Commit Graph

2915 Commits

Author SHA1 Message Date
Daniel Templeton 74bf9c6e4b YARN-6073. Misuse of format specifier in Preconditions.checkArgument (Contributed by Yuanbo Liu via Daniel Templeton)
(cherry picked from commit 6332a318bc)
2017-01-09 22:14:46 -08:00
Junping Du b600577095 YARN-4148. When killing app, RM releases app's resource before they are released by NM. Contributed by Jason Lowe.
(cherry picked from commit 945db55f2e)
2017-01-09 18:15:21 -08:00
Wangda Tan 447f71326b YARN-3955. Support for application priority ACLs in queues of CapacityScheduler. (Sunil G via wangda)
(cherry picked from commit 287d3d6804)
2017-01-09 08:42:38 -08:00
Varun Saxena 4fab250fc0 YARN-6068. Log aggregation get failed when NM restart even with recovery (Junping Du via Varun Saxena)
(cherry picked from commit f59e36b4ce)
2017-01-09 11:31:39 +05:30
Arun Suresh 4985217de4 YARN-6066. Opportunistic containers Minor fixes : API annotations, parameter name changes, checkstyles. (asuresh) 2017-01-08 08:27:10 -08:00
Junping Du f615c1fbbc Addendum patch to YARN-3866: fix incompatible API change. Contributed by Wangda Tan. 2017-01-07 19:58:42 -08:00
Jian He ba5d482366 YARN-6009. Skip validating app timeout value on recovery. Contributed by Rohith Sharma K S
(cherry picked from commit 020316458d)
2017-01-06 18:27:36 -08:00
Arun Suresh 81da7d1d30 YARN-5938. Refactoring OpportunisticContainerAllocator to use SchedulerRequestKey instead of Priority and other misc fixes (asuresh)
(cherry picked from commit ac1e5d4f77)
2017-01-06 11:25:49 -08:00
Arun Suresh 2b4d3e8506 YARN-5646. Add documentation and update config parameter names for scheduling of OPPORTUNISTIC containers. (Konstantinos Karanasos via asuresh)
(cherry picked from commit 2273a74c1f)
(cherry picked from commit 9e17ffe599e12c59c48f4355de645c31a4735d04)
2017-01-06 11:15:10 -08:00
Arun Suresh 3d3bb30a25 YARN-5982. Simplify opportunistic container parameters and metrics. (Konstantinos Karanasos via asuresh)
(cherry picked from commit b0aace21b1)
(cherry picked from commit 3faa0b0d682687099b253feee9b41340edef7111)
2017-01-06 11:15:09 -08:00
Arun Suresh 44774eb21c YARN-5918. Handle Opportunistic scheduling allocate request failure when NM is lost. (Bibin A Chundatt via asuresh)
(cherry picked from commit 005850b28f)
(cherry picked from commit cbff10b4147f98a89b393519b17e16385294af07)
2017-01-06 11:15:09 -08:00
Arun Suresh 368565f0ce YARN-4597. Introduce ContainerScheduler and a SCHEDULED state to NodeManager container lifecycle. (asuresh)
(cherry picked from commit 3219b7b4ac)
(cherry picked from commit 49921678858a17ca58ca2ae704ced1ff584e0859)
2017-01-06 11:15:09 -08:00
Arun Suresh 047772f15f YARN-5823. Update NMTokens in case of requests with only opportunistic containers. (Konstantinos Karanasos via asuresh)
(cherry picked from commit 283fa33feb)
(cherry picked from commit 1c4cc88a754ac9f557cdc8c859b8aadec19a5067)
2017-01-06 11:15:09 -08:00
Arun Suresh 0e60c7cd33 YARN-5377. Fix TestQueuingContainerManager.testKillMultipleOpportunisticContainers. (Konstantinos Karanasos via asuresh)
(cherry picked from commit f38a6d03a1)
(cherry picked from commit 83ccab8a653a4ef943276651c9604bd434675980)
2017-01-06 11:15:09 -08:00
Arun Suresh 7437252102 YARN-2995. Enhance UI to show cluster resource utilization of various container Execution types. (Konstantinos Karanasos via asuresh)
(cherry picked from commit 0aafc122d4)
(cherry picked from commit 25598b6e7118bacd33a167fb496e9cda5e9f9ad0)
2017-01-06 11:15:09 -08:00
Arun Suresh 28f3bb38bf YARN-5799. Fix Opportunistic Allocation to set the correct value of Node Http Address. (asuresh)
(cherry picked from commit aa3cab1eb2)
(cherry picked from commit ce10e98826884245e733431297d0275177965f17)
2017-01-06 11:15:09 -08:00
Arun Suresh f9ea753414 YARN-5486. Update OpportunisticContainerAllocatorAMService::allocate method to handle OPPORTUNISTIC container requests. (Konstantinos Karanasos via asuresh)
(cherry picked from commit 10be45986c)
(cherry picked from commit e3baa0988b4dfb592afe426ffeba3c7091b271c5)
2017-01-06 11:15:09 -08:00
Sunil G 65e7ae5dcf YARN-5906. Update AppSchedulingInfo to use SchedulingPlacementSet. Contributed by Wangda Tan. 2017-01-06 21:30:52 +05:30
Rohith Sharma K S 3207762192 YARN-5988. RM unable to start in secure setup. Contributed by Ajith S.
(cherry picked from commit e49e0a6e37)
2017-01-04 12:10:05 +05:30
Junping Du dc2e44e8f8 YARN-5923. Unable to access logs for a running application if YARN_ACL_ENABLE is enabled. Contributed by Xuan Gong.
(cherry picked from commit 8fadd69047)
2017-01-03 15:19:36 -08:00
Wangda Tan 23f6a33156 YARN-6025. Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations. (Naganarasimha G R via wangda)
(cherry picked from commit e0f2379312)
(cherry picked from commit 554e6656bc)
2017-01-03 14:52:31 -08:00
Wangda Tan cb64e8eb19 Revert "Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations. (Naganarasimha G R via wangda)" because forgot to add JIRA Number
This reverts commit 554e6656bc.
2017-01-03 14:51:59 -08:00
Wangda Tan 554e6656bc Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations. (Naganarasimha G R via wangda)
(cherry picked from commit e0f2379312)
2017-01-03 14:50:19 -08:00
Daniel Templeton 8cb7aa2b52 YARN-5931. Document timeout interfaces CLI and REST APIs (Contributed by Rohith Sharma K S via Daniel Templeton)
(cherry picked from commit 165d01a73e)
2016-12-30 08:56:03 -08:00
Robert Kanter f9b48206dd YARN-4882. Change the log level to DEBUG for recovering completed applications (templedf via rkanter)
(cherry picked from commit f216276d21)
2016-12-28 15:29:06 -08:00
Daniel Templeton 47f0a0e15b HADOOP-13932. Fix indefinite article in comments (Contributed by LiXin Ge via Daniel Templeton) 2016-12-28 07:03:51 -08:00
Sunil G b3231b480d YARN-6024. Capacity Scheduler 'continuous reservation looking' doesn't work when sum of queue's used and reserved resources is equal to max. Contributed by Wangda Tan.
(cherry picked from commit f6715b26b6)
2016-12-28 16:00:52 +05:30
Rohith Sharma K S cb40e3cffa YARN-6001. Improve moveApplicationQueues command line. Contributed by Sunil G.
(cherry picked from commit e297be74ed)
2016-12-28 12:17:38 +05:30
Wangda Tan 42f571728c YARN-5756. Add state-machine implementation for scheduler queues. (Xuan Gong via wangda)
(cherry picked from commit 0840b4329b)
2016-12-27 21:19:10 -08:00
Robert Kanter 88597991b0 YARN-5257. Fix unreleased resources and null dereferences (yufeigu via rkanter)
(cherry picked from commit 9262797e86)
2016-12-27 14:14:41 -08:00
Robert Kanter 8fbd36c60f YARN-5962. Spelling errors in logging and exceptions for resource manager code (gsohn via rkanter)
(cherry picked from commit 1bbd023275)
2016-12-27 13:35:55 -08:00
Karthik Kambatla 10a154cedd YARN-5969. FairShareComparator: Cache value of getResourceUsage for better performance. (zhangshilong via kasha)
(cherry picked from commit c3973e7080)
2016-12-27 12:30:50 -08:00
Daniel Templeton 28b605dd1a HADOOP-13940. Document the missing envvars commands (Contributed by Yiqun Lin via Daniel Templeton)
(cherry picked from commit d432173737a532b7106682116013b751ba162ff0)
2016-12-27 07:19:37 -08:00
Naganarasimha 4a9f965314 YARN-6026. A couple of spelling errors in the docs. Contributed by Grant Sohn. 2016-12-26 06:50:06 +05:30
Akira Ajisaka 522bc98026 YARN-4994. Use MiniYARNCluster with try-with-resources in tests. Contributed by Andras Bokor.
(cherry picked from commit ae401539ea)
2016-12-23 04:06:53 +09:00
Varun Saxena 3ba589cd1e YARN-5903. Fix race condition in TestResourceManagerAdministrationProtocolPBClientImpl beforeclass setup method (Haibo Chen via Varun Saxena)
(cherry picked from commit 38e66d4d64)
2016-12-22 23:11:18 +05:30
Junping Du cc42dbb703 YARN-4990. Re-direction of a particular log file within in a container in NM UI does not redirect properly. Contributed by Xuan Gong.
(cherry picked from commit 736f54b727)
2016-12-21 14:16:19 -08:00
Sunil G 238863c11b YARN-5650. Render Application Timeout value in web UI. Contributed by Akhil PB. 2016-12-20 11:03:57 +05:30
Naganarasimha e9ce2df1f2 YARN-5524. Yarn live log aggregation does not throw if command line arg is wrong. Contributed by Xuan Gong.
(cherry picked from commit 358341398a)
2016-12-20 06:45:52 +05:30
Xuan 236dbe3485 YARN-5999. AMRMClientAsync will stop if any exceptions thrown on allocate call. Contributed by Jian He 2016-12-14 15:05:42 -08:00
Sunil G 23bd68a4a4 YARN-5970. Validate application update timeout request parameters. Contributed by Rohith Sharma K S. 2016-12-12 11:59:14 +05:30
Jian He 71fdca4600 YARN-5709. Cleanup leader election configs and pluggability. Contribtued by Karthik Kambatla
(cherry picked from commit b817c565c8be1d4a682d119bfac6f43ee09e87f0)
2016-12-09 16:59:52 -08:00
Robert Kanter 9cba7c6d71 YARN-5963. Spelling errors in logging and exceptions for node manager, client, web-proxy, common, and app history code (gsohn via rkanter)
(cherry picked from commit 72fe546841)

Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/client/api/impl/TimelineClientImpl.java
2016-12-07 15:09:37 -08:00
Sunil a636a87270 YARN-5965. Retrospect ApplicationReport#getApplicationTimeouts. Contributed by Rohith Sharma K S
(cherry picked from commit ab923a53fc)
2016-12-08 00:34:45 +05:30
Daniel Templeton d8b4961515 YARN-5136. Error in handling event type APP_ATTEMPT_REMOVED to the scheduler
(Contributed by Wilfred Spiegelenburg via Daniel Templeton)
2016-12-07 11:01:09 -08:00
Rohith Sharma K S 602c998443 YARN-5932. Retrospect moveApplicationToQueue in align with YARN-5611. Contributed by Sunil G. 2016-12-07 22:45:25 +05:30
Junping Du 3350d0c080 YARN-5184. Fix up incompatible changes introduced on ContainerStatus and NodeReport. Contributed by Sangjin Lee.
(cherry picked from commit a7288da595)
2016-12-06 14:37:46 -08:00
Karthik Kambatla 8773cd5f76 HADOOP-13859. TestConfigurationFieldsBase fails for fields that are DEFAULT values of skipped properties. (Haibo Chen via kasha)
(cherry picked from commit c8d0a049b0)
2016-12-06 14:16:38 -08:00
Naganarasimha 54c5880cf7 YARN-5921. Incorrect synchronization in RMContextImpl#setHAServiceState/getHAServiceState. Contributed by Varun Saxena
(cherry picked from commit f3b8ff54ab)
2016-12-06 11:01:14 +05:30
Jian He 0f6fbfc0db YARN-5559. Analyse 2.8.0/3.0.0 jdiff reports and fix any issues. Contributed by Akira Ajisaka & Wangda Tan
(cherry picked from commit 43ebff2e35)
2016-12-05 11:40:26 -08:00
Jian He d58fca0102 YARN-5746. The state of the parentQueue and its childQueues should be synchronized. Contributed by Xuan Gong 2016-12-02 16:18:39 -08:00
Daniel Templeton 1216bad0f7 YARN-5929. Missing scheduling policy in the FS queue metric. (Contributed by Yufei Gu via Daniel Templeton)
(cherry picked from commit 9b076327eac9da244f94e226816465e7d17fda54)
2016-12-02 14:02:35 -08:00
Daniel Templeton eb301bb3ec YARN-5901. Fix race condition in TestGetGroups beforeclass setup() (Contributed by Haibo Chen via Daniel Templeton) 2016-12-02 12:05:29 -08:00
Jason Lowe 6b17d449bf YARN-5915. ATS 1.5 FileSystemTimelineWriter causes flush() to be called after every event write. Contributed by Atul Sikaria 2016-12-02 16:58:43 +00:00
Robert Kanter 99b046f8a9 MAPREDUCE-6787. Allow job_conf.xml to be downloadable on the job overview page in JHS (haibochen via rkanter)
(cherry picked from commit c87b3a448a)
2016-12-01 17:30:02 -08:00
Li Lu 8ffe86f780 YARN-5761. Separate QueueManager from Scheduler. (Xuan Gong via gtcarrera9)
(cherry picked from commit 69fb70c31a)
2016-11-30 14:02:31 -08:00
Daniel Templeton 3013b028ba YARN-5942. "Overridden" is misspelled as "overriden" in FairScheduler.md
(Contributed by Heather Sutherland via Daniel Templeton)

(cherry picked from commit 57194889fc39a36dc0697b29eafc4ac07ee42d00)
2016-11-30 11:24:44 -08:00
Daniel Templeton c22ceb0a9b YARN-5851. TestContainerManagerSecurity testContainerManager[1] failed (Contributed by Haibo Chen via Daniel Templeton)
(cherry picked from commit dd9a96cb17)
2016-11-29 14:23:42 -08:00
Daniel Templeton 803aba03f2 YARN-5890. FairScheduler should log information about AM-resource-usage and max-AM-share for queues
(Contributed by Yufei Gu via Daniel Templeton)
2016-11-29 14:14:43 -08:00
Daniel Templeton b8bebb8607 YARN-5774. MR Job stuck in ACCEPTED status without any progress in Fair Scheduler
if set yarn.scheduler.minimum-allocation-mb to 0. (Contributed by Yufei Gu via Daniel Templeton)

(cherry picked from commit 25f9872be6)
2016-11-29 10:12:10 -08:00
Sunil c28dc5e5a4 YARN-4206. Add Application timeouts in Application report and CLI. Contributed by Rohith Sharma K S.
(cherry picked from commit eb0a483ed0)
2016-11-24 18:27:50 +05:30
Sunil 7b676c5632 YARN-5649. Add REST endpoints for updating application timeouts. Contributed by Rohith Sharma K S 2016-11-24 17:37:36 +05:30
Rohith Sharma K S 6b47a7fb8e YARN-5920. Fix deadlock in TestRMHA.testTransitionedToStandbyShouldNotHang. Contributed by Varun Saxena.
(cherry picked from commit e15c20edba)
2016-11-24 12:19:19 +05:30
Rohith Sharma K S 87bb3c51d6 Reverting for fixing compilation errors in branch-2.
Revert "YARN-5649. Add REST endpoints for updating application timeouts. Contributed by Rohith Sharma K S"

This reverts commit 4379658042.
2016-11-24 09:18:07 +05:30
Jian He 4379658042 YARN-5649. Add REST endpoints for updating application timeouts. Contributed by Rohith Sharma K S 2016-11-23 16:27:12 -08:00
Rohith Sharma K S 2d068f1793 YARN-5865. Retrospect updateApplicationPriority api to handle state store exception in align with YARN-5611. Contributed by Sunil G. 2016-11-23 23:29:39 +05:30
Naganarasimha 2d94f938c5 YARN-4330. MiniYARNCluster is showing multiple Failed to instantiate default resource calculator warning messages. Contributed by Varun Saxena
(cherry picked from commit 3541ed8068)
2016-11-23 14:14:56 +05:30
Naganarasimha b96ed43897 YARN-5911. DrainDispatcher does not drain all events on stop even if setDrainEventsOnStop is true. Contributed by Varun Saxena.
(cherry picked from commit 4667564162)
2016-11-23 09:36:43 +05:30
Daniel Templeton 06f5d27bd6 YARN-5722. FairScheduler hides group resolution exceptions when assigning queue (Contributed by Wilfred Spiegelenburg via Daniel Templeton)
(cherry picked from commit 83cc7263af)
2016-11-22 11:17:39 -08:00
Jason Lowe 38024eb8f7 YARN-5859. TestResourceLocalizationService#testParallelDownloadAttemptsForPublicResource sometimes fails. Contributed by Eric Badger
(cherry picked from commit 009452bb6d)
2016-11-21 16:37:59 +00:00
Wei-Chiu Chuang c5a3ec493b YARN-5271. ATS client doesn't work with Jersey 2 on the classpath. Contributed by Weiwei Yang.
(cherry picked from commit 09520cb439)
2016-11-17 22:23:58 -06:00
Subru Krishnan e5a5a5a618 YARN-5904. Reduce the number of default server threads for AMRMProxyService.
(cherry picked from commit 140b9939da)
2016-11-17 18:27:17 -08:00
Junping Du a8ad6b6171 YARN-3538. TimelineWebService doesn't catch runtime exception. Contributed by Steve Loughran and Tsuyoshi Ozawa.
(cherry picked from commit f05a9ceb4a)
2016-11-17 16:56:21 -08:00
Rohith Sharma K S bbe993238d YARN-5870. Expose getApplications API in YarnClient with GetApplicationsRequest parameter. Contributed by Jian He.
(cherry picked from commit ce2847e794)
2016-11-17 08:54:33 +05:30
Jason Lowe 46b7d6233c YARN-5836. Malicious AM can kill containers of other apps running in any node its containers are running. Contributed by Botong Huang
(cherry picked from commit 59bfcbf357)
2016-11-16 22:25:15 +00:00
Varun Saxena 6cb1fda99d YARN-5891. yarn rmadmin -help contains a misspelled ResourceManager (Grant Sohn via Varun Saxena)
(cherry picked from commit 6a11877ab5)
2016-11-17 03:28:08 +05:30
Varun Saxena 2893316dd0 YARN-5843. Incorrect documentation for timeline service entityType/events REST end points (Bibin A Chundatt via Varun Saxena)
(cherry picked from commit c8bc7a8475)
2016-11-17 00:52:08 +05:30
Rohith Sharma K S 74ac78b3c0 YARN-5375. invoke MockRM#drainEvents implicitly in MockRM methods to reduce test failures. Contributed by sandflee.
(cherry picked from commit d65603517e)
2016-11-16 15:17:46 +05:30
Xiao Chen 3497221fcc YARN-5875. TestTokenClientRMService#testTokenRenewalWrongUser fails. Contributed by Gergely Novák.
(cherry picked from commit d5c396ccb361e1a0cf4307ce1d1b37fae0eec250)
2016-11-15 13:58:02 -08:00
Mingliang Liu 4e0fcff8ab HADOOP-13427. Eliminate needless uses of FileSystem#{exists(), isFile(), isDirectory()}. Contributed by Steve Loughran and Mingliang Liu
(cherry picked from commit 5af572b644)
2016-11-15 11:36:08 -08:00
Naganarasimha 260f3a9dc9 YARN-4355. NPE while processing localizer heartbeat. Contributed by Varun Saxena & Jonathan Hung.
(cherry picked from commit 7ffb9943b8)
2016-11-15 15:44:25 +05:30
Naganarasimha 7e9a6b653e Reverting the patch due to the issue raised in YARN-5765
Revert "YARN-5287. LinuxContainerExecutor fails to set proper permission. Contributed by Ying Zhang."

This reverts commit 93b768d0d1.
2016-11-15 11:05:03 +05:30
Rohith Sharma K S 528ef2407c YARN-5874. RM -format-state-store and -remove-application-from-state-store commands fail with NPE. Contributed by Varun Saxena.
(cherry picked from commit b7070f3308)
2016-11-15 11:03:38 +05:30
Rohith Sharma K S fad6de3080 YARN-5873. RM crashes with NPE if generic application history is enabled. Contributed by Varun Saxena.
(cherry picked from commit 296c5de0cf)
2016-11-15 11:03:27 +05:30
Karthik Kambatla ea74c7b7ae YARN-4033. In FairScheduler, parent queues should also display queue status. (Siqi Li via kasha)
(cherry picked from commit 79448d4ab1)
2016-11-13 21:39:44 -08:00
Jian He 9b0a2cb321 YARN-5825. ProportionalPreemptionalPolicy should use readLock over LeafQueue instead of synchronized block. Contributed by Sunil G
(cherry picked from commit fad9609d13)
2016-11-11 15:16:43 -08:00
Wangda Tan a76e214556 YARN-5552. Add Builder methods for common yarn API records. (Tao Jie via wangda)
(cherry picked from commit ede1a473f5)
2016-11-11 13:42:45 -08:00
Naganarasimha bde95f90e7 YARN-5545, Fix issues related to Max App in capacity scheduler. Contributed by Bibin A Chundatt 2016-11-12 00:52:35 +05:30
Eric Payne dd5b9dabf9 YARN-4218. Metric for resource*time that was preempted. Contributed by Chang Li. 2016-11-10 23:02:42 +00:00
Karthik Kambatla f4c8dc4783 YARN-5834. TestNodeStatusUpdater.testNMRMConnectionConf compares nodemanager wait time to the incorrect value. (Chang Li via kasha)
(cherry picked from commit 3a98419532)
2016-11-10 14:09:33 -08:00
Karthik Kambatla f7b25420a1 YARN-5453. FairScheduler#update may skip update demand resource of child queue/app if current demand reached maxResource. (sandflee via kasha)
(cherry picked from commit 86ac1ad9fd)
2016-11-09 23:44:26 -08:00
Varun Saxena 06c8ebdb83 YARN-5862. TestDiskFailures.testLocalDirsFailures failed (Yufei Gu via Varun Saxena)
(cherry picked from commit c202a10923)
2016-11-10 11:43:57 +05:30
Jian He a422740bd7 YARN-5611. Provide an API to update lifetime of an application. Contributed by Rohith Sharma K S 2016-11-09 16:39:46 -08:00
Naganarasimha 8a2998c08c YARN-4498. Application level node labels stats to be available in REST (addendum patch). Contributed by Bibin A Chundatt. 2016-11-10 05:21:07 +05:30
Daniel Templeton 42147bbbf7 YARN-4329. [YARN-5437] Allow fetching exact reason as to why a submitted app
is in ACCEPTED state in Fair Scheduler (Contributed by Yufei Gu)

(cherry picked from commit 59ee8b7a88)
2016-11-09 13:18:28 -08:00
Arun Suresh 4a023b4414 YARN-5833. Addendum patch to include missing changes to yarn-default.xml
(cherry picked from commit 280357c29f)
2016-11-09 07:16:39 -08:00
Andrew Wang 4f25fd975e HADOOP-13789. Hadoop Common includes generated test protos in both jar and test-jar. Contributed by Sean Busbey.
(cherry picked from commit e1c6ef2efa)
2016-11-08 16:33:58 -08:00
Subru Krishnan 797c7bfab9 YARN-5833. Add validation to ensure default ports are unique in Configuration. (Konstantinos Karanasos via Subru).
(cherry picked from commit 29e3b3417c)
2016-11-08 14:39:09 -08:00
Jason Lowe 8bb264c70d YARN-5356. NodeManager should communicate physical resource capability to ResourceManager. Contributed by Inigo Goiri
(cherry picked from commit 3f93ac0733)

Conflicts:

	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeStatusUpdaterImpl.java
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/monitor/ContainersMonitorImpl.java
2016-11-08 22:16:53 +00:00
Jian He 6cdcab9078 YARN-5716. Add global scheduler interface definition and update CapacityScheduler to use it. Contributed by Wangda Tan 2016-11-07 10:31:43 -08:00