagadesh Kiran N |
+| [HDFS-10947](https://issues.apache.org/jira/browse/HDFS-10947) | Correct the API name for truncate in webhdfs document |  Major | documentation | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HADOOP-12667](https://issues.apache.org/jira/browse/HADOOP-12667) | s3a: Support createNonRecursive API |  Major | fs/s3 | Sean Mackrory | Sean Mackrory |
+| [HDFS-10609](https://issues.apache.org/jira/browse/HDFS-10609) | Uncaught InvalidEncryptionKeyException during pipeline recovery may abort downstream applications |  Major | encryption | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-10962](https://issues.apache.org/jira/browse/HDFS-10962) | TestRequestHedgingProxyProvider is flaky |  Major | test | Andrew Wang | Andrew Wang |
+| [MAPREDUCE-6740](https://issues.apache.org/jira/browse/MAPREDUCE-6740) | Enforce mapreduce.task.timeout to be at least mapreduce.task.progress-report.interval |  Minor | mr-am | Haibo Chen | Haibo Chen |
+| [YARN-5101](https://issues.apache.org/jira/browse/YARN-5101) | YARN\_APPLICATION\_UPDATED event is parsed in ApplicationHistoryManagerOnTimelineStore#convertToApplicationReport with reversed order |  Major | . | Xuan Gong | Sunil G |
+| [YARN-5659](https://issues.apache.org/jira/browse/YARN-5659) | getPathFromYarnURL should use standard methods |  Major | . | Sergey Shelukhin | Sergey Shelukhin |
+| [HADOOP-12611](https://issues.apache.org/jira/browse/HADOOP-12611) | TestZKSignerSecretProvider#testMultipleInit occasionally fail |  Major | . | Wei-Chiu Chuang | Eric Badger |
+| [HDFS-10797](https://issues.apache.org/jira/browse/HDFS-10797) | Disk usage summary of snapshots causes renamed blocks to get counted twice |  Major | snapshots | Sean Mackrory | Sean Mackrory |
+| [HDFS-10991](https://issues.apache.org/jira/browse/HDFS-10991) | Export hdfsTruncateFile symbol in libhdfs |  Blocker | libhdfs | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [HADOOP-13700](https://issues.apache.org/jira/browse/HADOOP-13700) | Remove unthrown IOException from TrashPolicy#initialize and #getInstance signatures |  Critical | fs | Haibo Chen | Andrew Wang |
+| [HDFS-11002](https://issues.apache.org/jira/browse/HDFS-11002) | Fix broken attr/getfattr/setfattr links in ExtendedAttributes.md |  Major | documentation | Mingliang Liu | Mingliang Liu |
+| [HDFS-11000](https://issues.apache.org/jira/browse/HDFS-11000) | webhdfs PUT does not work if requests are routed to call queue. |  Major | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-10987](https://issues.apache.org/jira/browse/HDFS-10987) | Make Decommission less expensive when lot of blocks present. |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13024](https://issues.apache.org/jira/browse/HADOOP-13024) | Distcp with -delete feature on raw data not implemented |  Major | tools/distcp | Mavin Martin | Mavin Martin |
+| [HDFS-10986](https://issues.apache.org/jira/browse/HDFS-10986) | DFSAdmin should log detailed error message if any |  Major | tools | Mingliang Liu | Mingliang Liu |
+| [HDFS-10990](https://issues.apache.org/jira/browse/HDFS-10990) | TestPendingInvalidateBlock should wait for IBRs |  Minor | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-10735](https://issues.apache.org/jira/browse/HDFS-10735) | Distcp using webhdfs on secure HA clusters fails with StandbyException |  Major | webhdfs | Benoy Antony | Benoy Antony |
+| [HDFS-10883](https://issues.apache.org/jira/browse/HDFS-10883) | `getTrashRoot`'s behavior is not consistent in DFS after enabling EZ. |  Major | . | Yuanbo Liu | Yuanbo Liu |
+| [HADOOP-13707](https://issues.apache.org/jira/browse/HADOOP-13707) | If kerberos is enabled while HTTP SPNEGO is not configured, some links cannot be accessed |  Major | . | Yuanbo Liu | Yuanbo Liu |
+| [HDFS-10301](https://issues.apache.org/jira/browse/HDFS-10301) | BlockReport retransmissions may lead to storages falsely being declared zombie if storage report processing happens out of order |  Critical | namenode | Konstantin Shvachko | Vinitha Reddy Gankidi |
+| [HDFS-10712](https://issues.apache.org/jira/browse/HDFS-10712) | Fix TestDataNodeVolumeFailure on 2.\* branches. |  Major | . | Konstantin Shvachko | Vinitha Reddy Gankidi |
+| [HDFS-10920](https://issues.apache.org/jira/browse/HDFS-10920) | TestStorageMover#testNoSpaceDisk is failing intermittently |  Major | test | Rakesh R | Rakesh R |
+| [HDFS-10960](https://issues.apache.org/jira/browse/HDFS-10960) | TestDataNodeHotSwapVolumes#testRemoveVolumeBeingWritten fails at disk error verification after volume remove |  Minor | hdfs | Manoj Govindassamy | Manoj Govindassamy |
+| [HDFS-10752](https://issues.apache.org/jira/browse/HDFS-10752) | Several log refactoring/improvement suggestion in HDFS |  Major | . | Nemo Chen | Hanisha Koneru |
+| [HDFS-11025](https://issues.apache.org/jira/browse/HDFS-11025) | TestDiskspaceQuotaUpdate fails in trunk due to Bind exception |  Minor | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-11018](https://issues.apache.org/jira/browse/HDFS-11018) | Incorrect check and message in FsDatasetImpl#invalidate |  Major | datanode | Wei-Chiu Chuang | Yiqun Lin |
+| [HADOOP-13236](https://issues.apache.org/jira/browse/HADOOP-13236) | truncate will fail when we use viewfilesystem |  Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13749](https://issues.apache.org/jira/browse/HADOOP-13749) | KMSClientProvider combined with KeyProviderCache can result in wrong UGI being used |  Critical | . | Sergey Shelukhin | Xiaoyu Yao |
+| [HDFS-11042](https://issues.apache.org/jira/browse/HDFS-11042) | Add missing cleanupSSLConfig() call for tests that use setupSSLConfig() |  Major | test | Kuhu Shukla | Kuhu Shukla |
+| [HDFS-11015](https://issues.apache.org/jira/browse/HDFS-11015) | Enforce timeout in balancer |  Major | balancer & mover | Kihwal Lee | Kihwal Lee |
+| [YARN-5677](https://issues.apache.org/jira/browse/YARN-5677) | RM should transition to standby when connection is lost for an extended period |  Critical | resourcemanager | Daniel Templeton | Daniel Templeton |
+| [HDFS-11054](https://issues.apache.org/jira/browse/HDFS-11054) | Suppress verbose log message in BlockPlacementPolicyDefault |  Major | . | Arpit Agarwal | Chen Liang |
+| [HDFS-11050](https://issues.apache.org/jira/browse/HDFS-11050) | Change log level to 'warn' when ssl initialization fails and defaults to DEFAULT\_TIMEOUT\_CONN\_CONFIGURATOR |  Major | . | Kuhu Shukla | Kuhu Shukla |
+| [HDFS-8492](https://issues.apache.org/jira/browse/HDFS-8492) | DN should notify NN when client requests a missing block |  Major | . | Daryn Sharp | Walter Su |
+| [MAPREDUCE-6541](https://issues.apache.org/jira/browse/MAPREDUCE-6541) | Exclude scheduled reducer memory when calculating available mapper slots from headroom to avoid deadlock |  Major | . | Wangda Tan | Varun Saxena |
+| [YARN-3848](https://issues.apache.org/jira/browse/YARN-3848) | TestNodeLabelContainerAllocation is not timing out |  Major | test | Jason Lowe | Varun Saxena |
+| [HADOOP-13201](https://issues.apache.org/jira/browse/HADOOP-13201) | Print the directory paths when ViewFs denies the rename operation on internal dirs |  Major | viewfs | Tianyin Xu | Rakesh R |
+| [YARN-4831](https://issues.apache.org/jira/browse/YARN-4831) | Recovered containers will be killed after NM stateful restart |  Major | nodemanager | Siqi Li | Siqi Li |
+| [YARN-3432](https://issues.apache.org/jira/browse/YARN-3432) | Cluster metrics have wrong Total Memory when there is reserved memory on CS |  Major | capacityscheduler, resourcemanager | Thomas Graves | Brahma Reddy Battula |
+| [HDFS-9500](https://issues.apache.org/jira/browse/HDFS-9500) | datanodesSoftwareVersions map may counting wrong when rolling upgrade |  Major | . | Phil Yang | Erik Krogen |
+| [MAPREDUCE-2631](https://issues.apache.org/jira/browse/MAPREDUCE-2631) | Potential resource leaks in BinaryProtocol$TeeOutputStream.java |  Major | . | Ravi Teja Ch N V | Sunil G |
+| [HADOOP-13770](https://issues.apache.org/jira/browse/HADOOP-13770) | Shell.checkIsBashSupported swallowed an interrupted exception |  Blocker | util | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-5027](https://issues.apache.org/jira/browse/YARN-5027) | NM should clean up app log dirs after NM restart |  Major | nodemanager | sandflee | sandflee |
+| [YARN-5767](https://issues.apache.org/jira/browse/YARN-5767) | Fix the order that resources are cleaned up from the local Public/Private caches |  Major | . | Chris Trezzo | Chris Trezzo |
+| [HDFS-11061](https://issues.apache.org/jira/browse/HDFS-11061) | Update dfs -count -t command line help and documentation |  Minor | documentation, fs | Wei-Chiu Chuang | Yiqun Lin |
+| [YARN-5773](https://issues.apache.org/jira/browse/YARN-5773) | RM recovery too slow due to LeafQueue#activateApplication() |  Critical | capacity scheduler, rolling upgrade | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-10455](https://issues.apache.org/jira/browse/HDFS-10455) | Logging the username when deny the setOwner operation |  Minor | namenode | Tianyin Xu | Rakesh R |
+| [HADOOP-13773](https://issues.apache.org/jira/browse/HADOOP-13773) | wrong HADOOP\_CLIENT\_OPTS in hadoop-env  on branch-2 |  Major | conf | Fei Hui | Fei Hui |
+| [YARN-5001](https://issues.apache.org/jira/browse/YARN-5001) | Aggregated Logs root directory is created with wrong group if nonexistent |  Major | log-aggregation, nodemanager, security | Haibo Chen | Haibo Chen |
+| [YARN-5815](https://issues.apache.org/jira/browse/YARN-5815) | Random failure of TestApplicationPriority.testOrderOfActivatingThePriorityApplicationOnRMRestart |  Major | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-11097](https://issues.apache.org/jira/browse/HDFS-11097) | Fix the jenkins warning related to the deprecated method StorageReceivedDeletedBlocks |  Major | . | Yiqun Lin | Yiqun Lin |
+| [YARN-5837](https://issues.apache.org/jira/browse/YARN-5837) | NPE when getting node status of a decommissioned node after an RM restart |  Major | . | Robert Kanter | Robert Kanter |
+| [HADOOP-13798](https://issues.apache.org/jira/browse/HADOOP-13798) | TestHadoopArchives times out |  Major | test | Akira Ajisaka | Akira Ajisaka |
+| [HADOOP-13797](https://issues.apache.org/jira/browse/HADOOP-13797) | Remove hardcoded absolute path for ls |  Major | util | Christine Koppelt | Christine Koppelt |
+| [HADOOP-13804](https://issues.apache.org/jira/browse/HADOOP-13804) | MutableStat mean loses accuracy if add(long, long) is used |  Minor | metrics | Erik Krogen | Erik Krogen |
+| [HDFS-11128](https://issues.apache.org/jira/browse/HDFS-11128) | CreateEditsLog throws NullPointerException |  Major | hdfs | Hanisha Koneru | Hanisha Koneru |
+| [HDFS-11129](https://issues.apache.org/jira/browse/HDFS-11129) | TestAppendSnapshotTruncate fails with bind exception |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-13813](https://issues.apache.org/jira/browse/HADOOP-13813) | TestDelegationTokenFetcher#testDelegationTokenWithoutRenewer is failing |  Major | security, test | Mingliang Liu | Mingliang Liu |
+| [HDFS-11087](https://issues.apache.org/jira/browse/HDFS-11087) | NamenodeFsck should check if the output writer is still writable. |  Major | namenode | Konstantin Shvachko | Erik Krogen |
+| [HDFS-11135](https://issues.apache.org/jira/browse/HDFS-11135) | The tests in TestBalancer run fails due to NPE |  Major | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-11056](https://issues.apache.org/jira/browse/HDFS-11056) | Concurrent append and read operations lead to checksum error |  Major | datanode, httpfs | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [MAPREDUCE-6797](https://issues.apache.org/jira/browse/MAPREDUCE-6797) | Job history server scans can become blocked on a single, slow entry |  Critical | jobhistoryserver | Prabhu Joseph | Prabhu Joseph |
+| [YARN-4355](https://issues.apache.org/jira/browse/YARN-4355) | NPE while processing localizer heartbeat |  Major | nodemanager | Jason Lowe | Varun Saxena |
+| [YARN-4218](https://issues.apache.org/jira/browse/YARN-4218) | Metric for resource\*time that was preempted |  Major | resourcemanager | Chang Li | Chang Li |
+| [YARN-5875](https://issues.apache.org/jira/browse/YARN-5875) | TestTokenClientRMService#testTokenRenewalWrongUser fails |  Major | . | Varun Saxena | Gergely Novák |
+| [HADOOP-13815](https://issues.apache.org/jira/browse/HADOOP-13815) | TestKMS#testDelegationTokensOpsSimple and TestKMS#testDelegationTokensOpsKerberized Fails in Trunk |  Major | test | Brahma Reddy Battula | Xiao Chen |
+| [YARN-5836](https://issues.apache.org/jira/browse/YARN-5836) | Malicious AM can kill containers of other apps running in any node its containers are running |  Minor | nodemanager | Botong Huang | Botong Huang |
+| [HDFS-11134](https://issues.apache.org/jira/browse/HDFS-11134) | Fix bind exception threw in TestRenameWhileOpen |  Major | . | Yiqun Lin | Yiqun Lin |
+| [MAPREDUCE-6801](https://issues.apache.org/jira/browse/MAPREDUCE-6801) | Fix flaky TestKill.testKillJob() |  Major | mrv2 | Haibo Chen | Haibo Chen |
+| [HADOOP-13814](https://issues.apache.org/jira/browse/HADOOP-13814) | Sample configuration of KMS HTTP Authentication signature is misleading |  Minor | conf, documentation, kms | Masahiro Tanaka | Masahiro Tanaka |
+| [HDFS-11144](https://issues.apache.org/jira/browse/HDFS-11144) | TestFileCreationDelete#testFileCreationDeleteParent fails wind bind exception |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-11101](https://issues.apache.org/jira/browse/HDFS-11101) | TestDFSShell#testMoveWithTargetPortEmpty fails intermittently |  Major | test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-5859](https://issues.apache.org/jira/browse/YARN-5859) | TestResourceLocalizationService#testParallelDownloadAttemptsForPublicResource sometimes fails |  Major | test | Jason Lowe | Eric Badger |
+| [HADOOP-13663](https://issues.apache.org/jira/browse/HADOOP-13663) | Index out of range in SysInfoWindows |  Major | scripts | Inigo Goiri | Inigo Goiri |
+| [HDFS-11174](https://issues.apache.org/jira/browse/HDFS-11174) | Wrong HttpFS test command in doc |  Minor | documentation, httpfs | John Zhuge | John Zhuge |
+| [HADOOP-13820](https://issues.apache.org/jira/browse/HADOOP-13820) | Replace ugi.getUsername() with ugi.getShortUserName() in viewFS |  Minor | viewfs | Archana T | Brahma Reddy Battula |
+| [HADOOP-13838](https://issues.apache.org/jira/browse/HADOOP-13838) | KMSTokenRenewer should close providers |  Critical | kms | Xiao Chen | Xiao Chen |
+| [HADOOP-13830](https://issues.apache.org/jira/browse/HADOOP-13830) | Intermittent failure of ITestS3NContractRootDir#testRecursiveRootListing: "Can not create a Path from an empty string" |  Minor | fs/s3, test | Steve Loughran | Steve Loughran |
+| [YARN-5915](https://issues.apache.org/jira/browse/YARN-5915) | ATS 1.5 FileSystemTimelineWriter causes flush() to be called after every event write |  Major | timelineserver | Atul Sikaria | Atul Sikaria |
+| [MAPREDUCE-6815](https://issues.apache.org/jira/browse/MAPREDUCE-6815) | Fix flaky TestKill.testKillTask() |  Major | mrv2 | Haibo Chen | Haibo Chen |
+| [HDFS-11181](https://issues.apache.org/jira/browse/HDFS-11181) | Fuse wrapper has a typo |  Trivial | fuse-dfs | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HADOOP-13847](https://issues.apache.org/jira/browse/HADOOP-13847) | KMSWebApp should close KeyProviderCryptoExtension |  Major | kms | Anthony Young-Garner | John Zhuge |
+| [YARN-5559](https://issues.apache.org/jira/browse/YARN-5559) | Analyse 2.8.0/3.0.0 jdiff reports and fix any issues |  Blocker | resourcemanager | Wangda Tan | Akira Ajisaka |
+| [HADOOP-13861](https://issues.apache.org/jira/browse/HADOOP-13861) | Spelling errors in logging and exceptions for code |  Major | common, fs, io, security | Grant Sohn | Grant Sohn |
+| [HDFS-11180](https://issues.apache.org/jira/browse/HDFS-11180) | Intermittent deadlock in NameNode when failover happens. |  Blocker | namenode | Abhishek Modi | Akira Ajisaka |
+| [HDFS-11198](https://issues.apache.org/jira/browse/HDFS-11198) | NN UI should link DN web address using hostnames |  Critical | . | Kihwal Lee | Weiwei Yang |
+| [MAPREDUCE-6816](https://issues.apache.org/jira/browse/MAPREDUCE-6816) | Progress bars in Web UI always at 100% |  Blocker | webapps | Shen Yinjie | Shen Yinjie |
+| [YARN-5184](https://issues.apache.org/jira/browse/YARN-5184) | Fix up incompatible changes introduced on ContainerStatus and NodeReport |  Blocker | api | Karthik Kambatla | Sangjin Lee |
+| [YARN-5921](https://issues.apache.org/jira/browse/YARN-5921) | Incorrect synchronization in RMContextImpl#setHAServiceState/getHAServiceState |  Major | . | Varun Saxena | Varun Saxena |
+| [HDFS-11140](https://issues.apache.org/jira/browse/HDFS-11140) | Directory Scanner should log startup message time correctly |  Minor | . | Xiao Chen | Yiqun Lin |
+| [HDFS-11223](https://issues.apache.org/jira/browse/HDFS-11223) | Fix typos in HttpFs documentations |  Trivial | documentation | Yiqun Lin | Yiqun Lin |
+| [HDFS-11197](https://issues.apache.org/jira/browse/HDFS-11197) | Listing encryption zones fails when deleting a EZ that is on a snapshotted directory |  Minor | hdfs | Wellington Chevreuil | Wellington Chevreuil |
+| [HDFS-11224](https://issues.apache.org/jira/browse/HDFS-11224) | Lifeline message should be ignored for dead nodes |  Critical | . | Vinayakumar B | Vinayakumar B |
+| [HADOOP-13824](https://issues.apache.org/jira/browse/HADOOP-13824) | FsShell can suppress the real error if no error message is present |  Major | fs | Rob Vesse | John Zhuge |
+| [MAPREDUCE-6820](https://issues.apache.org/jira/browse/MAPREDUCE-6820) | Fix dead links in Job relevant classes |  Minor | documentation | Yiqun Lin | Yiqun Lin |
+| [HDFS-8870](https://issues.apache.org/jira/browse/HDFS-8870) | Lease is leaked on write failure |  Major | hdfs-client | Rushabh S Shah | Kuhu Shukla |
+| [HADOOP-13565](https://issues.apache.org/jira/browse/HADOOP-13565) | KerberosAuthenticationHandler#authenticate should not rebuild SPN based on client request |  Major | security | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-11229](https://issues.apache.org/jira/browse/HDFS-11229) | HDFS-11056 failed to close meta file |  Blocker | datanode | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-10570](https://issues.apache.org/jira/browse/HDFS-10570) | Remove classpath conflicts of netty-all jar in hadoop-hdfs-client |  Minor | test | Vinayakumar B | Vinayakumar B |
+| [HDFS-10684](https://issues.apache.org/jira/browse/HDFS-10684) | WebHDFS DataNode calls fail without parameter createparent |  Blocker | webhdfs | Samuel Low | John Zhuge |
+| [HDFS-11204](https://issues.apache.org/jira/browse/HDFS-11204) | Document the missing options of hdfs zkfc command |  Minor | documentation | Yiqun Lin | Yiqun Lin |
+| [HADOOP-13890](https://issues.apache.org/jira/browse/HADOOP-13890) | Maintain HTTP/host as SPNEGO SPN support and fix KerberosName parsing |  Major | test | Brahma Reddy Battula | Xiaoyu Yao |
+| [HDFS-11094](https://issues.apache.org/jira/browse/HDFS-11094) | Send back HAState along with NamespaceInfo during a versionRequest as an optional parameter |  Major | datanode | Eric Badger | Eric Badger |
+| [HDFS-11160](https://issues.apache.org/jira/browse/HDFS-11160) | VolumeScanner reports write-in-progress replicas as corrupt incorrectly |  Major | datanode | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-11263](https://issues.apache.org/jira/browse/HDFS-11263) | ClassCastException when we use Bzipcodec for Fsimage compression |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-11195](https://issues.apache.org/jira/browse/HDFS-11195) | Return error when appending files by webhdfs rest api fails |  Major | . | Yuanbo Liu | Yuanbo Liu |
+| [HDFS-11261](https://issues.apache.org/jira/browse/HDFS-11261) | Document missing NameNode metrics |  Minor | documentation | Yiqun Lin | Yiqun Lin |
+| [HDFS-11258](https://issues.apache.org/jira/browse/HDFS-11258) | File mtime change could not save to editlog |  Critical | . | Jimmy Xiang | Jimmy Xiang |
+| [HDFS-11271](https://issues.apache.org/jira/browse/HDFS-11271) | Typo in NameNode UI |  Trivial | namenode, ui | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-11250](https://issues.apache.org/jira/browse/HDFS-11250) | Fix a typo in ReplicaUnderRecovery#setRecoveryID |  Trivial | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-11270](https://issues.apache.org/jira/browse/HDFS-11270) | Document the missing options of NameNode bootstrap command |  Minor | documentation | Yiqun Lin | Yiqun Lin |
+| [HDFS-11252](https://issues.apache.org/jira/browse/HDFS-11252) | TestFileTruncate#testTruncateWithDataNodesRestartImmediately can fail with BindException |  Major | . | Jason Lowe | Yiqun Lin |
+| [YARN-6024](https://issues.apache.org/jira/browse/YARN-6024) | Capacity Scheduler 'continuous reservation looking' doesn't work when sum of queue's used and reserved resources is equal to max |  Major | . | Wangda Tan | Wangda Tan |
+| [HADOOP-13883](https://issues.apache.org/jira/browse/HADOOP-13883) | Add description of -fs option in generic command usage |  Minor | documentation | Yiqun Lin | Yiqun Lin |
+| [YARN-6029](https://issues.apache.org/jira/browse/YARN-6029) | CapacityScheduler deadlock when ParentQueue#getQueueUserAclInfo is called by one thread and LeafQueue#assignContainers is releasing excessive reserved container by another thread |  Critical | capacityscheduler | Tao Yang | Tao Yang |
+| [HADOOP-12733](https://issues.apache.org/jira/browse/HADOOP-12733) | Remove references to obsolete io.seqfile configuration variables |  Minor | . | Ray Chiang | Ray Chiang |
+| [HDFS-11280](https://issues.apache.org/jira/browse/HDFS-11280) | Allow WebHDFS to reuse HTTP connections to NN |  Major | hdfs | Zheng Shao | Zheng Shao |
+| [MAPREDUCE-6711](https://issues.apache.org/jira/browse/MAPREDUCE-6711) | JobImpl fails to handle preemption events on state COMMITTING |  Major | . | Li Lu | Prabhu Joseph |
+| [HADOOP-13958](https://issues.apache.org/jira/browse/HADOOP-13958) | Bump up release year to 2017 |  Blocker | . | Junping Du | Junping Du |
+| [YARN-6068](https://issues.apache.org/jira/browse/YARN-6068) | Log aggregation get failed when NM restart even with recovery |  Blocker | . | Junping Du | Junping Du |
+| [YARN-4148](https://issues.apache.org/jira/browse/YARN-4148) | When killing app, RM releases app's resource before they are released by NM |  Major | resourcemanager | Jun Gong | Jason Lowe |
+| [HDFS-11312](https://issues.apache.org/jira/browse/HDFS-11312) | Fix incompatible tag number change for nonDfsUsed in DatanodeInfoProto |  Blocker | . | Sean Mackrory | Sean Mackrory |
+| [YARN-6072](https://issues.apache.org/jira/browse/YARN-6072) | RM unable to start in secure mode |  Blocker | resourcemanager | Bibin A Chundatt | Ajith S |
+| [HDFS-10733](https://issues.apache.org/jira/browse/HDFS-10733) | NameNode terminated after full GC thinking QJM is unresponsive. |  Major | namenode, qjm | Konstantin Shvachko | Vinitha Reddy Gankidi |
+| [HADOOP-14001](https://issues.apache.org/jira/browse/HADOOP-14001) | Improve delegation token validity checking |  Major | . | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-11376](https://issues.apache.org/jira/browse/HDFS-11376) | Revert HDFS-8377 Support HTTP/2 in datanode |  Major | datanode | Andrew Wang | Xiao Chen |
+| [YARN-6151](https://issues.apache.org/jira/browse/YARN-6151) | FS preemption does not consider child queues over fairshare if the parent is under |  Major | fairscheduler | Yufei Gu | Yufei Gu |
+| [YARN-5271](https://issues.apache.org/jira/browse/YARN-5271) | ATS client doesn't work with Jersey 2 on the classpath |  Major | client, timelineserver | Steve Loughran | Weiwei Yang |
+| [YARN-3933](https://issues.apache.org/jira/browse/YARN-3933) | FairScheduler: Multiple calls to completedContainer are not safe |  Major | fairscheduler | Lavkesh Lahngir | Shiwei Guo |
+| [YARN-6177](https://issues.apache.org/jira/browse/YARN-6177) | Yarn client should exit with an informative error message if an incompatible Jersey library is used at client |  Major | . | Weiwei Yang | Weiwei Yang |
+| [HDFS-11379](https://issues.apache.org/jira/browse/HDFS-11379) | DFSInputStream may infinite loop requesting block locations |  Critical | hdfs-client | Daryn Sharp | Daryn Sharp |
+| [HADOOP-14092](https://issues.apache.org/jira/browse/HADOOP-14092) | Typo in hadoop-aws index.md |  Trivial | fs/s3 | John Zhuge | John Zhuge |
+| [HADOOP-13826](https://issues.apache.org/jira/browse/HADOOP-13826) | S3A Deadlock in multipart copy due to thread pool limits. |  Critical | fs/s3 | Sean Mackrory | Sean Mackrory |
+| [HADOOP-14017](https://issues.apache.org/jira/browse/HADOOP-14017) | User friendly name for ADLS user and group |  Major | fs/adl | John Zhuge | Vishwajeet Dusane |
+| [YARN-6175](https://issues.apache.org/jira/browse/YARN-6175) | FairScheduler: Negative vcore for resource needed to preempt |  Major | fairscheduler | Yufei Gu | Yufei Gu |
+| [HADOOP-14028](https://issues.apache.org/jira/browse/HADOOP-14028) | S3A BlockOutputStreams doesn't delete temporary files in multipart uploads or handle part upload failures |  Critical | fs/s3 | Seth Fitzsimmons | Steve Loughran |
+| [YARN-1728](https://issues.apache.org/jira/browse/YARN-1728) | Workaround guice3x-undecoded pathInfo in YARN WebApp |  Major | . | Abraham Elmahrek | Yuanbo Liu |
+| [HADOOP-12979](https://issues.apache.org/jira/browse/HADOOP-12979) | IOE in S3a:  ${hadoop.tmp.dir}/s3a not configured |  Major | . | Steve Loughran | Steve Loughran |
+| [YARN-6270](https://issues.apache.org/jira/browse/YARN-6270) | WebUtils.getRMWebAppURLWithScheme() needs to honor RM HA setting |  Major | . | Sumana Sathish | Xuan Gong |
+| [HDFS-11498](https://issues.apache.org/jira/browse/HDFS-11498) | Make RestCsrfPreventionHandler and WebHdfsHandler compatible with Netty 4.0 |  Major | . | Andrew Wang | Andrew Wang |
+| [HADOOP-14087](https://issues.apache.org/jira/browse/HADOOP-14087) | S3A typo in pom.xml test exclusions |  Major | fs/s3 | Aaron Fabbri | Aaron Fabbri |
+| [HADOOP-14062](https://issues.apache.org/jira/browse/HADOOP-14062) | ApplicationMasterProtocolPBClientImpl.allocate fails with EOFException when RPC privacy is enabled |  Critical | . | Steven Rand | Steven Rand |
+| [HDFS-11431](https://issues.apache.org/jira/browse/HDFS-11431) | hadoop-hdfs-client JAR does not include ConfiguredFailoverProxyProvider |  Blocker | build, hdfs-client | Steven Rand | Steven Rand |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [MAPREDUCE-6191](https://issues.apache.org/jira/browse/MAPREDUCE-6191) | TestJavaSerialization fails with getting incorrect MR job result |  Minor | test | sam liu | sam liu |
+| [YARN-3339](https://issues.apache.org/jira/browse/YARN-3339) | TestDockerContainerExecutor should pull a single image and not the entire centos repository |  Minor | test | Ravindra Kumar Naik | Ravindra Kumar Naik |
+| [YARN-1880](https://issues.apache.org/jira/browse/YARN-1880) | Cleanup TestApplicationClientProtocolOnHA |  Trivial | test | Tsuyoshi Ozawa | Tsuyoshi Ozawa |
+| [HDFS-6263](https://issues.apache.org/jira/browse/HDFS-6263) | Remove DRFA.MaxBackupIndex config from log4j.properties |  Minor | . | Akira Ajisaka | Abhiraj Butala |
+| [HDFS-6408](https://issues.apache.org/jira/browse/HDFS-6408) | Remove redundant definitions in log4j.properties |  Minor | test | Abhiraj Butala | Abhiraj Butala |
+| [YARN-2666](https://issues.apache.org/jira/browse/YARN-2666) | TestFairScheduler.testContinuousScheduling fails Intermittently |  Major | scheduler | Tsuyoshi Ozawa | zhihai xu |
+| [HDFS-8247](https://issues.apache.org/jira/browse/HDFS-8247) | TestDiskspaceQuotaUpdate#testAppendOverTypeQuota is failing |  Major | test | Anu Engineer | Xiaoyu Yao |
+| [HADOOP-11881](https://issues.apache.org/jira/browse/HADOOP-11881) | test-patch.sh javac result is wildly wrong |  Major | build, test | Allen Wittenauer | Kengo Seki |
+| [HADOOP-11904](https://issues.apache.org/jira/browse/HADOOP-11904) | test-patch.sh goes into an infinite loop on non-maven builds |  Critical | test | Allen Wittenauer | Allen Wittenauer |
+| [YARN-3343](https://issues.apache.org/jira/browse/YARN-3343) | TestCapacitySchedulerNodeLabelUpdate.testNodeUpdate sometime fails in trunk |  Minor | . | Xuan Gong | Rohith Sharma K S |
+| [YARN-3580](https://issues.apache.org/jira/browse/YARN-3580) | [JDK 8] TestClientRMService.testGetLabelsToNodes fails |  Major | test | Robert Kanter | Robert Kanter |
+| [HDFS-7559](https://issues.apache.org/jira/browse/HDFS-7559) | Create unit test to automatically compare HDFS related classes and hdfs-default.xml |  Minor | . | Ray Chiang | Ray Chiang |
+| [HADOOP-11906](https://issues.apache.org/jira/browse/HADOOP-11906) | test-patch.sh should use 'file' command for patch determinism |  Major | . | Allen Wittenauer | Sean Busbey |
+| [YARN-3602](https://issues.apache.org/jira/browse/YARN-3602) | TestResourceLocalizationService.testPublicResourceInitializesLocalDir fails Intermittently due to IOException from cleanup |  Minor | test | zhihai xu | zhihai xu |
+| [HDFS-8243](https://issues.apache.org/jira/browse/HDFS-8243) | Files written by TestHostsFiles and TestNameNodeMXBean are causing Release Audit Warnings. |  Minor | test | Ruth Wisniewski | Ruth Wisniewski |
+| [HADOOP-11884](https://issues.apache.org/jira/browse/HADOOP-11884) | test-patch.sh should pull the real findbugs version |  Minor | test | Allen Wittenauer | Kengo Seki |
+| [HADOOP-11944](https://issues.apache.org/jira/browse/HADOOP-11944) | add option to test-patch to avoid relocating patch process directory |  Minor | . | Sean Busbey | Sean Busbey |
+| [HADOOP-11949](https://issues.apache.org/jira/browse/HADOOP-11949) | Add user-provided plugins to test-patch |  Major | . | Sean Busbey | Sean Busbey |
+| [HADOOP-12000](https://issues.apache.org/jira/browse/HADOOP-12000) | cannot use --java-home in test-patch |  Major | scripts | Allen Wittenauer | Allen Wittenauer |
+| [MAPREDUCE-6204](https://issues.apache.org/jira/browse/MAPREDUCE-6204) | TestJobCounters should use new properties instead of JobConf.MAPRED\_TASK\_JAVA\_OPTS |  Minor | test | sam liu | sam liu |
+| [HADOOP-12035](https://issues.apache.org/jira/browse/HADOOP-12035) | shellcheck plugin displays a wrong version potentially |  Trivial | build | Kengo Seki | Kengo Seki |
+| [HADOOP-12030](https://issues.apache.org/jira/browse/HADOOP-12030) | test-patch should only report on newly introduced findbugs warnings. |  Major | . | Sean Busbey | Sean Busbey |
+| [HADOOP-11930](https://issues.apache.org/jira/browse/HADOOP-11930) | test-patch in offline mode should tell maven to be in offline mode |  Major | . | Sean Busbey | Sean Busbey |
+| [HADOOP-11965](https://issues.apache.org/jira/browse/HADOOP-11965) | determine-flaky-tests needs a summary mode |  Minor | . | Allen Wittenauer | Yufei Gu |
+| [HDFS-8645](https://issues.apache.org/jira/browse/HDFS-8645) | Resolve inconsistent code in TestReplicationPolicy between trunk and branch-2 |  Major | namenode | Zhe Zhang | Zhe Zhang |
+| [YARN-2871](https://issues.apache.org/jira/browse/YARN-2871) | TestRMRestart#testRMRestartGetApplicationList sometime fails in trunk |  Minor | . | Ted Yu | zhihai xu |
+| [YARN-3956](https://issues.apache.org/jira/browse/YARN-3956) | Fix TestNodeManagerHardwareUtils fails on Mac |  Minor | nodemanager | Varun Vasudev | Varun Vasudev |
+| [HDFS-8834](https://issues.apache.org/jira/browse/HDFS-8834) | TestReplication#testReplicationWhenBlockCorruption is not valid after HDFS-6482 |  Minor | datanode | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [YARN-3992](https://issues.apache.org/jira/browse/YARN-3992) | TestApplicationPriority.testApplicationPriorityAllocation fails intermittently |  Major | . | Zhijie Shen | Sunil G |
+| [HDFS-2070](https://issues.apache.org/jira/browse/HDFS-2070) | Add more unit tests for FsShell getmerge |  Major | test | XieXianshan | Daniel Templeton |
+| [MAPREDUCE-5045](https://issues.apache.org/jira/browse/MAPREDUCE-5045) | UtilTest#isCygwin method appears to be unused |  Trivial | contrib/streaming, test | Chris Nauroth | Neelesh Srinivas Salian |
+| [YARN-3573](https://issues.apache.org/jira/browse/YARN-3573) | MiniMRYarnCluster constructor that starts the timeline server using a boolean should be marked deprecated |  Major | timelineserver | Mit Desai | Brahma Reddy Battula |
+| [HDFS-9295](https://issues.apache.org/jira/browse/HDFS-9295) | Add a thorough test of the full KMS code path |  Critical | security, test | Daniel Templeton | Daniel Templeton |
+| [HDFS-9339](https://issues.apache.org/jira/browse/HDFS-9339) | Extend full test of KMS ACLs |  Major | test | Daniel Templeton | Daniel Templeton |
+| [HDFS-9354](https://issues.apache.org/jira/browse/HDFS-9354) | Fix TestBalancer#testBalancerWithZeroThreadsForMove on Windows |  Major | test | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-9410](https://issues.apache.org/jira/browse/HDFS-9410) | Some tests should always reset sysout and syserr |  Minor | test | Xiao Chen | Xiao Chen |
+| [HADOOP-12564](https://issues.apache.org/jira/browse/HADOOP-12564) |  Upgrade JUnit3 TestCase to JUnit 4 in org.apache.hadoop.io package |  Trivial | test | Dustin Cote | Dustin Cote |
+| [HDFS-9153](https://issues.apache.org/jira/browse/HDFS-9153) | Pretty-format the output for DFSIO |  Major | . | Kai Zheng | Kai Zheng |
+| [HDFS-9429](https://issues.apache.org/jira/browse/HDFS-9429) | Tests in TestDFSAdminWithHA intermittently fail with EOFException |  Major | test | Xiao Chen | Xiao Chen |
+| [HADOOP-10729](https://issues.apache.org/jira/browse/HADOOP-10729) | Add tests for PB RPC in case version mismatch of client and server |  Major | ipc | Junping Du | Junping Du |
+| [HDFS-7553](https://issues.apache.org/jira/browse/HDFS-7553) | fix the TestDFSUpgradeWithHA due to BindException |  Major | test | Liang Xie | Xiao Chen |
+| [HDFS-9626](https://issues.apache.org/jira/browse/HDFS-9626) | TestBlockReplacement#testBlockReplacement fails occasionally |  Minor | test | Xiao Chen | Xiao Chen |
+| [HADOOP-12696](https://issues.apache.org/jira/browse/HADOOP-12696) | Add Tests for S3FileSystem Contract |  Major | tools | Matthew Paduano | Matthew Paduano |
+| [MAPREDUCE-6614](https://issues.apache.org/jira/browse/MAPREDUCE-6614) | Remove unnecessary code in TestMapreduceConfigFields |  Minor | test | Akira Ajisaka | Kai Sasaki |
+| [HADOOP-12736](https://issues.apache.org/jira/browse/HADOOP-12736) | TestTimedOutTestsListener#testThreadDumpAndDeadlocks sometimes times out |  Major | . | Xiao Chen | Xiao Chen |
+| [HADOOP-12715](https://issues.apache.org/jira/browse/HADOOP-12715) | TestValueQueue#testgetAtMostPolicyALL fails intermittently |  Major | . | Xiao Chen | Xiao Chen |
+| [HDFS-9773](https://issues.apache.org/jira/browse/HDFS-9773) | Remove dead code related to SimulatedFSDataset in tests |  Minor | test | Akira Ajisaka | Brahma Reddy Battula |
+| [HDFS-9888](https://issues.apache.org/jira/browse/HDFS-9888) | Allow reseting KerberosName in unit tests |  Minor | . | Xiao Chen | Xiao Chen |
+| [YARN-4717](https://issues.apache.org/jira/browse/YARN-4717) | TestResourceLocalizationService.testPublicResourceInitializesLocalDir fails Intermittently due to IllegalArgumentException from cleanup |  Minor | nodemanager | Daniel Templeton | Daniel Templeton |
+| [HDFS-9949](https://issues.apache.org/jira/browse/HDFS-9949) | Add a test case to ensure that the DataNode does not regenerate its UUID when a storage directory is cleared |  Minor | . | Harsh J | Harsh J |
+| [HADOOP-12738](https://issues.apache.org/jira/browse/HADOOP-12738) | Create unit test to automatically compare Common related classes and core-default.xml |  Minor | . | Ray Chiang | Ray Chiang |
+| [HADOOP-12101](https://issues.apache.org/jira/browse/HADOOP-12101) | Add automatic search of default Configuration variables to TestConfigurationFieldsBase |  Major | test | Ray Chiang | Ray Chiang |
+| [YARN-4947](https://issues.apache.org/jira/browse/YARN-4947) | Test timeout is happening for TestRMWebServicesNodes |  Major | test | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-5069](https://issues.apache.org/jira/browse/YARN-5069) | TestFifoScheduler.testResourceOverCommit race condition |  Major | test | Eric Badger | Eric Badger |
+| [YARN-5114](https://issues.apache.org/jira/browse/YARN-5114) | Add additional tests in TestRMWebServicesApps and rectify testInvalidAppAttempts failure in 2.8 |  Minor | . | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-10375](https://issues.apache.org/jira/browse/HDFS-10375) | Remove redundant TestMiniDFSCluster.testDualClusters |  Trivial | test | John Zhuge | Jiayi Zhou |
+| [YARN-5023](https://issues.apache.org/jira/browse/YARN-5023) | TestAMRestart#testShouldNotCountFailureToMaxAttemptRetry random failure |  Major | . | Bibin A Chundatt | sandflee |
+| [YARN-5318](https://issues.apache.org/jira/browse/YARN-5318) | TestRMAdminService#testRefreshNodesResourceWithFileSystemBasedConfigurationProvider fails intermittently. |  Minor | . | sandflee | Jun Gong |
+| [YARN-5037](https://issues.apache.org/jira/browse/YARN-5037) | TestRMRestart#testQueueMetricsOnRMRestart random failure |  Major | . | sandflee | sandflee |
+| [YARN-5317](https://issues.apache.org/jira/browse/YARN-5317) | testAMRestartNotLostContainerCompleteMsg may fail |  Minor | . | sandflee | sandflee |
+| [YARN-5159](https://issues.apache.org/jira/browse/YARN-5159) | Wrong Javadoc tag in MiniYarnCluster |  Major | documentation | Andras Bokor | Andras Bokor |
+| [MAPREDUCE-6738](https://issues.apache.org/jira/browse/MAPREDUCE-6738) | TestJobListCache.testAddExisting failed intermittently in slow VM testbed |  Minor | . | Junping Du | Junping Du |
+| [YARN-5092](https://issues.apache.org/jira/browse/YARN-5092) | TestRMDelegationTokens fails intermittently |  Major | test | Rohith Sharma K S | Jason Lowe |
+| [HADOOP-10980](https://issues.apache.org/jira/browse/HADOOP-10980) | TestActiveStandbyElector fails occasionally in trunk |  Minor | . | Ted Yu | Eric Badger |
+| [HADOOP-13395](https://issues.apache.org/jira/browse/HADOOP-13395) | Enhance TestKMSAudit |  Minor | kms | Xiao Chen | Xiao Chen |
+| [YARN-5492](https://issues.apache.org/jira/browse/YARN-5492) | TestSubmitApplicationWithRMHA is failing sporadically during precommit builds |  Major | test | Jason Lowe | Vrushali C |
+| [YARN-5544](https://issues.apache.org/jira/browse/YARN-5544) | TestNodeBlacklistingOnAMFailures fails on trunk |  Major | test | Varun Saxena | Sunil G |
+| [HDFS-9745](https://issues.apache.org/jira/browse/HDFS-9745) | TestSecureNNWithQJM#testSecureMode sometimes fails with timeouts |  Minor | . | Xiao Chen | Xiao Chen |
+| [YARN-5389](https://issues.apache.org/jira/browse/YARN-5389) | TestYarnClient#testReservationDelete fails |  Major | . | Rohith Sharma K S | Sean Po |
+| [YARN-5560](https://issues.apache.org/jira/browse/YARN-5560) | Clean up bad exception catching practices in TestYarnClient |  Major | . | Sean Po | Sean Po |
+| [YARN-5608](https://issues.apache.org/jira/browse/YARN-5608) | TestAMRMClient.setup() fails with ArrayOutOfBoundsException |  Major | test | Daniel Templeton | Daniel Templeton |
+| [HDFS-10657](https://issues.apache.org/jira/browse/HDFS-10657) | testAclCLI.xml setfacl test should expect mask r-x |  Minor | . | John Zhuge | John Zhuge |
+| [HDFS-9333](https://issues.apache.org/jira/browse/HDFS-9333) | Some tests using MiniDFSCluster errored complaining port in use |  Minor | test | Kai Zheng | Masatake Iwasaki |
+| [HADOOP-13686](https://issues.apache.org/jira/browse/HADOOP-13686) | Adding additional unit test for Trash (I) |  Major | . | Xiaoyu Yao | Weiwei Yang |
+| [YARN-3568](https://issues.apache.org/jira/browse/YARN-3568) | TestAMRMTokens should use some random port |  Major | test | Gera Shegalov | Takashi Ohnishi |
+| [MAPREDUCE-6804](https://issues.apache.org/jira/browse/MAPREDUCE-6804) | Add timeout when starting JobHistoryServer in MiniMRYarnCluster |  Minor | test | Andras Bokor | Andras Bokor |
+| [HDFS-11272](https://issues.apache.org/jira/browse/HDFS-11272) | Refine the assert messages in TestFSDirAttrOp |  Minor | test | Akira Ajisaka | Jimmy Xiang |
+| [HDFS-11278](https://issues.apache.org/jira/browse/HDFS-11278) | Add missing @Test annotation for TestSafeMode.testSafeModeUtils() |  Trivial | namenode | Lukas Majercak | Lukas Majercak |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [YARN-3356](https://issues.apache.org/jira/browse/YARN-3356) | Capacity Scheduler FiCaSchedulerApp should use ResourceUsage to track used-resources-by-label. |  Major | capacityscheduler, resourcemanager | Wangda Tan | Wangda Tan |
+| [YARN-3345](https://issues.apache.org/jira/browse/YARN-3345) | Add non-exclusive node label API to RMAdmin protocol and NodeLabelsManager |  Major | api, client, resourcemanager | Wangda Tan | Wangda Tan |
+| [HDFS-7854](https://issues.apache.org/jira/browse/HDFS-7854) | Separate class DataStreamer out of DFSOutputStream |  Major | hdfs-client | Li Bo | Li Bo |
+| [HDFS-7713](https://issues.apache.org/jira/browse/HDFS-7713) | Implement mkdirs in the HDFS Web UI |  Major | ui | Ravi Prakash | Ravi Prakash |
+| [YARN-2495](https://issues.apache.org/jira/browse/YARN-2495) | Allow admin specify labels from each NM (Distributed configuration) |  Major | resourcemanager | Wangda Tan | Naganarasimha G R |
+| [HDFS-7893](https://issues.apache.org/jira/browse/HDFS-7893) | Update the POM to create a separate hdfs-client jar |  Major | build | Haohui Mai | Haohui Mai |
+| [YARN-3365](https://issues.apache.org/jira/browse/YARN-3365) | Add support for using the 'tc' tool via container-executor |  Major | nodemanager | Sidharta Seethana | Sidharta Seethana |
+| [HDFS-8034](https://issues.apache.org/jira/browse/HDFS-8034) | Fix TestDFSClientRetries#testDFSClientConfigurationLocateFollowingBlockInitialDelay for Windows |  Minor | test | Xiaoyu Yao | Xiaoyu Yao |
+| [YARN-3110](https://issues.apache.org/jira/browse/YARN-3110) | Few issues in ApplicationHistory web ui |  Minor | applications, timelineserver | Bibin A Chundatt | Naganarasimha G R |
+| [HDFS-8049](https://issues.apache.org/jira/browse/HDFS-8049) | Annotation client implementation as private |  Major | hdfs-client | Tsz Wo Nicholas Sze | Takuya Fukudome |
+| [HDFS-8079](https://issues.apache.org/jira/browse/HDFS-8079) | Separate the client retry conf from DFSConfigKeys |  Major | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8080](https://issues.apache.org/jira/browse/HDFS-8080) | Separate JSON related routines used by WebHdfsFileSystem to a package local class |  Minor | hdfs-client | Haohui Mai | Haohui Mai |
+| [HDFS-8085](https://issues.apache.org/jira/browse/HDFS-8085) | Move CorruptFileBlockIterator to the hdfs.client.impl package |  Minor | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8089](https://issues.apache.org/jira/browse/HDFS-8089) | Move o.a.h.hdfs.web.resources.\* to the client jars |  Minor | build | Haohui Mai | Haohui Mai |
+| [HDFS-8102](https://issues.apache.org/jira/browse/HDFS-8102) | Separate webhdfs retry configuration keys from DFSConfigKeys |  Minor | hdfs-client | Haohui Mai | Haohui Mai |
+| [YARN-1376](https://issues.apache.org/jira/browse/YARN-1376) | NM need to notify the log aggregation status to RM through Node heartbeat |  Major | . | Xuan Gong | Xuan Gong |
+| [HDFS-8100](https://issues.apache.org/jira/browse/HDFS-8100) | Refactor DFSClient.Conf to a standalone class |  Minor | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8103](https://issues.apache.org/jira/browse/HDFS-8103) | Move BlockTokenSecretManager.AccessMode into BlockTokenIdentifier |  Minor | security | Haohui Mai | Haohui Mai |
+| [HDFS-8084](https://issues.apache.org/jira/browse/HDFS-8084) | Separate the client failover conf from DFSConfigKeys |  Major | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8083](https://issues.apache.org/jira/browse/HDFS-8083) | Separate the client write conf from DFSConfigKeys |  Major | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [YARN-3347](https://issues.apache.org/jira/browse/YARN-3347) | Improve YARN log command to get AMContainer logs as well as running containers logs |  Major | log-aggregation | Xuan Gong | Xuan Gong |
+| [YARN-3443](https://issues.apache.org/jira/browse/YARN-3443) | Create a 'ResourceHandler' subsystem to ease addition of support for new resource types on the NM |  Major | nodemanager | Sidharta Seethana | Sidharta Seethana |
+| [HDFS-7701](https://issues.apache.org/jira/browse/HDFS-7701) | Support reporting per storage type quota and usage with hadoop/hdfs shell |  Major | datanode, namenode | Xiaoyu Yao | Peter Shi |
+| [YARN-3361](https://issues.apache.org/jira/browse/YARN-3361) | CapacityScheduler side changes to support non-exclusive node labels |  Major | capacityscheduler | Wangda Tan | Wangda Tan |
+| [YARN-3318](https://issues.apache.org/jira/browse/YARN-3318) | Create Initial OrderingPolicy Framework and FifoOrderingPolicy |  Major | scheduler | Craig Welch | Craig Welch |
+| [YARN-3326](https://issues.apache.org/jira/browse/YARN-3326) | Support RESTful API for getLabelsToNodes |  Minor | resourcemanager | Naganarasimha G R | Naganarasimha G R |
+| [YARN-3354](https://issues.apache.org/jira/browse/YARN-3354) | Container should contains node-labels asked by original ResourceRequests |  Major | api, capacityscheduler, nodemanager, resourcemanager | Wangda Tan | Wangda Tan |
+| [HDFS-8082](https://issues.apache.org/jira/browse/HDFS-8082) | Separate the client read conf from DFSConfigKeys |  Major | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8165](https://issues.apache.org/jira/browse/HDFS-8165) | Move GRANDFATHER\_GENERATION\_STAMP and GRANDFATER\_INODE\_ID to hdfs-client |  Major | build | Haohui Mai | Haohui Mai |
+| [YARN-1402](https://issues.apache.org/jira/browse/YARN-1402) | Related Web UI, CLI changes on exposing client API to check log aggregation status |  Major | . | Xuan Gong | Xuan Gong |
+| [YARN-2696](https://issues.apache.org/jira/browse/YARN-2696) | Queue sorting in CapacityScheduler should consider node label |  Major | capacityscheduler, resourcemanager | Wangda Tan | Wangda Tan |
+| [YARN-3487](https://issues.apache.org/jira/browse/YARN-3487) | CapacityScheduler scheduler lock obtained unnecessarily when calling getQueue |  Critical | capacityscheduler | Jason Lowe | Jason Lowe |
+| [YARN-3136](https://issues.apache.org/jira/browse/YARN-3136) | getTransferredContainers can be a bottleneck during AM registration |  Major | scheduler | Jason Lowe | Sunil G |
+| [HDFS-8169](https://issues.apache.org/jira/browse/HDFS-8169) | Move LocatedBlocks and related classes to hdfs-client |  Major | build, hdfs-client | Haohui Mai | Haohui Mai |
+| [YARN-3463](https://issues.apache.org/jira/browse/YARN-3463) | Integrate OrderingPolicy Framework with CapacityScheduler |  Major | capacityscheduler | Craig Welch | Craig Welch |
+| [HDFS-8185](https://issues.apache.org/jira/browse/HDFS-8185) | Separate client related routines in HAUtil into a new class |  Major | build, hdfs-client | Haohui Mai | Haohui Mai |
+| [YARN-3225](https://issues.apache.org/jira/browse/YARN-3225) | New parameter or CLI for decommissioning node gracefully in RMAdmin CLI |  Major | graceful | Junping Du | Devaraj K |
+| [HDFS-8218](https://issues.apache.org/jira/browse/HDFS-8218) | Move classes that used by ClientProtocol into hdfs-client |  Major | build | Haohui Mai | Haohui Mai |
+| [YARN-3366](https://issues.apache.org/jira/browse/YARN-3366) | Outbound network bandwidth : classify/shape traffic originating from YARN containers |  Major | . | Sidharta Seethana | Sidharta Seethana |
+| [YARN-2605](https://issues.apache.org/jira/browse/YARN-2605) | [RM HA] Rest api endpoints doing redirect incorrectly |  Major | resourcemanager | bc Wong | Xuan Gong |
+| [YARN-3319](https://issues.apache.org/jira/browse/YARN-3319) | Implement a FairOrderingPolicy |  Major | scheduler | Craig Welch | Craig Welch |
+| [YARN-3413](https://issues.apache.org/jira/browse/YARN-3413) | Node label attributes (like exclusivity) should settable via addToClusterNodeLabels but shouldn't be changeable at runtime |  Major | api, client, resourcemanager | Wangda Tan | Wangda Tan |
+| [YARN-2498](https://issues.apache.org/jira/browse/YARN-2498) | Respect labels in preemption policy of capacity scheduler for inter-queue preemption |  Major | resourcemanager | Wangda Tan | Wangda Tan |
+| [YARN-2740](https://issues.apache.org/jira/browse/YARN-2740) | Fix NodeLabelsManager to properly handle node label modifications when distributed node label configuration enabled |  Major | resourcemanager | Wangda Tan | Naganarasimha G R |
+| [YARN-3544](https://issues.apache.org/jira/browse/YARN-3544) | AM logs link missing in the RM UI for a completed app |  Blocker | . | Hitesh Shah | Xuan Gong |
+| [YARN-2619](https://issues.apache.org/jira/browse/YARN-2619) | NodeManager: Add cgroups support for disk I/O isolation |  Major | . | Wei Yan | Varun Vasudev |
+| [HDFS-8086](https://issues.apache.org/jira/browse/HDFS-8086) | Move LeaseRenewer to the hdfs.client.impl package |  Minor | hdfs-client | Tsz Wo Nicholas Sze | Takanobu Asanuma |
+| [YARN-3006](https://issues.apache.org/jira/browse/YARN-3006) | Improve the error message when attempting manual failover with auto-failover enabled |  Minor | . | Akira Ajisaka | Akira Ajisaka |
+| [HDFS-8249](https://issues.apache.org/jira/browse/HDFS-8249) | Separate HdfsConstants into the client and the server side class |  Major | hdfs-client | Haohui Mai | Haohui Mai |
+| [HDFS-8309](https://issues.apache.org/jira/browse/HDFS-8309) | Skip unit test using DataNodeTestUtils#injectDataDirFailure() on Windows |  Minor | test | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-8237](https://issues.apache.org/jira/browse/HDFS-8237) | Move all protocol classes used by ClientProtocol to hdfs-client |  Major | build | Haohui Mai | Haohui Mai |
+| [HDFS-8314](https://issues.apache.org/jira/browse/HDFS-8314) | Move HdfsServerConstants#IO\_FILE\_BUFFER\_SIZE and SMALL\_BUFFER\_SIZE to the users |  Major | . | Haohui Mai | Li Lu |
+| [HDFS-8310](https://issues.apache.org/jira/browse/HDFS-8310) | Fix TestCLI.testAll 'help: help for find' on Windows |  Minor | test | Xiaoyu Yao | Kiran Kumar M R |
+| [YARN-3301](https://issues.apache.org/jira/browse/YARN-3301) | Fix the format issue of the new RM web UI and AHS web UI after YARN-3272 / YARN-3262 |  Major | resourcemanager | Xuan Gong | Xuan Gong |
+| [YARN-3448](https://issues.apache.org/jira/browse/YARN-3448) | Add Rolling Time To Lives Level DB Plugin Capabilities |  Major | timelineserver | Jonathan Eagles | Jonathan Eagles |
+| [YARN-2918](https://issues.apache.org/jira/browse/YARN-2918) | Don't fail RM if queue's configured labels are not existed in cluster-node-labels |  Major | resourcemanager | Rohith Sharma K S | Wangda Tan |
+| [YARN-644](https://issues.apache.org/jira/browse/YARN-644) | Basic null check is not performed on passed in arguments before using them in ContainerManagerImpl.startContainer |  Minor | nodemanager | Omkar Vinit Joshi | Varun Saxena |
+| [YARN-3593](https://issues.apache.org/jira/browse/YARN-3593) | Add label-type and Improve "DEFAULT\_PARTITION" in Node Labels Page |  Major | webapp | Naganarasimha G R | Naganarasimha G R |
+| [YARN-2331](https://issues.apache.org/jira/browse/YARN-2331) | Distinguish shutdown during supervision vs. shutdown for rolling upgrade |  Major | nodemanager | Jason Lowe | Jason Lowe |
+| [YARN-3579](https://issues.apache.org/jira/browse/YARN-3579) | CommonNodeLabelsManager should support NodeLabel instead of string label name when getting node-to-label/label-to-label mappings |  Minor | resourcemanager | Sunil G | Sunil G |
+| [YARN-3505](https://issues.apache.org/jira/browse/YARN-3505) | Node's Log Aggregation Report with SUCCEED should not cached in RMApps |  Critical | log-aggregation | Junping Du | Xuan Gong |
+| [HDFS-8403](https://issues.apache.org/jira/browse/HDFS-8403) | Eliminate retries in TestFileCreation#testOverwriteOpenForWrite |  Major | test | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8157](https://issues.apache.org/jira/browse/HDFS-8157) | Writes to RAM DISK reserve locked memory for block files |  Major | datanode | Arpit Agarwal | Arpit Agarwal |
+| [YARN-3541](https://issues.apache.org/jira/browse/YARN-3541) | Add version info on timeline service / generic history web UI and REST API |  Major | timelineserver | Zhijie Shen | Zhijie Shen |
+| [YARN-3565](https://issues.apache.org/jira/browse/YARN-3565) | NodeHeartbeatRequest/RegisterNodeManagerRequest should use NodeLabel object instead of String |  Blocker | api, client, resourcemanager | Wangda Tan | Naganarasimha G R |
+| [YARN-3583](https://issues.apache.org/jira/browse/YARN-3583) | Support of NodeLabel object instead of plain String in YarnClient side. |  Major | client | Sunil G | Sunil G |
+| [YARN-3609](https://issues.apache.org/jira/browse/YARN-3609) | Move load labels from storage from serviceInit to serviceStart to make it works with RM HA case. |  Major | resourcemanager | Wangda Tan | Wangda Tan |
+| [YARN-3684](https://issues.apache.org/jira/browse/YARN-3684) | Change ContainerExecutor's primary lifecycle methods to use a more extensible mechanism for passing information. |  Major | yarn | Sidharta Seethana | Sidharta Seethana |
+| [HDFS-8454](https://issues.apache.org/jira/browse/HDFS-8454) | Remove unnecessary throttling in TestDatanodeDeath |  Major | test | Arpit Agarwal | Arpit Agarwal |
+| [YARN-3632](https://issues.apache.org/jira/browse/YARN-3632) | Ordering policy should be allowed to reorder an application when demand changes |  Major | capacityscheduler | Craig Welch | Craig Welch |
+| [YARN-3686](https://issues.apache.org/jira/browse/YARN-3686) | CapacityScheduler should trim default\_node\_label\_expression |  Critical | api, client, resourcemanager | Wangda Tan | Sunil G |
+| [YARN-3647](https://issues.apache.org/jira/browse/YARN-3647) | RMWebServices api's should use updated api from CommonNodeLabelsManager to get NodeLabel object |  Major | resourcemanager | Sunil G | Sunil G |
+| [YARN-3581](https://issues.apache.org/jira/browse/YARN-3581) | Deprecate -directlyAccessNodeLabelStore in RMAdminCLI |  Major | api, client, resourcemanager | Wangda Tan | Naganarasimha G R |
+| [HDFS-8482](https://issues.apache.org/jira/browse/HDFS-8482) | Rename BlockInfoContiguous to BlockInfo |  Major | . | Zhe Zhang | Zhe Zhang |
+| [YARN-3700](https://issues.apache.org/jira/browse/YARN-3700) | ATS Web Performance issue at load time when large number of jobs |  Major | resourcemanager, webapp, yarn | Xuan Gong | Xuan Gong |
+| [YARN-3716](https://issues.apache.org/jira/browse/YARN-3716) | Node-label-expression should be included by ResourceRequestPBImpl.toString |  Minor | api | Xianyin Xin | Xianyin Xin |
+| [YARN-3740](https://issues.apache.org/jira/browse/YARN-3740) | Fixed the typo with the configuration name: APPLICATION\_HISTORY\_PREFIX\_MAX\_APPS |  Major | resourcemanager, webapp, yarn | Xuan Gong | Xuan Gong |
+| [YARN-2900](https://issues.apache.org/jira/browse/YARN-2900) | Application (Attempt and Container) Not Found in AHS results in Internal Server Error (500) |  Major | timelineserver | Jonathan Eagles | Mit Desai |
+| [HDFS-8489](https://issues.apache.org/jira/browse/HDFS-8489) | Subclass BlockInfo to represent contiguous blocks |  Major | namenode | Zhe Zhang | Zhe Zhang |
+| [YARN-2392](https://issues.apache.org/jira/browse/YARN-2392) | add more diags about app retry limits on AM failures |  Minor | resourcemanager | Steve Loughran | Steve Loughran |
+| [YARN-3766](https://issues.apache.org/jira/browse/YARN-3766) | ATS Web UI breaks because of YARN-3467 |  Blocker | resourcemanager, webapp, yarn | Xuan Gong | Xuan Gong |
+| [YARN-1462](https://issues.apache.org/jira/browse/YARN-1462) | AHS API and other AHS changes to handle tags for completed MR jobs |  Major | . | Karthik Kambatla | Xuan Gong |
+| [YARN-3787](https://issues.apache.org/jira/browse/YARN-3787) | loading applications by filtering appstartedTime period for ATS Web UI |  Major | resourcemanager, webapp, yarn | Xuan Gong | Xuan Gong |
+| [HDFS-7923](https://issues.apache.org/jira/browse/HDFS-7923) | The DataNodes should rate-limit their full block reports by asking the NN on heartbeat messages |  Major | . | Colin P. McCabe | Colin P. McCabe |
+| [HDFS-8540](https://issues.apache.org/jira/browse/HDFS-8540) | Mover should exit with NO\_MOVE\_BLOCK if no block can be moved |  Major | balancer & mover | Tsz Wo Nicholas Sze | Surendra Singh Lilhore |
+| [YARN-3711](https://issues.apache.org/jira/browse/YARN-3711) | Documentation of ResourceManager HA should explain configurations about listen addresses |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HDFS-8597](https://issues.apache.org/jira/browse/HDFS-8597) | Fix TestFSImage#testZeroBlockSize on Windows |  Major | datanode, test | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-7164](https://issues.apache.org/jira/browse/HDFS-7164) | Feature documentation for HDFS-6581 |  Major | documentation | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8238](https://issues.apache.org/jira/browse/HDFS-8238) | Move ClientProtocol to the hdfs-client |  Major | build | Haohui Mai | Takanobu Asanuma |
+| [HDFS-6249](https://issues.apache.org/jira/browse/HDFS-6249) | Output AclEntry in PBImageXmlWriter |  Minor | tools | Akira Ajisaka | Surendra Singh Lilhore |
+| [YARN-3521](https://issues.apache.org/jira/browse/YARN-3521) | Support return structured NodeLabel objects in REST API |  Major | api, client, resourcemanager | Wangda Tan | Sunil G |
+| [HDFS-8192](https://issues.apache.org/jira/browse/HDFS-8192) | Eviction should key off used locked memory instead of ram disk free space |  Major | datanode | Arpit Agarwal | Arpit Agarwal |
+| [HDFS-8651](https://issues.apache.org/jira/browse/HDFS-8651) | Make hadoop-hdfs-project Native code -Wall-clean |  Major | native | Alan Burlison | Alan Burlison |
+| [HADOOP-12036](https://issues.apache.org/jira/browse/HADOOP-12036) | Consolidate all of the cmake extensions in one directory |  Major | . | Allen Wittenauer | Alan Burlison |
+| [HDFS-7390](https://issues.apache.org/jira/browse/HDFS-7390) | Provide JMX metrics per storage type |  Major | . | Benoy Antony | Benoy Antony |
+| [HADOOP-12104](https://issues.apache.org/jira/browse/HADOOP-12104) | Migrate Hadoop Pipes native build to new CMake framework |  Major | build | Alan Burlison | Alan Burlison |
+| [HADOOP-12112](https://issues.apache.org/jira/browse/HADOOP-12112) | Make hadoop-common-project Native code -Wall-clean |  Major | native | Alan Burlison | Alan Burlison |
+| [HDFS-8493](https://issues.apache.org/jira/browse/HDFS-8493) | Consolidate truncate() related implementation in a single class |  Major | . | Haohui Mai | Rakesh R |
+| [HDFS-8635](https://issues.apache.org/jira/browse/HDFS-8635) | Migrate HDFS native build to new CMake framework |  Major | build | Alan Burlison | Alan Burlison |
+| [YARN-3827](https://issues.apache.org/jira/browse/YARN-3827) | Migrate YARN native build to new CMake framework |  Major | build | Alan Burlison | Alan Burlison |
+| [MAPREDUCE-6376](https://issues.apache.org/jira/browse/MAPREDUCE-6376) | Add avro binary support for jhist files |  Major | jobhistoryserver | Ray Chiang | Ray Chiang |
+| [HDFS-8620](https://issues.apache.org/jira/browse/HDFS-8620) | Clean up the checkstyle warinings about ClientProtocol |  Major | . | Takanobu Asanuma | Takanobu Asanuma |
+| [HDFS-8726](https://issues.apache.org/jira/browse/HDFS-8726) | Move protobuf files that define the client-sever protocols to hdfs-client |  Major | build | Haohui Mai | Haohui Mai |
+| [YARN-1012](https://issues.apache.org/jira/browse/YARN-1012) | Report NM aggregated container resource utilization in heartbeat |  Major | nodemanager | Arun C Murthy | Inigo Goiri |
+| [YARN-3800](https://issues.apache.org/jira/browse/YARN-3800) | Reduce storage footprint for ReservationAllocation |  Major | capacityscheduler, fairscheduler, resourcemanager | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-3445](https://issues.apache.org/jira/browse/YARN-3445) | Cache runningApps in RMNode for getting running apps on given NodeId |  Major | nodemanager, resourcemanager | Junping Du | Junping Du |
+| [YARN-3116](https://issues.apache.org/jira/browse/YARN-3116) | [Collector wireup] We need an assured way to determine if a container is an AM container on NM |  Major | nodemanager, timelineserver | Zhijie Shen | Giovanni Matteo Fumarola |
+| [HDFS-8541](https://issues.apache.org/jira/browse/HDFS-8541) | Mover should exit with NO\_MOVE\_PROGRESS if there is no move progress |  Minor | balancer & mover | Tsz Wo Nicholas Sze | Surendra Singh Lilhore |
+| [HDFS-8742](https://issues.apache.org/jira/browse/HDFS-8742) | Inotify: Support event for OP\_TRUNCATE |  Major | namenode | Surendra Singh Lilhore | Surendra Singh Lilhore |
+| [YARN-1449](https://issues.apache.org/jira/browse/YARN-1449) | AM-NM protocol changes to support container resizing |  Major | api | Wangda Tan (No longer used) | MENG DING |
+| [HADOOP-11974](https://issues.apache.org/jira/browse/HADOOP-11974) | Fix FIONREAD #include on Solaris |  Minor | net | Alan Burlison | Alan Burlison |
+| [YARN-3930](https://issues.apache.org/jira/browse/YARN-3930) | FileSystemNodeLabelsStore should make sure edit log file closed when exception is thrown |  Major | api, client, resourcemanager | Dian Fu | Dian Fu |
+| [YARN-3844](https://issues.apache.org/jira/browse/YARN-3844) | Make hadoop-yarn-project Native code -Wall-clean |  Major | build | Alan Burlison | Alan Burlison |
+| [HDFS-8794](https://issues.apache.org/jira/browse/HDFS-8794) | Improve CorruptReplicasMap#corruptReplicasMap |  Major | . | Yi Liu | Yi Liu |
+| [HDFS-7483](https://issues.apache.org/jira/browse/HDFS-7483) | Display information per tier on the Namenode UI |  Major | . | Benoy Antony | Benoy Antony |
+| [YARN-2003](https://issues.apache.org/jira/browse/YARN-2003) | Support for Application priority : Changes in RM and Capacity Scheduler |  Major | resourcemanager | Sunil G | Sunil G |
+| [HDFS-8721](https://issues.apache.org/jira/browse/HDFS-8721) | Add a metric for number of encryption zones |  Major | encryption | Rakesh R | Rakesh R |
+| [YARN-1645](https://issues.apache.org/jira/browse/YARN-1645) | ContainerManager implementation to support container resizing |  Major | nodemanager | Wangda Tan | MENG DING |
+| [HDFS-8495](https://issues.apache.org/jira/browse/HDFS-8495) | Consolidate append() related implementation into a single class |  Major | namenode | Rakesh R | Rakesh R |
+| [HDFS-8795](https://issues.apache.org/jira/browse/HDFS-8795) | Improve InvalidateBlocks#node2blocks |  Major | . | Yi Liu | Yi Liu |
+| [HADOOP-12184](https://issues.apache.org/jira/browse/HADOOP-12184) | Remove unused Linux-specific constants in NativeIO |  Major | native | Martin Walsh | Martin Walsh |
+| [HDFS-8730](https://issues.apache.org/jira/browse/HDFS-8730) | Clean up the import statements in ClientProtocol |  Minor | . | Takanobu Asanuma | Takanobu Asanuma |
+| [YARN-3969](https://issues.apache.org/jira/browse/YARN-3969) | Allow jobs to be submitted to reservation that is active but does not have any allocations |  Major | capacityscheduler, fairscheduler, resourcemanager | Subru Krishnan | Subru Krishnan |
+| [HADOOP-12170](https://issues.apache.org/jira/browse/HADOOP-12170) | hadoop-common's JNIFlags.cmake is redundant and can be removed |  Minor | native | Alan Burlison | Alan Burlison |
+| [YARN-3656](https://issues.apache.org/jira/browse/YARN-3656) | LowCost: A Cost-Based Placement Agent for YARN Reservations |  Major | capacityscheduler, resourcemanager | Ishai Menache | Jonathan Yaniv |
+| [YARN-3852](https://issues.apache.org/jira/browse/YARN-3852) | Add docker container support to container-executor |  Major | yarn | Sidharta Seethana | Abin Shahab |
+| [YARN-3853](https://issues.apache.org/jira/browse/YARN-3853) | Add docker container runtime support to LinuxContainterExecutor |  Major | yarn | Sidharta Seethana | Sidharta Seethana |
+| [YARN-3867](https://issues.apache.org/jira/browse/YARN-3867) | ContainerImpl changes to support container resizing |  Major | nodemanager | MENG DING | MENG DING |
+| [HDFS-7192](https://issues.apache.org/jira/browse/HDFS-7192) | DN should ignore lazyPersist hint if the writer is not local |  Major | datanode | Arpit Agarwal | Arpit Agarwal |
+| [YARN-433](https://issues.apache.org/jira/browse/YARN-433) | When RM is catching up with node updates then it should not expire acquired containers |  Major | resourcemanager | Bikas Saha | Xuan Gong |
+| [MAPREDUCE-6394](https://issues.apache.org/jira/browse/MAPREDUCE-6394) | Speed up Task processing loop in HsTasksBlock#render() |  Major | jobhistoryserver | Ray Chiang | Ray Chiang |
+| [HADOOP-7824](https://issues.apache.org/jira/browse/HADOOP-7824) | NativeIO.java flags and identifiers must be set correctly for each platform, not hardcoded to their Linux values |  Major | native | Dmytro Shteflyuk | Martin Walsh |
+| [YARN-3543](https://issues.apache.org/jira/browse/YARN-3543) | ApplicationReport should be able to tell whether the Application is AM managed or not. |  Major | api | Spandan Dutta | Rohith Sharma K S |
+| [YARN-4004](https://issues.apache.org/jira/browse/YARN-4004) | container-executor should print output of docker logs if the docker container exits with non-0 exit status |  Major | nodemanager | Varun Vasudev | Varun Vasudev |
+| [YARN-3736](https://issues.apache.org/jira/browse/YARN-3736) | Add RMStateStore apis to store and load accepted reservations for failover |  Major | capacityscheduler, fairscheduler, resourcemanager | Subru Krishnan | Anubhav Dhoot |
+| [YARN-1643](https://issues.apache.org/jira/browse/YARN-1643) | Make ContainersMonitor can support change monitoring size of an allocated container in NM side |  Major | nodemanager | Wangda Tan | MENG DING |
+| [YARN-3974](https://issues.apache.org/jira/browse/YARN-3974) | Refactor the reservation system test cases to use parameterized base test |  Major | capacityscheduler, fairscheduler | Subru Krishnan | Subru Krishnan |
+| [YARN-3948](https://issues.apache.org/jira/browse/YARN-3948) | Display Application Priority in RM Web UI |  Major | webapp | Sunil G | Sunil G |
+| [YARN-3873](https://issues.apache.org/jira/browse/YARN-3873) | pendingApplications in LeafQueue should also use OrderingPolicy |  Major | capacityscheduler | Sunil G | Sunil G |
+| [YARN-3887](https://issues.apache.org/jira/browse/YARN-3887) | Support for changing Application priority during runtime |  Major | capacityscheduler, resourcemanager | Sunil G | Sunil G |
+| [HDFS-8805](https://issues.apache.org/jira/browse/HDFS-8805) | Archival Storage: getStoragePolicy should not need superuser privilege |  Major | balancer & mover, namenode | Hui Zheng | Brahma Reddy Battula |
+| [HDFS-8052](https://issues.apache.org/jira/browse/HDFS-8052) | Move WebHdfsFileSystem into hadoop-hdfs-client |  Major | build | Haohui Mai | Haohui Mai |
+| [YARN-4023](https://issues.apache.org/jira/browse/YARN-4023) | Publish Application Priority to TimelineServer |  Major | timelineserver | Sunil G | Sunil G |
+| [HDFS-8824](https://issues.apache.org/jira/browse/HDFS-8824) | Do not use small blocks for balancing the cluster |  Major | balancer & mover | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [YARN-3534](https://issues.apache.org/jira/browse/YARN-3534) | Collect memory/cpu usage on the node |  Major | nodemanager, resourcemanager | Inigo Goiri | Inigo Goiri |
+| [HDFS-8801](https://issues.apache.org/jira/browse/HDFS-8801) | Convert BlockInfoUnderConstruction as a feature |  Major | namenode | Zhe Zhang | Jing Zhao |
+| [HDFS-8792](https://issues.apache.org/jira/browse/HDFS-8792) | BlockManager#postponedMisreplicatedBlocks should use a LightWeightHashSet to save memory |  Major | . | Yi Liu | Yi Liu |
+| [HDFS-8862](https://issues.apache.org/jira/browse/HDFS-8862) | BlockManager#excessReplicateMap should use a HashMap |  Major | namenode | Yi Liu | Yi Liu |
+| [HDFS-8278](https://issues.apache.org/jira/browse/HDFS-8278) | HDFS Balancer should consider remaining storage % when checking for under-utilized machines |  Major | balancer & mover | Gopal V | Tsz Wo Nicholas Sze |
+| [HDFS-8826](https://issues.apache.org/jira/browse/HDFS-8826) | Balancer may not move blocks efficiently in some cases |  Major | balancer & mover | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-8803](https://issues.apache.org/jira/browse/HDFS-8803) | Move DfsClientConf to hdfs-client |  Major | build | Haohui Mai | Mingliang Liu |
+| [YARN-2923](https://issues.apache.org/jira/browse/YARN-2923) | Support configuration based NodeLabelsProvider Service in Distributed Node Label Configuration Setup |  Major | nodemanager | Naganarasimha G R | Naganarasimha G R |
+| [YARN-1644](https://issues.apache.org/jira/browse/YARN-1644) | RM-NM protocol changes and NodeStatusUpdater implementation to support container resizing |  Major | nodemanager | Wangda Tan | MENG DING |
+| [YARN-3868](https://issues.apache.org/jira/browse/YARN-3868) | ContainerManager recovery for container resizing |  Major | nodemanager | MENG DING | MENG DING |
+| [HDFS-8823](https://issues.apache.org/jira/browse/HDFS-8823) | Move replication factor into individual blocks |  Major | . | Haohui Mai | Haohui Mai |
+| [YARN-221](https://issues.apache.org/jira/browse/YARN-221) | NM should provide a way for AM to tell it not to aggregate logs. |  Major | log-aggregation, nodemanager | Robert Joseph Evans | Ming Ma |
+| [HDFS-8934](https://issues.apache.org/jira/browse/HDFS-8934) | Move ShortCircuitShm to hdfs-client |  Major | build | Mingliang Liu | Mingliang Liu |
+| [HDFS-8948](https://issues.apache.org/jira/browse/HDFS-8948) | Use GenericTestUtils to set log levels in TestPread and TestReplaceDatanodeOnFailure |  Major | build | Mingliang Liu | Mingliang Liu |
+| [YARN-4014](https://issues.apache.org/jira/browse/YARN-4014) | Support user cli interface in for Application Priority |  Major | client, resourcemanager | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-8951](https://issues.apache.org/jira/browse/HDFS-8951) | Move the shortcircuit package to hdfs-client |  Major | build | Mingliang Liu | Mingliang Liu |
+| [HDFS-8248](https://issues.apache.org/jira/browse/HDFS-8248) | Store INodeId instead of the INodeFile object in BlockInfoContiguous |  Major | . | Haohui Mai | Haohui Mai |
+| [HDFS-8962](https://issues.apache.org/jira/browse/HDFS-8962) | Clean up checkstyle warnings in o.a.h.hdfs.DfsClientConf |  Major | build | Mingliang Liu | Mingliang Liu |
+| [YARN-3250](https://issues.apache.org/jira/browse/YARN-3250) | Support admin cli interface in for Application Priority |  Major | resourcemanager | Sunil G | Rohith Sharma K S |
+| [HDFS-8925](https://issues.apache.org/jira/browse/HDFS-8925) | Move BlockReaderLocal to hdfs-client |  Major | build | Mingliang Liu | Mingliang Liu |
+| [HDFS-8980](https://issues.apache.org/jira/browse/HDFS-8980) | Remove unnecessary block replacement in INodeFile |  Major | namenode | Jing Zhao | Jing Zhao |
+| [HDFS-8990](https://issues.apache.org/jira/browse/HDFS-8990) | Move RemoteBlockReader to hdfs-client module |  Major | build | Mingliang Liu | Mingliang Liu |
+| [YARN-4092](https://issues.apache.org/jira/browse/YARN-4092) | RM HA UI redirection needs to be fixed when both RMs are in standby mode |  Major | resourcemanager | Xuan Gong | Xuan Gong |
+| [YARN-4082](https://issues.apache.org/jira/browse/YARN-4082) | Container shouldn't be killed when node's label updated. |  Major | capacity scheduler | Wangda Tan | Wangda Tan |
+| [YARN-2801](https://issues.apache.org/jira/browse/YARN-2801) | Add documentation for node labels feature |  Major | documentation | Gururaj Shetty | Wangda Tan |
+| [YARN-3893](https://issues.apache.org/jira/browse/YARN-3893) | Both RM in active state when Admin#transitionToActive failure from refeshAll() |  Critical | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-8890](https://issues.apache.org/jira/browse/HDFS-8890) | Allow admin to specify which blockpools the balancer should run on |  Major | balancer & mover | Chris Trezzo | Chris Trezzo |
+| [YARN-4101](https://issues.apache.org/jira/browse/YARN-4101) | RM should print alert messages if Zookeeper and Resourcemanager gets connection issue |  Critical | yarn | Yesha Vora | Xuan Gong |
+| [YARN-3970](https://issues.apache.org/jira/browse/YARN-3970) | REST api support for Application Priority |  Major | webapp | Sunil G | Naganarasimha G R |
+| [HDFS-9002](https://issues.apache.org/jira/browse/HDFS-9002) | Move o.a.h.hdfs.net/\*Peer classes to hdfs-client |  Major | build | Mingliang Liu | Mingliang Liu |
+| [HDFS-9012](https://issues.apache.org/jira/browse/HDFS-9012) | Move o.a.h.hdfs.protocol.datatransfer.PipelineAck class to hadoop-hdfs-client module |  Major | build | Mingliang Liu | Mingliang Liu |
+| [HDFS-8984](https://issues.apache.org/jira/browse/HDFS-8984) | Move replication queues related methods in FSNamesystem to BlockManager |  Major | . | Haohui Mai | Haohui Mai |
+| [YARN-2884](https://issues.apache.org/jira/browse/YARN-2884) | Proxying all AM-RM communications |  Major | nodemanager, resourcemanager | Carlo Curino | Kishore Chaliparambil |
+| [YARN-4136](https://issues.apache.org/jira/browse/YARN-4136) | LinuxContainerExecutor loses info when forwarding ResourceHandlerException |  Trivial | nodemanager | Steve Loughran | Bibin A Chundatt |
+| [HDFS-9041](https://issues.apache.org/jira/browse/HDFS-9041) | Move entries in META-INF/services/o.a.h.fs.FileSystem to hdfs-client |  Major | build | Haohui Mai | Mingliang Liu |
+| [HDFS-9010](https://issues.apache.org/jira/browse/HDFS-9010) | Replace NameNode.DEFAULT\_PORT with HdfsClientConfigKeys.DFS\_NAMENODE\_RPC\_PORT\_DEFAULT config key |  Major | build | Mingliang Liu | Mingliang Liu |
+| [YARN-1651](https://issues.apache.org/jira/browse/YARN-1651) | CapacityScheduler side changes to support increase/decrease container resource. |  Major | resourcemanager, scheduler | Wangda Tan | Wangda Tan |
+| [YARN-313](https://issues.apache.org/jira/browse/YARN-313) | Add Admin API for supporting node resource configuration in command line |  Critical | client, graceful | Junping Du | Inigo Goiri |
+| [HDFS-9008](https://issues.apache.org/jira/browse/HDFS-9008) | Balancer#Parameters class could use a builder pattern |  Minor | balancer & mover | Chris Trezzo | Chris Trezzo |
+| [YARN-3635](https://issues.apache.org/jira/browse/YARN-3635) | Get-queue-mapping should be a common interface of YarnScheduler |  Major | scheduler | Wangda Tan | Tan, Wangda |
+| [YARN-3717](https://issues.apache.org/jira/browse/YARN-3717) | Expose app/am/queue's node-label-expression to RM web UI / CLI / REST-API |  Major | . | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-7986](https://issues.apache.org/jira/browse/HDFS-7986) | Allow files / directories to be deleted from the NameNode UI |  Major | ui | Ravi Prakash | Ravi Prakash |
+| [HDFS-7995](https://issues.apache.org/jira/browse/HDFS-7995) | Implement chmod in the HDFS Web UI |  Major | ui | Ravi Prakash | Ravi Prakash |
+| [YARN-4034](https://issues.apache.org/jira/browse/YARN-4034) | Render cluster Max Priority in scheduler metrics in RM web UI |  Minor | resourcemanager, webapp | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-9022](https://issues.apache.org/jira/browse/HDFS-9022) | Move NameNode.getAddress() and NameNode.getUri() to hadoop-hdfs-client |  Major | hdfs-client | Mingliang Liu | Mingliang Liu |
+| [YARN-4171](https://issues.apache.org/jira/browse/YARN-4171) | Resolve findbugs/javac warnings in YARN-1197 branch |  Major | api, nodemanager, resourcemanager | Wangda Tan | Wangda Tan |
+| [YARN-3212](https://issues.apache.org/jira/browse/YARN-3212) | RMNode State Transition Update with DECOMMISSIONING state |  Major | graceful, resourcemanager | Junping Du | Junping Du |
+| [HDFS-9101](https://issues.apache.org/jira/browse/HDFS-9101) | Remove deprecated NameNode.getUri() static helper method |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HDFS-9004](https://issues.apache.org/jira/browse/HDFS-9004) | Add upgrade domain to DatanodeInfo |  Major | . | Ming Ma | Ming Ma |
+| [HDFS-9111](https://issues.apache.org/jira/browse/HDFS-9111) | Move hdfs-client protobuf convert methods from PBHelper to PBHelperClient |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HDFS-9039](https://issues.apache.org/jira/browse/HDFS-9039) | Separate client and server side methods of o.a.h.hdfs.NameNodeProxies |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HDFS-8733](https://issues.apache.org/jira/browse/HDFS-8733) | Keep server related definition in hdfs.proto on server side |  Major | . | Yi Liu | Mingliang Liu |
+| [HDFS-9131](https://issues.apache.org/jira/browse/HDFS-9131) | Move config keys used by hdfs-client to HdfsClientConfigKeys |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HDFS-7529](https://issues.apache.org/jira/browse/HDFS-7529) | Consolidate encryption zone related implementation into a single class |  Major | . | Haohui Mai | Rakesh R |
+| [HDFS-9134](https://issues.apache.org/jira/browse/HDFS-9134) | Move LEASE\_{SOFTLIMIT,HARDLIMIT}\_PERIOD constants from HdfsServerConstants to HdfsConstants |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HADOOP-11918](https://issues.apache.org/jira/browse/HADOOP-11918) | Listing an empty s3a root directory throws FileNotFound. |  Minor | fs/s3 | Lei (Eddy) Xu | Lei (Eddy) Xu |
+| [HDFS-8053](https://issues.apache.org/jira/browse/HDFS-8053) | Move DFSIn/OutputStream and related classes to hadoop-hdfs-client |  Major | build | Haohui Mai | Mingliang Liu |
+| [HDFS-8740](https://issues.apache.org/jira/browse/HDFS-8740) | Move DistributedFileSystem to hadoop-hdfs-client |  Major | build | Yi Liu | Mingliang Liu |
+| [YARN-4141](https://issues.apache.org/jira/browse/YARN-4141) | Runtime Application Priority change should not throw exception for applications at finishing states |  Major | resourcemanager | Sunil G | Sunil G |
+| [HDFS-9165](https://issues.apache.org/jira/browse/HDFS-9165) | Move entries in META-INF/services/o.a.h.fs.FileSystem to hdfs-client |  Major | build | Haohui Mai | Mingliang Liu |
+| [HDFS-9166](https://issues.apache.org/jira/browse/HDFS-9166) | Move hftp / hsftp filesystem to hfds-client |  Major | build | Haohui Mai | Mingliang Liu |
+| [HDFS-8971](https://issues.apache.org/jira/browse/HDFS-8971) | Remove guards when calling LOG.debug() and LOG.trace() in client package |  Major | build | Mingliang Liu | Mingliang Liu |
+| [HDFS-9015](https://issues.apache.org/jira/browse/HDFS-9015) | Refactor TestReplicationPolicy to test different block placement policies |  Major | . | Ming Ma | Ming Ma |
+| [YARN-1897](https://issues.apache.org/jira/browse/YARN-1897) | CLI and core support for signal container functionality |  Major | api | Ming Ma | Ming Ma |
+| [HDFS-9158](https://issues.apache.org/jira/browse/HDFS-9158) | [OEV-Doc] : Document does not mention about "-f" and "-r" options |  Major | . | nijel | nijel |
+| [HDFS-9155](https://issues.apache.org/jira/browse/HDFS-9155) | OEV should treat .XML files as XML even when the file name extension is uppercase |  Major | . | nijel | nijel |
+| [YARN-4215](https://issues.apache.org/jira/browse/YARN-4215) | RMNodeLabels Manager Need to verify and replace node labels for the only modified Node Label Mappings in the request |  Major | resourcemanager | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-9170](https://issues.apache.org/jira/browse/HDFS-9170) | Move libhdfs / fuse-dfs / libwebhdfs to hdfs-client |  Major | . | Haohui Mai | Haohui Mai |
+| [HDFS-9159](https://issues.apache.org/jira/browse/HDFS-9159) | [OIV] : return value of the command is not correct if invalid value specified in "-p (processor)" option |  Major | . | nijel | nijel |
+| [YARN-4140](https://issues.apache.org/jira/browse/YARN-4140) | RM container allocation delayed incase of app submitted to Nodelabel partition |  Major | scheduler | Bibin A Chundatt | Bibin A Chundatt |
+| [YARN-3964](https://issues.apache.org/jira/browse/YARN-3964) | Support NodeLabelsProvider at Resource Manager side |  Major | . | Dian Fu | Dian Fu |
+| [YARN-4230](https://issues.apache.org/jira/browse/YARN-4230) | Increasing container resource while there is no headroom left will cause ResourceManager to crash |  Critical | resourcemanager | MENG DING | MENG DING |
+| [HDFS-9006](https://issues.apache.org/jira/browse/HDFS-9006) | Provide BlockPlacementPolicy that supports upgrade domain |  Major | . | Ming Ma | Ming Ma |
+| [HDFS-9160](https://issues.apache.org/jira/browse/HDFS-9160) | [OIV-Doc] : Missing details of "delimited" for processor options |  Major | . | nijel | nijel |
+| [HDFS-9167](https://issues.apache.org/jira/browse/HDFS-9167) | Update pom.xml in other modules to depend on hdfs-client instead of hdfs |  Major | build | Haohui Mai | Mingliang Liu |
+| [YARN-4255](https://issues.apache.org/jira/browse/YARN-4255) | container-executor does not clean up docker operation command files. |  Minor | . | Sidharta Seethana | Sidharta Seethana |
+| [HDFS-9223](https://issues.apache.org/jira/browse/HDFS-9223) | Code cleanup for DatanodeDescriptor and HeartbeatManager |  Minor | namenode | Jing Zhao | Jing Zhao |
+| [YARN-4258](https://issues.apache.org/jira/browse/YARN-4258) | Add support for controlling capabilities for docker containers |  Major | yarn | Sidharta Seethana | Sidharta Seethana |
+| [HDFS-9157](https://issues.apache.org/jira/browse/HDFS-9157) | [OEV and OIV] : Unnecessary parsing for mandatory arguements if "-h" option is specified as the only option |  Major | . | nijel | nijel |
+| [HADOOP-12475](https://issues.apache.org/jira/browse/HADOOP-12475) | Replace guava Cache with ConcurrentHashMap for caching Connection in ipc Client |  Major | conf, io, ipc | Walter Su | Walter Su |
+| [YARN-4162](https://issues.apache.org/jira/browse/YARN-4162) | CapacityScheduler: Add resource usage by partition and queue capacity by partition to REST API |  Major | api, client, resourcemanager | Naganarasimha G R | Naganarasimha G R |
+| [YARN-4170](https://issues.apache.org/jira/browse/YARN-4170) | AM need to be notified with priority in AllocateResponse |  Major | resourcemanager | Sunil G | Sunil G |
+| [YARN-2556](https://issues.apache.org/jira/browse/YARN-2556) | Tool to measure the performance of the timeline server |  Major | timelineserver | Jonathan Eagles | Chang Li |
+| [YARN-4262](https://issues.apache.org/jira/browse/YARN-4262) | Allow whitelisted users to run privileged docker containers. |  Major | yarn | Sidharta Seethana | Sidharta Seethana |
+| [YARN-4267](https://issues.apache.org/jira/browse/YARN-4267) | Add additional logging to container launch implementations in container-executor |  Major | yarn | Sidharta Seethana | Sidharta Seethana |
+| [YARN-3985](https://issues.apache.org/jira/browse/YARN-3985) | Make ReservationSystem persist state using RMStateStore reservation APIs |  Major | resourcemanager | Anubhav Dhoot | Anubhav Dhoot |
+| [YARN-2513](https://issues.apache.org/jira/browse/YARN-2513) | Host framework UIs in YARN for use with the ATS |  Major | timelineserver | Jonathan Eagles | Jonathan Eagles |
+| [YARN-3739](https://issues.apache.org/jira/browse/YARN-3739) | Add reservation system recovery to RM recovery process |  Major | capacityscheduler, fairscheduler, resourcemanager | Subru Krishnan | Subru Krishnan |
+| [YARN-4243](https://issues.apache.org/jira/browse/YARN-4243) | Add retry on establishing Zookeeper conenction in EmbeddedElectorService#serviceInit |  Major | resourcemanager | Xuan Gong | Xuan Gong |
+| [YARN-3738](https://issues.apache.org/jira/browse/YARN-3738) | Add support for recovery of reserved apps running under dynamic queues |  Major | capacityscheduler, resourcemanager | Subru Krishnan | Subru Krishnan |
+| [YARN-3724](https://issues.apache.org/jira/browse/YARN-3724) | Use POSIX nftw(3) instead of fts(3) |  Major | . | Malcolm Kavalsky | Alan Burlison |
+| [YARN-2729](https://issues.apache.org/jira/browse/YARN-2729) | Support script based NodeLabelsProvider Interface in Distributed Node Label Configuration Setup |  Major | nodemanager | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-9304](https://issues.apache.org/jira/browse/HDFS-9304) | Add HdfsClientConfigKeys class to TestHdfsConfigFields#configurationClasses |  Major | build | Mingliang Liu | Mingliang Liu |
+| [YARN-3216](https://issues.apache.org/jira/browse/YARN-3216) | Max-AM-Resource-Percentage should respect node labels |  Critical | resourcemanager | Wangda Tan | Sunil G |
+| [HADOOP-12457](https://issues.apache.org/jira/browse/HADOOP-12457) | [JDK8] Fix a failure of compiling common by javadoc |  Major | . | Tsuyoshi Ozawa | Akira Ajisaka |
+| [HDFS-9168](https://issues.apache.org/jira/browse/HDFS-9168) | Move client side unit test to hadoop-hdfs-client |  Major | build | Haohui Mai | Haohui Mai |
+| [HDFS-9343](https://issues.apache.org/jira/browse/HDFS-9343) | Empty caller context considered invalid |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HDFS-9362](https://issues.apache.org/jira/browse/HDFS-9362) | TestAuditLogger#testAuditLoggerWithCallContext assumes Unix line endings, fails on Windows. |  Minor | test | Chris Nauroth | Chris Nauroth |
+| [HDFS-9007](https://issues.apache.org/jira/browse/HDFS-9007) | Fix HDFS Balancer to honor upgrade domain policy |  Major | . | Ming Ma | Ming Ma |
+| [HDFS-9379](https://issues.apache.org/jira/browse/HDFS-9379) | Make NNThroughputBenchmark$BlockReportStats support more than 10 datanodes |  Major | test | Mingliang Liu | Mingliang Liu |
+| [YARN-1510](https://issues.apache.org/jira/browse/YARN-1510) | Make NMClient support change container resources |  Major | nodemanager | Wangda Tan (No longer used) | MENG DING |
+| [YARN-4345](https://issues.apache.org/jira/browse/YARN-4345) | yarn rmadmin -updateNodeResource doesn't work |  Critical | graceful, resourcemanager | Sushmitha Sreenivasan | Junping Du |
+| [YARN-1509](https://issues.apache.org/jira/browse/YARN-1509) | Make AMRMClient support send increase container request and get increased/decreased containers |  Major | resourcemanager | Wangda Tan (No longer used) | MENG DING |
+| [HDFS-9387](https://issues.apache.org/jira/browse/HDFS-9387) | Fix namenodeUri parameter parsing in NNThroughputBenchmark |  Major | test | Mingliang Liu | Mingliang Liu |
+| [HDFS-9421](https://issues.apache.org/jira/browse/HDFS-9421) | NNThroughputBenchmark replication test NPE with -namenode option |  Major | benchmarks | Xiaoyu Yao | Mingliang Liu |
+| [YARN-4184](https://issues.apache.org/jira/browse/YARN-4184) | Remove update reservation state api from state store as its not used by ReservationSystem |  Major | capacityscheduler, fairscheduler, resourcemanager | Anubhav Dhoot | Sean Po |
+| [HADOOP-12582](https://issues.apache.org/jira/browse/HADOOP-12582) | Using BytesWritable's getLength() and getBytes() instead of get() and getSize() |  Major | . | Tsuyoshi Ozawa | Akira Ajisaka |
+| [YARN-3454](https://issues.apache.org/jira/browse/YARN-3454) | Add efficient merge operation to RLESparseResourceAllocation |  Major | resourcemanager | Carlo Curino | Carlo Curino |
+| [HDFS-7796](https://issues.apache.org/jira/browse/HDFS-7796) | Include X-editable for slick contenteditable fields in the web UI |  Major | ui | Ravi Prakash | Ravi Prakash |
+| [YARN-3980](https://issues.apache.org/jira/browse/YARN-3980) | Plumb resource-utilization info in node heartbeat through to the scheduler |  Major | resourcemanager, scheduler | Karthik Kambatla | Inigo Goiri |
+| [HADOOP-11954](https://issues.apache.org/jira/browse/HADOOP-11954) | Solaris does not support RLIMIT\_MEMLOCK as in Linux |  Major | . | Malcolm Kavalsky | Alan Burlison |
+| [YARN-4384](https://issues.apache.org/jira/browse/YARN-4384) | updateNodeResource CLI should not accept negative values for resource |  Major | graceful, resourcemanager | Sushmitha Sreenivasan | Junping Du |
+| [HDFS-9438](https://issues.apache.org/jira/browse/HDFS-9438) | TestPipelinesFailover assumes Linux ifconfig |  Minor | test | Alan Burlison | John Zhuge |
+| [YARN-4292](https://issues.apache.org/jira/browse/YARN-4292) | ResourceUtilization should be a part of NodeInfo REST API |  Major | . | Wangda Tan | Sunil G |
+| [HDFS-9436](https://issues.apache.org/jira/browse/HDFS-9436) | Make NNThroughputBenchmark$BlockReportStats run with 10 datanodes by default |  Minor | test | Mingliang Liu | Mingliang Liu |
+| [HDFS-9484](https://issues.apache.org/jira/browse/HDFS-9484) | NNThroughputBenchmark$BlockReportStats should not send empty block reports |  Major | test | Mingliang Liu | Mingliang Liu |
+| [YARN-4405](https://issues.apache.org/jira/browse/YARN-4405) | Support node label store in non-appendable file system |  Major | api, client, resourcemanager | Wangda Tan | Wangda Tan |
+| [HDFS-9214](https://issues.apache.org/jira/browse/HDFS-9214) | Support reconfiguring dfs.datanode.balance.max.concurrent.moves without DN restart |  Major | datanode | Xiaobing Zhou | Xiaobing Zhou |
+| [YARN-4248](https://issues.apache.org/jira/browse/YARN-4248) | REST API for submit/update/delete Reservations |  Major | resourcemanager | Carlo Curino | Carlo Curino |
+| [YARN-4358](https://issues.apache.org/jira/browse/YARN-4358) | Improve relationship between SharingPolicy and ReservationAgent |  Major | capacityscheduler, fairscheduler, resourcemanager | Carlo Curino | Carlo Curino |
+| [YARN-3946](https://issues.apache.org/jira/browse/YARN-3946) | Update exact reason as to why a submitted app is in ACCEPTED state to app's diagnostic message |  Major | capacity scheduler, resourcemanager | Sumit Nigam | Naganarasimha G R |
+| [YARN-4309](https://issues.apache.org/jira/browse/YARN-4309) | Add container launch related debug information to container logs when a container fails |  Major | nodemanager | Varun Vasudev | Varun Vasudev |
+| [YARN-4293](https://issues.apache.org/jira/browse/YARN-4293) | ResourceUtilization should be a part of yarn node CLI |  Major | . | Wangda Tan | Sunil G |
+| [YARN-4416](https://issues.apache.org/jira/browse/YARN-4416) | Deadlock due to synchronised get Methods in AbstractCSQueue |  Minor | capacity scheduler, resourcemanager | Naganarasimha G R | Naganarasimha G R |
+| [YARN-3226](https://issues.apache.org/jira/browse/YARN-3226) | UI changes for decommissioning node |  Major | graceful | Junping Du | Sunil G |
+| [YARN-4164](https://issues.apache.org/jira/browse/YARN-4164) | Retrospect update ApplicationPriority API return type |  Major | resourcemanager | Rohith Sharma K S | Rohith Sharma K S |
+| [YARN-4234](https://issues.apache.org/jira/browse/YARN-4234) | New put APIs in TimelineClient for ats v1.5 |  Major | timelineserver | Xuan Gong | Xuan Gong |
+| [YARN-4098](https://issues.apache.org/jira/browse/YARN-4098) | Document ApplicationPriority feature |  Major | resourcemanager | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-7779](https://issues.apache.org/jira/browse/HDFS-7779) | Support changing ownership, group and replication in HDFS Web UI |  Major | ui | Ravi Prakash | Ravi Prakash |
+| [YARN-2902](https://issues.apache.org/jira/browse/YARN-2902) | Killing a container that is localizing can orphan resources in the DOWNLOADING state |  Major | nodemanager | Jason Lowe | Varun Saxena |
+| [YARN-4393](https://issues.apache.org/jira/browse/YARN-4393) | TestResourceLocalizationService#testFailedDirsResourceRelease fails intermittently |  Major | test | Varun Saxena | Varun Saxena |
+| [YARN-4479](https://issues.apache.org/jira/browse/YARN-4479) | Retrospect app-priority in pendingOrderingPolicy during recovering applications |  Major | api, resourcemanager | Rohith Sharma K S | Rohith Sharma K S |
+| [HDFS-9621](https://issues.apache.org/jira/browse/HDFS-9621) | getListing wrongly associates Erasure Coding policy to pre-existing replicated files under an EC directory |  Critical | erasure-coding | Sushmitha Sreenivasan | Jing Zhao |
+| [YARN-4537](https://issues.apache.org/jira/browse/YARN-4537) | Pull out priority comparison from fifocomparator and use compound comparator for FifoOrdering policy |  Major | capacity scheduler | Rohith Sharma K S | Rohith Sharma K S |
+| [HADOOP-11262](https://issues.apache.org/jira/browse/HADOOP-11262) | Enable YARN to use S3A |  Major | fs/s3 | Thomas Demoor | Pieter Reuse |
+| [YARN-4265](https://issues.apache.org/jira/browse/YARN-4265) | Provide new timeline plugin storage to support fine-grained entity caching |  Major | timelineserver | Li Lu | Li Lu |
+| [YARN-4304](https://issues.apache.org/jira/browse/YARN-4304) | AM max resource configuration per partition to be displayed/updated correctly in UI and in various partition related metrics |  Major | webapp | Sunil G | Sunil G |
+| [YARN-4557](https://issues.apache.org/jira/browse/YARN-4557) | Fix improper Queues sorting in PartitionedQueueComparator when accessible-node-labels=\* |  Major | resourcemanager | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-9601](https://issues.apache.org/jira/browse/HDFS-9601) | NNThroughputBenchmark.BlockReportStats should handle NotReplicatedYetException on adding block |  Major | test | Masatake Iwasaki | Masatake Iwasaki |
+| [YARN-4614](https://issues.apache.org/jira/browse/YARN-4614) | TestApplicationPriority#testApplicationPriorityAllocationWithChangeInPriority fails occasionally |  Major | test | Jason Lowe | Sunil G |
+| [HDFS-9672](https://issues.apache.org/jira/browse/HDFS-9672) | o.a.h.hdfs.TestLeaseRecovery2 fails intermittently |  Major | test | Mingliang Liu | Mingliang Liu |
+| [YARN-4573](https://issues.apache.org/jira/browse/YARN-4573) | TestRMAppTransitions.testAppRunningKill and testAppKilledKilled fail on trunk |  Major | resourcemanager, test | Takashi Ohnishi | Takashi Ohnishi |
+| [YARN-4643](https://issues.apache.org/jira/browse/YARN-4643) | Container recovery is broken with delegating container runtime |  Critical | yarn | Sidharta Seethana | Sidharta Seethana |
+| [YARN-4219](https://issues.apache.org/jira/browse/YARN-4219) | New levelDB cache storage for timeline v1.5 |  Major | . | Li Lu | Li Lu |
+| [YARN-4543](https://issues.apache.org/jira/browse/YARN-4543) | TestNodeStatusUpdater.testStopReentrant fails + JUnit misusage |  Minor | nodemanager | Akihiro Suda | Akihiro Suda |
+| [YARN-4340](https://issues.apache.org/jira/browse/YARN-4340) | Add "list" API to reservation system |  Major | capacityscheduler, fairscheduler, resourcemanager | Carlo Curino | Sean Po |
+| [YARN-4100](https://issues.apache.org/jira/browse/YARN-4100) | Add Documentation for Distributed and Delegated-Centralized Node Labels feature |  Major | api, client, resourcemanager | Naganarasimha G R | Naganarasimha G R |
+| [HDFS-9503](https://issues.apache.org/jira/browse/HDFS-9503) | Replace -namenode option with -fs for NNThroughputBenchmark |  Major | test | Konstantin Shvachko | Mingliang Liu |
+| [HADOOP-12292](https://issues.apache.org/jira/browse/HADOOP-12292) | Make use of DeleteObjects optional |  Major | fs/s3 | Thomas Demoor | Thomas Demoor |
+| [YARN-4667](https://issues.apache.org/jira/browse/YARN-4667) | RM Admin CLI for refreshNodesResources throws NPE when nothing is configured |  Critical | client | Naganarasimha G R | Naganarasimha G R |
+| [HADOOP-12752](https://issues.apache.org/jira/browse/HADOOP-12752) | Improve diagnostics/use of envvar/sysprop credential propagation |  Minor | security | Steve Loughran | Steve Loughran |
+| [YARN-4138](https://issues.apache.org/jira/browse/YARN-4138) | Roll back container resource allocation after resource increase token expires |  Major | api, nodemanager, resourcemanager | MENG DING | MENG DING |
+| [YARN-2575](https://issues.apache.org/jira/browse/YARN-2575) | Create separate ACLs for Reservation create/update/delete/list ops |  Major | capacityscheduler, fairscheduler, resourcemanager | Subru Krishnan | Sean Po |
+| [HADOOP-11613](https://issues.apache.org/jira/browse/HADOOP-11613) | Remove commons-httpclient dependency from hadoop-azure |  Major | . | Akira Ajisaka | Masatake Iwasaki |
+| [HDFS-9084](https://issues.apache.org/jira/browse/HDFS-9084) | Pagination, sorting and filtering of files/directories in the HDFS Web UI |  Major | ui | Ravi Prakash | Ravi Prakash |
+| [YARN-3223](https://issues.apache.org/jira/browse/YARN-3223) | Resource update during NM graceful decommission |  Major | graceful, nodemanager, resourcemanager | Junping Du | Brook Zhou |
+| [YARN-4680](https://issues.apache.org/jira/browse/YARN-4680) | TimerTasks leak in ATS V1.5 Writer |  Major | timelineserver | Xuan Gong | Xuan Gong |
+| [HADOOP-12711](https://issues.apache.org/jira/browse/HADOOP-12711) | Remove dependency on commons-httpclient for ServletUtil |  Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [YARN-4566](https://issues.apache.org/jira/browse/YARN-4566) | TestMiniYarnClusterNodeUtilization sometimes fails on trunk |  Major | test | Takashi Ohnishi | Takashi Ohnishi |
+| [HADOOP-12813](https://issues.apache.org/jira/browse/HADOOP-12813) | Migrate TestRPC and related codes to rebase on ProtobufRpcEngine |  Major | . | Kai Zheng | Kai Zheng |
+| [YARN-4749](https://issues.apache.org/jira/browse/YARN-4749) | Generalize config file handling in container-executor |  Major | nodemanager | Sidharta Seethana | Sidharta Seethana |
+| [YARN-4696](https://issues.apache.org/jira/browse/YARN-4696) | Improving EntityGroupFSTimelineStore on exception handling, test setup, and concurrency |  Major | timelineserver | Steve Loughran | Steve Loughran |
+| [MAPREDUCE-6520](https://issues.apache.org/jira/browse/MAPREDUCE-6520) | Migrate MR Client test cases part 1 |  Trivial | test | Dustin Cote | Dustin Cote |
+| [YARN-4545](https://issues.apache.org/jira/browse/YARN-4545) | Allow YARN distributed shell to use ATS v1.5 APIs |  Major | timelineserver | Li Lu | Li Lu |
+| [YARN-4817](https://issues.apache.org/jira/browse/YARN-4817) | Change Log Level to DEBUG for putDomain call in ATS 1.5 |  Trivial | timelineserver | Xuan Gong | Xuan Gong |
+| [YARN-4108](https://issues.apache.org/jira/browse/YARN-4108) | CapacityScheduler: Improve preemption to only kill containers that would satisfy the incoming request |  Major | capacity scheduler | Wangda Tan | Wangda Tan |
+| [HADOOP-12819](https://issues.apache.org/jira/browse/HADOOP-12819) | Migrate TestSaslRPC and related codes to rebase on ProtobufRpcEngine |  Major | . | Kai Zheng | Kai Zheng |
+| [YARN-4815](https://issues.apache.org/jira/browse/YARN-4815) | ATS 1.5 timelineclient impl try to create attempt directory for every event call |  Major | timelineserver | Xuan Gong | Xuan Gong |
+| [YARN-4814](https://issues.apache.org/jira/browse/YARN-4814) | ATS 1.5 timelineclient impl call flush after every event write |  Major | timelineserver | Xuan Gong | Xuan Gong |
+| [YARN-998](https://issues.apache.org/jira/browse/YARN-998) | Keep NM resource updated through dynamic resource config for RM/NM restart |  Major | graceful, nodemanager, scheduler | Junping Du | Junping Du |
+| [MAPREDUCE-6543](https://issues.apache.org/jira/browse/MAPREDUCE-6543) | Migrate MR Client test cases part 2 |  Trivial | test | Dustin Cote | Dustin Cote |
+| [YARN-4822](https://issues.apache.org/jira/browse/YARN-4822) | Refactor existing Preemption Policy of CS for easier adding new approach to select preemption candidates |  Major | . | Wangda Tan | Wangda Tan |
+| [YARN-4634](https://issues.apache.org/jira/browse/YARN-4634) | Scheduler UI/Metrics need to consider cases like non-queue label mappings |  Major | . | Sunil G | Sunil G |
+| [HADOOP-12169](https://issues.apache.org/jira/browse/HADOOP-12169) | ListStatus on empty dir in S3A lists itself instead of returning an empty list |  Major | fs/s3 | Pieter Reuse | Pieter Reuse |
+| [HDFS-10186](https://issues.apache.org/jira/browse/HDFS-10186) | DirectoryScanner: Improve logs by adding full path of both actual and expected block directories |  Minor | datanode | Rakesh R | Rakesh R |
+| [YARN-4826](https://issues.apache.org/jira/browse/YARN-4826) | Document configuration of ReservationSystem for CapacityScheduler |  Minor | capacity scheduler | Subru Krishnan | Subru Krishnan |
+| [HADOOP-12444](https://issues.apache.org/jira/browse/HADOOP-12444) | Support lazy seek in S3AInputStream |  Major | fs/s3 | Rajesh Balamohan | Rajesh Balamohan |
+| [YARN-4928](https://issues.apache.org/jira/browse/YARN-4928) | Some yarn.server.timeline.\* tests fail on Windows attempting to use a test root path containing a colon |  Minor | test | Gergely Novák | Gergely Novák |
+| [YARN-4168](https://issues.apache.org/jira/browse/YARN-4168) | Test TestLogAggregationService.testLocalFileDeletionOnDiskFull failing |  Critical | test | Steve Loughran | Takashi Ohnishi |
+| [HADOOP-12973](https://issues.apache.org/jira/browse/HADOOP-12973) | make DU pluggable |  Major | . | Elliott Clark | Elliott Clark |
+| [YARN-4886](https://issues.apache.org/jira/browse/YARN-4886) | Add HDFS caller context for EntityGroupFSTimelineStore |  Major | timelineserver | Li Lu | Li Lu |
+| [HDFS-10281](https://issues.apache.org/jira/browse/HDFS-10281) | o.a.h.hdfs.server.namenode.ha.TestPendingCorruptDnMessages fails intermittently |  Major | test | Mingliang Liu | Mingliang Liu |
+| [YARN-4909](https://issues.apache.org/jira/browse/YARN-4909) | Fix intermittent failures of TestRMWebServices And TestRMWithCSRFFilter |  Blocker | . | Brahma Reddy Battula | Bibin A Chundatt |
+| [YARN-4468](https://issues.apache.org/jira/browse/YARN-4468) | Document the general ReservationSystem functionality, and the REST API |  Major | capacityscheduler, fairscheduler, resourcemanager | Carlo Curino | Carlo Curino |
+| [HADOOP-13011](https://issues.apache.org/jira/browse/HADOOP-13011) | Clearly Document the Password Details for Keystore-based Credential Providers |  Major | documentation | Larry McCay | Larry McCay |
+| [YARN-3215](https://issues.apache.org/jira/browse/YARN-3215) | Respect labels in CapacityScheduler when computing headroom |  Major | capacityscheduler | Wangda Tan | Naganarasimha G R |
+| [HDFS-10224](https://issues.apache.org/jira/browse/HDFS-10224) | Implement asynchronous rename for DistributedFileSystem |  Major | fs, hdfs-client | Xiaobing Zhou | Xiaobing Zhou |
+| [YARN-4956](https://issues.apache.org/jira/browse/YARN-4956) | findbug issue on LevelDBCacheTimelineStore |  Major | timelineserver | Xuan Gong | Zhiyuan Yang |
+| [YARN-4851](https://issues.apache.org/jira/browse/YARN-4851) | Metric improvements for ATS v1.5 storage components |  Major | timelineserver | Li Lu | Li Lu |
+| [HADOOP-12749](https://issues.apache.org/jira/browse/HADOOP-12749) | Create a threadpoolexecutor that overrides afterExecute to log uncaught exceptions/errors |  Major | . | Sidharta Seethana | Sidharta Seethana |
+| [HDFS-10346](https://issues.apache.org/jira/browse/HDFS-10346) | Implement asynchronous setPermission/setOwner for DistributedFileSystem |  Major | hdfs, hdfs-client | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-13122](https://issues.apache.org/jira/browse/HADOOP-13122) | Customize User-Agent header sent in HTTP requests by S3A. |  Minor | fs/s3 | Chris Nauroth | Chris Nauroth |
+| [HADOOP-12844](https://issues.apache.org/jira/browse/HADOOP-12844) | Recover when S3A fails on IOException in read() |  Major | fs/s3 | Pieter Reuse | Pieter Reuse |
+| [HADOOP-13028](https://issues.apache.org/jira/browse/HADOOP-13028) | add low level counter metrics for S3A; use in read performance tests |  Major | fs/s3, metrics | Steve Loughran | Steve Loughran |
+| [HADOOP-13113](https://issues.apache.org/jira/browse/HADOOP-13113) | Enable parallel test execution for hadoop-aws. |  Minor | test | Chris Nauroth | Chris Nauroth |
+| [HADOOP-13158](https://issues.apache.org/jira/browse/HADOOP-13158) | S3AFileSystem#toString might throw NullPointerException due to null cannedACL. |  Minor | fs/s3 | Chris Nauroth | Chris Nauroth |
+| [YARN-4832](https://issues.apache.org/jira/browse/YARN-4832) | NM side resource value should get updated if change applied in RM side |  Critical | nodemanager, resourcemanager | Junping Du | Junping Du |
+| [HADOOP-13140](https://issues.apache.org/jira/browse/HADOOP-13140) | FileSystem#initialize must not attempt to create StorageStatistics objects with null or empty schemes |  Major | fs | Brahma Reddy Battula | Mingliang Liu |
+| [HADOOP-13130](https://issues.apache.org/jira/browse/HADOOP-13130) | s3a failures can surface as RTEs, not IOEs |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [YARN-3362](https://issues.apache.org/jira/browse/YARN-3362) | Add node label usage in RM CapacityScheduler web UI |  Major | capacityscheduler, resourcemanager, webapp | Wangda Tan | Naganarasimha G R |
+| [HDFS-10390](https://issues.apache.org/jira/browse/HDFS-10390) | Implement asynchronous setAcl/getAclStatus for DistributedFileSystem |  Major | fs | Xiaobing Zhou | Xiaobing Zhou |
+| [YARN-857](https://issues.apache.org/jira/browse/YARN-857) | Localization failures should be available in container diagnostics |  Critical | . | Hitesh Shah | Vinod Kumar Vavilapalli |
+| [HDFS-8057](https://issues.apache.org/jira/browse/HDFS-8057) | Move BlockReader implementation to the client implementation package |  Major | hdfs-client | Tsz Wo Nicholas Sze | Takanobu Asanuma |
+| [YARN-4957](https://issues.apache.org/jira/browse/YARN-4957) | Add getNewReservation in ApplicationClientProtocol |  Major | applications, client, resourcemanager | Subru Krishnan | Sean Po |
+| [HDFS-10431](https://issues.apache.org/jira/browse/HDFS-10431) | Refactor and speedup TestAsyncDFSRename |  Minor | test | Xiaobing Zhou | Xiaobing Zhou |
+| [YARN-4987](https://issues.apache.org/jira/browse/YARN-4987) | Read cache concurrency issue between read and evict in EntityGroupFS timeline store |  Critical | . | Li Lu | Li Lu |
+| [HDFS-10430](https://issues.apache.org/jira/browse/HDFS-10430) | Reuse FileSystem#access in TestAsyncDFS |  Major | hdfs | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-13162](https://issues.apache.org/jira/browse/HADOOP-13162) | Consider reducing number of getFileStatus calls in S3AFileSystem.mkdirs |  Minor | fs/s3 | Rajesh Balamohan | Rajesh Balamohan |
+| [HADOOP-13131](https://issues.apache.org/jira/browse/HADOOP-13131) | Add tests to verify that S3A supports SSE-S3 encryption |  Minor | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13171](https://issues.apache.org/jira/browse/HADOOP-13171) | Add StorageStatistics to S3A; instrument some more operations |  Minor | fs/s3 | Steve Loughran | Steve Loughran |
+| [YARN-1815](https://issues.apache.org/jira/browse/YARN-1815) | Work preserving recovery of Unmanged AMs |  Critical | resourcemanager | Karthik Kambatla | Subru Krishnan |
+| [YARN-5165](https://issues.apache.org/jira/browse/YARN-5165) | Fix NoOvercommitPolicy to take advantage of RLE representation of plan |  Major | capacityscheduler, fairscheduler, resourcemanager | Carlo Curino | Carlo Curino |
+| [YARN-5185](https://issues.apache.org/jira/browse/YARN-5185) | StageAllocaterGreedyRLE: Fix NPE in corner case |  Major | capacityscheduler, fairscheduler, resourcemanager | Carlo Curino | Carlo Curino |
+| [YARN-4525](https://issues.apache.org/jira/browse/YARN-4525) | Fix bug in RLESparseResourceAllocation.getRangeOverlapping(...) |  Major | . | Ishai Menache | Ishai Menache |
+| [HADOOP-13237](https://issues.apache.org/jira/browse/HADOOP-13237) | s3a initialization against public bucket fails if caller lacks any credentials |  Minor | fs/s3 | Steve Loughran | Chris Nauroth |
+| [YARN-5199](https://issues.apache.org/jira/browse/YARN-5199) | Close LogReader in in AHSWebServices#getStreamingOutput and FileInputStream in NMWebServices#getLogs |  Major | . | Xuan Gong | Xuan Gong |
+| [YARN-3426](https://issues.apache.org/jira/browse/YARN-3426) | Add jdiff support to YARN |  Blocker | . | Li Lu | Li Lu |
+| [YARN-1942](https://issues.apache.org/jira/browse/YARN-1942) | Deprecate toString/fromString methods from ConverterUtils and move them to records classes like ContainerId/ApplicationId, etc. |  Critical | api | Thomas Graves | Wangda Tan |
+| [HADOOP-13241](https://issues.apache.org/jira/browse/HADOOP-13241) | document s3a better |  Minor | documentation, fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13284](https://issues.apache.org/jira/browse/HADOOP-13284) | FileSystemStorageStatistics must not attempt to read non-existent rack-aware read stats in branch-2.8 |  Major | fs | Mingliang Liu | Mingliang Liu |
+| [HADOOP-12975](https://issues.apache.org/jira/browse/HADOOP-12975) | Add jitter to CachingGetSpaceUsed's thread |  Major | . | Elliott Clark | Elliott Clark |
+| [HADOOP-13280](https://issues.apache.org/jira/browse/HADOOP-13280) | FileSystemStorageStatistics#getLong(“readOps“) should return readOps + largeReadOps |  Major | fs | Mingliang Liu | Mingliang Liu |
+| [HADOOP-13288](https://issues.apache.org/jira/browse/HADOOP-13288) | Guard null stats key in FileSystemStorageStatistics |  Major | fs | Mingliang Liu | Mingliang Liu |
+| [HADOOP-13291](https://issues.apache.org/jira/browse/HADOOP-13291) | Probing stats in DFSOpsCountStatistics/S3AStorageStatistics should be correctly implemented |  Major | fs | Mingliang Liu | Mingliang Liu |
+| [HDFS-10538](https://issues.apache.org/jira/browse/HDFS-10538) | Remove AsyncDistributedFileSystem API |  Major | hdfs-client | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-13203](https://issues.apache.org/jira/browse/HADOOP-13203) | S3A: Support fadvise "random" mode for high performance readPositioned() reads |  Major | fs/s3 | Rajesh Balamohan | Rajesh Balamohan |
+| [HADOOP-12229](https://issues.apache.org/jira/browse/HADOOP-12229) | Fix inconsistent subsection titles in filesystem.md |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-12242](https://issues.apache.org/jira/browse/HADOOP-12242) | Add in-page TOC to filesystem specification pages |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
+| [HADOOP-13305](https://issues.apache.org/jira/browse/HADOOP-13305) | Define common statistics names across schemes |  Major | fs | Mingliang Liu | Mingliang Liu |
+| [HADOOP-13283](https://issues.apache.org/jira/browse/HADOOP-13283) | Support reset operation for new global storage statistics and per FS storage stats |  Major | fs | Mingliang Liu | Mingliang Liu |
+| [YARN-5080](https://issues.apache.org/jira/browse/YARN-5080) | Cannot obtain logs using YARN CLI -am for either KILLED or RUNNING AM |  Critical | yarn | Sumana Sathish | Xuan Gong |
+| [HADOOP-13366](https://issues.apache.org/jira/browse/HADOOP-13366) | Fix dead link in o.a.h.fs.CommonConfigurationKeysPublic javadoc |  Minor | documentation | Rakesh R | Rakesh R |
+| [YARN-4484](https://issues.apache.org/jira/browse/YARN-4484) | Available Resource calculation for a queue is not correct when used with labels |  Major | capacity scheduler | Sunil G | Sunil G |
+| [HADOOP-13368](https://issues.apache.org/jira/browse/HADOOP-13368) | DFSOpsCountStatistics$OpType#fromSymbol and s3a.Statistic#fromSymbol should be O(1) operation |  Major | fs | Mingliang Liu | Mingliang Liu |
+| [HADOOP-13212](https://issues.apache.org/jira/browse/HADOOP-13212) | Provide an option to set the socket buffers in S3AFileSystem |  Minor | fs/s3 | Rajesh Balamohan | Rajesh Balamohan |
+| [HDFS-10653](https://issues.apache.org/jira/browse/HDFS-10653) | Optimize conversion from path string to components |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13207](https://issues.apache.org/jira/browse/HADOOP-13207) | Specify FileSystem listStatus, listFiles and RemoteIterator |  Major | documentation, fs | Steve Loughran | Steve Loughran |
+| [HADOOP-13188](https://issues.apache.org/jira/browse/HADOOP-13188) | S3A file-create should throw error rather than overwrite directories |  Minor | fs/s3 | Raymie Stata | Steve Loughran |
+| [HDFS-10642](https://issues.apache.org/jira/browse/HDFS-10642) | TestLazyPersistReplicaRecovery#testDnRestartWithSavedReplicas fails intermittently |  Major | datanode, test | Mingliang Liu | Mingliang Liu |
+| [HDFS-10668](https://issues.apache.org/jira/browse/HDFS-10668) | TestDataNodeMXBean#testDataNodeMXBeanBlockCount fails intermittently |  Major | test | Mingliang Liu | Mingliang Liu |
+| [YARN-5434](https://issues.apache.org/jira/browse/YARN-5434) | Add -client\|server argument for graceful decom |  Blocker | graceful | Robert Kanter | Robert Kanter |
+| [HADOOP-13429](https://issues.apache.org/jira/browse/HADOOP-13429) | Dispose of unnecessary SASL servers |  Major | ipc | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13426](https://issues.apache.org/jira/browse/HADOOP-13426) | More efficiently build IPC responses |  Major | . | Daryn Sharp | Daryn Sharp |
+| [HDFS-10656](https://issues.apache.org/jira/browse/HDFS-10656) | Optimize conversion of byte arrays back to path string |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10674](https://issues.apache.org/jira/browse/HDFS-10674) | Optimize creating a full path from an inode |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [YARN-5342](https://issues.apache.org/jira/browse/YARN-5342) | Improve non-exclusive node partition resource allocation in Capacity Scheduler |  Major | . | Wangda Tan | Sunil G |
+| [HADOOP-13438](https://issues.apache.org/jira/browse/HADOOP-13438) | Optimize IPC server protobuf decoding |  Major | . | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13418](https://issues.apache.org/jira/browse/HADOOP-13418) | Fix javadoc warnings by JDK8 in hadoop-nfs package |  Major | . | Kai Sasaki | Kai Sasaki |
+| [HDFS-10724](https://issues.apache.org/jira/browse/HDFS-10724) | Document the caller context config keys |  Minor | ipc, namenode | Mingliang Liu | Mingliang Liu |
+| [HDFS-10678](https://issues.apache.org/jira/browse/HDFS-10678) | Documenting NNThroughputBenchmark tool |  Major | benchmarks, test | Mingliang Liu | Mingliang Liu |
+| [HDFS-10641](https://issues.apache.org/jira/browse/HDFS-10641) | TestBlockManager#testBlockReportQueueing fails intermittently |  Major | namenode, test | Mingliang Liu | Daryn Sharp |
+| [HADOOP-13324](https://issues.apache.org/jira/browse/HADOOP-13324) | s3a tests don't authenticate with S3 frankfurt (or other V4 auth only endpoints) |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13208](https://issues.apache.org/jira/browse/HADOOP-13208) | S3A listFiles(recursive=true) to do a bulk listObjects instead of walking the pseudo-tree of directories |  Minor | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13405](https://issues.apache.org/jira/browse/HADOOP-13405) | doc for “fs.s3a.acl.default” indicates incorrect values |  Minor | fs/s3 | Shen Yinjie | Shen Yinjie |
+| [HDFS-10711](https://issues.apache.org/jira/browse/HDFS-10711) | Optimize FSPermissionChecker group membership check |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13252](https://issues.apache.org/jira/browse/HADOOP-13252) | Tune S3A provider plugin mechanism |  Minor | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13446](https://issues.apache.org/jira/browse/HADOOP-13446) | Support running isolated unit tests separate from AWS integration tests. |  Major | fs/s3 | Chris Nauroth | Chris Nauroth |
+| [HDFS-10762](https://issues.apache.org/jira/browse/HDFS-10762) | Pass IIP for file status related methods |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10772](https://issues.apache.org/jira/browse/HDFS-10772) | Reduce byte/string conversions for get listing |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [YARN-3940](https://issues.apache.org/jira/browse/YARN-3940) | Application moveToQueue should check NodeLabel permission |  Major | resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-10768](https://issues.apache.org/jira/browse/HDFS-10768) | Optimize mkdir ops |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10655](https://issues.apache.org/jira/browse/HDFS-10655) | Fix path related byte array conversion bugs |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10662](https://issues.apache.org/jira/browse/HDFS-10662) | Optimize UTF8 string/byte conversions |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13547](https://issues.apache.org/jira/browse/HADOOP-13547) | Optimize IPC client protobuf decoding |  Major | . | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13549](https://issues.apache.org/jira/browse/HADOOP-13549) | Eliminate intermediate buffer for server-side PB encoding |  Major | ipc | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13447](https://issues.apache.org/jira/browse/HADOOP-13447) | Refactor S3AFileSystem to support introduction of separate metadata repository and tests. |  Major | fs/s3 | Chris Nauroth | Chris Nauroth |
+| [HADOOP-13541](https://issues.apache.org/jira/browse/HADOOP-13541) | explicitly declare the Joda time version S3A depends on |  Minor | build, fs/s3 | Steve Loughran | Steve Loughran |
+| [YARN-5566](https://issues.apache.org/jira/browse/YARN-5566) | Client-side NM graceful decom is not triggered when jobs finish |  Major | nodemanager | Robert Kanter | Robert Kanter |
+| [HADOOP-10940](https://issues.apache.org/jira/browse/HADOOP-10940) | RPC client does no bounds checking of responses |  Critical | ipc | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13540](https://issues.apache.org/jira/browse/HADOOP-13540) | improve section on troubleshooting s3a auth problems |  Minor | documentation, fs/s3 | Steve Loughran | Steve Loughran |
+| [HDFS-8818](https://issues.apache.org/jira/browse/HDFS-8818) | Allow Balancer to run faster |  Major | balancer & mover | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
+| [HDFS-10673](https://issues.apache.org/jira/browse/HDFS-10673) | Optimize FSPermissionChecker's internal path usage |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13546](https://issues.apache.org/jira/browse/HADOOP-13546) | Override equals and hashCode to avoid connection leakage |  Major | ipc | Xiaobing Zhou | Xiaobing Zhou |
+| [HDFS-10744](https://issues.apache.org/jira/browse/HDFS-10744) | Internally optimize path component resolution |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10805](https://issues.apache.org/jira/browse/HDFS-10805) | Reduce runtime for append test |  Minor | test | Gergely Novák | Gergely Novák |
+| [HADOOP-13544](https://issues.apache.org/jira/browse/HADOOP-13544) | JDiff reports unncessarily show unannotated APIs and cause confusion while our javadocs only show annotated and public APIs |  Blocker | . | Vinod Kumar Vavilapalli | Vinod Kumar Vavilapalli |
+| [HDFS-10779](https://issues.apache.org/jira/browse/HDFS-10779) | Rename does not need to re-solve destination |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10892](https://issues.apache.org/jira/browse/HDFS-10892) | Add unit tests for HDFS command 'dfs -tail' and 'dfs -stat' |  Major | fs, shell, test | Mingliang Liu | Mingliang Liu |
+| [HADOOP-13599](https://issues.apache.org/jira/browse/HADOOP-13599) | s3a close() to be non-synchronized, so avoid risk of deadlock on shutdown |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-12974](https://issues.apache.org/jira/browse/HADOOP-12974) | Create a CachingGetSpaceUsed implementation that uses df |  Major | . | Elliott Clark | Elliott Clark |
+| [HDFS-10851](https://issues.apache.org/jira/browse/HDFS-10851) | FSDirStatAndListingOp: stop passing path as string |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10619](https://issues.apache.org/jira/browse/HDFS-10619) | Cache path in InodesInPath |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10934](https://issues.apache.org/jira/browse/HDFS-10934) | TestDFSShell.testStat fails intermittently |  Major | test | Eric Badger | Eric Badger |
+| [HADOOP-13674](https://issues.apache.org/jira/browse/HADOOP-13674) | S3A can provide a more detailed error message when accessing a bucket through an incorrect S3 endpoint. |  Minor | fs/s3 | Chris Nauroth | Chris Nauroth |
+| [HDFS-10956](https://issues.apache.org/jira/browse/HDFS-10956) | Remove rename/delete performance penalty when not using snapshots |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10896](https://issues.apache.org/jira/browse/HDFS-10896) | Move lock logging logic from FSNamesystem into FSNamesystemLock |  Major | namenode | Erik Krogen | Erik Krogen |
+| [HDFS-10745](https://issues.apache.org/jira/browse/HDFS-10745) | Directly resolve paths into INodesInPath |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10955](https://issues.apache.org/jira/browse/HDFS-10955) | Pass IIP for FSDirAttr methods |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-12977](https://issues.apache.org/jira/browse/HADOOP-12977) | s3a to handle delete("/", true) robustly |  Minor | fs/s3 | Steve Loughran | Steve Loughran |
+| [HDFS-10939](https://issues.apache.org/jira/browse/HDFS-10939) | Reduce performance penalty of encryption zones |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HADOOP-13692](https://issues.apache.org/jira/browse/HADOOP-13692) | hadoop-aws should declare explicit dependency on Jackson 2 jars to prevent classpath conflicts. |  Minor | fs/s3 | Chris Nauroth | Chris Nauroth |
+| [HDFS-10979](https://issues.apache.org/jira/browse/HDFS-10979) | Pass IIP for FSDirDeleteOp methods |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10980](https://issues.apache.org/jira/browse/HDFS-10980) | Optimize check for existence of parent directory |  Major | hdfs | Daryn Sharp | Daryn Sharp |
+| [HDFS-10988](https://issues.apache.org/jira/browse/HDFS-10988) | Refactor TestBalancerBandwidth |  Major | balancer & mover, test | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HDFS-10985](https://issues.apache.org/jira/browse/HDFS-10985) | o.a.h.ha.TestZKFailoverController should not use fixed time sleep before assertions |  Minor | ha, test | Mingliang Liu | Mingliang Liu |
+| [HDFS-10972](https://issues.apache.org/jira/browse/HDFS-10972) | Add unit test for HDFS command 'dfsadmin -getDatanodeInfo' |  Major | fs, shell, test | Xiaobing Zhou | Xiaobing Zhou |
+| [HDFS-10965](https://issues.apache.org/jira/browse/HDFS-10965) | Add unit test for HDFS command 'dfsadmin -printTopology' |  Major | fs, shell, test | Xiaobing Zhou | Xiaobing Zhou |
+| [HDFS-11008](https://issues.apache.org/jira/browse/HDFS-11008) | Change unit test for testing parsing "-source" parameter in Balancer CLI |  Major | test | Mingliang Liu | Mingliang Liu |
+| [HADOOP-13419](https://issues.apache.org/jira/browse/HADOOP-13419) | Fix javadoc warnings by JDK8 in hadoop-common package |  Major | . | Kai Sasaki | Kai Sasaki |
+| [HDFS-10922](https://issues.apache.org/jira/browse/HDFS-10922) | Adding additional unit tests for Trash (II) |  Major | test | Xiaoyu Yao | Weiwei Yang |
+| [HDFS-10906](https://issues.apache.org/jira/browse/HDFS-10906) | Add unit tests for Trash with HDFS encryption zones |  Major | encryption | Xiaoyu Yao | Hanisha Koneru |
+| [HADOOP-13735](https://issues.apache.org/jira/browse/HADOOP-13735) | ITestS3AFileContextStatistics.testStatistics() failing |  Minor | fs/s3 | Steve Loughran | Pieter Reuse |
+| [HDFS-10998](https://issues.apache.org/jira/browse/HDFS-10998) | Add unit tests for HDFS command 'dfsadmin -fetchImage' in HA |  Major | test | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-13727](https://issues.apache.org/jira/browse/HADOOP-13727) | S3A: Reduce high number of connections to EC2 Instance Metadata Service caused by InstanceProfileCredentialsProvider. |  Minor | fs/s3 | Rajesh Balamohan | Chris Nauroth |
+| [HADOOP-12774](https://issues.apache.org/jira/browse/HADOOP-12774) | s3a should use UGI.getCurrentUser.getShortname() for username |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13309](https://issues.apache.org/jira/browse/HADOOP-13309) | Document S3A known limitations in file ownership and permission model. |  Minor | fs/s3 | Chris Nauroth | Chris Nauroth |
+| [HDFS-11011](https://issues.apache.org/jira/browse/HDFS-11011) | Add unit tests for HDFS command 'dfsadmin -set/clrSpaceQuota' |  Major | hdfs-client | Xiaobing Zhou | Xiaobing Zhou |
+| [HADOOP-13614](https://issues.apache.org/jira/browse/HADOOP-13614) | Purge some superfluous/obsolete S3 FS tests that are slowing test runs down |  Minor | fs/s3, test | Steve Loughran | Steve Loughran |
+| [HADOOP-10597](https://issues.apache.org/jira/browse/HADOOP-10597) | RPC Server signals backoff to clients when all request queues are full |  Major | . | Ming Ma | Ming Ma |
+| [HADOOP-13680](https://issues.apache.org/jira/browse/HADOOP-13680) | fs.s3a.readahead.range to use getLongBytes |  Major | fs/s3 | Steve Loughran | Abhishek Modi |
+| [HDFS-11030](https://issues.apache.org/jira/browse/HDFS-11030) | TestDataNodeVolumeFailure#testVolumeFailure is flaky (though passing) |  Major | datanode, test | Mingliang Liu | Mingliang Liu |
+| [HDFS-10997](https://issues.apache.org/jira/browse/HDFS-10997) | Reduce number of path resolving methods |  Major | namenode | Daryn Sharp | Daryn Sharp |
+| [HDFS-11065](https://issues.apache.org/jira/browse/HDFS-11065) | Add space quota tests for heterogenous storages |  Major | hdfs | Xiaobing Zhou | Xiaobing Zhou |
+| [HDFS-11031](https://issues.apache.org/jira/browse/HDFS-11031) | Add additional unit test for DataNode startup behavior when volumes fail |  Major | datanode, test | Mingliang Liu | Mingliang Liu |
+| [HADOOP-10300](https://issues.apache.org/jira/browse/HADOOP-10300) | Allowed deferred sending of call responses |  Major | ipc | Daryn Sharp | Daryn Sharp |
+| [HDFS-11076](https://issues.apache.org/jira/browse/HDFS-11076) | Add unit test for extended Acls |  Major | test | Chen Liang | Chen Liang |
+| [HDFS-11085](https://issues.apache.org/jira/browse/HDFS-11085) | Add unit test for NameNode failing to start when name dir is unwritable |  Major | namenode, test | Mingliang Liu | Xiaobing Zhou |
+| [YARN-5802](https://issues.apache.org/jira/browse/YARN-5802) | updateApplicationPriority api in scheduler should ensure to re-insert app to correct ordering policy |  Critical | capacity scheduler | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-11083](https://issues.apache.org/jira/browse/HDFS-11083) | Add unit test for DFSAdmin -report command |  Major | shell, test | Mingliang Liu | Xiaobing Zhou |
+| [YARN-4498](https://issues.apache.org/jira/browse/YARN-4498) | Application level node labels stats to be available in REST |  Major | api, client, resourcemanager | Bibin A Chundatt | Bibin A Chundatt |
+| [HDFS-11122](https://issues.apache.org/jira/browse/HDFS-11122) | TestDFSAdmin#testReportCommand fails due to timed out |  Minor | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-10872](https://issues.apache.org/jira/browse/HDFS-10872) | Add MutableRate metrics for FSNamesystemLock operations |  Major | namenode | Erik Krogen | Erik Krogen |
+| [HDFS-11105](https://issues.apache.org/jira/browse/HDFS-11105) | TestRBWBlockInvalidation#testRWRInvalidation fails intermittently |  Major | namenode, test | Yiqun Lin | Yiqun Lin |
+| [HADOOP-13822](https://issues.apache.org/jira/browse/HADOOP-13822) | Use GlobalStorageStatistics.INSTANCE.reset() at FileSystem#clearStatistics() |  Major | fs | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-11601](https://issues.apache.org/jira/browse/HADOOP-11601) | Enhance FS spec & tests to mandate FileStatus.getBlocksize() \>0 for non-empty files |  Minor | fs, test | Steve Loughran | Steve Loughran |
+| [HADOOP-13801](https://issues.apache.org/jira/browse/HADOOP-13801) | regression: ITestS3AMiniYarnCluster failing |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-12804](https://issues.apache.org/jira/browse/HADOOP-12804) | Read Proxy Password from Credential Providers in S3 FileSystem |  Minor | fs/s3 | Larry McCay | Larry McCay |
+| [HADOOP-13823](https://issues.apache.org/jira/browse/HADOOP-13823) | s3a rename: fail if dest file exists |  Blocker | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13857](https://issues.apache.org/jira/browse/HADOOP-13857) | S3AUtils.translateException to map (wrapped) InterruptedExceptions to InterruptedIOEs |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13855](https://issues.apache.org/jira/browse/HADOOP-13855) | Fix a couple of the s3a statistic names to be consistent with the rest |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-13257](https://issues.apache.org/jira/browse/HADOOP-13257) | Improve Azure Data Lake contract tests. |  Major | fs/adl | Chris Nauroth | Vishwajeet Dusane |
+| [YARN-4390](https://issues.apache.org/jira/browse/YARN-4390) | Do surgical preemption based on reserved container in CapacityScheduler |  Major | capacity scheduler | Eric Payne | Wangda Tan |
+| [HDFS-8630](https://issues.apache.org/jira/browse/HDFS-8630) | WebHDFS : Support get/set/unset StoragePolicy |  Major | webhdfs | nijel | Surendra Singh Lilhore |
+| [HADOOP-13871](https://issues.apache.org/jira/browse/HADOOP-13871) | ITestS3AInputStreamPerformance.testTimeToOpenAndReadWholeFileBlocks performance awful |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [YARN-2009](https://issues.apache.org/jira/browse/YARN-2009) | CapacityScheduler: Add intra-queue preemption for app priority support |  Major | capacityscheduler | Devaraj K | Sunil G |
+| [YARN-4844](https://issues.apache.org/jira/browse/YARN-4844) | Add getMemorySize/getVirtualCoresSize to o.a.h.y.api.records.Resource |  Blocker | api | Wangda Tan | Wangda Tan |
+| [YARN-4990](https://issues.apache.org/jira/browse/YARN-4990) | Re-direction of a particular log file within in a container in NM UI does not redirect properly to Log Server ( history ) on container completion |  Major | . | Hitesh Shah | Xuan Gong |
+| [YARN-3866](https://issues.apache.org/jira/browse/YARN-3866) | AM-RM protocol changes to support container resizing |  Blocker | api | MENG DING | MENG DING |
+| [HADOOP-13336](https://issues.apache.org/jira/browse/HADOOP-13336) | S3A to support per-bucket configuration |  Major | fs/s3 | Steve Loughran | Steve Loughran |
+| [HDFS-8377](https://issues.apache.org/jira/browse/HDFS-8377) | Support HTTP/2 in datanode |  Major | . | Duo Zhang | Duo Zhang |
+| [HADOOP-14019](https://issues.apache.org/jira/browse/HADOOP-14019) | fix some typos in the s3a docs |  Minor | documentation, fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-14081](https://issues.apache.org/jira/browse/HADOOP-14081) | S3A: Consider avoiding array copy in S3ABlockOutputStream (ByteArrayBlock) |  Minor | fs/s3 | Rajesh Balamohan | Rajesh Balamohan |
+| [YARN-6143](https://issues.apache.org/jira/browse/YARN-6143) | Fix incompatible issue caused by YARN-3583 |  Blocker | rolling upgrade | Wangda Tan | Sunil G |
+| [HADOOP-14113](https://issues.apache.org/jira/browse/HADOOP-14113) | review ADL Docs |  Minor | documentation, fs/adl | Steve Loughran | Steve Loughran |
+| [HADOOP-14138](https://issues.apache.org/jira/browse/HADOOP-14138) | Remove S3A ref from META-INF service discovery, rely on existing core-default entry |  Critical | fs/s3 | Steve Loughran | Steve Loughran |
+| [HADOOP-14123](https://issues.apache.org/jira/browse/HADOOP-14123) | Remove misplaced ADL service provider config file for FileSystem |  Minor | fs/adl | John Zhuge | John Zhuge |
+| [HADOOP-14153](https://issues.apache.org/jira/browse/HADOOP-14153) | ADL module has messed doc structure |  Major | fs/adl | Mingliang Liu | Mingliang Liu |
+| [HADOOP-14173](https://issues.apache.org/jira/browse/HADOOP-14173) | Remove unused AdlConfKeys#ADL\_EVENTS\_TRACKING\_SOURCE |  Trivial | fs/adl | John Zhuge | John Zhuge |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [YARN-3357](https://issues.apache.org/jira/browse/YARN-3357) | Move TestFifoScheduler to FIFO package |  Major | scheduler, test | Rohith Sharma K S | Rohith Sharma K S |
+| [HADOOP-11814](https://issues.apache.org/jira/browse/HADOOP-11814) | Reformat hadoop-annotations, o.a.h.classification.tools |  Minor | . | Li Lu | Li Lu |
+| [MAPREDUCE-6388](https://issues.apache.org/jira/browse/MAPREDUCE-6388) | Remove deprecation warnings from JobHistoryServer classes |  Minor | jobhistoryserver | Ray Chiang | Ray Chiang |
+| [YARN-3026](https://issues.apache.org/jira/browse/YARN-3026) | Move application-specific container allocation logic from LeafQueue to FiCaSchedulerApp |  Major | capacityscheduler | Wangda Tan | Wangda Tan |
+| [HDFS-8938](https://issues.apache.org/jira/browse/HDFS-8938) | Extract BlockToMarkCorrupt and ReplicationWork as standalone classes from BlockManager |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HDFS-9027](https://issues.apache.org/jira/browse/HDFS-9027) | Refactor o.a.h.hdfs.DataStreamer#isLazyPersist() method |  Major | . | Mingliang Liu | Mingliang Liu |
+| [MAPREDUCE-6477](https://issues.apache.org/jira/browse/MAPREDUCE-6477) | Replace usage of deprecated NameNode.DEFAULT\_PORT in TestFileSystem |  Major | . | Mingliang Liu | Mingliang Liu |
+| [MAPREDUCE-6483](https://issues.apache.org/jira/browse/MAPREDUCE-6483) | Replace deprecated method NameNode.getUri() with DFSUtilClient.getNNUri() in TestMRCredentials |  Major | test | Mingliang Liu | Mingliang Liu |
+| [HDFS-9130](https://issues.apache.org/jira/browse/HDFS-9130) | Use GenericTestUtils#setLogLevel to the logging level |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HADOOP-12446](https://issues.apache.org/jira/browse/HADOOP-12446) | Undeprecate createNonRecursive() |  Major | . | Ted Yu | Ted Yu |
+| [HDFS-8979](https://issues.apache.org/jira/browse/HDFS-8979) | Clean up checkstyle warnings in hadoop-hdfs-client module |  Major | . | Mingliang Liu | Mingliang Liu |
+| [HADOOP-11791](https://issues.apache.org/jira/browse/HADOOP-11791) | Update src/site/markdown/releases to include old versions of Hadoop |  Major | build, documentation | Allen Wittenauer | Allen Wittenauer |
+| [HADOOP-12514](https://issues.apache.org/jira/browse/HADOOP-12514) | Make static fields in GenericTestUtils for assertExceptionContains() package-private and final |  Minor | test | Mingliang Liu | Mingliang Liu |
+| [HDFS-9377](https://issues.apache.org/jira/browse/HDFS-9377) | Fix findbugs warnings in FSDirSnapshotOp |  Major | namenode | Mingliang Liu | Mingliang Liu |
+| [HADOOP-12567](https://issues.apache.org/jira/browse/HADOOP-12567) | NPE in SaslRpcServer |  Major | . | Sergey Shelukhin | Sergey Shelukhin |
+| [YARN-4653](https://issues.apache.org/jira/browse/YARN-4653) | Document YARN security model from the perspective of Application Developers |  Major | site | Steve Loughran | Steve Loughran |
+| [HDFS-10200](https://issues.apache.org/jira/browse/HDFS-10200) | Docs for WebHDFS still describe GETDELEGATIONTOKENS operation |  Trivial | documentation | Wellington Chevreuil | Wellington Chevreuil |
+| [HDFS-9353](https://issues.apache.org/jira/browse/HDFS-9353) | Code and comment mismatch in  JavaKeyStoreProvider |  Trivial | . | nijel | Andras Bokor |
+| [HDFS-10984](https://issues.apache.org/jira/browse/HDFS-10984) | Expose nntop output as metrics |  Major | namenode | Siddharth Wagle | Siddharth Wagle |
+| [YARN-5704](https://issues.apache.org/jira/browse/YARN-5704) | Provide config knobs to control enabling/disabling new/work in progress features in container-executor |  Major | yarn | Sidharta Seethana | Sidharta Seethana |
+| [HADOOP-14091](https://issues.apache.org/jira/browse/HADOOP-14091) | AbstractFileSystem implementaion for 'wasbs' scheme |  Major | fs/azure | Varada Hemeswari | Varada Hemeswari |
+| [YARN-6274](https://issues.apache.org/jira/browse/YARN-6274) | Documentation refers to incorrect nodemanager health checker interval property |  Trivial | documentation | Charles Zhang | Weiwei Yang |
+
+
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/RELEASENOTES.2.8.0.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/RELEASENOTES.2.8.0.md
new file mode 100644
index 00000000000..e3c19b6c644
--- /dev/null
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.8.0/RELEASENOTES.2.8.0.md
@@ -0,0 +1,1105 @@
+
+<!---
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+-->
+# "Apache Hadoop"  2.8.0 Release Notes
+
+These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.
+
+
+---
+
+* [HADOOP-7713](https://issues.apache.org/jira/browse/HADOOP-7713) | *Trivial* | **dfs -count -q should label output column**
+
+Added -v option to fs -count command to display a header record in the report.
+
+
+---
+
+* [HADOOP-8934](https://issues.apache.org/jira/browse/HADOOP-8934) | *Minor* | **Shell command ls should include sort options**
+
+Options to sort output of fs -ls comment: -t (mtime), -S (size), -u (atime), -r (reverse)
+
+
+---
+
+* [HADOOP-11226](https://issues.apache.org/jira/browse/HADOOP-11226) | *Major* | **Add a configuration to set ipc.Client's traffic class with IPTOS\_LOWDELAY\|IPTOS\_RELIABILITY**
+
+Use low latency TCP connections for hadoop IPC
+
+
+---
+
+* [HADOOP-9477](https://issues.apache.org/jira/browse/HADOOP-9477) | *Major* | **Add posixGroups support for LDAP groups mapping service**
+
+Add posixGroups support for LDAP groups mapping service. The change in LDAPGroupMapping is compatible with previous scenario. In LDAP, the group mapping between {{posixAccount}} and {{posixGroup}} is different from the general LDAPGroupMapping, one of the differences is the {{"memberUid"}} will be used to mapping {{posixAccount}} and {{posixGroup}}. The feature will handle the mapping in internal when configuration {{hadoop.security.group.mapping.ldap.search.filter.user}} is set as "posixAccount" and {{hadoop.security.group.mapping.ldap.search.filter.group}} is "posixGroup".
+
+
+---
+
+* [YARN-3241](https://issues.apache.org/jira/browse/YARN-3241) | *Major* | **FairScheduler handles "invalid" queue names inconsistently**
+
+FairScheduler does not allow queue names with leading or tailing spaces or empty sub-queue names anymore.
+
+
+---
+
+* [HDFS-7501](https://issues.apache.org/jira/browse/HDFS-7501) | *Major* | **TransactionsSinceLastCheckpoint can be negative on SBNs**
+
+Fixed a bug where the StandbyNameNode's TransactionsSinceLastCheckpoint metric may slide into a negative number after every subsequent checkpoint.
+
+
+---
+
+* [HADOOP-11660](https://issues.apache.org/jira/browse/HADOOP-11660) | *Minor* | **Add support for hardware crc of HDFS checksums on ARM aarch64 architecture**
+
+Add support for aarch64 CRC instructions
+
+
+---
+
+* [HADOOP-11731](https://issues.apache.org/jira/browse/HADOOP-11731) | *Major* | **Rework the changelog and releasenotes**
+
+<!-- markdown -->
+* The release notes now only contains JIRA issues with incompatible changes and actual release notes.  The generated format has been changed from HTML to markdown.
+
+* The changelog is now automatically generated from data stored in JIRA rather than manually maintained. The format has been changed from pure text to markdown as well as containing more of the information that was previously stored in the release notes.
+
+* In order to generate the changes file, python must be installed.
+
+* New -Preleasedocs profile added to maven in order to trigger this functionality.
+
+
+---
+
+* [YARN-3365](https://issues.apache.org/jira/browse/YARN-3365) | *Major* | **Add support for using the 'tc' tool via container-executor**
+
+Adding support for using the 'tc' tool in batch mode via container-executor. This is a prerequisite for traffic-shaping functionality that is necessary to support outbound bandwidth as a resource in YARN.
+
+
+---
+
+* [YARN-3443](https://issues.apache.org/jira/browse/YARN-3443) | *Major* | **Create a 'ResourceHandler' subsystem to ease addition of support for new resource types on the NM**
+
+The current cgroups implementation is closely tied to supporting CPU as a resource . This patch separates out CGroups implementation into a reusable class as well as provides a simple ResourceHandler subsystem that will enable us to add support for new resource types on the NM - e.g Network, Disk etc.
+
+
+---
+
+* [HDFS-6666](https://issues.apache.org/jira/browse/HDFS-6666) | *Minor* | **Abort NameNode and DataNode startup if security is enabled but block access token is not enabled.**
+
+NameNode and DataNode now abort during startup if attempting to run in secure mode, but block access tokens are not enabled by setting configuration property dfs.block.access.token.enable to true in hdfs-site.xml.  Previously, this case logged a warning, because this would be an insecure configuration.
+
+
+---
+
+* [YARN-3021](https://issues.apache.org/jira/browse/YARN-3021) | *Major* | **YARN's delegation-token handling disallows certain trust setups to operate properly over DistCp**
+
+ResourceManager renews delegation tokens for applications. This behavior has been changed to renew tokens only if the token's renewer is a non-empty string. MapReduce jobs can instruct ResourceManager to skip renewal of tokens obtained from certain hosts by specifying the hosts with configuration mapreduce.job.hdfs-servers.token-renewal.exclude=\<host1\>,\<host2\>,..,\<hostN\>.
+
+
+---
+
+* [HADOOP-11746](https://issues.apache.org/jira/browse/HADOOP-11746) | *Major* | **rewrite test-patch.sh**
+
+<!-- markdown -->
+* test-patch.sh now has new output that is different than the previous versions
+* test-patch.sh is now pluggable via the test-patch.d directory, with checkstyle and shellcheck tests included
+* JIRA comments now use much more markup to improve readability
+* test-patch.sh now supports either a file name, a URL, or a JIRA issue as input in developer mode
+* If part of the patch testing code is changed, test-patch.sh will now attempt to re-executing itself using the new version.
+* Some logic to try and reduce the amount of unnecessary tests.  For example, patches that only modify markdown should not run the Java compilation tests.
+* Plugins for checkstyle, shellcheck, and whitespace now execute as necessary.
+* New test code for mvn site
+* A breakdown of the times needed to execute certain blocks as well as a total runtime is now reported to assist in fixing long running tests and optimize the entire process.
+* Several new options
+  * --resetrepo will put test-patch.sh in destructive mode, similar to a normal Jenkins run
+  * --testlist allows one to provide a comma delimited list of test subsystems to forcibly execute
+  * --modulelist to provide a comma delimited list of module tests to execute in addition to the ones that are automatically detected
+  * --offline mode to attempt to stop connecting to the Internet for certain operations
+* test-patch.sh now defaults to the POSIX equivalents on Solaris and Illumos-based operating systems
+* shelldocs.py may be used to generate test-patch.sh API information
+* FindBugs output is now listed on the JIRA comment
+* lots of general code cleanup, including attempts to remove any local state files to reduce potential race conditions
+* Some logic to determine if a patch is for a given major branch using several strategies as well as a particular git ref (using git+ref as part of the name).
+* Some logic to determine if a patch references a particular JIRA issue.
+* Unit tests are only flagged as necessary with native or Java code, since Hadoop has no framework in place yet for other types of unit tests.
+* test-patch now exits with a failure status if problems arise trying to do git checkouts.  Previously the exit code was success.
+
+
+---
+
+* [YARN-3366](https://issues.apache.org/jira/browse/YARN-3366) | *Major* | **Outbound network bandwidth : classify/shape traffic originating from YARN containers**
+
+1) A TrafficController class that provides an implementation for traffic shaping using tc. 
+2) A ResourceHandler implementation for OutboundBandwidth as a resource - isolation/enforcement using cgroups and tc.
+
+
+---
+
+* [HADOOP-11861](https://issues.apache.org/jira/browse/HADOOP-11861) | *Major* | **test-patch.sh rewrite addendum patch**
+
+<!-- markdown -->
+* --build-native=false should work now
+* --branch option lets one specify a branch to test against on the command line
+* On certain Jenkins machines, the artifact directory sometimes gets deleted from outside the test-patch script.  There is now some code to try to detect, alert, and quick exit if that happens.
+* Various semi-critical output and bug fixes
+
+
+---
+
+* [HADOOP-11843](https://issues.apache.org/jira/browse/HADOOP-11843) | *Major* | **Make setting up the build environment easier**
+
+Includes a docker based solution for setting up a build environment with minimal effort.
+
+
+---
+
+* [HADOOP-11813](https://issues.apache.org/jira/browse/HADOOP-11813) | *Minor* | **releasedocmaker.py should use today's date instead of unreleased**
+
+Use today instead of 'Unreleased' in releasedocmaker.py when --usetoday is given as an option.
+
+
+---
+
+* [HDFS-8226](https://issues.apache.org/jira/browse/HDFS-8226) | *Blocker* | **Non-HA rollback compatibility broken**
+
+Non-HA rollback steps have been changed. Run the rollback command on the namenode (`bin/hdfs namenode -rollback`) before starting cluster with '-rollback' option using (sbin/start-dfs.sh -rollback).
+
+
+---
+
+* [HDFS-6888](https://issues.apache.org/jira/browse/HDFS-6888) | *Major* | **Allow selectively audit logging ops**
+
+Specific HDFS ops can be selectively excluded from audit logging via 'dfs.namenode.audit.log.debug.cmdlist' configuration.
+
+
+---
+
+* [HDFS-8157](https://issues.apache.org/jira/browse/HDFS-8157) | *Major* | **Writes to RAM DISK reserve locked memory for block files**
+
+This change requires setting the dfs.datanode.max.locked.memory configuration key to use the HDFS Lazy Persist feature. Its value limits the combined off-heap memory for blocks in RAM via caching and lazy persist writes.
+
+
+---
+
+* [HADOOP-11772](https://issues.apache.org/jira/browse/HADOOP-11772) | *Major* | **RPC Invoker relies on static ClientCache which has synchronized(this) blocks**
+
+The Client#call() methods that are deprecated since 0.23 have been removed.
+
+
+---
+
+* [YARN-3684](https://issues.apache.org/jira/browse/YARN-3684) | *Major* | **Change ContainerExecutor's primary lifecycle methods to use a more extensible mechanism for passing information.**
+
+Modifying key methods in ContainerExecutor to use context objects instead of an argument list. This is more extensible and less brittle.
+
+
+---
+
+* [YARN-2336](https://issues.apache.org/jira/browse/YARN-2336) | *Major* | **Fair scheduler REST api returns a missing '[' bracket JSON for deep queue tree**
+
+Fix FairScheduler's REST api returns a missing '[' blacket JSON for childQueues.
+
+
+---
+
+* [HDFS-8486](https://issues.apache.org/jira/browse/HDFS-8486) | *Blocker* | **DN startup may cause severe data loss**
+
+<!-- markdown -->
+Public service notice:
+* Every restart of a 2.6.x or 2.7.0 DN incurs a risk of unwanted block deletion.
+* Apply this patch if you are running a pre-2.7.1 release.
+
+
+---
+
+* [HDFS-8270](https://issues.apache.org/jira/browse/HDFS-8270) | *Major* | **create() always retried with hardcoded timeout when file already exists with open lease**
+
+Proxy level retries will not be done on AlreadyBeingCreatedExeption for create() op.
+
+
+---
+
+* [YARN-41](https://issues.apache.org/jira/browse/YARN-41) | *Major* | **The RM should handle the graceful shutdown of the NM.**
+
+The behavior of shutdown a NM could be different (if NM work preserving is not enabled): NM will unregister to RM immediately rather than waiting for timeout to be LOST. A new status of NodeStatus - SHUTDOWN is involved which could affect UI, CLI and ClusterMetrics for node's status.
+
+
+---
+
+* [HADOOP-7139](https://issues.apache.org/jira/browse/HADOOP-7139) | *Major* | **Allow appending to existing SequenceFiles**
+
+Existing sequence files can be appended.
+
+
+---
+
+* [HDFS-8582](https://issues.apache.org/jira/browse/HDFS-8582) | *Minor* | **Support getting a list of reconfigurable config properties and do not generate spurious reconfig warnings**
+
+Add a new option "properties" to the "dfsadmin -reconfig" command to get a list of reconfigurable properties.
+
+
+---
+
+* [HDFS-6564](https://issues.apache.org/jira/browse/HDFS-6564) | *Major* | **Use slf4j instead of common-logging in hdfs-client**
+
+Users may need special attention for this change while upgrading to this version. Previously hdfs client was using commons-logging as the logging framework. With this change it will use slf4j framework. For more details about slf4j, please see: http://www.slf4j.org/manual.html. Also, org.apache.hadoop.hdfs.protocol.CachePoolInfo#LOG public static member variable has been removed as it is not used anywhere. Users need to correct their code if any one has a reference to this variable. One can retrieve the named logger via the logging framework of their choice directly like, org.slf4j.Logger LOG = org.slf4j.LoggerFactory.getLogger(org.apache.hadoop.hdfs.protocol.CachePoolInfo.class);
+
+
+---
+
+* [YARN-3823](https://issues.apache.org/jira/browse/YARN-3823) | *Minor* | **Fix mismatch in default values for yarn.scheduler.maximum-allocation-vcores property**
+
+Default value for 'yarn.scheduler.maximum-allocation-vcores' changed from 32 to 4.
+
+
+---
+
+* [HADOOP-5732](https://issues.apache.org/jira/browse/HADOOP-5732) | *Minor* | **Add SFTP FileSystem**
+
+Added SFTP filesystem by using the JSch library.
+
+
+---
+
+* [YARN-3069](https://issues.apache.org/jira/browse/YARN-3069) | *Major* | **Document missing properties in yarn-default.xml**
+
+Documented missing properties and added the regression test to verify that there are no missing properties in yarn-default.xml.
+
+
+---
+
+* [MAPREDUCE-6427](https://issues.apache.org/jira/browse/MAPREDUCE-6427) | *Minor* | **Fix typo in JobHistoryEventHandler**
+
+There is a typo in the event string "WORKFLOW\_ID" (as "WORKLFOW\_ID").  The branch-2 change will publish both event strings for compatibility with consumers, but the misspelled metric will be removed in trunk.
+
+
+---
+
+* [HDFS-7582](https://issues.apache.org/jira/browse/HDFS-7582) | *Major* | **Enforce maximum number of ACL entries separately per access and default.**
+
+Limit on Maximum number of ACL entries(32) will be enforced separately on access and default ACLs. So in total, max. 64 ACL entries can be present in a ACL spec.
+
+
+---
+
+* [HADOOP-12269](https://issues.apache.org/jira/browse/HADOOP-12269) | *Major* | **Update aws-sdk dependency to 1.10.6; move to aws-sdk-s3**
+
+The Maven dependency on aws-sdk has been changed to aws-sdk-s3 and the version bumped. Applications depending on transitive dependencies pulled in by aws-sdk and not aws-sdk-s3 might not work.
+
+
+---
+
+* [HADOOP-12352](https://issues.apache.org/jira/browse/HADOOP-12352) | *Trivial* | **Delay in checkpointing Trash can leave trash for 2 intervals before deleting**
+
+Fixes an Trash related issue wherein a delay in the periodic checkpointing of one user's directory causes the subsequent user directory checkpoints to carry a newer timestamp, thereby delaying their eventual deletion.
+
+
+---
+
+* [HDFS-8900](https://issues.apache.org/jira/browse/HDFS-8900) | *Major* | **Compact XAttrs to optimize memory footprint.**
+
+The config key "dfs.namenode.fs-limits.max-xattr-size" can no longer be set to a value of 0 (previously used to indicate unlimited) or a value greater than 32KB. This is a constraint on xattr size similar to many local filesystems.
+
+
+---
+
+* [HDFS-8890](https://issues.apache.org/jira/browse/HDFS-8890) | *Major* | **Allow admin to specify which blockpools the balancer should run on**
+
+Adds a new blockpools flag to the balancer. This allows admins to specify which blockpools the balancer will run on.
+Usage:
+-blockpools \<comma-separated list of blockpool ids\>
+The balancer will only run on blockpools included in this list.
+
+
+---
+
+* [YARN-4087](https://issues.apache.org/jira/browse/YARN-4087) | *Major* | **Followup fixes after YARN-2019 regarding RM behavior when state-store error occurs**
+
+Set YARN\_FAIL\_FAST to be false by default. If HA is enabled and if there's any state-store error, after the retry operation failed, we always transition RM to standby state.
+
+
+---
+
+* [HADOOP-12384](https://issues.apache.org/jira/browse/HADOOP-12384) | *Major* | **Add "-direct" flag option for fs copy so that user can choose not to create ".\_COPYING\_" file**
+
+An option '-d' added for all command-line copy commands to skip intermediate '.COPYING' file creation.
+
+
+---
+
+* [HDFS-8929](https://issues.apache.org/jira/browse/HDFS-8929) | *Major* | **Add a metric to expose the timestamp of the last journal**
+
+Exposed a metric 'LastJournalTimestamp' for JournalNode
+
+
+---
+
+* [HDFS-7116](https://issues.apache.org/jira/browse/HDFS-7116) | *Major* | **Add a command to get the balancer bandwidth**
+
+Exposed command "-getBalancerBandwidth" in dfsadmin to get the bandwidth of balancer.
+
+
+---
+
+* [HDFS-8829](https://issues.apache.org/jira/browse/HDFS-8829) | *Major* | **Make SO\_RCVBUF and SO\_SNDBUF size configurable for DataTransferProtocol sockets and allow configuring auto-tuning**
+
+HDFS-8829 introduces two new configuration settings: dfs.datanode.transfer.socket.send.buffer.size and dfs.datanode.transfer.socket.recv.buffer.size. These settings can be used to control the socket send buffer and receive buffer sizes respectively on the DataNode for client-DataNode and DataNode-DataNode connections. The default values of both settings are 128KB for backwards compatibility. For optimum performance it is recommended to set these values to zero to enable the OS networking stack to auto-tune buffer sizes.
+
+
+---
+
+* [YARN-313](https://issues.apache.org/jira/browse/YARN-313) | *Critical* | **Add Admin API for supporting node resource configuration in command line**
+
+After this patch, the feature to support NM resource dynamically configuration is completed, so that user can configure NM with new resource without bring NM down or decommissioned.
+Two CLIs are provided to support update resources on individual node or a batch of nodes:
+1. Update resource on single node: yarn rmadmin -updateNodeResource [NodeID] [MemSize] [vCores] 
+2. Update resource on a batch of nodes: yarn rmadmin -refreshNodesResources, that reflect nodes' resource configuration defined in dynamic-resources.xml which is loaded by RM dynamically (like capacity-scheduler.xml or fair-scheduler.xml). 
+The first version of configuration format is:
+\<configuration\>
+  \<property\>
+    \<name\>yarn.resource.dynamic.nodes\</name\>
+    \<value\>h1:1234\</value\>
+  \</property\>
+  \<property\>
+    \<name\>yarn.resource.dynamic.h1:1234.vcores\</name\>
+    \<value\>16\</value\>
+  \</property\>
+  \<property\>
+    \<name\>yarn.resource.dynamic.h1:1234.memory\</name\>
+    \<value\>1024\</value\>
+  \</property\>
+\</configuration\>
+
+
+---
+
+* [HADOOP-12416](https://issues.apache.org/jira/browse/HADOOP-12416) | *Major* | **Trash messages should be handled by Logger instead of being delivered on System.out**
+
+Now trash message is not printed to System.out. It is handled by Logger instead.
+
+
+---
+
+* [HDFS-9063](https://issues.apache.org/jira/browse/HDFS-9063) | *Major* | **Correctly handle snapshot path for getContentSummary**
+
+The jira made the following changes:
+1. Fix a bug to exclude newly-created files from quota usage calculation for a snapshot path. 
+2. Number of snapshots is no longer counted as directory number in getContentSummary result.
+
+
+---
+
+* [HADOOP-12360](https://issues.apache.org/jira/browse/HADOOP-12360) | *Minor* | **Create StatsD metrics2 sink**
+
+Added StatsD metrics2 sink
+
+
+---
+
+* [HDFS-9013](https://issues.apache.org/jira/browse/HDFS-9013) | *Major* | **Deprecate NameNodeMXBean#getNNStarted in branch2 and remove from trunk**
+
+NameNodeMXBean#getNNStarted()  metric is deprecated in branch-2 and removed from trunk.
+
+
+---
+
+* [HADOOP-12437](https://issues.apache.org/jira/browse/HADOOP-12437) | *Major* | **Allow SecurityUtil to lookup alternate hostnames**
+
+HADOOP-12437 introduces two new configuration settings: hadoop.security.dns.interface and hadoop.security.dns.nameserver. These settings can be used to control how Hadoop service instances look up their own hostname and may be required in some multi-homed environments where hosts are configured with multiple hostnames in DNS or hosts files. They supersede the existing settings dfs.datanode.dns.interface and dfs.datanode.dns.nameserver.
+
+
+---
+
+* [HADOOP-12446](https://issues.apache.org/jira/browse/HADOOP-12446) | *Major* | **Undeprecate createNonRecursive()**
+
+FileSystem#createNonRecursive() is undeprecated.
+
+
+---
+
+* [HDFS-8696](https://issues.apache.org/jira/browse/HDFS-8696) | *Major* | **Make the lower and higher watermark in the DN Netty server configurable**
+
+Introduced two new configuration dfs.webhdfs.netty.low.watermark and dfs.webhdfs.netty.high.watermark to enable tuning the size of the buffers of the Netty server inside Datanodes.
+
+
+---
+
+* [HDFS-9184](https://issues.apache.org/jira/browse/HDFS-9184) | *Major* | **Logging HDFS operation's caller context into audit logs**
+
+The feature needs to enabled by setting "hadoop.caller.context.enabled" to true. When the feature is used, additional fields are written into namenode audit log records.
+
+
+---
+
+* [HDFS-9259](https://issues.apache.org/jira/browse/HDFS-9259) | *Major* | **Make SO\_SNDBUF size configurable at DFSClient side for hdfs write scenario**
+
+Introduces a new configuration setting dfs.client.socket.send.buffer.size to control the socket send buffer size for writes. Setting it to zero enables TCP auto-tuning on systems that support it.
+
+
+---
+
+* [HDFS-9311](https://issues.apache.org/jira/browse/HDFS-9311) | *Major* | **Support optional offload of NameNode HA service health checks to a separate RPC server.**
+
+There is now support for offloading HA health check RPC activity to a separate RPC server endpoint running within the NameNode process.  This may improve reliability of HA health checks and prevent spurious failovers in highly overloaded conditions.  For more details, please refer to the hdfs-default.xml documentation for properties dfs.namenode.lifeline.rpc-address, dfs.namenode.lifeline.rpc-bind-host and dfs.namenode.lifeline.handler.count.
+
+
+---
+
+* [HDFS-6200](https://issues.apache.org/jira/browse/HDFS-6200) | *Major* | **Create a separate jar for hdfs-client**
+
+Projects that access HDFS can depend on the hadoop-hdfs-client module instead of the hadoop-hdfs module to avoid pulling in unnecessary dependency.
+Please note that hadoop-hdfs-client module could miss class like ConfiguredFailoverProxyProvider. So if a cluster is in HA deployment, we should still use hadoop-hdfs instead.
+
+
+---
+
+* [HDFS-9057](https://issues.apache.org/jira/browse/HDFS-9057) | *Major* | **allow/disallow snapshots via webhdfs**
+
+Snapshots can be allowed/disallowed on a directory via WebHdfs from users with superuser privilege.
+
+
+---
+
+* [MAPREDUCE-5485](https://issues.apache.org/jira/browse/MAPREDUCE-5485) | *Critical* | **Allow repeating job commit by extending OutputCommitter API**
+
+Previously, the MR job will get failed if AM get restarted for some reason (like node failure, etc.) during its doing commit job no matter if AM attempts reach to the maximum attempts. 
+In this improvement, we add a new API isCommitJobRepeatable() to OutputCommitter interface which to indicate if job's committer can do commitJob again if previous commit work is interrupted by NM/AM failures, etc. The instance of OutputCommitter, which support repeatable job commit (like FileOutputCommitter in algorithm 2), can allow AM to continue the commitJob() after AM restart as a new attempt.
+
+
+---
+
+* [HADOOP-12313](https://issues.apache.org/jira/browse/HADOOP-12313) | *Critical* | **NPE in JvmPauseMonitor when calling stop() before start()**
+
+Allow stop() before start() completed in JvmPauseMonitor
+
+
+---
+
+* [HDFS-9433](https://issues.apache.org/jira/browse/HDFS-9433) | *Major* | **DFS getEZForPath API on a non-existent file should throw FileNotFoundException**
+
+Unify the behavior of dfs.getEZForPath() API when getting a non-existent normal file and non-existent ezone file by throwing FileNotFoundException
+
+
+---
+
+* [HDFS-8335](https://issues.apache.org/jira/browse/HDFS-8335) | *Major* | **FSNamesystem should construct FSPermissionChecker only if permission is enabled**
+
+Only check permissions when permissions enabled in FSDirStatAndListingOp.getFileInfo() and getListingInt()
+
+
+---
+
+* [HDFS-8831](https://issues.apache.org/jira/browse/HDFS-8831) | *Major* | **Trash Support for deletion in HDFS encryption zone**
+
+Add Trash support for deleting files within encryption zones. Deleted files will remain encrypted and they will be moved to a “.Trash” subdirectory under the root of the encryption zone, prefixed by $USER/current. Checkpoint and expunge continue to work like the existing Trash.
+
+
+---
+
+* [HDFS-9214](https://issues.apache.org/jira/browse/HDFS-9214) | *Major* | **Support reconfiguring dfs.datanode.balance.max.concurrent.moves without DN restart**
+
+Steps to reconfigure:
+1. change value of the parameter in corresponding xml configuration file
+2. to reconfigure, run
+    hdfs dfsadmin -reconfig datanode \<dn\_addr\>:\<ipc\_port\> start
+3. repeat step 2 until all DNs are reconfigured
+4. to check status of the most recent reconfigure operation, run
+    hdfs dfsadmin -reconfig datanode \<dn\_addr\>:\<ipc\_port\> status
+5. to query a list reconfigurable properties on DN, run
+    hdfs dfsadmin -reconfig datanode \<dn\_addr\>:\<ipc\_port\> properties
+
+
+---
+
+* [YARN-3623](https://issues.apache.org/jira/browse/YARN-3623) | *Major* | **We should have a config to indicate the Timeline Service version**
+
+Add a new configuration "yarn.timeline-service.version" to indicate what is the current version of the running timeline service. For example, if "yarn.timeline-service.version" is 1.5, and "yarn.timeline-service.enabled" is true, it means the cluster will and should bring up the timeline service v.1.5. On the client side, if the client uses the same version of timeline service, it should succeed. If the client chooses to use a smaller version in spite of this, then depending on how robust the compatibility story is between versions, the results may vary.
+
+
+---
+
+* [YARN-4207](https://issues.apache.org/jira/browse/YARN-4207) | *Major* | **Add a non-judgemental YARN app completion status**
+
+Adds the ENDED attribute to o.a.h.yarn.api.records.FinalApplicationStatus
+
+
+---
+
+* [HADOOP-12657](https://issues.apache.org/jira/browse/HADOOP-12657) | *Minor* | **Add a option to skip newline on empty files with getMerge -nl**
+
+Added -skip-empty-file option to hadoop fs -getmerge command. With the option, delimiter (LF) is not printed for empty files even if -nl option is used.
+
+
+---
+
+* [HADOOP-11252](https://issues.apache.org/jira/browse/HADOOP-11252) | *Critical* | **RPC client does not time out by default**
+
+This fix includes public method interface change.
+A follow-up jira for this incompatibly for branch-2.7 is HADOOP-13579.
+
+
+---
+
+* [HDFS-9047](https://issues.apache.org/jira/browse/HDFS-9047) | *Major* | **Retire libwebhdfs**
+
+libwebhdfs has been retired in 2.8.0 due to the lack of maintenance.
+
+
+---
+
+* [HADOOP-11262](https://issues.apache.org/jira/browse/HADOOP-11262) | *Major* | **Enable YARN to use S3A**
+
+S3A has been made accessible through the FileContext API.
+
+
+---
+
+* [HADOOP-12635](https://issues.apache.org/jira/browse/HADOOP-12635) | *Major* | **Adding Append API support for WASB**
+
+The Azure Blob Storage file system (WASB) now includes optional support for use of the append API by a single writer on a path.  Please note that the implementation differs from the semantics of HDFS append.  HDFS append internally guarantees that only a single writer may append to a path at a given time.  WASB does not enforce this guarantee internally.  Instead, the application must enforce access by a single writer, such as by running single-threaded or relying on some external locking mechanism to coordinate concurrent processes.  Refer to the Azure Blob Storage documentation page for more details on enabling append in configuration.
+
+
+---
+
+* [HADOOP-12651](https://issues.apache.org/jira/browse/HADOOP-12651) | *Major* | **Replace dev-support with wrappers to Yetus**
+
+<!-- markdown -->
+
+* Major portions of dev-support have been replaced with wrappers to Apache Yetus:
+  * releasedocmaker.py is now dev-support/bin/releasedocmaker
+  * shelldocs.py is now dev-support/bin/shelldocs
+  * smart-apply-patch.sh is now dev-support/bin/smart-apply-patch
+  * test-patch.sh is now dev-support/bin/test-patch
+* See the dev-support/README.md file for more details on how to control the wrappers to various degrees.
+
+
+---
+
+* [HDFS-9503](https://issues.apache.org/jira/browse/HDFS-9503) | *Major* | **Replace -namenode option with -fs for NNThroughputBenchmark**
+
+The patch replaces -namenode option with -fs for specifying the remote name node against which the benchmark is running. Before this patch, if '-namenode' was not given, the benchmark would run in standalone mode, ignoring the 'fs.defaultFS' in config file even if it's remote. With this patch, the benchmark, as other tools, will rely on the 'fs.defaultFS' config, which is overridable by -fs command option, to run standalone mode or remote mode.
+
+
+---
+
+* [HADOOP-12426](https://issues.apache.org/jira/browse/HADOOP-12426) | *Minor* | **Add Entry point for Kerberos health check**
+
+Hadoop now includes a shell command named KDiag that helps with diagnosis of Kerberos misconfiguration problems.  Please refer to the Secure Mode documentation for full details on usage of the command.
+
+
+---
+
+* [HADOOP-12805](https://issues.apache.org/jira/browse/HADOOP-12805) | *Major* | **Annotate CanUnbuffer with @InterfaceAudience.Public**
+
+Made CanBuffer interface public for use in client applications.
+
+
+---
+
+* [HADOOP-12548](https://issues.apache.org/jira/browse/HADOOP-12548) | *Major* | **Read s3a creds from a Credential Provider**
+
+The S3A Hadoop-compatible file system now support reading its S3 credentials from the Hadoop Credential Provider API in addition to XML configuration files.
+
+
+---
+
+* [HDFS-9711](https://issues.apache.org/jira/browse/HDFS-9711) | *Major* | **Integrate CSRF prevention filter in WebHDFS.**
+
+WebHDFS now supports options to enforce cross-site request forgery (CSRF) prevention for HTTP requests to both the NameNode and the DataNode.  Please refer to the updated WebHDFS documentation for a description of this feature and further details on how to configure it.
+
+
+---
+
+* [HADOOP-12794](https://issues.apache.org/jira/browse/HADOOP-12794) | *Major* | **Support additional compression levels for GzipCodec**
+
+Added New compression levels for GzipCodec that can be set in zlib.compress.level
+
+
+---
+
+* [HDFS-9425](https://issues.apache.org/jira/browse/HDFS-9425) | *Major* | **Expose number of blocks per volume as a metric**
+
+Number of blocks per volume is made available as a metric.
+
+
+---
+
+* [HADOOP-12668](https://issues.apache.org/jira/browse/HADOOP-12668) | *Critical* | **Support excluding weak Ciphers in HttpServer2 through ssl-server.conf**
+
+The Code Changes include following:
+- Modified DFSUtil.java in Apache HDFS project for supplying new parameter ssl.server.exclude.cipher.list
+- Modified HttpServer2.java in Apache Hadoop-common project to work with new parameter and exclude ciphers using jetty setExcludeCihers method.
+- Modfied associated test classes to owrk with existing code and also cover the newfunctionality in junit
+
+
+---
+
+* [HADOOP-12555](https://issues.apache.org/jira/browse/HADOOP-12555) | *Minor* | **WASB to read credentials from a credential provider**
+
+The hadoop-azure file system now supports configuration of the Azure Storage account credentials using the standard Hadoop Credential Provider API.  For details, please refer to the documentation on hadoop-azure and the Credential Provider API.
+
+
+---
+
+* [MAPREDUCE-6622](https://issues.apache.org/jira/browse/MAPREDUCE-6622) | *Critical* | **Add capability to set JHS job cache to a task-based limit**
+
+Two recommendations for the mapreduce.jobhistory.loadedtasks.cache.size property:
+1) For every 100k of cache size, set the heap size of the Job History Server to 1.2GB.  For example, mapreduce.jobhistory.loadedtasks.cache.size=500000, heap size=6GB.
+2) Make sure that the cache size is larger than the number of tasks required for the largest job run on the cluster.  It might be a good idea to set the value slightly higher (say, 20%) in order to allow for job size growth.
+
+
+---
+
+* [HADOOP-12552](https://issues.apache.org/jira/browse/HADOOP-12552) | *Minor* | **Fix undeclared/unused dependency to httpclient**
+
+Dependency on commons-httpclient::commons-httpclient was removed from hadoop-common. Downstream projects using commons-httpclient transitively provided by hadoop-common need to add explicit dependency to their pom. Since commons-httpclient is EOL, it is recommended to migrate to org.apache.httpcomponents:httpclient which is the successor.
+
+
+---
+
+* [HDFS-8791](https://issues.apache.org/jira/browse/HDFS-8791) | *Blocker* | **block ID-based DN storage layout can be very slow for datanode on ext4**
+
+HDFS-8791 introduces a new datanode layout format. This layout is identical to the previous block id based layout except it has a smaller 32x32 sub-directory structure in each data storage. On startup, the datanode will automatically upgrade it's storages to this new layout. Currently, datanode layout changes support rolling upgrades, on the other hand downgrading is not supported between datanode layout changes and a rollback would be required.
+
+
+---
+
+* [HDFS-9887](https://issues.apache.org/jira/browse/HDFS-9887) | *Major* | **WebHdfs socket timeouts should be configurable**
+
+Added new configuration options: dfs.webhdfs.socket.connect-timeout and dfs.webhdfs.socket.read-timeout both defaulting to 60s.
+
+
+---
+
+* [HADOOP-11792](https://issues.apache.org/jira/browse/HADOOP-11792) | *Major* | **Remove all of the CHANGES.txt files**
+
+With the introduction of the markdown-formatted and automatically built changes file, the CHANGES.txt files have been eliminated.
+
+
+---
+
+* [HDFS-9239](https://issues.apache.org/jira/browse/HDFS-9239) | *Major* | **DataNode Lifeline Protocol: an alternative protocol for reporting DataNode liveness**
+
+This release adds a new feature called the DataNode Lifeline Protocol.  If configured, then DataNodes can report that they are still alive to the NameNode via a fallback protocol, separate from the existing heartbeat messages.  This can prevent the NameNode from incorrectly marking DataNodes as stale or dead in highly overloaded clusters where heartbeat processing is suffering delays.  For more information, please refer to the hdfs-default.xml documentation for several new configuration properties: dfs.namenode.lifeline.rpc-address, dfs.namenode.lifeline.rpc-bind-host, dfs.datanode.lifeline.interval.seconds, dfs.namenode.lifeline.handler.ratio and dfs.namenode.lifeline.handler.count.
+
+
+---
+
+* [YARN-4785](https://issues.apache.org/jira/browse/YARN-4785) | *Major* | **inconsistent value type of the "type" field for LeafQueueInfo in response of RM REST API - cluster/scheduler**
+
+Fix inconsistent value type ( String and Array ) of the "type" field for LeafQueueInfo in response of RM REST API
+
+
+---
+
+* [MAPREDUCE-6670](https://issues.apache.org/jira/browse/MAPREDUCE-6670) | *Minor* | **TestJobListCache#testEviction sometimes fails on Windows with timeout**
+
+Backport the fix to 2.7 and 2.8
+
+
+---
+
+* [HDFS-9945](https://issues.apache.org/jira/browse/HDFS-9945) | *Major* | **Datanode command for evicting writers**
+
+This new dfsadmin command, evictWriters, stops active block writing activities on a data node. The affected writes will continue without the node after a write pipeline recovery. This is useful when data node decommissioning is blocked by slow writers. If issued against a non-decommissioing data node, all current writers will be stopped, but new write requests will continue to be served.
+
+
+---
+
+* [HADOOP-12963](https://issues.apache.org/jira/browse/HADOOP-12963) | *Minor* | **Allow using path style addressing for accessing the s3 endpoint**
+
+Add new flag to allow supporting path style addressing for s3a
+
+
+---
+
+* [HDFS-3702](https://issues.apache.org/jira/browse/HDFS-3702) | *Minor* | **Add an option for NOT writing the blocks locally if there is a datanode on the same box as the client**
+
+This patch will attempt to allocate all replicas to remote DataNodes, by adding local DataNode to the excluded DataNodes. If no sufficient replicas can be obtained, it will fall back to default block placement policy, which writes one replica to local DataNode.
+
+
+---
+
+* [HDFS-9902](https://issues.apache.org/jira/browse/HDFS-9902) | *Major* | **Support different values of dfs.datanode.du.reserved per storage type**
+
+Reserved space can be configured independently for different storage types for clusters with heterogeneous storage. The 'dfs.datanode.du.reserved' property name can be suffixed with a storage types (i.e. one of ssd, disk, archival or ram\_disk). e.g. reserved space for RAM\_DISK storage can be configured using the property 'dfs.datanode.du.reserved.ram\_disk'. If specific storage type reservation is not configured then the value specified by 'dfs.datanode.du.reserved' will be used for all volumes.
+
+
+---
+
+* [HDFS-10324](https://issues.apache.org/jira/browse/HDFS-10324) | *Major* | **Trash directory in an encryption zone should be pre-created with correct permissions**
+
+HDFS will create a ".Trash" subdirectory when creating a new encryption zone to support soft delete for files deleted within the encryption zone. A new "crypto -provisionTrash" command has been introduced to provision trash directories for encryption zones created with Apache Hadoop minor releases prior to 2.8.0.
+
+
+---
+
+* [HADOOP-13122](https://issues.apache.org/jira/browse/HADOOP-13122) | *Minor* | **Customize User-Agent header sent in HTTP requests by S3A.**
+
+S3A now includes the current Hadoop version in the User-Agent string passed through the AWS SDK to the S3 service.  Users also may include optional additional information to identify their application.  See the documentation of configuration property fs.s3a.user.agent.prefix for further details.
+
+
+---
+
+* [HADOOP-12723](https://issues.apache.org/jira/browse/HADOOP-12723) | *Major* | **S3A: Add ability to plug in any AWSCredentialsProvider**
+
+Users can integrate a custom credential provider with S3A.  See documentation of configuration property fs.s3a.aws.credentials.provider for further details.
+
+
+---
+
+* [MAPREDUCE-6607](https://issues.apache.org/jira/browse/MAPREDUCE-6607) | *Minor* | **Enable regex pattern matching when mapreduce.task.files.preserve.filepattern is set**
+
+Before this fix, the files in .staging directory are always preserved when mapreduce.task.files.preserve.filepattern is set. After this fix, the files in .staging directory are preserved if the name of the directory matches the regex pattern specified by mapreduce.task.files.preserve.filepattern.
+
+
+---
+
+* [YARN-5035](https://issues.apache.org/jira/browse/YARN-5035) | *Major* | **FairScheduler: Adjust maxAssign dynamically when assignMultiple is turned on**
+
+Introducing a new configuration "yarn.scheduler.fair.dynamic.max.assign" to dynamically determine the resources to assign per heartbeat when assignmultiple is turned on. When turned on, the scheduler allocates roughly half of the remaining resources overriding any max.assign settings configured. This is turned ON by default.
+
+
+---
+
+* [YARN-5132](https://issues.apache.org/jira/browse/YARN-5132) | *Critical* | **Exclude generated protobuf sources from YARN Javadoc build**
+
+Exclude javadocs for proto-generated java classes.
+
+
+---
+
+* [HADOOP-13105](https://issues.apache.org/jira/browse/HADOOP-13105) | *Major* | **Support timeouts in LDAP queries in LdapGroupsMapping.**
+
+This patch adds two new config keys for supporting timeouts in LDAP query operations. The property "hadoop.security.group.mapping.ldap.connection.timeout.ms" is the connection timeout (in milliseconds), within which period if the LDAP provider doesn't establish a connection, it will abort the connect attempt. The property "hadoop.security.group.mapping.ldap.read.timeout.ms" is the read timeout (in milliseconds), within which period if the LDAP provider doesn't get a LDAP response, it will abort the read attempt.
+
+
+---
+
+* [HADOOP-13155](https://issues.apache.org/jira/browse/HADOOP-13155) | *Major* | **Implement TokenRenewer to renew and cancel delegation tokens in KMS**
+
+Enables renewal and cancellation of KMS delegation tokens. hadoop.security.key.provider.path needs to be configured to reach the key provider.
+
+
+---
+
+* [HADOOP-12807](https://issues.apache.org/jira/browse/HADOOP-12807) | *Minor* | **S3AFileSystem should read AWS credentials from environment variables**
+
+Adds support to S3AFileSystem for reading AWS credentials from environment variables.
+
+
+---
+
+* [HDFS-10375](https://issues.apache.org/jira/browse/HDFS-10375) | *Trivial* | **Remove redundant TestMiniDFSCluster.testDualClusters**
+
+Remove redundent TestMiniDFSCluster.testDualClusters to save time.
+
+
+---
+
+* [HDFS-10220](https://issues.apache.org/jira/browse/HDFS-10220) | *Major* | **A large number of expired leases can make namenode unresponsive and cause failover**
+
+Two new configuration have been added "dfs.namenode.lease-recheck-interval-ms" and "dfs.namenode.max-lock-hold-to-release-lease-ms" to fine tune the duty cycle with which the Namenode recovers old leases.
+
+
+---
+
+* [HADOOP-13237](https://issues.apache.org/jira/browse/HADOOP-13237) | *Minor* | **s3a initialization against public bucket fails if caller lacks any credentials**
+
+S3A now supports read access to a public S3 bucket even if the client does not configure any AWS credentials.  See the documentation of configuration property fs.s3a.aws.credentials.provider for further details.
+
+
+---
+
+* [HADOOP-12537](https://issues.apache.org/jira/browse/HADOOP-12537) | *Minor* | **S3A to support Amazon STS temporary credentials**
+
+S3A now supports use of AWS Security Token Service temporary credentials for authentication to S3.  Refer to the documentation of configuration property fs.s3a.session.token for further details.
+
+
+---
+
+* [HADOOP-12892](https://issues.apache.org/jira/browse/HADOOP-12892) | *Blocker* | **fix/rewrite create-release**
+
+This rewrites the release process with a new dev-support/bin/create-release script.  See http://wiki.apache.org/hadoop/HowToRelease for updated instructions on how to use it.
+
+
+---
+
+* [HADOOP-3733](https://issues.apache.org/jira/browse/HADOOP-3733) | *Minor* | **"s3:" URLs break when Secret Key contains a slash, even if encoded**
+
+Allows userinfo component of URI authority to contain a slash (escaped as %2F).  Especially useful for accessing AWS S3 with distcp or hadoop fs.
+
+
+---
+
+* [HADOOP-13203](https://issues.apache.org/jira/browse/HADOOP-13203) | *Major* | **S3A: Support fadvise "random" mode for high performance readPositioned() reads**
+
+S3A has added support for configurable input policies.  Similar to fadvise, this configuration provides applications with a way to specify their expected access pattern (sequential or random) while reading a file.  S3A then performs optimizations tailored to that access pattern.  See site documentation of the fs.s3a.experimental.input.fadvise configuration property for more details.  Please be advised that this feature is experimental and subject to backward-incompatible changes in future releases.
+
+
+---
+
+* [HADOOP-13263](https://issues.apache.org/jira/browse/HADOOP-13263) | *Major* | **Reload cached groups in background after expiry**
+
+hadoop.security.groups.cache.background.reload can be set to true to enable background reload of expired groups cache entries. This setting can improve the performance of services that use Groups.java (e.g. the NameNode) when group lookups are slow. The setting is disabled by default.
+
+
+---
+
+* [HDFS-10440](https://issues.apache.org/jira/browse/HDFS-10440) | *Major* | **Improve DataNode web UI**
+
+DataNode Web UI has been improved with new HTML5 page, showing useful information.
+
+
+---
+
+* [HADOOP-13139](https://issues.apache.org/jira/browse/HADOOP-13139) | *Major* | **Branch-2: S3a to use thread pool that blocks clients**
+
+The configuration option 'fs.s3a.threads.core' is no longer supported. The string is still defined in org.apache.hadoop.fs.s3a.Constants.CORE\_THREADS, however its value is ignored. If it is set, a warning message will be printed when initializing the S3A filesystem
+
+
+---
+
+* [HADOOP-13382](https://issues.apache.org/jira/browse/HADOOP-13382) | *Major* | **remove unneeded commons-httpclient dependencies from POM files in Hadoop and sub-projects**
+
+Dependencies on commons-httpclient have been removed. Projects with undeclared transitive dependencies on commons-httpclient, previously provided via hadoop-common or hadoop-client, may find this to be an incompatible change. Such project are also potentially exposed to the commons-httpclient CVE, and should be fixed for that reason as well.
+
+
+---
+
+* [HDFS-7933](https://issues.apache.org/jira/browse/HDFS-7933) | *Major* | **fsck should also report decommissioning replicas.**
+
+The output of hdfs fsck now also contains information about decommissioning replicas.
+
+
+---
+
+* [HADOOP-13208](https://issues.apache.org/jira/browse/HADOOP-13208) | *Minor* | **S3A listFiles(recursive=true) to do a bulk listObjects instead of walking the pseudo-tree of directories**
+
+S3A has optimized the listFiles method by doing a bulk listing of all entries under a path in a single S3 operation instead of recursively walking the directory tree.  The listLocatedStatus method has been optimized by fetching results from S3 lazily as the caller traverses the returned iterator instead of doing an eager fetch of all possible results.
+
+
+---
+
+* [HADOOP-13252](https://issues.apache.org/jira/browse/HADOOP-13252) | *Minor* | **Tune S3A provider plugin mechanism**
+
+S3A now supports configuration of multiple credential provider classes for authenticating to S3.  These are loaded and queried in sequence for a valid set of credentials.  For more details, refer to the description of the fs.s3a.aws.credentials.provider configuration property or the S3A documentation page.
+
+
+---
+
+* [HDFS-8986](https://issues.apache.org/jira/browse/HDFS-8986) | *Major* | **Add option to -du to calculate directory space usage excluding snapshots**
+
+Add a -x option for "hdfs -du" and "hdfs -count" commands to exclude snapshots from being calculated.
+
+
+---
+
+* [HDFS-10760](https://issues.apache.org/jira/browse/HDFS-10760) | *Major* | **DataXceiver#run() should not log InvalidToken exception as an error**
+
+Log InvalidTokenException at trace level in DataXceiver#run().
+
+
+---
+
+* [YARN-5549](https://issues.apache.org/jira/browse/YARN-5549) | *Critical* | **AMLauncher#createAMContainerLaunchContext() should not log the command to be launched indiscriminately**
+
+Introduces a new configuration property, yarn.resourcemanager.amlauncher.log.command.  If this property is set to true, then the AM command being launched will be masked in the RM log.
+
+
+---
+
+* [HDFS-8818](https://issues.apache.org/jira/browse/HDFS-8818) | *Major* | **Allow Balancer to run faster**
+
+Add a new conf "dfs.balancer.max-size-to-move" so that Balancer.MAX\_SIZE\_TO\_MOVE becomes configurable.
+
+
+---
+
+* [HDFS-10489](https://issues.apache.org/jira/browse/HDFS-10489) | *Minor* | **Deprecate dfs.encryption.key.provider.uri for HDFS encryption zones**
+
+The configuration dfs.encryption.key.provider.uri is deprecated. To configure key provider in HDFS, please use hadoop.security.key.provider.path.
+
+
+---
+
+* [HDFS-10914](https://issues.apache.org/jira/browse/HDFS-10914) | *Critical* | **Move remnants of oah.hdfs.client to hadoop-hdfs-client**
+
+The remaining classes in the org.apache.hadoop.hdfs.client package have been moved from hadoop-hdfs to hadoop-hdfs-client.
+
+
+---
+
+* [HADOOP-12667](https://issues.apache.org/jira/browse/HADOOP-12667) | *Major* | **s3a: Support createNonRecursive API**
+
+S3A now provides a working implementation of the FileSystem#createNonRecursive method.
+
+
+---
+
+* [HDFS-10609](https://issues.apache.org/jira/browse/HDFS-10609) | *Major* | **Uncaught InvalidEncryptionKeyException during pipeline recovery may abort downstream applications**
+
+If pipeline recovery fails due to expired encryption key, attempt to refresh the key and retry.
+
+
+---
+
+* [HDFS-10797](https://issues.apache.org/jira/browse/HDFS-10797) | *Major* | **Disk usage summary of snapshots causes renamed blocks to get counted twice**
+
+Disk usage summaries previously incorrectly counted files twice if they had been renamed (including files moved to Trash) since being snapshotted. Summaries now include current data plus snapshotted data that is no longer under the directory either due to deletion or being moved outside of the directory.
+
+
+---
+
+* [HDFS-10883](https://issues.apache.org/jira/browse/HDFS-10883) | *Major* | **`getTrashRoot`'s behavior is not consistent in DFS after enabling EZ.**
+
+If root path / is an encryption zone, the old DistributedFileSystem#getTrashRoot(new Path("/")) returns
+/user/$USER/.Trash
+which is a wrong behavior. The correct value should be
+/.Trash/$USER
+
+
+---
+
+* [HADOOP-13560](https://issues.apache.org/jira/browse/HADOOP-13560) | *Major* | **S3ABlockOutputStream to support huge (many GB) file writes**
+
+This mechanism replaces the (experimental) fast output stream of Hadoop 2.7.x, combining better scalability options with instrumentation. Consult the S3A documentation to see the extra configuration operations.
+
+
+---
+
+* [HDFS-11018](https://issues.apache.org/jira/browse/HDFS-11018) | *Major* | **Incorrect check and message in FsDatasetImpl#invalidate**
+
+Improves the error message when datanode removes a replica which is not found.
+
+
+---
+
+* [YARN-5767](https://issues.apache.org/jira/browse/YARN-5767) | *Major* | **Fix the order that resources are cleaned up from the local Public/Private caches**
+
+This issue fixes a bug in how resources are evicted from the PUBLIC and PRIVATE yarn local caches used by the node manager for resource localization. In summary, the caches are now properly cleaned based on an LRU policy across both the public and private caches.
+
+
+---
+
+* [HDFS-11048](https://issues.apache.org/jira/browse/HDFS-11048) | *Major* | **Audit Log should escape control characters**
+
+HDFS audit logs are formatted as individual lines, each of which has a few of key-value pair fields. Some of the values come from client request (e.g. src, dst). Before this patch the control characters including \t \n etc are not escaped in audit logs. That may break lines unexpectedly or introduce additional table character (in the worst case, both) within a field. Tools that parse audit logs had to deal with this case carefully. After this patch, the control characters in the src/dst fields are escaped.
+
+
+---
+
+* [HADOOP-10597](https://issues.apache.org/jira/browse/HADOOP-10597) | *Major* | **RPC Server signals backoff to clients when all request queues are full**
+
+This change introduces a new configuration key used by RPC server to decide whether to send backoff signal to RPC Client when RPC call queue is full. When the feature is enabled, RPC server will no longer block on the processing of RPC requests when RPC call queue is full. It helps to improve quality of service when the service is under heavy load. The configuration key is in the format of "ipc.#port#.backoff.enable" where #port# is the port number that RPC server listens on. For example, if you want to enable the feature for the RPC server that listens on 8020, set ipc.8020.backoff.enable to true.
+
+
+---
+
+* [HDFS-11056](https://issues.apache.org/jira/browse/HDFS-11056) | *Major* | **Concurrent append and read operations lead to checksum error**
+
+Load last partial chunk checksum properly into memory when converting a finalized/temporary replica to rbw replica. This ensures concurrent reader reads the correct checksum that matches the data before the update.
+
+
+---
+
+* [HADOOP-13812](https://issues.apache.org/jira/browse/HADOOP-13812) | *Blocker* | **Upgrade Tomcat to 6.0.48**
+
+Tomcat 6.0.46 starts to filter weak ciphers. Some old SSL clients may be affected. It is recommended to upgrade the SSL client. Run the SSL client against https://www.howsmyssl.com/a/check to find out its TLS version and cipher suites.
+
+
+---
+
+* [HDFS-11217](https://issues.apache.org/jira/browse/HDFS-11217) | *Major* | **Annotate NameNode and DataNode MXBean interfaces as Private/Stable**
+
+The DataNode and NameNode MXBean interfaces have been marked as Private and Stable to indicate that although users should not be implementing these interfaces directly, the information exposed by these interfaces is part of the HDFS public API.
+
+
+---
+
+* [HDFS-11229](https://issues.apache.org/jira/browse/HDFS-11229) | *Blocker* | **HDFS-11056 failed to close meta file**
+
+The fix for HDFS-11056 reads meta file to load last partial chunk checksum when a block is converted from finalized/temporary to rbw. However, it did not close the file explicitly, which may cause number of open files reaching system limit. This jira fixes it by closing the file explicitly after the meta file is read.
+
+
+---
+
+* [HDFS-11160](https://issues.apache.org/jira/browse/HDFS-11160) | *Major* | **VolumeScanner reports write-in-progress replicas as corrupt incorrectly**
+
+Fixed a race condition that caused VolumeScanner to recognize a good replica as a bad one if the replica is also being written concurrently.
+
+
+---
+
+* [HADOOP-13956](https://issues.apache.org/jira/browse/HADOOP-13956) | *Critical* | **Read ADLS credentials from Credential Provider**
+
+The hadoop-azure-datalake file system now supports configuration of the Azure Data Lake Store account credentials using the standard Hadoop Credential Provider API. For details, please refer to the documentation on hadoop-azure-datalake and the Credential Provider API.
+
+
+---
+
+* [YARN-5271](https://issues.apache.org/jira/browse/YARN-5271) | *Major* | **ATS client doesn't work with Jersey 2 on the classpath**
+
+A workaround to avoid dependency conflict with Spark2, before a full classpath isolation solution is implemented.
+Skip instantiating a Timeline Service client if encountering NoClassDefFoundError.
+
+
+---
+
+* [HADOOP-13929](https://issues.apache.org/jira/browse/HADOOP-13929) | *Major* | **ADLS connector should not check in contract-test-options.xml**
+
+To run live unit tests, create src/test/resources/auth-keys.xml with the same properties as in the deprecated contract-test-options.xml.
+
+
+---
+
+* [YARN-6177](https://issues.apache.org/jira/browse/YARN-6177) | *Major* | **Yarn client should exit with an informative error message if an incompatible Jersey library is used at client**
+
+Let yarn client exit with an informative error message if an incompatible Jersey library is used from client side.
+
+
+---
+
+* [HDFS-11498](https://issues.apache.org/jira/browse/HDFS-11498) | *Major* | **Make RestCsrfPreventionHandler and WebHdfsHandler compatible with Netty 4.0**
+
+This JIRA sets the Netty 4 dependency to 4.0.23. This is an incompatible change for the 3.0 release line, as 3.0.0-alpha1 and 3.0.0-alpha2 depended on Netty 4.1.0.Beta5.
+
+
+---
+
+* [HADOOP-13037](https://issues.apache.org/jira/browse/HADOOP-13037) | *Major* | **Refactor Azure Data Lake Store as an independent FileSystem**
+
+Hadoop now supports integration with Azure Data Lake as an alternative Hadoop-compatible file system. Please refer to the Hadoop site documentation of Azure Data Lake for details on usage and configuration.
+
+
+---
+
+* [HDFS-11431](https://issues.apache.org/jira/browse/HDFS-11431) | *Blocker* | **hadoop-hdfs-client JAR does not include ConfiguredFailoverProxyProvider**
+
+The hadoop-client POM now includes a leaner hdfs-client, stripping out all the transitive dependencies on JARs only needed for the Hadoop HDFS daemon itself. The specific jars now excluded are: leveldbjni-all, jetty-util, commons-daemon, xercesImpl, netty and servlet-api.
+
+This should make downstream projects dependent JARs smaller, and avoid version conflict problems with the specific JARs now excluded.
+
+Applications may encounter build problems if they did depend on these JARs, and which didn't explicitly include them. There are two fixes for this
+
+\* explicitly include the JARs, stating which version of them you want.
+\* add a dependency on hadoop-hdfs. For Hadoop 2.8+, this will add the missing dependencies. For builds against older versions of Hadoop, this will be harmless, as hadoop-hdfs and all its dependencies are already pulled in by the hadoop-client POM.
+
+
+