Revert "HDFS-16384. Upgrade Netty to 4.1.72.Final (#3798 )"

This reverts commit a4557f9ed9.
2021-12-16 21:24:53 +08:00
3934 changed files with 95582 additions and 685962 deletions
--- a/.asf.yaml
+++ b/.asf.yaml
@ -14,8 +14,6 @@
 # limitations under the License.

 github:
-  ghp_path: /
-  ghp_branch: gh-pages
  enabled_merge_buttons:
    squash: true
    merge: false
@ -24,4 +22,4 @@ notifications:
  commits:      common-commits@hadoop.apache.org
  issues:       common-issues@hadoop.apache.org
  pullrequests: common-issues@hadoop.apache.org
-  jira_options: comment link label
+  jira_options: link label worklog
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@ -1,59 +0,0 @@
-# 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.
-
-
-name: website
-
-# Controls when the action will run.
-on:
-  push:
-    branches: [ trunk ]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Hadoop trunk
-        uses: actions/checkout@v3
-        with:
-          repository: apache/hadoop
-      - name: Set up JDK 8
-        uses: actions/setup-java@v3
-        with:
-          java-version: '8'
-          distribution: 'temurin'
-      - name: Cache local Maven repository
-        uses: actions/cache@v3
-        with:
-          path: ~/.m2/repository
-          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-          restore-keys: |
-            ${{ runner.os }}-maven-
-      - name: Build Hadoop maven plugins
-        run: cd hadoop-maven-plugins && mvn --batch-mode install
-      - name: Build Hadoop
-        run: mvn clean install -DskipTests -DskipShade
-      - name: Build document
-        run: mvn clean site
-      - name: Stage document
-        run: mvn site:stage -DstagingDirectory=${GITHUB_WORKSPACE}/staging/
-      - name: Deploy to GitHub Pages
-        uses: peaceiris/actions-gh-pages@v3
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./staging/hadoop-project
-          user_name: 'github-actions[bot]'
-          user_email: 'github-actions[bot]@users.noreply.github.com'
-
--- a/.yetus/excludes.txt
+++ b/.yetus/excludes.txt
@ -1,17 +0,0 @@
-# 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.
-
-dev-support/docker/Dockerfile_windows_10
--- a/BUILDING.txt
+++ b/BUILDING.txt
@ -57,7 +57,7 @@ Refer to  dev-support/docker/Dockerfile):

 * Open JDK 1.8
  $ sudo apt-get update
-  $ sudo apt-get -y install openjdk-8-jdk
+  $ sudo apt-get -y install java-8-openjdk
 * Maven
  $ sudo apt-get -y install maven
 * Native libraries
@ -492,66 +492,39 @@ Building on CentOS 8

 ----------------------------------------------------------------------------------

-Building on Windows 10
+Building on Windows

 ----------------------------------------------------------------------------------
 Requirements:

-* Windows 10
+* Windows System
 * JDK 1.8
-* Maven 3.0 or later (maven.apache.org)
-* Boost 1.72 (boost.org)
-* Protocol Buffers 3.7.1 (https://github.com/protocolbuffers/protobuf/releases)
-* CMake 3.19 or newer (cmake.org)
-* Visual Studio 2019 (visualstudio.com)
-* Windows SDK 8.1 (optional, if building CPU rate control for the container executor. Get this from
-                   http://msdn.microsoft.com/en-us/windows/bg162891.aspx)
-* Zlib (zlib.net, if building native code bindings for zlib)
-* Git (preferably, get this from https://git-scm.com/download/win since the package also contains
-       Unix command-line tools that are needed during packaging).
-* Python (python.org, for generation of docs using 'mvn site')
+* Maven 3.0 or later
+* Boost 1.72
+* Protocol Buffers 3.7.1
+* CMake 3.19 or newer
+* Visual Studio 2010 Professional or Higher
+* Windows SDK 8.1 (if building CPU rate control for the container executor)
+* zlib headers (if building native code bindings for zlib)
 * Internet connection for first build (to fetch all Maven and Hadoop dependencies)
+* Unix command-line tools from GnuWin32: sh, mkdir, rm, cp, tar, gzip. These
+  tools must be present on your PATH.
+* Python ( for generation of docs using 'mvn site')
+
+Unix command-line tools are also included with the Windows Git package which
+can be downloaded from http://git-scm.com/downloads
+
+If using Visual Studio, it must be Professional level or higher.
+Do not use Visual Studio Express.  It does not support compiling for 64-bit,
+which is problematic if running a 64-bit system.
+
+The Windows SDK 8.1 is available to download at:
+
+http://msdn.microsoft.com/en-us/windows/bg162891.aspx
+
+Cygwin is not required.

 ----------------------------------------------------------------------------------
-
-Building guidelines:
-
-Hadoop repository provides the Dockerfile for building Hadoop on Windows 10, located at
-dev-support/docker/Dockerfile_windows_10. It is highly recommended to use this and create the
-Docker image for building Hadoop on Windows 10, since you don't have to install anything else
-other than Docker and no additional steps are required in terms of aligning the environment with
-the necessary paths etc.
-
-However, if you still prefer taking the route of not using Docker, this Dockerfile_windows_10 will
-still be immensely useful as a raw guide for all the steps involved in creating the environment
-needed to build Hadoop on Windows 10.
-
-Building using the Docker:
-We first need to build the Docker image for building Hadoop on Windows 10. Run this command from
-the root of the Hadoop repository.
-> docker build -t hadoop-windows-10-builder -f .\dev-support\docker\Dockerfile_windows_10 .\dev-support\docker\
-
-Start the container with the image that we just built.
-> docker run --rm -it hadoop-windows-10-builder
-
-You can now clone the Hadoop repo inside this container and proceed with the build.
-
-NOTE:
-While one may perceive the idea of mounting the locally cloned (on the host filesystem) Hadoop
-repository into the container (using the -v option), we have seen the build to fail owing to some
-files not being able to be located by Maven. Thus, we suggest cloning the Hadoop repository to a
-non-mounted folder inside the container and proceed with the build. When the build is completed,
-you may use the "docker cp" command to copy the built Hadoop tar.gz file from the docker container
-to the host filesystem. If you still would like to mount the Hadoop codebase, a workaround would
-be to copy the mounted Hadoop codebase into another folder (which doesn't point to a mount) in the
-container's filesystem and use this for building.
-
-However, we noticed no build issues when the Maven repository from the host filesystem was mounted
-into the container. One may use this to greatly reduce the build time. Assuming that the Maven
-repository is located at D:\Maven\Repository in the host filesystem, one can use the following
-command to mount the same onto the default Maven repository location while launching the container.
-> docker run --rm -v D:\Maven\Repository:C:\Users\ContainerAdministrator\.m2\repository -it hadoop-windows-10-builder
-
 Building:

 Keep the source code tree in a short path to avoid running into problems related
@ -567,24 +540,6 @@ configure the bit-ness of the build, and set several optional components.
 Several tests require that the user must have the Create Symbolic Links
 privilege.

-To simplify the installation of Boost, Protocol buffers, OpenSSL and Zlib dependencies we can use
-vcpkg (https://github.com/Microsoft/vcpkg.git). Upon cloning the vcpkg repo, checkout the commit
-7ffa425e1db8b0c3edf9c50f2f3a0f25a324541d to get the required versions of the dependencies
-mentioned above.
-> git clone https://github.com/Microsoft/vcpkg.git
-> cd vcpkg
-> git checkout 7ffa425e1db8b0c3edf9c50f2f3a0f25a324541d
-> .\bootstrap-vcpkg.bat
-> .\vcpkg.exe install boost:x64-windows
-> .\vcpkg.exe install protobuf:x64-windows
-> .\vcpkg.exe install openssl:x64-windows
-> .\vcpkg.exe install zlib:x64-windows
-
-Set the following environment variables -
-(Assuming that vcpkg was checked out at C:\vcpkg)
-> set PROTOBUF_HOME=C:\vcpkg\installed\x64-windows
-> set MAVEN_OPTS=-Xmx2048M -Xss128M
-
 All Maven goals are the same as described above with the exception that
 native code is built by enabling the 'native-win' Maven profile. -Pnative-win
 is enabled by default when building on Windows since the native components
@ -602,24 +557,6 @@ the zlib 1.2.7 source tree.

 http://www.zlib.net/

-
-Build command:
-The following command builds all the modules in the Hadoop project and generates the tar.gz file in
-hadoop-dist/target upon successful build. Run these commands from an
-"x64 Native Tools Command Prompt for VS 2019" which can be found under "Visual Studio 2019" in the
-Windows start menu. If you're using the Docker image from Dockerfile_windows_10, you'll be
-logged into "x64 Native Tools Command Prompt for VS 2019" automatically when you start the
-container.
-
-> set classpath=
-> set PROTOBUF_HOME=C:\vcpkg\installed\x64-windows
-> mvn clean package -Dhttps.protocols=TLSv1.2 -DskipTests -DskipDocs -Pnative-win,dist^
-    -Drequire.openssl -Drequire.test.libhadoop -Pyarn-ui -Dshell-executable=C:\Git\bin\bash.exe^
-    -Dtar -Dopenssl.prefix=C:\vcpkg\installed\x64-windows^
-    -Dcmake.prefix.path=C:\vcpkg\installed\x64-windows^
-    -Dwindows.cmake.toolchain.file=C:\vcpkg\scripts\buildsystems\vcpkg.cmake -Dwindows.cmake.build.type=RelWithDebInfo^
-    -Dwindows.build.hdfspp.dll=off -Dwindows.no.sasl=on -Duse.platformToolsetVersion=v142
-
 ----------------------------------------------------------------------------------
 Building distributions:

--- a/195
+++ b/195
@ -210,28 +210,28 @@ hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/nvd3-1.8.5.* (css and js
 hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/checker/AbstractFuture.java
 hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/checker/TimeoutFuture.java

-com.aliyun:aliyun-java-sdk-core:4.5.10
-com.aliyun:aliyun-java-sdk-kms:2.11.0
-com.aliyun:aliyun-java-sdk-ram:3.1.0
+com.aliyun:aliyun-java-sdk-core:3.4.0
+com.aliyun:aliyun-java-sdk-ecs:4.2.0
+com.aliyun:aliyun-java-sdk-ram:3.0.0
 com.aliyun:aliyun-java-sdk-sts:3.0.0
-com.aliyun.oss:aliyun-sdk-oss:3.13.2
-com.amazonaws:aws-java-sdk-bundle:1.12.316
+com.aliyun.oss:aliyun-sdk-oss:3.13.0
+com.amazonaws:aws-java-sdk-bundle:1.11.901
 com.cedarsoftware:java-util:1.9.0
 com.cedarsoftware:json-io:2.5.1
-com.fasterxml.jackson.core:jackson-annotations:2.12.7
-com.fasterxml.jackson.core:jackson-core:2.12.7
-com.fasterxml.jackson.core:jackson-databind:2.12.7.1
-com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:2.12.7
-com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:2.12.7
-com.fasterxml.jackson.module:jackson-module-jaxb-annotations:2.12.7
+com.fasterxml.jackson.core:jackson-annotations:2.13.0
+com.fasterxml.jackson.core:jackson-core:2.13.0
+com.fasterxml.jackson.core:jackson-databind:2.13.0
+com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:2.13.0
+com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:2.13.0
+com.fasterxml.jackson.module:jackson-module-jaxb-annotations:2.13.0
 com.fasterxml.uuid:java-uuid-generator:3.1.4
-com.fasterxml.woodstox:woodstox-core:5.4.0
+com.fasterxml.woodstox:woodstox-core:5.3.0
 com.github.davidmoten:rxjava-extras:0.8.0.17
 com.github.stephenc.jcip:jcip-annotations:1.0-1
 com.google:guice:4.0
 com.google:guice-servlet:4.0
 com.google.api.grpc:proto-google-common-protos:1.0.0
-com.google.code.gson:2.9.0
+com.google.code.gson:2.2.4
 com.google.errorprone:error_prone_annotations:2.2.0
 com.google.j2objc:j2objc-annotations:1.1
 com.google.json-simple:json-simple:1.1.1
@ -240,17 +240,18 @@ com.google.guava:guava:20.0
 com.google.guava:guava:27.0-jre
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
 com.microsoft.azure:azure-storage:7.0.0
-com.nimbusds:nimbus-jose-jwt:9.31
-com.squareup.okhttp3:okhttp:4.10.0
-com.squareup.okio:okio:3.2.0
+com.nimbusds:nimbus-jose-jwt:9.8.1
+com.squareup.okhttp:okhttp:2.7.5
+com.squareup.okio:okio:1.6.0
 com.zaxxer:HikariCP:4.0.3
-commons-beanutils:commons-beanutils:1.9.4
-commons-cli:commons-cli:1.5.0
+commons-beanutils:commons-beanutils:1.9.3
+commons-cli:commons-cli:1.2
 commons-codec:commons-codec:1.11
 commons-collections:commons-collections:3.2.2
 commons-daemon:commons-daemon:1.0.13
 commons-io:commons-io:2.8.0
-commons-net:commons-net:3.9.0
+commons-logging:commons-logging:1.1.3
+commons-net:commons-net:3.6
 de.ruedigermoeller:fst:2.50
 io.grpc:grpc-api:1.26.0
 io.grpc:grpc-context:1.26.0
@ -259,36 +260,18 @@ io.grpc:grpc-netty:1.26.0
 io.grpc:grpc-protobuf:1.26.0
 io.grpc:grpc-protobuf-lite:1.26.0
 io.grpc:grpc-stub:1.26.0
-io.netty:netty-all:4.1.77.Final
-io.netty:netty-buffer:4.1.77.Final
-io.netty:netty-codec:4.1.77.Final
-io.netty:netty-codec-dns:4.1.77.Final
-io.netty:netty-codec-haproxy:4.1.77.Final
-io.netty:netty-codec-http:4.1.77.Final
-io.netty:netty-codec-http2:4.1.77.Final
-io.netty:netty-codec-memcache:4.1.77.Final
-io.netty:netty-codec-mqtt:4.1.77.Final
-io.netty:netty-codec-redis:4.1.77.Final
-io.netty:netty-codec-smtp:4.1.77.Final
-io.netty:netty-codec-socks:4.1.77.Final
-io.netty:netty-codec-stomp:4.1.77.Final
-io.netty:netty-codec-xml:4.1.77.Final
-io.netty:netty-common:4.1.77.Final
-io.netty:netty-handler:4.1.77.Final
-io.netty:netty-handler-proxy:4.1.77.Final
-io.netty:netty-resolver:4.1.77.Final
-io.netty:netty-resolver-dns:4.1.77.Final
-io.netty:netty-transport:4.1.77.Final
-io.netty:netty-transport-rxtx:4.1.77.Final
-io.netty:netty-transport-sctp:4.1.77.Final
-io.netty:netty-transport-udt:4.1.77.Final
-io.netty:netty-transport-classes-epoll:4.1.77.Final
-io.netty:netty-transport-native-unix-common:4.1.77.Final
-io.netty:netty-transport-classes-kqueue:4.1.77.Final
-io.netty:netty-resolver-dns-classes-macos:4.1.77.Final
-io.netty:netty-transport-native-epoll:4.1.77.Final
-io.netty:netty-transport-native-kqueue:4.1.77.Final
-io.netty:netty-resolver-dns-native-macos:4.1.77.Final
+io.netty:netty:3.10.6.Final
+io.netty:netty-all:4.1.42.Final
+io.netty:netty-buffer:4.1.27.Final
+io.netty:netty-codec:4.1.27.Final
+io.netty:netty-codec-http:4.1.27.Final
+io.netty:netty-codec-http2:4.1.27.Final
+io.netty:netty-codec-socks:4.1.27.Final
+io.netty:netty-common:4.1.27.Final
+io.netty:netty-handler:4.1.27.Final
+io.netty:netty-handler-proxy:4.1.27.Final
+io.netty:netty-resolver:4.1.27.Final
+io.netty:netty-transport:4.1.27.Final
 io.opencensus:opencensus-api:0.12.3
 io.opencensus:opencensus-contrib-grpc-metrics:0.12.3
 io.reactivex:rxjava:1.3.8
@ -299,15 +282,16 @@ javax.inject:javax.inject:1
 log4j:log4j:1.2.17
 net.java.dev.jna:jna:5.2.0
 net.minidev:accessors-smart:1.2
-org.apache.avro:avro:1.9.2
+net.minidev:json-smart:2.4.7
+org.apache.avro:avro:1.7.7
 org.apache.commons:commons-collections4:4.2
 org.apache.commons:commons-compress:1.21
-org.apache.commons:commons-configuration2:2.8.0
-org.apache.commons:commons-csv:1.9.0
+org.apache.commons:commons-configuration2:2.1.1
+org.apache.commons:commons-csv:1.0
 org.apache.commons:commons-digester:1.8.1
 org.apache.commons:commons-lang3:3.12.0
-org.apache.commons:commons-math3:3.6.1
-org.apache.commons:commons-text:1.10.0
+org.apache.commons:commons-math3:3.1.1
+org.apache.commons:commons-text:1.4
 org.apache.commons:commons-validator:1.6
 org.apache.curator:curator-client:5.2.0
 org.apache.curator:curator-framework:5.2.0
@ -321,49 +305,49 @@ org.apache.htrace:htrace-core:3.1.0-incubating
 org.apache.htrace:htrace-core4:4.1.0-incubating
 org.apache.httpcomponents:httpclient:4.5.6
 org.apache.httpcomponents:httpcore:4.4.10
-org.apache.kafka:kafka-clients:2.8.2
-org.apache.kerby:kerb-admin:2.0.3
-org.apache.kerby:kerb-client:2.0.3
-org.apache.kerby:kerb-common:2.0.3
-org.apache.kerby:kerb-core:2.0.3
-org.apache.kerby:kerb-crypto:2.0.3
-org.apache.kerby:kerb-identity:2.0.3
-org.apache.kerby:kerb-server:2.0.3
-org.apache.kerby:kerb-simplekdc:2.0.3
-org.apache.kerby:kerb-util:2.0.3
-org.apache.kerby:kerby-asn1:2.0.3
-org.apache.kerby:kerby-config:2.0.3
-org.apache.kerby:kerby-pkix:2.0.3
-org.apache.kerby:kerby-util:2.0.3
-org.apache.kerby:kerby-xdr:2.0.3
-org.apache.kerby:token-provider:2.0.3
-org.apache.solr:solr-solrj:8.8.2
+org.apache.kafka:kafka-clients:2.8.1
+org.apache.kerby:kerb-admin:1.0.1
+org.apache.kerby:kerb-client:1.0.1
+org.apache.kerby:kerb-common:1.0.1
+org.apache.kerby:kerb-core:1.0.1
+org.apache.kerby:kerb-crypto:1.0.1
+org.apache.kerby:kerb-identity:1.0.1
+org.apache.kerby:kerb-server:1.0.1
+org.apache.kerby:kerb-simplekdc:1.0.1
+org.apache.kerby:kerb-util:1.0.1
+org.apache.kerby:kerby-asn1:1.0.1
+org.apache.kerby:kerby-config:1.0.1
+org.apache.kerby:kerby-pkix:1.0.1
+org.apache.kerby:kerby-util:1.0.1
+org.apache.kerby:kerby-xdr:1.0.1
+org.apache.kerby:token-provider:1.0.1
 org.apache.yetus:audience-annotations:0.5.0
 org.apache.zookeeper:zookeeper:3.6.3
-org.codehaus.jettison:jettison:1.5.4
-org.eclipse.jetty:jetty-annotations:9.4.51.v20230217
-org.eclipse.jetty:jetty-http:9.4.51.v20230217
-org.eclipse.jetty:jetty-io:9.4.51.v20230217
-org.eclipse.jetty:jetty-jndi:9.4.51.v20230217
-org.eclipse.jetty:jetty-plus:9.4.51.v20230217
-org.eclipse.jetty:jetty-security:9.4.51.v20230217
-org.eclipse.jetty:jetty-server:9.4.51.v20230217
-org.eclipse.jetty:jetty-servlet:9.4.51.v20230217
-org.eclipse.jetty:jetty-util:9.4.51.v20230217
-org.eclipse.jetty:jetty-util-ajax:9.4.51.v20230217
-org.eclipse.jetty:jetty-webapp:9.4.51.v20230217
-org.eclipse.jetty:jetty-xml:9.4.51.v20230217
-org.eclipse.jetty.websocket:javax-websocket-client-impl:9.4.51.v20230217
-org.eclipse.jetty.websocket:javax-websocket-server-impl:9.4.51.v20230217
+org.codehaus.jackson:jackson-core-asl:1.9.13
+org.codehaus.jackson:jackson-jaxrs:1.9.13
+org.codehaus.jackson:jackson-mapper-asl:1.9.13
+org.codehaus.jackson:jackson-xc:1.9.13
+org.codehaus.jettison:jettison:1.1
+org.eclipse.jetty:jetty-annotations:9.4.44.v20210927
+org.eclipse.jetty:jetty-http:9.4.44.v20210927
+org.eclipse.jetty:jetty-io:9.4.44.v20210927
+org.eclipse.jetty:jetty-jndi:9.4.44.v20210927
+org.eclipse.jetty:jetty-plus:9.4.44.v20210927
+org.eclipse.jetty:jetty-security:9.4.44.v20210927
+org.eclipse.jetty:jetty-server:9.4.44.v20210927
+org.eclipse.jetty:jetty-servlet:9.4.44.v20210927
+org.eclipse.jetty:jetty-util:9.4.44.v20210927
+org.eclipse.jetty:jetty-util-ajax:9.4.44.v20210927
+org.eclipse.jetty:jetty-webapp:9.4.44.v20210927
+org.eclipse.jetty:jetty-xml:9.4.44.v20210927
+org.eclipse.jetty.websocket:javax-websocket-client-impl:9.4.44.v20210927
+org.eclipse.jetty.websocket:javax-websocket-server-impl:9.4.44.v20210927
 org.ehcache:ehcache:3.3.1
-org.ini4j:ini4j:0.5.4
-org.jetbrains.kotlin:kotlin-stdlib:1.4.10
-org.jetbrains.kotlin:kotlin-stdlib-common:1.4.10
 org.lz4:lz4-java:1.7.1
 org.objenesis:objenesis:2.6
 org.xerial.snappy:snappy-java:1.0.5
-org.yaml:snakeyaml:2.0
-org.wildfly.openssl:wildfly-openssl:1.1.3.Final
+org.yaml:snakeyaml:1.16:
+org.wildfly.openssl:wildfly-openssl:1.0.7.Final


 --------------------------------------------------------------------------------
@ -420,14 +404,14 @@ hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dataTables.bootstrap.css
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dataTables.bootstrap.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dust-full-2.0.0.min.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dust-helpers-1.1.1.min.js
-hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/jquery-3.6.0.min.js
+hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/jquery-3.5.1.min.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/jquery.dataTables.min.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/moment.min.js
 hadoop-tools/hadoop-sls/src/main/html/js/thirdparty/bootstrap.min.js
 hadoop-tools/hadoop-sls/src/main/html/js/thirdparty/jquery.js
 hadoop-tools/hadoop-sls/src/main/html/css/bootstrap.min.css
 hadoop-tools/hadoop-sls/src/main/html/css/bootstrap-responsive.min.css
-hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/dt-1.11.5/*
+hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/dt-1.10.18/*
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/jquery
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/jt/jquery.jstree.js
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/resources/TERMINAL
@ -435,7 +419,7 @@ hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanage
 bootstrap v3.3.6
 broccoli-asset-rev v2.4.2
 broccoli-funnel v1.0.1
-datatables v1.11.5
+datatables v1.10.8
 em-helpers v0.5.13
 em-table v0.1.6
 ember v2.2.0
@ -483,8 +467,8 @@ com.microsoft.azure:azure-cosmosdb-gateway:2.4.5
 com.microsoft.azure:azure-data-lake-store-sdk:2.3.3
 com.microsoft.azure:azure-keyvault-core:1.0.0
 com.microsoft.sqlserver:mssql-jdbc:6.2.1.jre7
-org.bouncycastle:bcpkix-jdk15on:1.68
-org.bouncycastle:bcprov-jdk15on:1.68
+org.bouncycastle:bcpkix-jdk15on:1.60
+org.bouncycastle:bcprov-jdk15on:1.60
 org.checkerframework:checker-qual:2.5.2
 org.codehaus.mojo:animal-sniffer-annotations:1.17
 org.jruby.jcodings:jcodings:1.0.13
@ -499,17 +483,18 @@ org.slf4j:slf4j-log4j12:1.7.25
 CDDL 1.1 + GPLv2 with classpath exception
 -----------------------------------------

-com.github.pjfanning:jersey-json:1.20
-com.sun.jersey:jersey-client:1.19.4
-com.sun.jersey:jersey-core:1.19.4
-com.sun.jersey:jersey-guice:1.19.4
-com.sun.jersey:jersey-server:1.19.4
-com.sun.jersey:jersey-servlet:1.19.4
+com.sun.jersey:jersey-client:1.19
+com.sun.jersey:jersey-core:1.19
+com.sun.jersey:jersey-guice:1.19
+com.sun.jersey:jersey-json:1.19
+com.sun.jersey:jersey-server:1.19
+com.sun.jersey:jersey-servlet:1.19
 com.sun.xml.bind:jaxb-impl:2.2.3-1
 javax.annotation:javax.annotation-api:1.3.2
 javax.servlet:javax.servlet-api:3.1.0
 javax.servlet.jsp:jsp-api:2.1
 javax.websocket:javax.websocket-api:1.0
+javax.ws.rs:javax.ws.rs-api:2.1.1
 javax.ws.rs:jsr311-api:1.1.1
 javax.xml.bind:jaxb-api:2.2.11

@ -518,20 +503,18 @@ Eclipse Public License 1.0
 --------------------------

 junit:junit:4.13.2
-org.jacoco:org.jacoco.agent:0.8.5
-


 HSQL License
 ------------

-org.hsqldb:hsqldb:2.7.1
+org.hsqldb:hsqldb:2.3.4


 JDOM License
 ------------

-org.jdom:jdom2:2.0.6.1
+org.jdom:jdom:1.1


 Public Domain
--- a/LICENSE.txt
+++ b/LICENSE.txt
@ -245,14 +245,14 @@ hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dataTables.bootstrap.css
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dataTables.bootstrap.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dust-full-2.0.0.min.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dust-helpers-1.1.1.min.js
-hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/jquery-3.6.0.min.js
+hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/jquery-3.5.1.min.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/jquery.dataTables.min.js
 hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/moment.min.js
 hadoop-tools/hadoop-sls/src/main/html/js/thirdparty/bootstrap.min.js
 hadoop-tools/hadoop-sls/src/main/html/js/thirdparty/jquery.js
 hadoop-tools/hadoop-sls/src/main/html/css/bootstrap.min.css
 hadoop-tools/hadoop-sls/src/main/html/css/bootstrap-responsive.min.css
-hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/dt-1.11.5/*
+hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/dt-1.10.18/*
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/jquery
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/webapps/static/jt/jquery.jstree.js
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/resources/TERMINAL
--- a/2
+++ b/2
@ -66,7 +66,7 @@ available from http://www.digip.org/jansson/.


 AWS SDK for Java
-Copyright 2010-2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+Copyright 2010-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.

 This product includes software developed by
 Amazon Technologies, Inc (http://www.amazon.com/).
--- a/dev-support/Jenkinsfile
+++ b/dev-support/Jenkinsfile
@ -47,7 +47,7 @@ pipeline {

    options {
        buildDiscarder(logRotator(numToKeepStr: '5'))
-        timeout (time: 48, unit: 'HOURS')
+        timeout (time: 24, unit: 'HOURS')
        timestamps()
        checkoutToSubdirectory('src')
    }
@ -55,7 +55,7 @@ pipeline {
    environment {
        YETUS='yetus'
        // Branch or tag name.  Yetus release tags are 'rel/X.Y.Z'
-        YETUS_VERSION='rel/0.14.0'
+        YETUS_VERSION='f9ba0170a5787a5f4662d3769804fef0226a182f'
    }

    parameters {
--- a/dev-support/bin/create-release
+++ b/dev-support/bin/create-release
@ -293,7 +293,6 @@ function usage
  echo "--security              Emergency security release"
  echo "--sign                  Use .gnupg dir to sign the artifacts and jars"
  echo "--version=[version]     Use an alternative version string"
-  echo "--mvnargs=[args]        Extra Maven args to be provided when running mvn commands"
 }

 function option_parse
@ -348,9 +347,6 @@ function option_parse
      --version=*)
        HADOOP_VERSION=${i#*=}
      ;;
-      --mvnargs=*)
-        MVNEXTRAARGS=${i#*=}
-      ;;
    esac
  done

@ -417,9 +413,6 @@ function option_parse
      MVN_ARGS=("-Dmaven.repo.local=${MVNCACHE}")
    fi
  fi
-  if [ -n "$MVNEXTRAARGS" ]; then
-    MVN_ARGS+=("$MVNEXTRAARGS")
-  fi

  if [[ "${SECURITYRELEASE}" = true ]]; then
    if [[ ! -d "${BASEDIR}/hadoop-common-project/hadoop-common/src/site/markdown/release/${HADOOP_VERSION}" ]]; then
@ -542,10 +535,6 @@ function makearelease

  big_console_header "Cleaning the Source Tree"

-  # Since CVE-2022-24765 in April 2022, git refuses to work in directories
-  # whose owner != the current user, unless explicitly told to trust it.
-  git config --global --add safe.directory /build/source
-
  # git clean to clear any remnants from previous build
  run "${GIT}" clean -xdf -e /patchprocess

--- a/dev-support/bin/hadoop.sh
+++ b/dev-support/bin/hadoop.sh
@ -20,20 +20,6 @@
 # Override these to match Apache Hadoop's requirements
 personality_plugins "all,-ant,-gradle,-scalac,-scaladoc"

-# These flags are needed to run Yetus against Hadoop on Windows.
-WINDOWS_FLAGS="-Pnative-win
-  -Dhttps.protocols=TLSv1.2
-  -Drequire.openssl
-  -Drequire.test.libhadoop
-  -Dshell-executable=${BASH_EXECUTABLE}
-  -Dopenssl.prefix=${VCPKG_INSTALLED_PACKAGES}
-  -Dcmake.prefix.path=${VCPKG_INSTALLED_PACKAGES}
-  -Dwindows.cmake.toolchain.file=${CMAKE_TOOLCHAIN_FILE}
-  -Dwindows.cmake.build.type=RelWithDebInfo
-  -Dwindows.build.hdfspp.dll=off
-  -Dwindows.no.sasl=on
-  -Duse.platformToolsetVersion=v142"
-
 ## @description  Globals specific to this personality
 ## @audience     private
 ## @stability    evolving
@ -101,30 +87,17 @@ function hadoop_order
  echo "${hadoopm}"
 }

-## @description  Retrieves the Hadoop project version defined in the root pom.xml
-## @audience     private
-## @stability    evolving
-## @returns      0 on success, 1 on failure
-function load_hadoop_version
-{
-  if [[ -f "${BASEDIR}/pom.xml" ]]; then
-      HADOOP_VERSION=$(grep '<version>' "${BASEDIR}/pom.xml" \
-          | head -1 \
-          | "${SED}"  -e 's|^ *<version>||' -e 's|</version>.*$||' \
-          | cut -f1 -d- )
-      return 0
-    else
-      return 1
-    fi
-}
-
 ## @description  Determine if it is safe to run parallel tests
 ## @audience     private
 ## @stability    evolving
 ## @param        ordering
 function hadoop_test_parallel
 {
-  if load_hadoop_version; then
+  if [[ -f "${BASEDIR}/pom.xml" ]]; then
+    HADOOP_VERSION=$(grep '<version>' "${BASEDIR}/pom.xml" \
+        | head -1 \
+        | "${SED}"  -e 's|^ *<version>||' -e 's|</version>.*$||' \
+        | cut -f1 -d- )
    export HADOOP_VERSION
  else
    return 1
@ -289,10 +262,7 @@ function hadoop_native_flags
    Windows_NT|CYGWIN*|MINGW*|MSYS*)
      echo \
        "${args[@]}" \
-        -Drequire.snappy \
-        -Pdist \
-        -Dtar \
-        "${WINDOWS_FLAGS}"
+        -Drequire.snappy -Drequire.openssl -Pnative-win
    ;;
    *)
      echo \
@ -435,10 +405,7 @@ function personality_modules
    extra="${extra} ${flags}"
  fi

-  if [[ "$IS_WINDOWS" && "$IS_WINDOWS" == 1 ]]; then
-    extra="-Ptest-patch -Pdist -Dtar ${WINDOWS_FLAGS} ${extra}"
-  fi
-
+  extra="-Ptest-patch ${extra}"
  for module in $(hadoop_order ${ordering}); do
    # shellcheck disable=SC2086
    personality_enqueue_module ${module} ${extra}
@ -581,28 +548,17 @@ function shadedclient_rebuild

  big_console_header "Checking client artifacts on ${repostatus} with shaded clients"

-  extra="-Dtest=NoUnitTests -Dmaven.javadoc.skip=true -Dcheckstyle.skip=true -Dspotbugs.skip=true"
-
-  if [[ "$IS_WINDOWS" && "$IS_WINDOWS" == 1 ]]; then
-    if load_hadoop_version; then
-      export HADOOP_HOME="${SOURCEDIR}/hadoop-dist/target/hadoop-${HADOOP_VERSION}-SNAPSHOT"
-    else
-      yetus_error "[WARNING] Unable to extract the Hadoop version and thus HADOOP_HOME is not set. Some tests may fail."
-    fi
-
-    extra="${WINDOWS_FLAGS} ${extra}"
-  fi
-
  echo_and_redirect "${logfile}" \
-    "${MAVEN}" "${MAVEN_ARGS[@]}" verify -fae --batch-mode -am "${modules[@]}" "${extra}"
+    "${MAVEN}" "${MAVEN_ARGS[@]}" verify -fae --batch-mode -am \
+      "${modules[@]}" \
+      -Dtest=NoUnitTests -Dmaven.javadoc.skip=true -Dcheckstyle.skip=true -Dspotbugs.skip=true

  big_console_header "Checking client artifacts on ${repostatus} with non-shaded clients"

  echo_and_redirect "${logfile}" \
    "${MAVEN}" "${MAVEN_ARGS[@]}" verify -fae --batch-mode -am \
      "${modules[@]}" \
-      -DskipShade -Dtest=NoUnitTests -Dmaven.javadoc.skip=true -Dcheckstyle.skip=true \
-      -Dspotbugs.skip=true "${extra}"
+      -DskipShade -Dtest=NoUnitTests -Dmaven.javadoc.skip=true -Dcheckstyle.skip=true -Dspotbugs.skip=true

  count=$("${GREP}" -c '\[ERROR\]' "${logfile}")
  if [[ ${count} -gt 0 ]]; then
--- a/dev-support/bin/yetus-wrapper
+++ b/dev-support/bin/yetus-wrapper
@ -77,7 +77,7 @@ WANTED="$1"
 shift
 ARGV=("$@")

-HADOOP_YETUS_VERSION=${HADOOP_YETUS_VERSION:-0.14.0}
+HADOOP_YETUS_VERSION=${HADOOP_YETUS_VERSION:-0.13.0}
 BIN=$(yetus_abs "${BASH_SOURCE-$0}")
 BINDIR=$(dirname "${BIN}")

@ -171,17 +171,7 @@ if [[ -n "${GPGBIN}" && ! "${HADOOP_SKIP_YETUS_VERIFICATION}" = true ]]; then
   fi
 fi

-if [[ "$IS_WINDOWS" && "$IS_WINDOWS" == 1 ]]; then
-  gunzip -c "${TARBALL}.gz" | tar xpf -
-
-  # One of the entries in the Yetus tarball unzips a symlink qbt.sh.
-  # The symlink creation fails on Windows, unless this CI is run as Admin or Developer mode is
-  # enabled.
-  # Thus, we create the qbt.sh symlink ourselves and move it to the target.
-  YETUS_PRECOMMIT_DIR="${YETUS_PREFIX}-${HADOOP_YETUS_VERSION}/lib/precommit"
-  ln -s "${YETUS_PRECOMMIT_DIR}/test-patch.sh" qbt.sh
-  mv qbt.sh "${YETUS_PRECOMMIT_DIR}"
-elif ! (gunzip -c "${TARBALL}.gz" | tar xpf -); then
+if ! (gunzip -c "${TARBALL}.gz" | tar xpf -); then
  yetus_error "ERROR: ${TARBALL}.gz is corrupt. Investigate and then remove ${HADOOP_PATCHPROCESS} to try again."
  exit 1
 fi
--- a/dev-support/docker/Dockerfile_aarch64
+++ b/dev-support/docker/Dockerfile_aarch64
@ -74,7 +74,7 @@ ENV PATH "${PATH}:/opt/protobuf/bin"
 ###
 # Avoid out of memory errors in builds
 ###
-ENV MAVEN_OPTS -Xms256m -Xmx3072m
+ENV MAVEN_OPTS -Xms256m -Xmx1536m

 # Skip gpg verification when downloading Yetus via yetus-wrapper
 ENV HADOOP_SKIP_YETUS_VERIFICATION true
--- a/dev-support/docker/Dockerfile_centos_8
+++ b/dev-support/docker/Dockerfile_centos_8
@ -30,13 +30,6 @@ COPY pkg-resolver pkg-resolver
 RUN chmod a+x pkg-resolver/*.sh pkg-resolver/*.py \
    && chmod a+r pkg-resolver/*.json

-######
-# Centos 8 has reached its EOL and the packages
-# are no longer available on mirror.centos.org site.
-# Please see https://www.centos.org/centos-linux-eol/
-######
-RUN pkg-resolver/set-vault-as-baseurl-centos.sh centos:8
-
 ######
 # Install packages from yum
 ######
--- a/dev-support/docker/Dockerfile_debian_10
+++ b/dev-support/docker/Dockerfile_debian_10
@ -82,7 +82,6 @@ ENV HADOOP_SKIP_YETUS_VERIFICATION true
 ####
 # Install packages
 ####
-RUN pkg-resolver/install-cmake.sh debian:10
 RUN pkg-resolver/install-spotbugs.sh debian:10
 RUN pkg-resolver/install-boost.sh debian:10
 RUN pkg-resolver/install-protobuf.sh debian:10
--- a/dev-support/docker/Dockerfile_windows_10
+++ b/dev-support/docker/Dockerfile_windows_10
@ -1,124 +0,0 @@
-# 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.
-
-# Dockerfile for installing the necessary dependencies for building Hadoop.
-# See BUILDING.txt.
-
-FROM mcr.microsoft.com/windows:ltsc2019
-
-# Need to disable the progress bar for speeding up the downloads.
-# hadolint ignore=SC2086
-RUN powershell $Global:ProgressPreference = 'SilentlyContinue'
-
-# Restore the default Windows shell for correct batch processing.
-SHELL ["cmd", "/S", "/C"]
-
-# Install Visual Studio 2019 Build Tools.
-RUN curl -SL --output vs_buildtools.exe https://aka.ms/vs/16/release/vs_buildtools.exe \
-    && (start /w vs_buildtools.exe --quiet --wait --norestart --nocache \
-    --installPath "%ProgramFiles(x86)%\Microsoft Visual Studio\2019\BuildTools" \
-    --add Microsoft.VisualStudio.Workload.VCTools \
-    --add Microsoft.VisualStudio.Component.VC.ASAN \
-    --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 \
-    --add Microsoft.VisualStudio.Component.Windows10SDK.19041 \
-    || IF "%ERRORLEVEL%"=="3010" EXIT 0) \
-    && del /q vs_buildtools.exe
-
-# Install Chocolatey.
-RUN powershell -NoProfile -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))"
-RUN setx PATH "%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"
-
-# Install git.
-RUN choco install git.install -y
-RUN powershell Copy-Item -Recurse -Path 'C:\Program Files\Git' -Destination C:\Git
-
-# Install vcpkg.
-# hadolint ignore=DL3003
-RUN powershell git clone https://github.com/microsoft/vcpkg.git \
-    && cd vcpkg \
-    && git checkout 7ffa425e1db8b0c3edf9c50f2f3a0f25a324541d \
-    && .\bootstrap-vcpkg.bat
-RUN powershell .\vcpkg\vcpkg.exe install boost:x64-windows
-RUN powershell .\vcpkg\vcpkg.exe install protobuf:x64-windows
-RUN powershell .\vcpkg\vcpkg.exe install openssl:x64-windows
-RUN powershell .\vcpkg\vcpkg.exe install zlib:x64-windows
-ENV PROTOBUF_HOME "C:\vcpkg\installed\x64-windows"
-
-# Install Azul Java 8 JDK.
-RUN powershell Invoke-WebRequest -URI https://cdn.azul.com/zulu/bin/zulu8.62.0.19-ca-jdk8.0.332-win_x64.zip -OutFile $Env:TEMP\zulu8.62.0.19-ca-jdk8.0.332-win_x64.zip
-RUN powershell Expand-Archive -Path $Env:TEMP\zulu8.62.0.19-ca-jdk8.0.332-win_x64.zip -DestinationPath "C:\Java"
-ENV JAVA_HOME "C:\Java\zulu8.62.0.19-ca-jdk8.0.332-win_x64"
-RUN setx PATH "%PATH%;%JAVA_HOME%\bin"
-
-# Install Apache Maven.
-RUN powershell Invoke-WebRequest -URI https://archive.apache.org/dist/maven/maven-3/3.8.6/binaries/apache-maven-3.8.6-bin.zip -OutFile $Env:TEMP\apache-maven-3.8.6-bin.zip
-RUN powershell Expand-Archive -Path $Env:TEMP\apache-maven-3.8.6-bin.zip -DestinationPath "C:\Maven"
-RUN setx PATH "%PATH%;C:\Maven\apache-maven-3.8.6\bin"
-ENV MAVEN_OPTS '-Xmx2048M -Xss128M'
-
-# Install CMake 3.19.0.
-RUN powershell Invoke-WebRequest -URI https://cmake.org/files/v3.19/cmake-3.19.0-win64-x64.zip -OutFile $Env:TEMP\cmake-3.19.0-win64-x64.zip
-RUN powershell Expand-Archive -Path $Env:TEMP\cmake-3.19.0-win64-x64.zip -DestinationPath "C:\CMake"
-RUN setx PATH "%PATH%;C:\CMake\cmake-3.19.0-win64-x64\bin"
-
-# Install zstd 1.5.4.
-RUN powershell Invoke-WebRequest -Uri https://github.com/facebook/zstd/releases/download/v1.5.4/zstd-v1.5.4-win64.zip -OutFile $Env:TEMP\zstd-v1.5.4-win64.zip
-RUN powershell Expand-Archive -Path $Env:TEMP\zstd-v1.5.4-win64.zip -DestinationPath "C:\ZStd"
-RUN setx PATH "%PATH%;C:\ZStd"
-
-# Install libopenssl 3.1.0 needed for rsync 3.2.7.
-RUN powershell Invoke-WebRequest -Uri https://repo.msys2.org/msys/x86_64/libopenssl-3.1.0-1-x86_64.pkg.tar.zst -OutFile $Env:TEMP\libopenssl-3.1.0-1-x86_64.pkg.tar.zst
-RUN powershell zstd -d $Env:TEMP\libopenssl-3.1.0-1-x86_64.pkg.tar.zst -o $Env:TEMP\libopenssl-3.1.0-1-x86_64.pkg.tar
-RUN powershell mkdir "C:\LibOpenSSL"
-RUN powershell tar -xvf $Env:TEMP\libopenssl-3.1.0-1-x86_64.pkg.tar -C "C:\LibOpenSSL"
-
-# Install libxxhash 0.8.1 needed for rsync 3.2.7.
-RUN powershell Invoke-WebRequest -Uri https://repo.msys2.org/msys/x86_64/libxxhash-0.8.1-1-x86_64.pkg.tar.zst -OutFile $Env:TEMP\libxxhash-0.8.1-1-x86_64.pkg.tar.zst
-RUN powershell zstd -d $Env:TEMP\libxxhash-0.8.1-1-x86_64.pkg.tar.zst -o $Env:TEMP\libxxhash-0.8.1-1-x86_64.pkg.tar
-RUN powershell mkdir "C:\LibXXHash"
-RUN powershell tar -xvf $Env:TEMP\libxxhash-0.8.1-1-x86_64.pkg.tar -C "C:\LibXXHash"
-
-# Install libzstd 1.5.4 needed for rsync 3.2.7.
-RUN powershell Invoke-WebRequest -Uri https://repo.msys2.org/msys/x86_64/libzstd-1.5.4-1-x86_64.pkg.tar.zst -OutFile $Env:TEMP\libzstd-1.5.4-1-x86_64.pkg.tar.zst
-RUN powershell zstd -d $Env:TEMP\libzstd-1.5.4-1-x86_64.pkg.tar.zst -o $Env:TEMP\libzstd-1.5.4-1-x86_64.pkg.tar
-RUN powershell mkdir "C:\LibZStd"
-RUN powershell tar -xvf $Env:TEMP\libzstd-1.5.4-1-x86_64.pkg.tar -C "C:\LibZStd"
-
-# Install rsync 3.2.7.
-RUN powershell Invoke-WebRequest -Uri https://repo.msys2.org/msys/x86_64/rsync-3.2.7-2-x86_64.pkg.tar.zst -OutFile $Env:TEMP\rsync-3.2.7-2-x86_64.pkg.tar.zst
-RUN powershell zstd -d $Env:TEMP\rsync-3.2.7-2-x86_64.pkg.tar.zst -o $Env:TEMP\rsync-3.2.7-2-x86_64.pkg.tar
-RUN powershell mkdir "C:\RSync"
-RUN powershell tar -xvf $Env:TEMP\rsync-3.2.7-2-x86_64.pkg.tar -C "C:\RSync"
-# Copy the dependencies of rsync 3.2.7.
-RUN powershell Copy-Item -Path "C:\LibOpenSSL\usr\bin\*.dll" -Destination "C:\Program` Files\Git\usr\bin"
-RUN powershell Copy-Item -Path "C:\LibXXHash\usr\bin\*.dll" -Destination "C:\Program` Files\Git\usr\bin"
-RUN powershell Copy-Item -Path "C:\LibZStd\usr\bin\*.dll" -Destination "C:\Program` Files\Git\usr\bin"
-RUN powershell Copy-Item -Path "C:\RSync\usr\bin\*" -Destination "C:\Program` Files\Git\usr\bin"
-
-# Install Python 3.10.11.
-RUN powershell Invoke-WebRequest -Uri https://www.python.org/ftp/python/3.10.11/python-3.10.11-embed-amd64.zip -OutFile $Env:TEMP\python-3.10.11-embed-amd64.zip
-RUN powershell Expand-Archive -Path $Env:TEMP\python-3.10.11-embed-amd64.zip -DestinationPath "C:\Python3"
-RUN powershell New-Item -ItemType HardLink -Value "C:\Python3\python.exe" -Path "C:\Python3\python3.exe"
-RUN setx path "%PATH%;C:\Python3"
-
-# We get strange Javadoc errors without this.
-RUN setx classpath ""
-
-RUN git config --global core.longpaths true
-RUN setx PATH "%PATH%;C:\Program Files\Git\usr\bin"
-
-# Define the entry point for the docker container.
-ENTRYPOINT ["C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Auxiliary\\Build\\vcvars64.bat", "&&", "cmd.exe"]
--- a/dev-support/docker/pkg-resolver/install-maven.sh
+++ b/dev-support/docker/pkg-resolver/install-maven.sh
@ -40,7 +40,7 @@ fi

 if [ "$version_to_install" == "3.6.3" ]; then
  mkdir -p /opt/maven /tmp/maven &&
-    curl -L -s -S https://dlcdn.apache.org/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz \
+    curl -L -s -S https://mirrors.estointernet.in/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz \
      -o /tmp/maven/apache-maven-3.6.3-bin.tar.gz &&
    tar xzf /tmp/maven/apache-maven-3.6.3-bin.tar.gz --strip-components 1 -C /opt/maven
 else
--- a/dev-support/docker/pkg-resolver/packages.json
+++ b/dev-support/docker/pkg-resolver/packages.json
@ -62,6 +62,7 @@
    "centos:8": "clang"
  },
  "cmake": {
+    "debian:10": "cmake",
    "ubuntu:focal": "cmake",
    "ubuntu:focal::arch64": "cmake"
  },
--- a/dev-support/docker/pkg-resolver/set-vault-as-baseurl-centos.sh
+++ b/dev-support/docker/pkg-resolver/set-vault-as-baseurl-centos.sh
@ -1,33 +0,0 @@
-#!/usr/bin/env bash
-
-# 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.
-
-if [ $# -lt 1 ]; then
-  echo "ERROR: Need at least 1 argument, $# were provided"
-  exit 1
-fi
-
-if [ "$1" == "centos:7" ] || [ "$1" == "centos:8" ]; then
-  cd /etc/yum.repos.d/ || exit &&
-    sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* &&
-    sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-* &&
-    yum update -y &&
-    cd /root || exit
-else
-  echo "ERROR: Setting the archived baseurl is only supported for centos 7 and 8 environments"
-  exit 1
-fi
--- a/dev-support/git-jira-validation/README.md
+++ b/dev-support/git-jira-validation/README.md
@ -1,134 +0,0 @@
-<!--
-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 Git/Jira FixVersion validation
-============================================================
-
-Git commits in Apache Hadoop contains Jira number of the format
-HADOOP-XXXX or HDFS-XXXX or YARN-XXXX or MAPREDUCE-XXXX.
-While creating a release candidate, we also include changelist
-and this changelist can be identified based on Fixed/Closed Jiras
-with the correct fix versions. However, sometimes we face few
-inconsistencies between fixed Jira and Git commit message.
-
-git_jira_fix_version_check.py script takes care of
-identifying all git commits with commit
-messages with any of these issues:
-
-1. commit is reverted as per commit message
-2. commit does not contain Jira number format in message
-3. Jira does not have expected fixVersion
-4. Jira has expected fixVersion, but it is not yet resolved
-
-Moreover, this script also finds any resolved Jira with expected
-fixVersion but without any corresponding commit present.
-
-This should be useful as part of RC preparation.
-
-git_jira_fix_version_check supports python3 and it required
-installation of jira:
-
-```
-$ python3 --version
-Python 3.9.7
-
-$ python3 -m venv ./venv
-
-$ ./venv/bin/pip install -r dev-support/git-jira-validation/requirements.txt
-
-$ ./venv/bin/python dev-support/git-jira-validation/git_jira_fix_version_check.py
-
-```
-
-The script also requires below inputs:
-```
-1. First commit hash to start excluding commits from history:
-   Usually we can provide latest commit hash from last tagged release
-   so that the script will only loop through all commits in git commit
-   history before this commit hash. e.g for 3.3.2 release, we can provide
-   git hash: fa4915fdbbbec434ab41786cb17b82938a613f16
-   because this commit bumps up hadoop pom versions to 3.3.2:
-   https://github.com/apache/hadoop/commit/fa4915fdbbbec434ab41786cb17b82938a613f16
-
-2. Fix Version:
-   Exact fixVersion that we would like to compare all Jira's fixVersions
-   with. e.g for 3.3.2 release, it should be 3.3.2.
-
-3. JIRA Project Name:
-   The exact name of Project as case-sensitive e.g HADOOP / OZONE
-
-4. Path of project's working dir with release branch checked-in:
-   Path of project from where we want to compare git hashes from. Local fork
-   of the project should be up-to date with upstream and expected release
-   branch should be checked-in.
-
-5. Jira server url (default url: https://issues.apache.org/jira):
-   Default value of server points to ASF Jiras but this script can be
-   used outside of ASF Jira too.
-```
-
-
-Example of script execution:
-```
-JIRA Project Name (e.g HADOOP / OZONE etc): HADOOP
-First commit hash to start excluding commits from history: fa4915fdbbbec434ab41786cb17b82938a613f16
-Fix Version: 3.3.2
-Jira server url (default: https://issues.apache.org/jira):
-Path of project's working dir with release branch checked-in: /Users/vjasani/Documents/src/hadoop-3.3/hadoop
-
-Check git status output and verify expected branch
-
-On branch branch-3.3.2
-Your branch is up to date with 'origin/branch-3.3.2'.
-
-nothing to commit, working tree clean
-
-
-Jira/Git commit message diff starting: ##############################################
-Jira not present with version: 3.3.2. 	 Commit: 8cd8e435fb43a251467ca74fadcb14f21a3e8163 HADOOP-17198. Support S3 Access Points  (#3260) (branch-3.3.2) (#3955)
-WARN: Jira not found. 			 Commit: 8af28b7cca5c6020de94e739e5373afc69f399e5 Updated the index as per 3.3.2 release
-WARN: Jira not found. 			 Commit: e42e483d0085aa46543ebcb1196dd155ddb447d0 Make upstream aware of 3.3.1 release
-Commit seems reverted. 			 Commit: 6db1165380cd308fb74c9d17a35c1e57174d1e09 Revert "HDFS-14099. Unknown frame descriptor when decompressing multiple frames (#3836)"
-Commit seems reverted. 			 Commit: 1e3f94fa3c3d4a951d4f7438bc13e6f008f228f4 Revert "HDFS-16333. fix balancer bug when transfer an EC block (#3679)"
-Jira not present with version: 3.3.2. 	 Commit: ce0bc7b473a62a580c1227a4de6b10b64b045d3a HDFS-16344. Improve DirectoryScanner.Stats#toString (#3695)
-Jira not present with version: 3.3.2. 	 Commit: 30f0629d6e6f735c9f4808022f1a1827c5531f75 HDFS-16339. Show the threshold when mover threads quota is exceeded (#3689)
-Jira not present with version: 3.3.2. 	 Commit: e449daccf486219e3050254d667b74f92e8fc476 YARN-11007. Correct words in YARN documents (#3680)
-Commit seems reverted. 			 Commit: 5c189797828e60a3329fd920ecfb99bcbccfd82d Revert "HDFS-16336. Addendum: De-flake TestRollingUpgrade#testRollback (#3686)"
-Jira not present with version: 3.3.2. 	 Commit: 544dffd179ed756bc163e4899e899a05b93d9234 HDFS-16171. De-flake testDecommissionStatus (#3280)
-Jira not present with version: 3.3.2. 	 Commit: c6914b1cb6e4cab8263cd3ae5cc00bc7a8de25de HDFS-16350. Datanode start time should be set after RPC server starts successfully (#3711)
-Jira not present with version: 3.3.2. 	 Commit: 328d3b84dfda9399021ccd1e3b7afd707e98912d HDFS-16336. Addendum: De-flake TestRollingUpgrade#testRollback (#3686)
-Jira not present with version: 3.3.2. 	 Commit: 3ae8d4ccb911c9ababd871824a2fafbb0272c016 HDFS-16336. De-flake TestRollingUpgrade#testRollback (#3686)
-Jira not present with version: 3.3.2. 	 Commit: 15d3448e25c797b7d0d401afdec54683055d4bb5 HADOOP-17975. Fallback to simple auth does not work for a secondary DistributedFileSystem instance. (#3579)
-Jira not present with version: 3.3.2. 	 Commit: dd50261219de71eaa0a1ad28529953e12dfb92e0 YARN-10991. Fix to ignore the grouping "[]" for resourcesStr in parseResourcesString method (#3592)
-Jira not present with version: 3.3.2. 	 Commit: ef462b21bf03b10361d2f9ea7b47d0f7360e517f HDFS-16332. Handle invalid token exception in sasl handshake (#3677)
-WARN: Jira not found. 			 Commit: b55edde7071419410ea5bea4ce6462b980e48f5b Also update hadoop.version to 3.3.2
-...
-...
-...
-Found first commit hash after which git history is redundant. commit: fa4915fdbbbec434ab41786cb17b82938a613f16
-Exiting successfully
-Jira/Git commit message diff completed: ##############################################
-
-Any resolved Jira with fixVersion 3.3.2 but corresponding commit not present
-Starting diff: ##############################################
-HADOOP-18066 is marked resolved with fixVersion 3.3.2 but no corresponding commit found
-HADOOP-17936 is marked resolved with fixVersion 3.3.2 but no corresponding commit found
-Completed diff: ##############################################
-
-
-```
-
--- a/dev-support/git-jira-validation/git_jira_fix_version_check.py
+++ b/dev-support/git-jira-validation/git_jira_fix_version_check.py
@ -1,117 +0,0 @@
-#!/usr/bin/env python3
-############################################################################
-#
-# 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.
-#
-############################################################################
-"""An application to assist Release Managers with ensuring that histories in
-Git and fixVersions in JIRA are in agreement. See README.md for a detailed
-explanation.
-"""
-
-
-import os
-import re
-import subprocess
-
-from jira import JIRA
-
-jira_project_name = input("JIRA Project Name (e.g HADOOP / OZONE etc): ") \
-                    or "HADOOP"
-# Define project_jira_keys with - appended. e.g for HADOOP Jiras,
-# project_jira_keys should include HADOOP-, HDFS-, YARN-, MAPREDUCE-
-project_jira_keys = [jira_project_name + '-']
-if jira_project_name == 'HADOOP':
-    project_jira_keys.append('HDFS-')
-    project_jira_keys.append('YARN-')
-    project_jira_keys.append('MAPREDUCE-')
-
-first_exclude_commit_hash = input("First commit hash to start excluding commits from history: ")
-fix_version = input("Fix Version: ")
-
-jira_server_url = input(
-    "Jira server url (default: https://issues.apache.org/jira): ") \
-        or "https://issues.apache.org/jira"
-
-jira = JIRA(server=jira_server_url)
-
-local_project_dir = input("Path of project's working dir with release branch checked-in: ")
-os.chdir(local_project_dir)
-
-GIT_STATUS_MSG = subprocess.check_output(['git', 'status']).decode("utf-8")
-print('\nCheck git status output and verify expected branch\n')
-print(GIT_STATUS_MSG)
-
-print('\nJira/Git commit message diff starting: ##############################################')
-
-issue_set_from_commit_msg = set()
-
-for commit in subprocess.check_output(['git', 'log', '--pretty=oneline']).decode(
-        "utf-8").splitlines():
-    if commit.startswith(first_exclude_commit_hash):
-        print("Found first commit hash after which git history is redundant. commit: "
-              + first_exclude_commit_hash)
-        print("Exiting successfully")
-        break
-    if re.search('revert', commit, re.IGNORECASE):
-        print("Commit seems reverted. \t\t\t Commit: " + commit)
-        continue
-    ACTUAL_PROJECT_JIRA = None
-    matches = re.findall('|'.join(project_jira_keys), commit)
-    if matches:
-        ACTUAL_PROJECT_JIRA = matches[0]
-    if not ACTUAL_PROJECT_JIRA:
-        print("WARN: Jira not found. \t\t\t Commit: " + commit)
-        continue
-    JIRA_NUM = ''
-    for c in commit.split(ACTUAL_PROJECT_JIRA)[1]:
-        if c.isdigit():
-            JIRA_NUM = JIRA_NUM + c
-        else:
-            break
-    issue = jira.issue(ACTUAL_PROJECT_JIRA + JIRA_NUM)
-    EXPECTED_FIX_VERSION = False
-    for version in issue.fields.fixVersions:
-        if version.name == fix_version:
-            EXPECTED_FIX_VERSION = True
-            break
-    if not EXPECTED_FIX_VERSION:
-        print("Jira not present with version: " + fix_version + ". \t Commit: " + commit)
-        continue
-    if issue.fields.status is None or issue.fields.status.name not in ('Resolved', 'Closed'):
-        print("Jira is not resolved yet? \t\t Commit: " + commit)
-    else:
-        # This means Jira corresponding to current commit message is resolved with expected
-        # fixVersion.
-        # This is no-op by default, if needed, convert to print statement.
-        issue_set_from_commit_msg.add(ACTUAL_PROJECT_JIRA + JIRA_NUM)
-
-print('Jira/Git commit message diff completed: ##############################################')
-
-print('\nAny resolved Jira with fixVersion ' + fix_version
-      + ' but corresponding commit not present')
-print('Starting diff: ##############################################')
-all_issues_with_fix_version = jira.search_issues(
-    'project=' + jira_project_name + ' and status in (Resolved,Closed) and fixVersion='
-    + fix_version)
-
-for issue in all_issues_with_fix_version:
-    if issue.key not in issue_set_from_commit_msg:
-        print(issue.key + ' is marked resolved with fixVersion ' + fix_version
-            + ' but no corresponding commit found')
-
-print('Completed diff: ##############################################')
--- a/dev-support/git-jira-validation/requirements.txt
+++ b/dev-support/git-jira-validation/requirements.txt
@ -1,18 +0,0 @@
-#
-# 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.
-#
-jira==3.1.1
--- a/dev-support/hadoop-vote.sh
+++ b/dev-support/hadoop-vote.sh
@ -1,204 +0,0 @@
-#!/usr/bin/env bash
-# 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.
-
-# This script is useful to perform basic sanity tests for the given
-# Hadoop RC. It checks for the Checksum, Signature, Rat check,
-# Build from source and building tarball from the source.
-
-set -e -o pipefail
-
-usage() {
-  SCRIPT=$(basename "${BASH_SOURCE[@]}")
-
-  cat << __EOF
-hadoop-vote. A script for standard vote which verifies the following items
-1. Checksum of sources and binaries
-2. Signature of sources and binaries
-3. Rat check
-4. Built from source
-5. Built tar from source
-
-Usage: ${SCRIPT} -s | --source <url> [-k | --key <signature>] [-f | --keys-file-url <url>] [-o | --output-dir </path/to/use>] [-D property[=value]] [-P profiles]
-       ${SCRIPT} -h | --help
-
-  -h | --help                   Show this screen.
-  -s | --source '<url>'         A URL pointing to the release candidate sources and binaries
-                                e.g. https://dist.apache.org/repos/dist/dev/hadoop/hadoop-<version>RC0/
-  -k | --key '<signature>'      A signature of the public key, e.g. 9AD2AE49
-  -f | --keys-file-url '<url>'   the URL of the key file, default is
-                                https://downloads.apache.org/hadoop/common/KEYS
-  -o | --output-dir '</path>'   directory which has the stdout and stderr of each verification target
-  -D |                          list of maven properties to set for the mvn invocations, e.g. <-D hbase.profile=2.0 -D skipTests> Defaults to unset
-  -P |                          list of maven profiles to set for the build from source, e.g. <-P native -P yarn-ui>
-__EOF
-}
-
-MVN_PROPERTIES=()
-MVN_PROFILES=()
-
-while ((${#})); do
-  case "${1}" in
-    -h | --help )
-      usage; exit 0 ;;
-    -s | --source )
-      SOURCE_URL="${2}"; shift 2 ;;
-    -k | --key )
-      SIGNING_KEY="${2}"; shift 2 ;;
-    -f | --keys-file-url )
-      KEY_FILE_URL="${2}"; shift 2 ;;
-    -o | --output-dir )
-      OUTPUT_DIR="${2}"; shift 2 ;;
-    -D )
-      MVN_PROPERTIES+=("-D ${2}"); shift 2 ;;
-    -P )
-      MVN_PROFILES+=("-P ${2}"); shift 2 ;;
-    * )
-      usage >&2; exit 1             ;;
-  esac
-done
-
-# Source url must be provided
-if [ -z "${SOURCE_URL}" ]; then
-  usage;
-  exit 1
-fi
-
-cat << __EOF
-Although This tool helps verifying Hadoop RC build and unit tests,
-operator may still consider verifying the following manually:
-1. Verify the API compatibility report
-2. Integration/performance/benchmark tests
-3. Object store specific Integration tests against an endpoint
-4. Verify overall unit test stability from Jenkins builds or locally
-5. Other concerns if any
-__EOF
-
-[[ "${SOURCE_URL}" != */ ]] && SOURCE_URL="${SOURCE_URL}/"
-HADOOP_RC_VERSION=$(tr "/" "\n" <<< "${SOURCE_URL}" | tail -n2)
-HADOOP_VERSION=$(echo "${HADOOP_RC_VERSION}" | sed -e 's/-RC[0-9]//g' | sed -e 's/hadoop-//g')
-JAVA_VERSION=$(java -version 2>&1 | cut -f3 -d' ' | head -n1 | sed -e 's/"//g')
-OUTPUT_DIR="${OUTPUT_DIR:-$(pwd)}"
-
-if [ ! -d "${OUTPUT_DIR}" ]; then
-    echo "Output directory ${OUTPUT_DIR} does not exist, please create it before running this script."
-    exit 1
-fi
-
-OUTPUT_PATH_PREFIX="${OUTPUT_DIR}"/"${HADOOP_RC_VERSION}"
-
-# default value for verification targets, 0 = failed
-SIGNATURE_PASSED=0
-CHECKSUM_PASSED=0
-RAT_CHECK_PASSED=0
-BUILD_FROM_SOURCE_PASSED=0
-BUILD_TAR_FROM_SOURCE_PASSED=0
-
-function download_and_import_keys() {
-    KEY_FILE_URL="${KEY_FILE_URL:-https://downloads.apache.org/hadoop/common/KEYS}"
-    echo "Obtain and import the publisher key(s) from ${KEY_FILE_URL}"
-    # download the keys file into file KEYS
-    wget -O KEYS "${KEY_FILE_URL}"
-    gpg --import KEYS
-    if [ -n "${SIGNING_KEY}" ]; then
-        gpg --list-keys "${SIGNING_KEY}"
-    fi
-}
-
-function download_release_candidate () {
-    # get all files from release candidate repo
-    wget -r -np -N -nH --cut-dirs 4 "${SOURCE_URL}"
-}
-
-function verify_signatures() {
-    rm -f "${OUTPUT_PATH_PREFIX}"_verify_signatures
-    for file in *.tar.gz; do
-        gpg --verify "${file}".asc "${file}" 2>&1 | tee -a "${OUTPUT_PATH_PREFIX}"_verify_signatures && SIGNATURE_PASSED=1 || SIGNATURE_PASSED=0
-    done
-}
-
-function verify_checksums() {
-    rm -f "${OUTPUT_PATH_PREFIX}"_verify_checksums
-    SHA_EXT=$(find . -name "*.sha*" | awk -F '.' '{ print $NF }' | head -n 1)
-    for file in *.tar.gz; do
-        sha512sum --tag "${file}" > "${file}"."${SHA_EXT}".tmp
-        diff "${file}"."${SHA_EXT}".tmp "${file}"."${SHA_EXT}" 2>&1 | tee -a "${OUTPUT_PATH_PREFIX}"_verify_checksums && CHECKSUM_PASSED=1 || CHECKSUM_PASSED=0
-        rm -f "${file}"."${SHA_EXT}".tmp
-    done
-}
-
-function unzip_from_source() {
-    tar -zxvf hadoop-"${HADOOP_VERSION}"-src.tar.gz
-    cd hadoop-"${HADOOP_VERSION}"-src
-}
-
-function rat_test() {
-    rm -f "${OUTPUT_PATH_PREFIX}"_rat_test
-    mvn clean apache-rat:check "${MVN_PROPERTIES[@]}" 2>&1 | tee "${OUTPUT_PATH_PREFIX}"_rat_test && RAT_CHECK_PASSED=1
-}
-
-function build_from_source() {
-    rm -f "${OUTPUT_PATH_PREFIX}"_build_from_source
-    # No unit test run.
-    mvn clean install "${MVN_PROPERTIES[@]}" -DskipTests "${MVN_PROFILES[@]}" 2>&1 | tee "${OUTPUT_PATH_PREFIX}"_build_from_source && BUILD_FROM_SOURCE_PASSED=1
-}
-
-function build_tar_from_source() {
-    rm -f "${OUTPUT_PATH_PREFIX}"_build_tar_from_source
-    # No unit test run.
-    mvn clean package "${MVN_PROPERTIES[@]}" -Pdist -DskipTests -Dtar -Dmaven.javadoc.skip=true 2>&1 | tee "${OUTPUT_PATH_PREFIX}"_build_tar_from_source && BUILD_TAR_FROM_SOURCE_PASSED=1
-}
-
-function execute() {
-   ${1} || print_when_exit
-}
-
-function print_when_exit() {
-  cat << __EOF
-        * Signature: $( ((SIGNATURE_PASSED)) && echo "ok" || echo "failed" )
-        * Checksum : $( ((CHECKSUM_PASSED)) && echo "ok" || echo "failed" )
-        * Rat check (${JAVA_VERSION}): $( ((RAT_CHECK_PASSED)) && echo "ok" || echo "failed" )
-         - mvn clean apache-rat:check ${MVN_PROPERTIES[@]}
-        * Built from source (${JAVA_VERSION}): $( ((BUILD_FROM_SOURCE_PASSED)) && echo "ok" || echo "failed" )
-         - mvn clean install ${MVN_PROPERTIES[@]} -DskipTests ${MVN_PROFILES[@]}
-        * Built tar from source (${JAVA_VERSION}): $( ((BUILD_TAR_FROM_SOURCE_PASSED)) && echo "ok" || echo "failed" )
-         - mvn clean package ${MVN_PROPERTIES[@]} -Pdist -DskipTests -Dtar -Dmaven.javadoc.skip=true
-__EOF
-  if ((CHECKSUM_PASSED)) && ((SIGNATURE_PASSED)) && ((RAT_CHECK_PASSED)) && ((BUILD_FROM_SOURCE_PASSED)) && ((BUILD_TAR_FROM_SOURCE_PASSED)) ; then
-    exit 0
-  fi
-  exit 1
-}
-
-pushd "${OUTPUT_DIR}"
-
-download_and_import_keys
-download_release_candidate
-
-pushd "${HADOOP_RC_VERSION}"
-
-execute verify_signatures
-execute verify_checksums
-execute unzip_from_source
-execute rat_test
-execute build_from_source
-execute build_tar_from_source
-
-popd
-popd
-
-print_when_exit
--- a/dev-support/jenkins.sh
+++ b/dev-support/jenkins.sh
@ -48,7 +48,7 @@ is_platform_change() {
  declare in_path
  in_path="${SOURCEDIR}"/"${1}"

-  for path in "${DOCKERFILE}" "${SOURCEDIR}"/dev-support/docker/pkg-resolver/*.json; do
+  for path in "${SOURCEDIR}"/dev-support/docker/Dockerfile* "${SOURCEDIR}"/dev-support/docker/pkg-resolver/*.json; do
    if [ "${in_path}" == "${path}" ]; then
      echo "Found C/C++ platform related changes in ${in_path}"
      return 0
@ -114,26 +114,6 @@ function check_ci_run() {
 function run_ci() {
  TESTPATCHBIN="${WORKSPACE}/${YETUS}/precommit/src/main/shell/test-patch.sh"

-  if [[ "$IS_WINDOWS" && "$IS_WINDOWS" == 1 ]]; then
-    echo "Building in a Windows environment, skipping some Yetus related settings"
-  else
-    # run in docker mode and specifically point to our
-    # Dockerfile since we don't want to use the auto-pulled version.
-    YETUS_ARGS+=("--docker")
-    YETUS_ARGS+=("--dockerfile=${DOCKERFILE}")
-    YETUS_ARGS+=("--mvn-custom-repos")
-    YETUS_ARGS+=("--dockermemlimit=22g")
-
-    # test with Java 8 and 11
-    YETUS_ARGS+=("--java-home=/usr/lib/jvm/java-8-openjdk-amd64")
-    YETUS_ARGS+=("--multijdkdirs=/usr/lib/jvm/java-11-openjdk-amd64")
-    YETUS_ARGS+=("--multijdktests=compile")
-  fi
-
-  if [[ "$IS_NIGHTLY_BUILD" && "$IS_NIGHTLY_BUILD" == 1 ]]; then
-    YETUS_ARGS+=("--empty-patch")
-    YETUS_ARGS+=("--branch=${BRANCH_NAME}")
-  else
  # this must be clean for every run
  if [[ -d "${PATCHDIR}" ]]; then
    rm -rf "${PATCHDIR:?}"
@ -152,11 +132,6 @@ function run_ci() {
    exit 0
  fi

-    # write Yetus report as GitHub comment (YETUS-1102)
-    YETUS_ARGS+=("--github-write-comment")
-    YETUS_ARGS+=("--github-use-emoji-vote")
-  fi
-
  YETUS_ARGS+=("--patch-dir=${PATCHDIR}")

  # where the source is located
@ -181,6 +156,7 @@ function run_ci() {
  # changing these to higher values may cause problems
  # with other jobs on systemd-enabled machines
  YETUS_ARGS+=("--proclimit=5500")
+  YETUS_ARGS+=("--dockermemlimit=22g")

  # -1 spotbugs issues that show up prior to the patch being applied
  YETUS_ARGS+=("--spotbugs-strict-precheck")
@ -199,15 +175,30 @@ function run_ci() {
  # much attention to them
  YETUS_ARGS+=("--tests-filter=checkstyle")

+  # run in docker mode and specifically point to our
+  # Dockerfile since we don't want to use the auto-pulled version.
+  YETUS_ARGS+=("--docker")
+  YETUS_ARGS+=("--dockerfile=${DOCKERFILE}")
+  YETUS_ARGS+=("--mvn-custom-repos")
+
  # effectively treat dev-suport as a custom maven module
  YETUS_ARGS+=("--skip-dirs=dev-support")

  # help keep the ASF boxes clean
  YETUS_ARGS+=("--sentinel")

+  # test with Java 8 and 11
+  YETUS_ARGS+=("--java-home=/usr/lib/jvm/java-8-openjdk-amd64")
+  YETUS_ARGS+=("--multijdkdirs=/usr/lib/jvm/java-11-openjdk-amd64")
+  YETUS_ARGS+=("--multijdktests=compile")
+
  # custom javadoc goals
  YETUS_ARGS+=("--mvn-javadoc-goals=process-sources,javadoc:javadoc-no-fork")

+  # write Yetus report as GitHub comment (YETUS-1102)
+  YETUS_ARGS+=("--github-write-comment")
+  YETUS_ARGS+=("--github-use-emoji-vote")
+
  "${TESTPATCHBIN}" "${YETUS_ARGS[@]}"
 }

--- a/hadoop-client-modules/hadoop-client-api/pom.xml
+++ b/hadoop-client-modules/hadoop-client-api/pom.xml
@ -98,6 +98,13 @@
              <createSourcesJar>true</createSourcesJar>
              <shadeSourcesContent>true</shadeSourcesContent>
            </configuration>
+            <dependencies>
+              <dependency>
+                <groupId>org.apache.hadoop</groupId>
+                <artifactId>hadoop-maven-plugins</artifactId>
+                <version>${project.version}</version>
+              </dependency>
+            </dependencies>
            <executions>
              <execution>
                <phase>package</phase>
@ -154,9 +161,6 @@
                        <!-- Exclude snappy-java -->
                        <exclude>org/xerial/snappy/*</exclude>
                        <exclude>org/xerial/snappy/**/*</exclude>
-                        <!-- Exclude org.widlfly.openssl -->
-                        <exclude>org/wildfly/openssl/*</exclude>
-                        <exclude>org/wildfly/openssl/**/*</exclude>
                      </excludes>
                    </relocation>
                    <relocation>
@ -247,7 +251,8 @@
                    </relocation>
                  </relocations>
                  <transformers>
-                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                    <!-- Needed until MSHADE-182 -->
+                    <transformer implementation="org.apache.hadoop.maven.plugin.shade.resource.ServicesResourceTransformer"/>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheLicenseResourceTransformer"/>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.DontIncludeResourceTransformer">
                      <resource>NOTICE.txt</resource>
--- a/hadoop-client-modules/hadoop-client-check-invariants/pom.xml
+++ b/hadoop-client-modules/hadoop-client-check-invariants/pom.xml
@ -56,7 +56,7 @@
          <dependency>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>extra-enforcer-rules</artifactId>
-            <version>1.5.1</version>
+            <version>1.0-beta-3</version>
          </dependency>
        </dependencies>
        <executions>
--- a/hadoop-client-modules/hadoop-client-check-test-invariants/pom.xml
+++ b/hadoop-client-modules/hadoop-client-check-test-invariants/pom.xml
@ -60,7 +60,7 @@
          <dependency>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>extra-enforcer-rules</artifactId>
-            <version>1.5.1</version>
+            <version>1.0-beta-3</version>
          </dependency>
        </dependencies>
        <executions>
--- a/hadoop-client-modules/hadoop-client-integration-tests/pom.xml
+++ b/hadoop-client-modules/hadoop-client-integration-tests/pom.xml
@ -184,12 +184,6 @@
          <artifactId>hadoop-hdfs</artifactId>
          <scope>test</scope>
          <type>test-jar</type>
-          <exclusions>
-            <exclusion>
-              <groupId>org.ow2.asm</groupId>
-              <artifactId>asm-commons</artifactId>
-            </exclusion>
-          </exclusions>
        </dependency>
        <dependency>
          <groupId>org.apache.hadoop</groupId>
--- a/hadoop-client-modules/hadoop-client-minicluster/pom.xml
+++ b/hadoop-client-modules/hadoop-client-minicluster/pom.xml
@ -332,10 +332,6 @@
          <groupId>org.apache.hadoop.thirdparty</groupId>
          <artifactId>hadoop-shaded-guava</artifactId>
        </exclusion>
-        <exclusion>
-          <groupId>org.ow2.asm</groupId>
-          <artifactId>asm-commons</artifactId>
-        </exclusion>
      </exclusions>
    </dependency>
    <!-- Add optional runtime dependency on the in-development timeline server module
@ -423,26 +419,30 @@
      <optional>true</optional>
    </dependency>
    <dependency>
-      <groupId>com.github.pjfanning</groupId>
+      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-json</artifactId>
      <optional>true</optional>
      <exclusions>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.core</groupId>
-          <artifactId>jackson-core</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.core</groupId>
-          <artifactId>jackson-databind</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.jaxrs</groupId>
-          <artifactId>jackson-jaxrs-json-provider</artifactId>
-        </exclusion>
        <exclusion>
          <groupId>javax.xml.bind</groupId>
          <artifactId>jaxb-api</artifactId>
        </exclusion>
+        <exclusion>
+          <groupId>org.codehaus.jackson</groupId>
+          <artifactId>jackson-core-asl</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>org.codehaus.jackson</groupId>
+          <artifactId>jackson-mapper-asl</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>org.codehaus.jackson</groupId>
+          <artifactId>jackson-jaxrs</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>org.codehaus.jackson</groupId>
+          <artifactId>jackson-xc</artifactId>
+        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
@ -454,20 +454,6 @@
          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-servlet</artifactId>
      <optional>true</optional>
-      <exclusions>
-        <exclusion>
-          <groupId>javax.servlet</groupId>
-          <artifactId>servlet-api</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>javax.enterprise</groupId>
-          <artifactId>cdi-api</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>ch.qos.cal10n</groupId>
-          <artifactId>cal10n-api</artifactId>
-        </exclusion>
-      </exclusions>
    </dependency>
    <!-- skip org.apache.avro:avro-ipc because it doesn't look like hadoop-common actually uses it -->
    <dependency>
@ -671,6 +657,13 @@
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
+            <dependencies>
+              <dependency>
+                <groupId>org.apache.hadoop</groupId>
+                <artifactId>hadoop-maven-plugins</artifactId>
+                <version>${project.version}</version>
+              </dependency>
+            </dependencies>
            <executions>
              <execution>
                <phase>package</phase>
@ -697,6 +690,7 @@
                      <exclude>org.bouncycastle:*</exclude>
                      <!-- Leave snappy that includes native methods which cannot be relocated. -->
                      <exclude>org.xerial.snappy:*</exclude>
+                      <exclude>javax.ws.rs:javax.ws.rs-api</exclude>
                    </excludes>
                  </artifactSet>
                  <filters>
@ -749,12 +743,6 @@
                        <exclude>META-INF/versions/11/module-info.class</exclude>
                      </excludes>
                    </filter>
-                    <filter>
-                      <artifact>com.google.code.gson:gson</artifact>
-                      <excludes>
-                        <exclude>META-INF/versions/9/module-info.class</exclude>
-                      </excludes>
-                    </filter>

                    <!-- Mockito tries to include its own unrelocated copy of hamcrest. :( -->
                    <filter>
@ -1045,7 +1033,8 @@
                    </relocation>
                  </relocations>
                  <transformers>
-                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                    <!-- Needed until MSHADE-182 -->
+                    <transformer implementation="org.apache.hadoop.maven.plugin.shade.resource.ServicesResourceTransformer"/>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheLicenseResourceTransformer"/>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.DontIncludeResourceTransformer">
                      <resources>
--- a/hadoop-client-modules/hadoop-client-runtime/pom.xml
+++ b/hadoop-client-modules/hadoop-client-runtime/pom.xml
@ -128,6 +128,13 @@
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
+            <dependencies>
+              <dependency>
+                <groupId>org.apache.hadoop</groupId>
+                <artifactId>hadoop-maven-plugins</artifactId>
+                <version>${project.version}</version>
+              </dependency>
+            </dependencies>
            <executions>
              <execution>
                <phase>package</phase>
@ -148,7 +155,6 @@
                      <!-- Leave javax APIs that are stable -->
                      <!-- the jdk ships part of the javax.annotation namespace, so if we want to relocate this we'll have to care it out by class :( -->
                      <exclude>com.google.code.findbugs:jsr305</exclude>
-                      <exclude>io.netty:*</exclude>
                      <exclude>io.dropwizard.metrics:metrics-core</exclude>
                      <exclude>org.eclipse.jetty:jetty-servlet</exclude>
                      <exclude>org.eclipse.jetty:jetty-security</exclude>
@ -157,8 +163,7 @@
                      <exclude>org.bouncycastle:*</exclude>
                      <!-- Leave snappy that includes native methods which cannot be relocated. -->
                      <exclude>org.xerial.snappy:*</exclude>
-                      <!-- leave out kotlin classes -->
-                      <exclude>org.jetbrains.kotlin:*</exclude>
+                      <exclude>javax.ws.rs:javax.ws.rs-api</exclude>
                    </excludes>
                  </artifactSet>
                  <filters>
@ -244,13 +249,6 @@
                        <exclude>META-INF/versions/11/module-info.class</exclude>
                      </excludes>
                    </filter>
-                    <filter>
-                      <artifact>com.google.code.gson:gson</artifact>
-                      <excludes>
-                        <exclude>META-INF/versions/9/module-info.class</exclude>
-                      </excludes>
-                    </filter>
-
                  </filters>
                  <relocations>
                    <relocation>
@ -393,7 +391,8 @@
    -->
                  </relocations>
                  <transformers>
-                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                    <!-- Needed until MSHADE-182 -->
+                    <transformer implementation="org.apache.hadoop.maven.plugin.shade.resource.ServicesResourceTransformer"/>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheLicenseResourceTransformer"/>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.DontIncludeResourceTransformer">
                      <resources>
--- a/hadoop-client-modules/hadoop-client/pom.xml
+++ b/hadoop-client-modules/hadoop-client/pom.xml
@ -66,13 +66,9 @@
          <artifactId>jersey-core</artifactId>
        </exclusion>
        <exclusion>
-          <groupId>com.github.pjfanning</groupId>
+          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-json</artifactId>
        </exclusion>
-        <exclusion>
-          <groupId>org.codehaus.jettison</groupId>
-          <artifactId>jettison</artifactId>
-        </exclusion>
        <exclusion>
          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-server</artifactId>
@ -118,18 +114,6 @@
          <groupId>org.eclipse.jetty</groupId>
          <artifactId>jetty-server</artifactId>
        </exclusion>
-        <exclusion>
-          <groupId>org.jetbrains.kotlin</groupId>
-          <artifactId>kotlin-stdlib</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>org.jetbrains.kotlin</groupId>
-          <artifactId>kotlin-stdlib-common</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.squareup.okhttp3</groupId>
-          <artifactId>okhttp</artifactId>
-        </exclusion>
        <exclusion>
          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-core</artifactId>
@ -183,13 +167,9 @@
          <artifactId>jersey-core</artifactId>
        </exclusion>
        <exclusion>
-          <groupId>com.github.pjfanning</groupId>
+          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-json</artifactId>
        </exclusion>
-        <exclusion>
-          <groupId>org.codehaus.jettison</groupId>
-          <artifactId>jettison</artifactId>
-        </exclusion>
        <exclusion>
          <groupId>io.netty</groupId>
          <artifactId>netty</artifactId>
@ -238,13 +218,9 @@
          <artifactId>jersey-server</artifactId>
        </exclusion>
        <exclusion>
-          <groupId>com.github.pjfanning</groupId>
+          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-json</artifactId>
        </exclusion>
-        <exclusion>
-          <groupId>org.codehaus.jettison</groupId>
-          <artifactId>jettison</artifactId>
-        </exclusion>
        <exclusion>
          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-servlet</artifactId>
@ -299,13 +275,9 @@
          <artifactId>guice-servlet</artifactId>
        </exclusion>
        <exclusion>
-          <groupId>com.github.pjfanning</groupId>
+          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-json</artifactId>
        </exclusion>
-        <exclusion>
-          <groupId>org.codehaus.jettison</groupId>
-          <artifactId>jettison</artifactId>
-        </exclusion>
        <exclusion>
          <groupId>io.netty</groupId>
          <artifactId>netty</artifactId>
--- a/hadoop-cloud-storage-project/hadoop-cloud-storage/pom.xml
+++ b/hadoop-cloud-storage-project/hadoop-cloud-storage/pom.xml
@ -101,10 +101,6 @@
          <groupId>org.apache.zookeeper</groupId>
          <artifactId>zookeeper</artifactId>
        </exclusion>
-        <exclusion>
-          <groupId>org.projectlombok</groupId>
-          <artifactId>lombok</artifactId>
-        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
@ -127,6 +123,11 @@
      <artifactId>hadoop-azure-datalake</artifactId>
      <scope>compile</scope>
    </dependency>
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-openstack</artifactId>
+      <scope>compile</scope>
+    </dependency>
    <dependency>
      <groupId>org.apache.hadoop</groupId>
      <artifactId>hadoop-cos</artifactId>
--- a/hadoop-cloud-storage-project/hadoop-cos/pom.xml
+++ b/hadoop-cloud-storage-project/hadoop-cos/pom.xml
@ -109,7 +109,7 @@
    <dependency>
      <groupId>com.qcloud</groupId>
      <artifactId>cos_api-bundle</artifactId>
-      <version>5.6.69</version>
+      <version>5.6.19</version>
      <scope>compile</scope>
    </dependency>

--- a/hadoop-cloud-storage-project/hadoop-huaweicloud/pom.xml
+++ b/hadoop-cloud-storage-project/hadoop-huaweicloud/pom.xml
@ -104,10 +104,6 @@
      <groupId>jdk.tools</groupId>
      <artifactId>jdk.tools</artifactId>
      </exclusion>
-        <exclusion>
-          <groupId>org.javassist</groupId>
-          <artifactId>javassist</artifactId>
-        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
@ -165,14 +161,6 @@
          <artifactId>okio</artifactId>
          <groupId>com.squareup.okio</groupId>
        </exclusion>
-        <exclusion>
-          <artifactId>log4j-core</artifactId>
-          <groupId>org.apache.logging.log4j</groupId>
-        </exclusion>
-        <exclusion>
-          <artifactId>log4j-api</artifactId>
-          <groupId>org.apache.logging.log4j</groupId>
-        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
--- a/hadoop-common-project/hadoop-auth-examples/src/main/java/org/apache/hadoop/security/authentication/examples/RequestLoggerFilter.java
+++ b/hadoop-common-project/hadoop-auth-examples/src/main/java/org/apache/hadoop/security/authentication/examples/RequestLoggerFilter.java
@ -116,7 +116,6 @@ public class RequestLoggerFilter implements Filter {
    public void addCookie(Cookie cookie) {
      super.addCookie(cookie);
      List<String> cookies = getHeaderValues("Set-Cookie", false);
-      cookies.addAll(getHeaderValues("set-cookie", false));
      cookies.add(cookie.getName() + "=" + cookie.getValue());
    }

--- a/hadoop-common-project/hadoop-auth/pom.xml
+++ b/hadoop-common-project/hadoop-auth/pom.xml
@ -110,8 +110,20 @@
          <groupId>org.bouncycastle</groupId>
          <artifactId>bcprov-jdk15on</artifactId>
        </exclusion>
+        <!-- HACK.  Transitive dependency for nimbus-jose-jwt.  Needed for
+        packaging.  Please re-check this version when updating
+        nimbus-jose-jwt.  Please read HADOOP-14903 for more details.
+        -->
+        <exclusion>
+          <groupId>net.minidev</groupId>
+          <artifactId>json-smart</artifactId>
+        </exclusion>
      </exclusions>
    </dependency>
+    <dependency>
+      <groupId>net.minidev</groupId>
+      <artifactId>json-smart</artifactId>
+    </dependency>
    <dependency>
      <groupId>org.apache.zookeeper</groupId>
      <artifactId>zookeeper</artifactId>
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/client/AuthenticatedURL.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/client/AuthenticatedURL.java
@ -92,9 +92,6 @@ public class AuthenticatedURL {
    @Override
    public void put(URI uri, Map<String, List<String>> responseHeaders) {
      List<String> headers = responseHeaders.get("Set-Cookie");
-      if (headers == null) {
-        headers = responseHeaders.get("set-cookie");
-      }
      if (headers != null) {
        for (String header : headers) {
          List<HttpCookie> cookies;
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/client/KerberosAuthenticator.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/client/KerberosAuthenticator.java
@ -280,9 +280,6 @@ public class KerberosAuthenticator implements Authenticator {
    boolean negotiate = false;
    if (conn.getResponseCode() == HttpURLConnection.HTTP_UNAUTHORIZED) {
      String authHeader = conn.getHeaderField(WWW_AUTHENTICATE);
-      if (authHeader == null) {
-        authHeader = conn.getHeaderField(WWW_AUTHENTICATE.toLowerCase());
-      }
      negotiate = authHeader != null && authHeader.trim().startsWith(NEGOTIATE);
    }
    return negotiate;
@ -391,9 +388,6 @@ public class KerberosAuthenticator implements Authenticator {
    int status = conn.getResponseCode();
    if (status == HttpURLConnection.HTTP_OK || status == HttpURLConnection.HTTP_UNAUTHORIZED) {
      String authHeader = conn.getHeaderField(WWW_AUTHENTICATE);
-      if (authHeader == null) {
-        authHeader = conn.getHeaderField(WWW_AUTHENTICATE.toLowerCase());
-      }
      if (authHeader == null || !authHeader.trim().startsWith(NEGOTIATE)) {
        throw new AuthenticationException("Invalid SPNEGO sequence, '" + WWW_AUTHENTICATE +
                                          "' header incorrect: " + authHeader);
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/server/AuthenticationFilter.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/server/AuthenticationFilter.java
@ -616,9 +616,7 @@ public class AuthenticationFilter implements Filter {
        // present.. reset to 403 if not found..
        if ((errCode == HttpServletResponse.SC_UNAUTHORIZED)
            && (!httpResponse.containsHeader(
-                KerberosAuthenticator.WWW_AUTHENTICATE)
-                && !httpResponse.containsHeader(
-                KerberosAuthenticator.WWW_AUTHENTICATE.toLowerCase()))) {
+                KerberosAuthenticator.WWW_AUTHENTICATE))) {
          errCode = HttpServletResponse.SC_FORBIDDEN;
        }
        // After Jetty 9.4.21, sendError() no longer allows a custom message.
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/CertificateUtil.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/CertificateUtil.java
@ -18,6 +18,7 @@
 package org.apache.hadoop.security.authentication.util;

 import java.io.ByteArrayInputStream;
+import java.io.UnsupportedEncodingException;
 import java.nio.charset.StandardCharsets;
 import java.security.PublicKey;
 import java.security.cert.CertificateException;
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/JaasConfiguration.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/JaasConfiguration.java
@ -1,77 +0,0 @@
-/**
- * Licensed 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. See accompanying LICENSE file.
- */
-package org.apache.hadoop.security.authentication.util;
-
-import java.util.HashMap;
-import java.util.Map;
-import javax.security.auth.login.AppConfigurationEntry;
-import javax.security.auth.login.Configuration;
-
-
-/**
- * Creates a programmatic version of a jaas.conf file. This can be used
- * instead of writing a jaas.conf file and setting the system property,
- * "java.security.auth.login.config", to point to that file. It is meant to be
- * used for connecting to ZooKeeper.
- */
-public class JaasConfiguration extends Configuration {
-
-  private final javax.security.auth.login.Configuration baseConfig =
-      javax.security.auth.login.Configuration.getConfiguration();
-  private final AppConfigurationEntry[] entry;
-  private final String entryName;
-
-  /**
-   * Add an entry to the jaas configuration with the passed in name,
-   * principal, and keytab. The other necessary options will be set for you.
-   *
-   * @param entryName The name of the entry (e.g. "Client")
-   * @param principal The principal of the user
-   * @param keytab The location of the keytab
-   */
-  public JaasConfiguration(String entryName, String principal, String keytab) {
-    this.entryName = entryName;
-    Map<String, String> options = new HashMap<>();
-    options.put("keyTab", keytab);
-    options.put("principal", principal);
-    options.put("useKeyTab", "true");
-    options.put("storeKey", "true");
-    options.put("useTicketCache", "false");
-    options.put("refreshKrb5Config", "true");
-    String jaasEnvVar = System.getenv("HADOOP_JAAS_DEBUG");
-    if ("true".equalsIgnoreCase(jaasEnvVar)) {
-      options.put("debug", "true");
-    }
-    entry = new AppConfigurationEntry[]{
-        new AppConfigurationEntry(getKrb5LoginModuleName(),
-            AppConfigurationEntry.LoginModuleControlFlag.REQUIRED,
-            options)};
-  }
-
-  @Override
-  public AppConfigurationEntry[] getAppConfigurationEntry(String name) {
-    return (entryName.equals(name)) ? entry : ((baseConfig != null)
-        ? baseConfig.getAppConfigurationEntry(name) : null);
-  }
-
-  private String getKrb5LoginModuleName() {
-    String krb5LoginModuleName;
-    if (System.getProperty("java.vendor").contains("IBM")) {
-      krb5LoginModuleName = "com.ibm.security.auth.module.Krb5LoginModule";
-    } else {
-      krb5LoginModuleName = "com.sun.security.auth.module.Krb5LoginModule";
-    }
-    return krb5LoginModuleName;
-  }
-}
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/KerberosUtil.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/KerberosUtil.java
@ -236,7 +236,7 @@ public class KerberosUtil {
   */
  static final String[] getPrincipalNames(String keytabFileName) throws IOException {
    Keytab keytab = Keytab.loadKeytab(new File(keytabFileName));
-    Set<String> principals = new HashSet<>();
+    Set<String> principals = new HashSet<String>();
    List<PrincipalName> entries = keytab.getPrincipals();
    for (PrincipalName entry : entries) {
      principals.add(entry.getName().replace("\\", "/"));
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/ZKSignerSecretProvider.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/ZKSignerSecretProvider.java
@ -17,9 +17,12 @@ import org.apache.hadoop.classification.VisibleForTesting;
 import java.nio.ByteBuffer;
 import java.security.SecureRandom;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.Properties;
 import java.util.Random;
+import javax.security.auth.login.AppConfigurationEntry;
 import javax.security.auth.login.Configuration;
 import javax.servlet.ServletContext;
 import org.apache.curator.RetryPolicy;
@ -426,4 +429,62 @@ public class ZKSignerSecretProvider extends RolloverSignerSecretProvider {
      return saslACL;
    }
  }
+
+  /**
+   * Creates a programmatic version of a jaas.conf file. This can be used
+   * instead of writing a jaas.conf file and setting the system property,
+   * "java.security.auth.login.config", to point to that file. It is meant to be
+   * used for connecting to ZooKeeper.
+   */
+  @InterfaceAudience.Private
+  public static class JaasConfiguration extends Configuration {
+
+    private final javax.security.auth.login.Configuration baseConfig =
+        javax.security.auth.login.Configuration.getConfiguration();
+    private static AppConfigurationEntry[] entry;
+    private String entryName;
+
+    /**
+     * Add an entry to the jaas configuration with the passed in name,
+     * principal, and keytab. The other necessary options will be set for you.
+     *
+     * @param entryName The name of the entry (e.g. "Client")
+     * @param principal The principal of the user
+     * @param keytab The location of the keytab
+     */
+    public JaasConfiguration(String entryName, String principal, String keytab) {
+      this.entryName = entryName;
+      Map<String, String> options = new HashMap<String, String>();
+      options.put("keyTab", keytab);
+      options.put("principal", principal);
+      options.put("useKeyTab", "true");
+      options.put("storeKey", "true");
+      options.put("useTicketCache", "false");
+      options.put("refreshKrb5Config", "true");
+      String jaasEnvVar = System.getenv("HADOOP_JAAS_DEBUG");
+      if (jaasEnvVar != null && "true".equalsIgnoreCase(jaasEnvVar)) {
+        options.put("debug", "true");
+      }
+      entry = new AppConfigurationEntry[]{
+                  new AppConfigurationEntry(getKrb5LoginModuleName(),
+                  AppConfigurationEntry.LoginModuleControlFlag.REQUIRED,
+                  options)};
+    }
+
+    @Override
+    public AppConfigurationEntry[] getAppConfigurationEntry(String name) {
+      return (entryName.equals(name)) ? entry : ((baseConfig != null)
+        ? baseConfig.getAppConfigurationEntry(name) : null);
+    }
+
+    private String getKrb5LoginModuleName() {
+      String krb5LoginModuleName;
+      if (System.getProperty("java.vendor").contains("IBM")) {
+        krb5LoginModuleName = "com.ibm.security.auth.module.Krb5LoginModule";
+      } else {
+        krb5LoginModuleName = "com.sun.security.auth.module.Krb5LoginModule";
+      }
+      return krb5LoginModuleName;
+    }
+  }
 }
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/util/PlatformName.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/util/PlatformName.java
@ -18,10 +18,6 @@

 package org.apache.hadoop.util;

-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.util.Arrays;
-
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;

@ -37,71 +33,21 @@ public class PlatformName {
   * per the java-vm.
   */
  public static final String PLATFORM_NAME =
-      (System.getProperty("os.name").startsWith("Windows") ?
-      System.getenv("os") : System.getProperty("os.name"))
-      + "-" + System.getProperty("os.arch") + "-"
-      + System.getProperty("sun.arch.data.model");
+      (System.getProperty("os.name").startsWith("Windows")
+      ? System.getenv("os") : System.getProperty("os.name"))
+      + "-" + System.getProperty("os.arch")
+      + "-" + System.getProperty("sun.arch.data.model");

  /**
   * The java vendor name used in this platform.
   */
  public static final String JAVA_VENDOR_NAME = System.getProperty("java.vendor");

-  /**
-   * Define a system class accessor that is open to changes in underlying implementations
-   * of the system class loader modules.
-   */
-  private static final class SystemClassAccessor extends ClassLoader {
-    public Class<?> getSystemClass(String className) throws ClassNotFoundException {
-      return findSystemClass(className);
-    }
-  }
-
  /**
   * A public static variable to indicate the current java vendor is
-   * IBM and the type is Java Technology Edition which provides its
-   * own implementations of many security packages and Cipher suites.
-   * Note that these are not provided in Semeru runtimes:
-   * See https://developer.ibm.com/languages/java/semeru-runtimes for details.
+   * IBM java or not.
   */
-  public static final boolean IBM_JAVA = JAVA_VENDOR_NAME.contains("IBM") &&
-      hasIbmTechnologyEditionModules();
-
-  private static boolean hasIbmTechnologyEditionModules() {
-    return Arrays.asList(
-        "com.ibm.security.auth.module.JAASLoginModule",
-        "com.ibm.security.auth.module.Win64LoginModule",
-        "com.ibm.security.auth.module.NTLoginModule",
-        "com.ibm.security.auth.module.AIX64LoginModule",
-        "com.ibm.security.auth.module.LinuxLoginModule",
-        "com.ibm.security.auth.module.Krb5LoginModule"
-    ).stream().anyMatch((module) -> isSystemClassAvailable(module));
-  }
-
-  /**
-   * In rare cases where different behaviour is performed based on the JVM vendor
-   * this method should be used to test for a unique JVM class provided by the
-   * vendor rather than using the vendor method. For example if on JVM provides a
-   * different Kerberos login module testing for that login module being loadable
-   * before configuring to use it is preferable to using the vendor data.
-   *
-   * @param className the name of a class in the JVM to test for
-   * @return true if the class is available, false otherwise.
-   */
-  private static boolean isSystemClassAvailable(String className) {
-    return AccessController.doPrivileged((PrivilegedAction<Boolean>) () -> {
-      try {
-        // Using ClassLoader.findSystemClass() instead of
-        // Class.forName(className, false, null) because Class.forName with a null
-        // ClassLoader only looks at the boot ClassLoader with Java 9 and above
-        // which doesn't look at all the modules available to the findSystemClass.
-        new SystemClassAccessor().getSystemClass(className);
-        return true;
-      } catch (Exception ignored) {
-        return false;
-      }
-    });
-  }
+  public static final boolean IBM_JAVA = JAVA_VENDOR_NAME.contains("IBM");

  public static void main(String[] args) {
    System.out.println(PLATFORM_NAME);
--- a/hadoop-common-project/hadoop-auth/src/site/markdown/Configuration.md
+++ b/hadoop-common-project/hadoop-auth/src/site/markdown/Configuration.md
@ -24,7 +24,7 @@ This filter must be configured in front of all the web application resources tha

 The Hadoop Auth and dependent JAR files must be in the web application classpath (commonly the `WEB-INF/lib` directory).

-Hadoop Auth uses SLF4J-API for logging. Auth Maven POM dependencies define the SLF4J API dependency but it does not define the dependency on a concrete logging implementation, this must be addded explicitly to the web application. For example, if the web applicationan uses Log4j, the SLF4J-LOG4J12 and LOG4J jar files must be part of the web application classpath as well as the Log4j configuration file.
+Hadoop Auth uses SLF4J-API for logging. Auth Maven POM dependencies define the SLF4J API dependency but it does not define the dependency on a concrete logging implementation, this must be addded explicitly to the web application. For example, if the web applicationan uses Log4j, the SLF4J-LOG4J12 and LOG4J jar files must be part part of the web application classpath as well as the Log4j configuration file.

 ### Common Configuration parameters

--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/KerberosTestUtils.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/KerberosTestUtils.java
@ -108,9 +108,9 @@ public class KerberosTestUtils {
  public static <T> T doAs(String principal, final Callable<T> callable) throws Exception {
    LoginContext loginContext = null;
    try {
-      Set<Principal> principals = new HashSet<>();
+      Set<Principal> principals = new HashSet<Principal>();
      principals.add(new KerberosPrincipal(KerberosTestUtils.getClientPrincipal()));
-      Subject subject = new Subject(false, principals, new HashSet<>(), new HashSet<>());
+      Subject subject = new Subject(false, principals, new HashSet<Object>(), new HashSet<Object>());
      loginContext = new LoginContext("", subject, null, new KerberosConfiguration(principal));
      loginContext.login();
      subject = loginContext.getSubject();
--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/TestAuthenticatedURL.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/TestAuthenticatedURL.java
@ -89,44 +89,6 @@ public class TestAuthenticatedURL {
    }
  }

-  @Test
-  public void testExtractTokenCookieHeader() throws Exception {
-    HttpURLConnection conn = Mockito.mock(HttpURLConnection.class);
-
-    Mockito.when(conn.getResponseCode()).thenReturn(HttpURLConnection.HTTP_OK);
-
-    String tokenStr = "foo";
-    Map<String, List<String>> headers = new HashMap<>();
-    List<String> cookies = new ArrayList<>();
-    cookies.add(AuthenticatedURL.AUTH_COOKIE + "=" + tokenStr);
-    headers.put("Set-Cookie", cookies);
-    Mockito.when(conn.getHeaderFields()).thenReturn(headers);
-
-    AuthenticatedURL.Token token = new AuthenticatedURL.Token();
-    AuthenticatedURL.extractToken(conn, token);
-
-    Assert.assertTrue(token.isSet());
-  }
-
-  @Test
-  public void testExtractTokenLowerCaseCookieHeader() throws Exception {
-    HttpURLConnection conn = Mockito.mock(HttpURLConnection.class);
-
-    Mockito.when(conn.getResponseCode()).thenReturn(HttpURLConnection.HTTP_OK);
-
-    String tokenStr = "foo";
-    Map<String, List<String>> headers = new HashMap<>();
-    List<String> cookies = new ArrayList<>();
-    cookies.add(AuthenticatedURL.AUTH_COOKIE + "=" + tokenStr);
-    headers.put("set-cookie", cookies);
-    Mockito.when(conn.getHeaderFields()).thenReturn(headers);
-
-    AuthenticatedURL.Token token = new AuthenticatedURL.Token();
-    AuthenticatedURL.extractToken(conn, token);
-
-    Assert.assertTrue(token.isSet());
-  }
-
  @Test
  public void testConnectionConfigurator() throws Exception {
    HttpURLConnection conn = Mockito.mock(HttpURLConnection.class);
--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/TestKerberosAuthenticator.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/TestKerberosAuthenticator.java
@ -21,13 +21,8 @@ import static org.apache.hadoop.security.authentication.server.KerberosAuthentic
 import static org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler.NAME_RULES;

 import java.io.IOException;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
 import java.nio.charset.CharacterCodingException;
 import javax.security.sasl.AuthenticationException;
-
-import org.apache.commons.codec.binary.Base64;
-import org.apache.commons.lang3.reflect.FieldUtils;
 import org.apache.hadoop.minikdc.KerberosSecurityTestcase;
 import org.apache.hadoop.security.authentication.KerberosTestUtils;
 import org.apache.hadoop.security.authentication.server.AuthenticationFilter;
@ -37,12 +32,10 @@ import org.apache.hadoop.security.authentication.server.KerberosAuthenticationHa
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
-import org.mockito.Mockito;

 import java.io.File;
 import java.net.HttpURLConnection;
 import java.net.URL;
-import java.util.Arrays;
 import java.util.Properties;
 import java.util.concurrent.Callable;

@ -255,79 +248,4 @@ public class TestKerberosAuthenticator extends KerberosSecurityTestcase {
    Assert.assertTrue(ex.equals(ex2));
  }

-  @Test(timeout = 60000)
-  public void testNegotiate() throws NoSuchMethodException, InvocationTargetException,
-          IllegalAccessException, IOException {
-    KerberosAuthenticator kerberosAuthenticator = new KerberosAuthenticator();
-
-    HttpURLConnection conn = Mockito.mock(HttpURLConnection.class);
-    Mockito.when(conn.getHeaderField(KerberosAuthenticator.WWW_AUTHENTICATE)).
-            thenReturn(KerberosAuthenticator.NEGOTIATE);
-    Mockito.when(conn.getResponseCode()).thenReturn(HttpURLConnection.HTTP_UNAUTHORIZED);
-
-    Method method = KerberosAuthenticator.class.getDeclaredMethod("isNegotiate",
-            HttpURLConnection.class);
-    method.setAccessible(true);
-
-    Assert.assertTrue((boolean)method.invoke(kerberosAuthenticator, conn));
-  }
-
-  @Test(timeout = 60000)
-  public void testNegotiateLowerCase() throws NoSuchMethodException, InvocationTargetException,
-          IllegalAccessException, IOException {
-    KerberosAuthenticator kerberosAuthenticator = new KerberosAuthenticator();
-
-    HttpURLConnection conn = Mockito.mock(HttpURLConnection.class);
-    Mockito.when(conn.getHeaderField("www-authenticate"))
-            .thenReturn(KerberosAuthenticator.NEGOTIATE);
-    Mockito.when(conn.getResponseCode()).thenReturn(HttpURLConnection.HTTP_UNAUTHORIZED);
-
-    Method method = KerberosAuthenticator.class.getDeclaredMethod("isNegotiate",
-            HttpURLConnection.class);
-    method.setAccessible(true);
-
-    Assert.assertTrue((boolean)method.invoke(kerberosAuthenticator, conn));
-  }
-
-  @Test(timeout = 60000)
-  public void testReadToken() throws NoSuchMethodException, IOException, IllegalAccessException,
-          InvocationTargetException {
-    KerberosAuthenticator kerberosAuthenticator = new KerberosAuthenticator();
-    FieldUtils.writeField(kerberosAuthenticator, "base64", new Base64(), true);
-
-    Base64 base64 = new Base64();
-
-    HttpURLConnection conn = Mockito.mock(HttpURLConnection.class);
-    Mockito.when(conn.getResponseCode()).thenReturn(HttpURLConnection.HTTP_UNAUTHORIZED);
-    Mockito.when(conn.getHeaderField(KerberosAuthenticator.WWW_AUTHENTICATE))
-            .thenReturn(KerberosAuthenticator.NEGOTIATE + " " +
-                    Arrays.toString(base64.encode("foobar".getBytes())));
-
-    Method method = KerberosAuthenticator.class.getDeclaredMethod("readToken",
-            HttpURLConnection.class);
-    method.setAccessible(true);
-
-    method.invoke(kerberosAuthenticator, conn); // expecting this not to throw an exception
-  }
-
-  @Test(timeout = 60000)
-  public void testReadTokenLowerCase() throws NoSuchMethodException, IOException,
-          IllegalAccessException, InvocationTargetException {
-    KerberosAuthenticator kerberosAuthenticator = new KerberosAuthenticator();
-    FieldUtils.writeField(kerberosAuthenticator, "base64", new Base64(), true);
-
-    Base64 base64 = new Base64();
-
-    HttpURLConnection conn = Mockito.mock(HttpURLConnection.class);
-    Mockito.when(conn.getResponseCode()).thenReturn(HttpURLConnection.HTTP_UNAUTHORIZED);
-    Mockito.when(conn.getHeaderField("www-authenticate"))
-            .thenReturn(KerberosAuthenticator.NEGOTIATE +
-                    Arrays.toString(base64.encode("foobar".getBytes())));
-
-    Method method = KerberosAuthenticator.class.getDeclaredMethod("readToken",
-            HttpURLConnection.class);
-    method.setAccessible(true);
-
-    method.invoke(kerberosAuthenticator, conn); // expecting this not to throw an exception
-  }
 }
--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/server/TestAuthenticationFilter.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/server/TestAuthenticationFilter.java
@ -574,44 +574,6 @@ public class TestAuthenticationFilter {
    }
  }

-  @Test
-  public void testDoFilterNotAuthenticatedLowerCase() throws Exception {
-    AuthenticationFilter filter = new AuthenticationFilter();
-    try {
-      FilterConfig config = Mockito.mock(FilterConfig.class);
-      Mockito.when(config.getInitParameter("management.operation.return")).
-              thenReturn("true");
-      Mockito.when(config.getInitParameter(AuthenticationFilter.AUTH_TYPE)).thenReturn(
-              DummyAuthenticationHandler.class.getName());
-      Mockito.when(config.getInitParameterNames()).thenReturn(
-              new Vector<>(
-                      Arrays.asList(AuthenticationFilter.AUTH_TYPE,
-                              "management.operation.return")).elements());
-      getMockedServletContextWithStringSigner(config);
-      filter.init(config);
-
-      HttpServletRequest request = Mockito.mock(HttpServletRequest.class);
-      Mockito.when(request.getRequestURL()).thenReturn(new StringBuffer("http://foo:8080/bar"));
-
-      HttpServletResponse response = Mockito.mock(HttpServletResponse.class);
-
-      FilterChain chain = Mockito.mock(FilterChain.class);
-
-      Mockito.doAnswer((Answer<Object>) invocation -> {
-        Assert.fail();
-        return null;
-      }).when(chain).doFilter(any(), any());
-
-      Mockito.when(response.containsHeader("www-authenticate")).thenReturn(true);
-      filter.doFilter(request, response, chain);
-
-      Mockito.verify(response).sendError(
-              HttpServletResponse.SC_UNAUTHORIZED, "Authentication required");
-    } finally {
-      filter.destroy();
-    }
-  }
-
  private void _testDoFilterAuthentication(boolean withDomainPath,
                                           boolean invalidToken,
                                           boolean expired) throws Exception {
--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/server/TestJWTRedirectAuthenticationHandler.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/server/TestJWTRedirectAuthenticationHandler.java
@ -25,6 +25,7 @@ import java.security.interfaces.RSAPublicKey;
 import java.util.List;
 import java.util.ArrayList;
 import java.util.Properties;
+import java.util.Vector;
 import java.util.Date;

 import javax.servlet.ServletException;
--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/server/TestPseudoAuthenticationHandler.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/server/TestPseudoAuthenticationHandler.java
@ -13,6 +13,7 @@
 */
 package org.apache.hadoop.security.authentication.server;

+import org.apache.hadoop.security.authentication.client.AuthenticationException;
 import org.apache.hadoop.security.authentication.client.PseudoAuthenticator;
 import org.junit.Assert;
 import org.junit.Test;
--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/util/StringSignerSecretProvider.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/util/StringSignerSecretProvider.java
@ -18,6 +18,7 @@ import java.util.Properties;
 import javax.servlet.ServletContext;

 import org.apache.hadoop.classification.VisibleForTesting;
+import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.security.authentication.server.AuthenticationFilter;

--- a/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/util/TestJaasConfiguration.java
+++ b/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/util/TestJaasConfiguration.java
@ -32,8 +32,8 @@ public class TestJaasConfiguration {
      krb5LoginModuleName = "com.sun.security.auth.module.Krb5LoginModule";
    }

-    JaasConfiguration jConf =
-            new JaasConfiguration("foo", "foo/localhost",
+    ZKSignerSecretProvider.JaasConfiguration jConf =
+            new ZKSignerSecretProvider.JaasConfiguration("foo", "foo/localhost",
            "/some/location/foo.keytab");
    AppConfigurationEntry[] entries = jConf.getAppConfigurationEntry("bar");
    Assert.assertNull(entries);
--- a/hadoop-common-project/hadoop-common/dev-support/findbugsExcludeFile.xml
+++ b/hadoop-common-project/hadoop-common/dev-support/findbugsExcludeFile.xml
@ -379,6 +379,21 @@
       <Bug code="JLM" />
     </Match>

+  <!--
+  OpenStack Swift FS module -closes streams in a different method
+  from where they are opened.
+  -->
+    <Match>
+      <Class name="org.apache.hadoop.fs.swift.snative.SwiftNativeOutputStream"/>
+      <Method name="uploadFileAttempt"/>
+      <Bug pattern="OBL_UNSATISFIED_OBLIGATION"/>
+    </Match>
+    <Match>
+      <Class name="org.apache.hadoop.fs.swift.snative.SwiftNativeOutputStream"/>
+      <Method name="uploadFilePartAttempt"/>
+      <Bug pattern="OBL_UNSATISFIED_OBLIGATION"/>
+    </Match>
+
     <!-- code from maven source, null value is checked at callee side. -->
     <Match>
       <Class name="org.apache.hadoop.util.ComparableVersion$ListItem" />
--- a/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_2.10.2.xml
+++ b/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_2.10.2.xml
--- a/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.2.4.xml
+++ b/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.2.4.xml
--- a/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.3.3.xml
+++ b/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.3.3.xml
--- a/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.3.4.xml
+++ b/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.3.4.xml
--- a/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.3.5.xml
+++ b/hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.3.5.xml
--- a/hadoop-common-project/hadoop-common/pom.xml
+++ b/hadoop-common-project/hadoop-common/pom.xml
@ -141,53 +141,23 @@
      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-servlet</artifactId>
      <scope>compile</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>javax.enterprise</groupId>
-          <artifactId>cdi-api</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>javax.servlet</groupId>
-          <artifactId>servlet-api</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>ch.qos.cal10n</groupId>
-          <artifactId>cal10n-api</artifactId>
-        </exclusion>
-      </exclusions>
    </dependency>
    <dependency>
-      <groupId>com.github.pjfanning</groupId>
+      <!-- Used, even though 'mvn dependency:analyze' doesn't find it -->
+      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-json</artifactId>
      <scope>compile</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.core</groupId>
-          <artifactId>jackson-core</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.core</groupId>
-          <artifactId>jackson-databind</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.jaxrs</groupId>
-          <artifactId>jackson-jaxrs-json-provider</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-    <dependency>
-      <!--
-      adding jettison as direct dependency (as jersey-json's jettison dependency is vulnerable with verison 1.1),
-      so those who depends on hadoop-common externally will get the non-vulnerable jettison
-      -->
-      <groupId>org.codehaus.jettison</groupId>
-      <artifactId>jettison</artifactId>
    </dependency>
    <dependency>
      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-server</artifactId>
      <scope>compile</scope>
    </dependency>
+    <dependency>
+      <groupId>commons-logging</groupId>
+      <artifactId>commons-logging</artifactId>
+      <scope>compile</scope>
+    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
@ -203,6 +173,11 @@
      <artifactId>assertj-core</artifactId>
      <scope>test</scope>
    </dependency>
+    <dependency>
+      <groupId>org.glassfish.grizzly</groupId>
+      <artifactId>grizzly-http-servlet</artifactId>
+      <scope>test</scope>
+    </dependency>
    <dependency>
      <groupId>commons-beanutils</groupId>
      <artifactId>commons-beanutils</artifactId>
@ -212,12 +187,6 @@
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-configuration2</artifactId>
      <scope>compile</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>javax.servlet</groupId>
-          <artifactId>servlet-api</artifactId>
-        </exclusion>
-      </exclusions>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
@ -340,14 +309,6 @@
        </exclusion>
      </exclusions>
    </dependency>
-    <dependency>
-      <groupId>io.netty</groupId>
-      <artifactId>netty-handler</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>io.netty</groupId>
-      <artifactId>netty-transport-native-epoll</artifactId>
-    </dependency>
    <dependency>
      <groupId>io.dropwizard.metrics</groupId>
      <artifactId>metrics-core</artifactId>
@ -389,11 +350,6 @@
      <artifactId>mockwebserver</artifactId>
      <scope>test</scope>
    </dependency>
-    <dependency>
-      <groupId>com.squareup.okio</groupId>
-      <artifactId>okio-jvm</artifactId>
-      <scope>test</scope>
-    </dependency>
    <dependency>
      <groupId>dnsjava</groupId>
      <artifactId>dnsjava</artifactId>
@ -660,10 +616,9 @@
                    <goal>exec</goal>
                </goals>
                <configuration>
-                    <executable>${shell-executable}</executable>
+                    <executable>${basedir}/../../dev-support/bin/shelldocs</executable>
                    <workingDirectory>src/site/markdown</workingDirectory>
                    <arguments>
-                        <argument>${basedir}/../../dev-support/bin/shelldocs</argument>
                        <argument>--skipprnorep</argument>
                        <argument>--output</argument>
                        <argument>${basedir}/src/site/markdown/UnixShellAPI.md</argument>
@ -853,36 +808,6 @@
              </execution>
            </executions>
          </plugin>
-          <plugin>
-            <!--Sets the skip.platformToolsetDetection to true if use.platformToolsetVersion is specified.
-            This implies that the automatic detection of which platform toolset to use will be skipped
-            and the one specified with use.platformToolsetVersion will be used.-->
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-antrun-plugin</artifactId>
-            <version>1.8</version>
-            <executions>
-              <execution>
-                <phase>validate</phase>
-                <goals>
-                  <goal>run</goal>
-                </goals>
-                <configuration>
-                  <exportAntProperties>true</exportAntProperties>
-                  <target>
-                    <condition property="skip.platformToolsetDetection" value="true" else="false">
-                      <isset property="use.platformToolsetVersion"/>
-                    </condition>
-                    <!--Unfortunately, Maven doesn't have a way to negate a flag, thus we declare a
-                     property which holds the negated value of skip.platformToolsetDetection.-->
-                    <condition property="skip.platformToolsetDetection.negated" value="false" else="true">
-                      <isset property="use.platformToolsetVersion"/>
-                    </condition>
-                    <echo>Skip platform toolset version detection = ${skip.platformToolsetDetection}</echo>
-                  </target>
-                </configuration>
-              </execution>
-            </executions>
-          </plugin>
          <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
@ -894,7 +819,6 @@
                  <goal>exec</goal>
                </goals>
                <configuration>
-                  <skip>${skip.platformToolsetDetection}</skip>
                  <executable>${basedir}\..\..\dev-support\bin\win-vs-upgrade.cmd</executable>
                  <arguments>
                    <argument>${basedir}\src\main\winutils</argument>
@ -909,7 +833,6 @@
                  <goal>exec</goal>
                </goals>
                <configuration>
-                  <skip>${skip.platformToolsetDetection}</skip>
                  <executable>msbuild</executable>
                  <arguments>
                    <argument>${basedir}/src/main/winutils/winutils.sln</argument>
@ -922,27 +845,6 @@
                  </arguments>
                </configuration>
              </execution>
-              <execution>
-                <id>compile-ms-winutils-using-build-tools</id>
-                <phase>compile</phase>
-                <goals>
-                  <goal>exec</goal>
-                </goals>
-                <configuration>
-                  <skip>${skip.platformToolsetDetection.negated}</skip>
-                  <executable>msbuild</executable>
-                  <arguments>
-                    <argument>${basedir}/src/main/winutils/winutils.sln</argument>
-                    <argument>/nologo</argument>
-                    <argument>/p:Configuration=Release</argument>
-                    <argument>/p:OutDir=${project.build.directory}/bin/</argument>
-                    <argument>/p:IntermediateOutputPath=${project.build.directory}/winutils/</argument>
-                    <argument>/p:WsceConfigDir=${wsce.config.dir}</argument>
-                    <argument>/p:WsceConfigFile=${wsce.config.file}</argument>
-                    <argument>/p:PlatformToolset=${use.platformToolsetVersion}</argument>
-                  </arguments>
-                </configuration>
-              </execution>
              <execution>
                <id>convert-ms-native-dll</id>
                <phase>generate-sources</phase>
@ -950,7 +852,6 @@
                  <goal>exec</goal>
                </goals>
                <configuration>
-                  <skip>${skip.platformToolsetDetection}</skip>
                  <executable>${basedir}\..\..\dev-support\bin\win-vs-upgrade.cmd</executable>
                  <arguments>
                    <argument>${basedir}\src\main\native</argument>
@ -965,7 +866,6 @@
                  <goal>exec</goal>
                </goals>
                <configuration>
-                  <skip>${skip.platformToolsetDetection}</skip>
                  <executable>msbuild</executable>
                  <arguments>
                    <argument>${basedir}/src/main/native/native.sln</argument>
@ -986,35 +886,6 @@
                  </arguments>
                </configuration>
              </execution>
-              <execution>
-                <id>compile-ms-native-dll-using-build-tools</id>
-                <phase>compile</phase>
-                <goals>
-                  <goal>exec</goal>
-                </goals>
-                <configuration>
-                  <skip>${skip.platformToolsetDetection.negated}</skip>
-                  <executable>msbuild</executable>
-                  <arguments>
-                    <argument>${basedir}/src/main/native/native.sln</argument>
-                    <argument>/nologo</argument>
-                    <argument>/p:Configuration=Release</argument>
-                    <argument>/p:OutDir=${project.build.directory}/bin/</argument>
-                    <argument>/p:CustomZstdPrefix=${zstd.prefix}</argument>
-                    <argument>/p:CustomZstdLib=${zstd.lib}</argument>
-                    <argument>/p:CustomZstdInclude=${zstd.include}</argument>
-                    <argument>/p:RequireZstd=${require.zstd}</argument>
-                    <argument>/p:CustomOpensslPrefix=${openssl.prefix}</argument>
-                    <argument>/p:CustomOpensslLib=${openssl.lib}</argument>
-                    <argument>/p:CustomOpensslInclude=${openssl.include}</argument>
-                    <argument>/p:RequireOpenssl=${require.openssl}</argument>
-                    <argument>/p:RequireIsal=${require.isal}</argument>
-                    <argument>/p:CustomIsalPrefix=${isal.prefix}</argument>
-                    <argument>/p:CustomIsalLib=${isal.lib}</argument>
-                    <argument>/p:PlatformToolset=${use.platformToolsetVersion}</argument>
-                  </arguments>
-                </configuration>
-              </execution>
            </executions>
          </plugin>
        </plugins>
@ -1247,7 +1118,7 @@
                <id>src-test-compile-protoc-legacy</id>
                <phase>generate-test-sources</phase>
                <goals>
-                  <goal>test-compile</goal>
+                  <goal>compile</goal>
                </goals>
                <configuration>
                  <skip>false</skip>
@ -1256,7 +1127,7 @@
                    com.google.protobuf:protoc:${protobuf.version}:exe:${os.detected.classifier}
                  </protocArtifact>
                  <includeDependenciesInDescriptorSet>false</includeDependenciesInDescriptorSet>
-                  <protoTestSourceRoot>${basedir}/src/test/proto</protoTestSourceRoot>
+                  <protoSourceRoot>${basedir}/src/test/proto</protoSourceRoot>
                  <outputDirectory>${project.build.directory}/generated-test-sources/java</outputDirectory>
                  <clearOutputDirectory>false</clearOutputDirectory>
                  <includes>
@ -1267,16 +1138,6 @@
              </execution>
             </executions>
          </plugin>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-javadoc-plugin</artifactId>
-            <configuration>
-              <sourceFileExcludes>
-                <sourceFileExclude>**/FSProtos.java</sourceFileExclude>
-              </sourceFileExcludes>
-              <excludePackageNames>*.proto:*.tracing:*.protobuf</excludePackageNames>
-            </configuration>
-          </plugin>
        </plugins>
      </build>
    </profile>
--- a/hadoop-common-project/hadoop-common/src/main/bin/hadoop
+++ b/hadoop-common-project/hadoop-common/src/main/bin/hadoop
@ -26,9 +26,9 @@ MYNAME="${BASH_SOURCE-$0}"
 function hadoop_usage
 {
  hadoop_add_option "buildpaths" "attempt to add class files from build tree"
-  hadoop_add_option "hostnames list[,of,host,names]" "hosts to use in worker mode"
+  hadoop_add_option "hostnames list[,of,host,names]" "hosts to use in slave mode"
  hadoop_add_option "loglevel level" "set the log4j level for this command"
-  hadoop_add_option "hosts filename" "list of hosts to use in worker mode"
+  hadoop_add_option "hosts filename" "list of hosts to use in slave mode"
  hadoop_add_option "workers" "turn on worker mode"

  hadoop_add_subcommand "checknative" client "check native Hadoop and compression libraries availability"
--- a/hadoop-common-project/hadoop-common/src/main/bin/hadoop-daemons.sh
+++ b/hadoop-common-project/hadoop-common/src/main/bin/hadoop-daemons.sh
@ -16,7 +16,7 @@
 # limitations under the License.


-# Run a Hadoop command on all worker hosts.
+# Run a Hadoop command on all slave hosts.

 function hadoop_usage
 {
--- a/hadoop-common-project/hadoop-common/src/main/conf/hadoop-env.sh
+++ b/hadoop-common-project/hadoop-common/src/main/conf/hadoop-env.sh
@ -53,10 +53,6 @@
 # variable is REQUIRED on ALL platforms except OS X!
 # export JAVA_HOME=

-# The language environment in which Hadoop runs. Use the English
-# environment to ensure that logs are printed as expected.
-export LANG=en_US.UTF-8
-
 # Location of Hadoop.  By default, Hadoop will attempt to determine
 # this location based upon its execution path.
 # export HADOOP_HOME=
--- a/hadoop-common-project/hadoop-common/src/main/conf/log4j.properties
+++ b/hadoop-common-project/hadoop-common/src/main/conf/log4j.properties
@ -75,6 +75,14 @@ log4j.appender.console.target=System.err
 log4j.appender.console.layout=org.apache.log4j.PatternLayout
 log4j.appender.console.layout.ConversionPattern=%d{ISO8601} %p %c{2}: %m%n

+#
+# TaskLog Appender
+#
+log4j.appender.TLA=org.apache.hadoop.mapred.TaskLogAppender
+
+log4j.appender.TLA.layout=org.apache.log4j.PatternLayout
+log4j.appender.TLA.layout.ConversionPattern=%d{ISO8601} %p %c: %m%n
+
 #
 # HDFS block state change log from block manager
 #
@ -243,45 +251,30 @@ log4j.appender.NMAUDIT.MaxBackupIndex=${nm.audit.log.maxbackupindex}
 #log4j.appender.HSAUDIT.DatePattern=.yyyy-MM-dd

 # Http Server Request Logs
-#log4j.appender.AccessNNDRFA=org.apache.log4j.DailyRollingFileAppender
-#log4j.appender.AccessNNDRFA.File=${hadoop.log.dir}/jetty-namenode.log
-#log4j.appender.AccessNNDRFA.DatePattern=.yyyy-MM-dd
-#log4j.appender.AccessNNDRFA.layout=org.apache.log4j.PatternLayout
-#log4j.appender.AccessNNDRFA.layout.ConversionPattern=%m%n
+#log4j.logger.http.requests.namenode=INFO,namenoderequestlog
+#log4j.appender.namenoderequestlog=org.apache.hadoop.http.HttpRequestLogAppender
+#log4j.appender.namenoderequestlog.Filename=${hadoop.log.dir}/jetty-namenode-yyyy_mm_dd.log
+#log4j.appender.namenoderequestlog.RetainDays=3

-#log4j.logger.http.requests.namenode=INFO,AccessNNDRFA
+#log4j.logger.http.requests.datanode=INFO,datanoderequestlog
+#log4j.appender.datanoderequestlog=org.apache.hadoop.http.HttpRequestLogAppender
+#log4j.appender.datanoderequestlog.Filename=${hadoop.log.dir}/jetty-datanode-yyyy_mm_dd.log
+#log4j.appender.datanoderequestlog.RetainDays=3

-#log4j.appender.AccessDNDRFA=org.apache.log4j.DailyRollingFileAppender
-#log4j.appender.AccessDNDRFA.File=${hadoop.log.dir}/jetty-datanode.log
-#log4j.appender.AccessDNDRFA.DatePattern=.yyyy-MM-dd
-#log4j.appender.AccessDNDRFA.layout=org.apache.log4j.PatternLayout
-#log4j.appender.AccessDNDRFA.layout.ConversionPattern=%m%n
+#log4j.logger.http.requests.resourcemanager=INFO,resourcemanagerrequestlog
+#log4j.appender.resourcemanagerrequestlog=org.apache.hadoop.http.HttpRequestLogAppender
+#log4j.appender.resourcemanagerrequestlog.Filename=${hadoop.log.dir}/jetty-resourcemanager-yyyy_mm_dd.log
+#log4j.appender.resourcemanagerrequestlog.RetainDays=3

-#log4j.logger.http.requests.datanode=INFO,AccessDNDRFA
+#log4j.logger.http.requests.jobhistory=INFO,jobhistoryrequestlog
+#log4j.appender.jobhistoryrequestlog=org.apache.hadoop.http.HttpRequestLogAppender
+#log4j.appender.jobhistoryrequestlog.Filename=${hadoop.log.dir}/jetty-jobhistory-yyyy_mm_dd.log
+#log4j.appender.jobhistoryrequestlog.RetainDays=3

-#log4j.appender.AccessRMDRFA=org.apache.log4j.DailyRollingFileAppender
-#log4j.appender.AccessRMDRFA.File=${hadoop.log.dir}/jetty-resourcemanager.log
-#log4j.appender.AccessRMDRFA.DatePattern=.yyyy-MM-dd
-#log4j.appender.AccessRMDRFA.layout=org.apache.log4j.PatternLayout
-#log4j.appender.AccessRMDRFA.layout.ConversionPattern=%m%n
-
-#log4j.logger.http.requests.resourcemanager=INFO,AccessRMDRFA
-
-#log4j.appender.AccessJHDRFA=org.apache.log4j.DailyRollingFileAppender
-#log4j.appender.AccessJHDRFA.File=${hadoop.log.dir}/jetty-jobhistory.log
-#log4j.appender.AccessJHDRFA.DatePattern=.yyyy-MM-dd
-#log4j.appender.AccessJHDRFA.layout=org.apache.log4j.PatternLayout
-#log4j.appender.AccessJHDRFA.layout.ConversionPattern=%m%n
-
-#log4j.logger.http.requests.jobhistory=INFO,AccessJHDRFA
-
-#log4j.appender.AccessNMDRFA=org.apache.log4j.DailyRollingFileAppender
-#log4j.appender.AccessNMDRFA.File=${hadoop.log.dir}/jetty-jobhistory.log
-#log4j.appender.AccessNMDRFA.DatePattern=.yyyy-MM-dd
-#log4j.appender.AccessNMDRFA.layout=org.apache.log4j.PatternLayout
-#log4j.appender.AccessNMDRFA.layout.ConversionPattern=%m%n
-
-#log4j.logger.http.requests.nodemanager=INFO,AccessNMDRFA
+#log4j.logger.http.requests.nodemanager=INFO,nodemanagerrequestlog
+#log4j.appender.nodemanagerrequestlog=org.apache.hadoop.http.HttpRequestLogAppender
+#log4j.appender.nodemanagerrequestlog.Filename=${hadoop.log.dir}/jetty-nodemanager-yyyy_mm_dd.log
+#log4j.appender.nodemanagerrequestlog.RetainDays=3

 # WebHdfs request log on datanodes
 # Specify -Ddatanode.webhdfs.logger=INFO,HTTPDRFA on datanode startup to
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ConfServlet.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ConfServlet.java
@ -98,7 +98,7 @@ public class ConfServlet extends HttpServlet {
    if (FORMAT_JSON.equals(format)) {
      Configuration.dumpConfiguration(conf, propertyName, out);
    } else if (FORMAT_XML.equals(format)) {
-      conf.writeXml(propertyName, out, conf);
+      conf.writeXml(propertyName, out);
    } else {
      throw new BadFormatException("Bad format: " + format);
    }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ConfigRedactor.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ConfigRedactor.java
@ -37,7 +37,6 @@ import org.apache.hadoop.util.StringUtils;
 public class ConfigRedactor {

  private static final String REDACTED_TEXT = "<redacted>";
-  private static final String REDACTED_XML = "******";

  private List<Pattern> compiledPatterns;

@ -58,8 +57,8 @@ public class ConfigRedactor {
   * Given a key / value pair, decides whether or not to redact and returns
   * either the original value or text indicating it has been redacted.
   *
-   * @param key param key.
-   * @param value param value, will return if conditions permit.
+   * @param key
+   * @param value
   * @return Original value, or text indicating it has been redacted
   */
  public String redact(String key, String value) {
@ -85,19 +84,4 @@ public class ConfigRedactor {
    }
    return false;
  }
-
-  /**
-   * Given a key / value pair, decides whether or not to redact and returns
-   * either the original value or text indicating it has been redacted.
-   *
-   * @param key param key.
-   * @param value param value, will return if conditions permit.
-   * @return Original value, or text indicating it has been redacted
-   */
-  public String redactXml(String key, String value) {
-    if (configIsSensitive(key)) {
-      return REDACTED_XML;
-    }
-    return value;
-  }
 }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java
@ -24,6 +24,7 @@ import com.ctc.wstx.io.SystemId;
 import com.ctc.wstx.stax.WstxInputFactory;
 import com.fasterxml.jackson.core.JsonFactory;
 import com.fasterxml.jackson.core.JsonGenerator;
+import org.apache.hadoop.classification.VisibleForTesting;

 import java.io.BufferedInputStream;
 import java.io.DataInput;
@ -86,7 +87,6 @@ import org.apache.hadoop.thirdparty.com.google.common.base.Charsets;
 import org.apache.commons.collections.map.UnmodifiableMap;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
-import org.apache.hadoop.classification.VisibleForTesting;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@ -98,19 +98,18 @@ import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.alias.CredentialProvider;
 import org.apache.hadoop.security.alias.CredentialProvider.CredentialEntry;
 import org.apache.hadoop.security.alias.CredentialProviderFactory;
-import org.apache.hadoop.thirdparty.com.google.common.base.Strings;
-import org.apache.hadoop.util.Preconditions;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.StringInterner;
 import org.apache.hadoop.util.StringUtils;
-import org.apache.hadoop.util.XMLUtils;
-
 import org.codehaus.stax2.XMLStreamReader2;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;

+import org.apache.hadoop.util.Preconditions;
+import org.apache.hadoop.thirdparty.com.google.common.base.Strings;
+
 import static org.apache.commons.lang3.StringUtils.isBlank;
 import static org.apache.commons.lang3.StringUtils.isNotBlank;

@ -318,7 +317,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
  private boolean loadDefaults = true;

  /**
-   * Configuration objects.
+   * Configuration objects
   */
  private static final WeakHashMap<Configuration,Object> REGISTRY = 
    new WeakHashMap<Configuration,Object>();
@ -775,7 +774,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
  private void handleDeprecation() {
    LOG.debug("Handling deprecation for all properties in config...");
    DeprecationContext deprecations = deprecationContext.get();
-    Set<Object> keys = new HashSet<>();
+    Set<Object> keys = new HashSet<Object>();
    keys.addAll(getProps().keySet());
    for (Object item: keys) {
      LOG.debug("Handling deprecation for " + (String)item);
@ -1909,7 +1908,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param name Property name
   * @param vStr The string value with time unit suffix to be converted.
   * @param unit Unit to convert the stored property, if it exists.
-   * @return time duration in given time unit.
   */
  public long getTimeDurationHelper(String name, String vStr, TimeUnit unit) {
    return getTimeDurationHelper(name, vStr, unit, unit);
@ -1924,7 +1922,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param vStr The string value with time unit suffix to be converted.
   * @param defaultUnit Unit to convert the stored property, if it exists.
   * @param returnUnit Unit for the returned value.
-   * @return time duration in given time unit.
   */
  private long getTimeDurationHelper(String name, String vStr,
      TimeUnit defaultUnit, TimeUnit returnUnit) {
@ -2209,7 +2206,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
    }

    /**
-     * Is the given value in the set of ranges.
+     * Is the given value in the set of ranges
     * @param value the value to check
     * @return is the value in the ranges?
     */
@ -2266,7 +2263,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
  }

  /**
-   * Parse the given attribute as a set of integer ranges.
+   * Parse the given attribute as a set of integer ranges
   * @param name the attribute name
   * @param defaultValue the default value if it is not set
   * @return a new set of ranges from the configured value
@ -2485,7 +2482,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,

  /**
   * Fallback to clear text passwords in configuration.
-   * @param name the property name.
+   * @param name
   * @return clear text password or null
   */
  protected char[] getPasswordFromConfig(String name) {
@ -2550,8 +2547,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
  /**
   * Set the socket address for the <code>name</code> property as
   * a <code>host:port</code>.
-   * @param name property name.
-   * @param addr inetSocketAddress addr.
   */
  public void setSocketAddr(String name, InetSocketAddress addr) {
    set(name, NetUtils.getHostPortString(addr));
@ -2729,7 +2724,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param name the conf key name.
   * @param defaultValue default value.
   * @param xface the interface implemented by the named class.
-   * @param <U> Interface class type.
   * @return property value as a <code>Class</code>, 
   *         or <code>defaultValue</code>.
   */
@ -2759,7 +2753,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param name the property name.
   * @param xface the interface implemented by the classes named by
   *        <code>name</code>.
-   * @param <U> Interface class type.
   * @return a <code>List</code> of objects implementing <code>xface</code>.
   */
  @SuppressWarnings("unchecked")
@ -2801,7 +2794,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param dirsProp directory in which to locate the file.
   * @param path file-path.
   * @return local file under the directory with the given path.
-   * @throws IOException raised on errors performing I/O.
   */
  public Path getLocalPath(String dirsProp, String path)
    throws IOException {
@ -2834,7 +2826,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param dirsProp directory in which to locate the file.
   * @param path file-path.
   * @return local file under the directory with the given path.
-   * @throws IOException raised on errors performing I/O.
   */
  public File getFile(String dirsProp, String path)
    throws IOException {
@ -2987,15 +2978,13 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
    // methods that allow non-strings to be put into configurations are removed,
    // we could replace properties with a Map<String,String> and get rid of this
    // code.
-    Properties props = getProps();
-    Map<String, String> result = new HashMap<>();
-    synchronized (props) {
-      for (Map.Entry<Object, Object> item : props.entrySet()) {
-        if (item.getKey() instanceof String && item.getValue() instanceof String) {
+    Map<String,String> result = new HashMap<String,String>();
+    for(Map.Entry<Object,Object> item: getProps().entrySet()) {
+      if (item.getKey() instanceof String &&
+          item.getValue() instanceof String) {
          result.put((String) item.getKey(), (String) item.getValue());
      }
    }
-    }
    return result.entrySet().iterator();
  }

@ -3446,7 +3435,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,

  /**
   * Add tags defined in HADOOP_TAGS_SYSTEM, HADOOP_TAGS_CUSTOM.
-   * @param prop properties.
+   * @param prop
   */
  public void addTags(Properties prop) {
    // Get all system tags
@ -3547,7 +3536,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,

  /**
   * Print a warning if a property with a given name already exists with a
-   * different value.
+   * different value
   */
  private void checkForOverride(Properties properties, String name, String attr, String value) {
    String propertyValue = properties.getProperty(attr);
@ -3562,7 +3551,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * {@link OutputStream} using UTF-8 encoding.
   * 
   * @param out the output stream to write to.
-   * @throws IOException raised on errors performing I/O.
   */
  public void writeXml(OutputStream out) throws IOException {
    writeXml(new OutputStreamWriter(out, "UTF-8"));
@ -3592,20 +3580,16 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * the configuration, this method throws an {@link IllegalArgumentException}.
   * </li>
   * </ul>
-   * @param propertyName xml property name.
   * @param out the writer to write to.
-   * @param config configuration.
-   * @throws IOException raised on errors performing I/O.
   */
-  public void writeXml(@Nullable String propertyName, Writer out, Configuration config)
+  public void writeXml(@Nullable String propertyName, Writer out)
      throws IOException, IllegalArgumentException {
-    ConfigRedactor redactor = config != null ? new ConfigRedactor(this) : null;
-    Document doc = asXmlDocument(propertyName, redactor);
+    Document doc = asXmlDocument(propertyName);

    try {
      DOMSource source = new DOMSource(doc);
      StreamResult result = new StreamResult(out);
-      TransformerFactory transFactory = XMLUtils.newSecureTransformerFactory();
+      TransformerFactory transFactory = TransformerFactory.newInstance();
      Transformer transformer = transFactory.newTransformer();

      // Important to not hold Configuration log while writing result, since
@ -3617,16 +3601,11 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
    }
  }

-  public void writeXml(@Nullable String propertyName, Writer out)
-      throws IOException, IllegalArgumentException {
-    writeXml(propertyName, out, null);
-  }
-
  /**
   * Return the XML DOM corresponding to this Configuration.
   */
-  private synchronized Document asXmlDocument(@Nullable String propertyName,
-      ConfigRedactor redactor) throws IOException, IllegalArgumentException {
+  private synchronized Document asXmlDocument(@Nullable String propertyName)
+      throws IOException, IllegalArgumentException {
    Document doc;
    try {
      doc = DocumentBuilderFactory
@ -3649,13 +3628,13 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
            propertyName + " not found");
      } else {
        // given property is found, write single property
-        appendXMLProperty(doc, conf, propertyName, redactor);
+        appendXMLProperty(doc, conf, propertyName);
        conf.appendChild(doc.createTextNode("\n"));
      }
    } else {
      // append all elements
      for (Enumeration<Object> e = properties.keys(); e.hasMoreElements();) {
-        appendXMLProperty(doc, conf, (String)e.nextElement(), redactor);
+        appendXMLProperty(doc, conf, (String)e.nextElement());
        conf.appendChild(doc.createTextNode("\n"));
      }
    }
@ -3671,7 +3650,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param propertyName
   */
  private synchronized void appendXMLProperty(Document doc, Element conf,
-      String propertyName, ConfigRedactor redactor) {
+      String propertyName) {
    // skip writing if given property name is empty or null
    if (!Strings.isNullOrEmpty(propertyName)) {
      String value = properties.getProperty(propertyName);
@ -3684,11 +3663,8 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
        propNode.appendChild(nameNode);

        Element valueNode = doc.createElement("value");
-        String propertyValue = properties.getProperty(propertyName);
-        if (redactor != null) {
-          propertyValue = redactor.redactXml(propertyName, propertyValue);
-        }
-        valueNode.appendChild(doc.createTextNode(propertyValue));
+        valueNode.appendChild(doc.createTextNode(
+            properties.getProperty(propertyName)));
        propNode.appendChild(valueNode);

        Element finalNode = doc.createElement("final");
@ -3758,7 +3734,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param config the configuration
   * @param propertyName property name
   * @param out the Writer to write to
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   * @throws IllegalArgumentException when property name is not
   *   empty and the property is not found in configuration
   **/
@ -3805,7 +3781,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   *
   * @param config the configuration
   * @param out the Writer to write to
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public static void dumpConfiguration(Configuration config,
      Writer out) throws IOException {
@ -3834,7 +3810,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
   * @param jsonGen json writer
   * @param config configuration
   * @param name property name
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  private static void appendJSONProperty(JsonGenerator jsonGen,
      Configuration config, String name, ConfigRedactor redactor)
@ -3916,10 +3892,7 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
    return this.quietmode;
  }
  
-  /** For debugging.  List non-default properties to the terminal and exit.
-   * @param args the argument to be parsed.
-   * @throws Exception exception.
-   */
+  /** For debugging.  List non-default properties to the terminal and exit. */
  public static void main(String[] args) throws Exception {
    new Configuration().writeXml(System.out);
  }
@ -3953,8 +3926,8 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
  }
  
  /**
-   * get keys matching the the regex.
-   * @param regex the regex to match against.
+   * get keys matching the the regex 
+   * @param regex
   * @return {@literal Map<String,String>} with matching keys
   */
  public Map<String,String> getValByRegex(String regex) {
@ -3999,8 +3972,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
  /**
   * Returns whether or not a deprecated name has been warned. If the name is not
   * deprecated then always return false
-   * @param name proprties.
-   * @return true if name is a warned deprecation.
   */
  public static boolean hasWarnedDeprecation(String name) {
    DeprecationContext deprecations = deprecationContext.get();
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configured.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configured.java
@ -33,9 +33,7 @@ public class Configured implements Configurable {
    this(null);
  }
  
-  /** Construct a Configured.
-   * @param conf the Configuration object.
-   */
+  /** Construct a Configured. */
  public Configured(Configuration conf) {
    setConf(conf);
  }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Reconfigurable.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Reconfigurable.java
@ -33,9 +33,6 @@ public interface Reconfigurable extends Configurable {
   * (or null if it was not previously set). If newVal is null, set the property
   * to its default value;
   *
-   * @param property property name.
-   * @param newVal new value.
-   * @throws ReconfigurationException if there was an error applying newVal.
   * If the property cannot be changed, throw a 
   * {@link ReconfigurationException}.
   */
@ -48,14 +45,11 @@ public interface Reconfigurable extends Configurable {
   * If isPropertyReconfigurable returns true for a property,
   * then changeConf should not throw an exception when changing
   * this property.
-   * @param property property name.
-   * @return true if property reconfigurable; false if not.
   */
  boolean isPropertyReconfigurable(String property);

  /**
   * Return all the properties that can be changed at run time.
-   * @return reconfigurable propertys.
   */
  Collection<String> getReconfigurableProperties();
 }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ReconfigurableBase.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ReconfigurableBase.java
@ -79,7 +79,6 @@ public abstract class ReconfigurableBase
  /**
   * Construct a ReconfigurableBase with the {@link Configuration}
   * conf.
-   * @param conf configuration.
   */
  public ReconfigurableBase(Configuration conf) {
    super((conf == null) ? new Configuration() : conf);
@ -92,7 +91,6 @@ public abstract class ReconfigurableBase

  /**
   * Create a new configuration.
-   * @return configuration.
   */
  protected abstract Configuration getNewConf();

@ -164,7 +162,6 @@ public abstract class ReconfigurableBase

  /**
   * Start a reconfiguration task to reload configuration in background.
-   * @throws IOException raised on errors performing I/O.
   */
  public void startReconfigurationTask() throws IOException {
    synchronized (reconfigLock) {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ReconfigurationException.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ReconfigurationException.java
@ -59,10 +59,6 @@ public class ReconfigurationException extends Exception {

  /**
   * Create a new instance of {@link ReconfigurationException}.
-   * @param property property name.
-   * @param newVal new value.
-   * @param oldVal old value.
-   * @param cause original exception.
   */
  public ReconfigurationException(String property, 
                                  String newVal, String oldVal,
@ -75,9 +71,6 @@ public class ReconfigurationException extends Exception {

  /**
   * Create a new instance of {@link ReconfigurationException}.
-   * @param property property name.
-   * @param newVal new value.
-   * @param oldVal old value.
   */
  public ReconfigurationException(String property, 
                                  String newVal, String oldVal) {
@ -89,7 +82,6 @@ public class ReconfigurationException extends Exception {

  /**
   * Get property that cannot be changed.
-   * @return property info.
   */
  public String getProperty() {
    return property;
@ -97,7 +89,6 @@ public class ReconfigurationException extends Exception {

  /**
   * Get value to which property was supposed to be changed.
-   * @return new value.
   */
  public String getNewValue() {
    return newVal;
@ -105,7 +96,6 @@ public class ReconfigurationException extends Exception {

  /**
   * Get old value of property that cannot be changed.
-   * @return old value.
   */
  public String getOldValue() {
    return oldVal;
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ReconfigurationTaskStatus.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ReconfigurationTaskStatus.java
@ -42,8 +42,7 @@ public class ReconfigurationTaskStatus {
  /**
   * Return true if
   *   - A reconfiguration task has finished or
-   *   - an active reconfiguration task is running.
-   * @return true if startTime &gt; 0; false if not.
+   *   - an active reconfiguration task is running
   */
  public boolean hasTask() {
    return startTime > 0;
@ -52,7 +51,6 @@ public class ReconfigurationTaskStatus {
  /**
   * Return true if the latest reconfiguration task has finished and there is
   * no another active task running.
-   * @return true if endTime &gt; 0; false if not.
   */
  public boolean stopped() {
    return endTime > 0;
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoCodec.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoCodec.java
@ -146,17 +146,13 @@ public abstract class CryptoCodec implements Configurable, Closeable {

  /**
   * Create a {@link org.apache.hadoop.crypto.Encryptor}. 
-   *
-   * @return Encryptor the encryptor.
-   * @throws GeneralSecurityException thrown if create encryptor error.
+   * @return Encryptor the encryptor
   */
  public abstract Encryptor createEncryptor() throws GeneralSecurityException;
  
  /**
   * Create a {@link org.apache.hadoop.crypto.Decryptor}.
-   *
   * @return Decryptor the decryptor
-   * @throws GeneralSecurityException thrown if create decryptor error.
   */
  public abstract Decryptor createDecryptor() throws GeneralSecurityException;
  
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoInputStream.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoInputStream.java
@ -157,7 +157,7 @@ public class CryptoInputStream extends FilterInputStream implements
   * @param off the buffer offset.
   * @param len the maximum number of decrypted data bytes to read.
   * @return int the total number of decrypted data bytes read into the buffer.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  @Override
  public int read(byte[] b, int off, int len) throws IOException {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoOutputStream.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoOutputStream.java
@ -146,7 +146,7 @@ public class CryptoOutputStream extends FilterOutputStream implements
   * @param b the data.
   * @param off the start offset in the data.
   * @param len the number of bytes to write.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  @Override
  public synchronized void write(byte[] b, int off, int len) throws IOException {
@ -240,16 +240,13 @@ public class CryptoOutputStream extends FilterOutputStream implements
    if (closed) {
      return;
    }
-    try {
    try {
      flush();
-      } finally {
      if (closeOutputStream) {
        super.close();
        codec.close();
      }
      freeBuffers();
-      }
    } finally {
      closed = true;
    }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoStreamUtils.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoStreamUtils.java
@ -39,11 +39,7 @@ public class CryptoStreamUtils {
  private static final Logger LOG =
      LoggerFactory.getLogger(CryptoStreamUtils.class);

-  /**
-   * Forcibly free the direct buffer.
-   *
-   * @param buffer buffer.
-   */
+  /** Forcibly free the direct buffer. */
  public static void freeDB(ByteBuffer buffer) {
    if (CleanerUtil.UNMAP_SUPPORTED) {
      try {
@ -56,22 +52,13 @@ public class CryptoStreamUtils {
    }
  }

-  /**
-   * Read crypto buffer size.
-   *
-   * @param conf configuration.
-   * @return hadoop.security.crypto.buffer.size.
-   */
+  /** Read crypto buffer size */
  public static int getBufferSize(Configuration conf) {
    return conf.getInt(HADOOP_SECURITY_CRYPTO_BUFFER_SIZE_KEY, 
        HADOOP_SECURITY_CRYPTO_BUFFER_SIZE_DEFAULT);
  }
  
-  /**
-   * AES/CTR/NoPadding or SM4/CTR/NoPadding is required.
-   *
-   * @param codec crypto codec.
-   */
+  /** AES/CTR/NoPadding or SM4/CTR/NoPadding is required. */
  public static void checkCodec(CryptoCodec codec) {
    if (codec.getCipherSuite() != CipherSuite.AES_CTR_NOPADDING &&
            codec.getCipherSuite() != CipherSuite.SM4_CTR_NOPADDING) {
@ -80,13 +67,7 @@ public class CryptoStreamUtils {
    }
  }

-  /**
-   * Check and floor buffer size.
-   *
-   * @param codec crypto codec.
-   * @param bufferSize the size of the buffer to be used.
-   * @return calc buffer size.
-   */
+  /** Check and floor buffer size */
  public static int checkBufferSize(CryptoCodec codec, int bufferSize) {
    Preconditions.checkArgument(bufferSize >= MIN_BUFFER_SIZE, 
        "Minimum value of buffer size is " + MIN_BUFFER_SIZE + ".");
@ -97,10 +78,6 @@ public class CryptoStreamUtils {
  /**
   * If input stream is {@link org.apache.hadoop.fs.Seekable}, return it's
   * current position, otherwise return 0;
-   *
-   * @param in wrapper.
-   * @return current position, otherwise return 0.
-   * @throws IOException raised on errors performing I/O.
   */
  public static long getInputStreamOffset(InputStream in) throws IOException {
    if (in instanceof Seekable) {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/OpensslCipher.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/OpensslCipher.java
@ -230,28 +230,29 @@ public final class OpensslCipher {
   * Finishes a multiple-part operation. The data is encrypted or decrypted,
   * depending on how this cipher was initialized.
   * <p>
+   * 
   * The result is stored in the output buffer. Upon return, the output buffer's
   * position will have advanced by n, where n is the value returned by this
   * method; the output buffer's limit will not have changed.
-   * </p>
+   * <p>
+   * 
   * If <code>output.remaining()</code> bytes are insufficient to hold the result,
   * a <code>ShortBufferException</code> is thrown.
   * <p>
+   * 
   * Upon finishing, this method resets this cipher object to the state it was
   * in when previously initialized. That is, the object is available to encrypt
   * or decrypt more data.
-   * </p>
+   * <p>
+   * 
   * If any exception is thrown, this cipher object need to be reset before it 
   * can be used again.
   * 
   * @param output the output ByteBuffer
   * @return int number of bytes stored in <code>output</code>
-   * @throws ShortBufferException      if there is insufficient space in the output buffer.
-   * @throws IllegalBlockSizeException This exception is thrown when the length
-   *                                   of data provided to a block cipher is incorrect.
-   * @throws BadPaddingException       This exception is thrown when a particular
-   *                                   padding mechanism is expected for the input
-   *                                   data but the data is not padded properly.
+   * @throws ShortBufferException
+   * @throws IllegalBlockSizeException
+   * @throws BadPaddingException
   */
  public int doFinal(ByteBuffer output) throws ShortBufferException, 
      IllegalBlockSizeException, BadPaddingException {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProvider.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProvider.java
@ -242,7 +242,7 @@ public abstract class KeyProvider implements Closeable {
    /**
     * Serialize the metadata to a set of bytes.
     * @return the serialized bytes
-     * @throws IOException raised on errors performing I/O.
+     * @throws IOException
     */
    protected byte[] serialize() throws IOException {
      ByteArrayOutputStream buffer = new ByteArrayOutputStream();
@ -281,7 +281,7 @@ public abstract class KeyProvider implements Closeable {
    /**
     * Deserialize a new metadata object from a set of bytes.
     * @param bytes the serialized metadata
-     * @throws IOException raised on errors performing I/O.
+     * @throws IOException
     */
    protected Metadata(byte[] bytes) throws IOException {
      String cipher = null;
@ -450,7 +450,7 @@ public abstract class KeyProvider implements Closeable {
   * when decrypting data.
   * @param versionName the name of a specific version of the key
   * @return the key material
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract KeyVersion getKeyVersion(String versionName
                                            ) throws IOException;
@ -458,15 +458,14 @@ public abstract class KeyProvider implements Closeable {
  /**
   * Get the key names for all keys.
   * @return the list of key names
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract List<String> getKeys() throws IOException;

  /**
   * Get key metadata in bulk.
   * @param names the names of the keys to get
-   * @throws IOException raised on errors performing I/O.
-   * @return Metadata Array.
+   * @throws IOException
   */
  public Metadata[] getKeysMetadata(String... names) throws IOException {
    Metadata[] result = new Metadata[names.length];
@ -478,10 +477,8 @@ public abstract class KeyProvider implements Closeable {

  /**
   * Get the key material for all versions of a specific key name.
-   *
-   * @param name the base name of the key.
   * @return the list of key material
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract List<KeyVersion> getKeyVersions(String name) throws IOException;

@ -491,7 +488,7 @@ public abstract class KeyProvider implements Closeable {
   * @param name the base name of the key
   * @return the version name of the current version of the key or null if the
   *    key version doesn't exist
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public KeyVersion getCurrentKey(String name) throws IOException {
    Metadata meta = getMetadata(name);
@ -505,7 +502,7 @@ public abstract class KeyProvider implements Closeable {
   * Get metadata about the key.
   * @param name the basename of the key
   * @return the key's metadata or null if the key doesn't exist
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract Metadata getMetadata(String name) throws IOException;

@ -515,7 +512,7 @@ public abstract class KeyProvider implements Closeable {
   * @param material the key material for the first version of the key.
   * @param options the options for the new key.
   * @return the version name of the first version of the key.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract KeyVersion createKey(String name, byte[] material,
                                       Options options) throws IOException;
@ -540,7 +537,7 @@ public abstract class KeyProvider implements Closeable {
   * @param size length of the key.
   * @param algorithm algorithm to use for generating the key.
   * @return the generated key.
-   * @throws NoSuchAlgorithmException no such algorithm exception.
+   * @throws NoSuchAlgorithmException
   */
  protected byte[] generateKey(int size, String algorithm)
      throws NoSuchAlgorithmException {
@ -561,8 +558,8 @@ public abstract class KeyProvider implements Closeable {
   * @param name the base name of the key
   * @param options the options for the new key.
   * @return the version name of the first version of the key.
-   * @throws IOException raised on errors performing I/O.
-   * @throws NoSuchAlgorithmException no such algorithm exception.
+   * @throws IOException
+   * @throws NoSuchAlgorithmException
   */
  public KeyVersion createKey(String name, Options options)
      throws NoSuchAlgorithmException, IOException {
@ -573,7 +570,7 @@ public abstract class KeyProvider implements Closeable {
  /**
   * Delete the given key.
   * @param name the name of the key to delete
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract void deleteKey(String name) throws IOException;

@ -582,7 +579,7 @@ public abstract class KeyProvider implements Closeable {
   * @param name the basename of the key
   * @param material the new key material
   * @return the name of the new version of the key
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract KeyVersion rollNewVersion(String name,
                                             byte[] material
@ -604,10 +601,7 @@ public abstract class KeyProvider implements Closeable {
   *
   * @param name the basename of the key
   * @return the name of the new version of the key
-   * @throws IOException              raised on errors performing I/O.
-   * @throws NoSuchAlgorithmException This exception is thrown when a particular
-   *                                  cryptographic algorithm is requested
-   *                                  but is not available in the environment.
+   * @throws IOException
   */
  public KeyVersion rollNewVersion(String name) throws NoSuchAlgorithmException,
                                                       IOException {
@ -626,7 +620,7 @@ public abstract class KeyProvider implements Closeable {
   * version of the given key.
   *
   * @param name the basename of the key
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public void invalidateCache(String name) throws IOException {
    // NOP
@ -634,19 +628,18 @@ public abstract class KeyProvider implements Closeable {

  /**
   * Ensures that any changes to the keys are written to persistent store.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public abstract void flush() throws IOException;

  /**
-   * Split the versionName in to a base name. Converts "/aaa/bbb@3" to
+   * Split the versionName in to a base name. Converts "/aaa/bbb/3" to
   * "/aaa/bbb".
   * @param versionName the version name to split
   * @return the base name of the key
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public static String getBaseName(String versionName) throws IOException {
-    Objects.requireNonNull(versionName, "VersionName cannot be null");
    int div = versionName.lastIndexOf('@');
    if (div == -1) {
      throw new IOException("No version in key path " + versionName);
@ -667,11 +660,9 @@ public abstract class KeyProvider implements Closeable {

  /**
   * Find the provider with the given key.
-   *
   * @param providerList the list of providers
-   * @param keyName the key name we are looking for.
+   * @param keyName the key name we are looking for
   * @return the KeyProvider that has the key
-   * @throws IOException raised on errors performing I/O.
   */
  public static KeyProvider findProvider(List<KeyProvider> providerList,
                                         String keyName) throws IOException {
@ -689,7 +680,7 @@ public abstract class KeyProvider implements Closeable {
   * means. If true, the password should be provided by the caller using
   * setPassword().
   * @return Whether or not the provider requires a password
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public boolean needsPassword() throws IOException {
    return false;
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProviderCryptoExtension.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProviderCryptoExtension.java
@ -25,6 +25,10 @@ import java.security.SecureRandom;
 import java.util.List;
 import java.util.ListIterator;

+import javax.crypto.Cipher;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+
 import org.apache.hadoop.util.Preconditions;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.crypto.CryptoCodec;
@ -174,7 +178,6 @@ public class KeyProviderCryptoExtension extends
     * Calls to this method allows the underlying KeyProvider to warm-up any
     * implementation specific caches used to store the Encrypted Keys.
     * @param keyNames Array of Key Names
-     * @throws IOException thrown if the key material could not be encrypted.
     */
    public void warmUpEncryptedKeys(String... keyNames)
        throws IOException;
@ -471,9 +474,8 @@ public class KeyProviderCryptoExtension extends
  /**
   * This constructor is to be used by sub classes that provide
   * delegating/proxying functionality to the {@link KeyProviderCryptoExtension}
-   *
-   * @param keyProvider key provider.
-   * @param extension crypto extension.
+   * @param keyProvider
+   * @param extension
   */
  protected KeyProviderCryptoExtension(KeyProvider keyProvider,
      CryptoExtension extension) {
@ -484,7 +486,6 @@ public class KeyProviderCryptoExtension extends
   * Notifies the Underlying CryptoExtension implementation to warm up any
   * implementation specific caches for the specified KeyVersions
   * @param keyNames Arrays of key Names
-   * @throws IOException raised on errors performing I/O.
   */
  public void warmUpEncryptedKeys(String... keyNames)
      throws IOException {
@ -556,7 +557,7 @@ public class KeyProviderCryptoExtension extends
   * Calls {@link CryptoExtension#drain(String)} for the given key name on the
   * underlying {@link CryptoExtension}.
   *
-   * @param keyName key name.
+   * @param keyName
   */
  public void drain(String keyName) {
    getExtension().drain(keyName);
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProviderDelegationTokenExtension.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProviderDelegationTokenExtension.java
@ -48,14 +48,14 @@ public class KeyProviderDelegationTokenExtension extends
     * Renews the given token.
     * @param token The token to be renewed.
     * @return The token's lifetime after renewal, or 0 if it can't be renewed.
-     * @throws IOException raised on errors performing I/O.
+     * @throws IOException
     */
    long renewDelegationToken(final Token<?> token) throws IOException;

    /**
     * Cancels the given token.
     * @param token The token to be cancelled.
-     * @throws IOException raised on errors performing I/O.
+     * @throws IOException
     */
    Void cancelDelegationToken(final Token<?> token) throws IOException;

--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyShell.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyShell.java
@ -75,7 +75,7 @@ public class KeyShell extends CommandShell {
   * </pre>
   * @param args Command line arguments.
   * @return 0 on success, 1 on failure.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  @Override
  protected int init(String[] args) throws IOException {
@ -547,7 +547,7 @@ public class KeyShell extends CommandShell {
   * success and 1 for failure.
   *
   * @param args Command line arguments.
-   * @throws Exception raised on errors performing I/O.
+   * @throws Exception
   */
  public static void main(String[] args) throws Exception {
    int res = ToolRunner.run(new Configuration(), new KeyShell(), args);
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/LoadBalancingKMSClientProvider.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/LoadBalancingKMSClientProvider.java
@ -21,7 +21,6 @@ package org.apache.hadoop.crypto.key.kms;
 import java.io.IOException;
 import java.io.InterruptedIOException;
 import java.net.ConnectException;
-import java.net.SocketException;
 import java.net.URI;
 import java.security.GeneralSecurityException;
 import java.security.NoSuchAlgorithmException;
@ -30,7 +29,7 @@ import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;

-import javax.net.ssl.SSLException;
+import javax.net.ssl.SSLHandshakeException;

 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.crypto.key.KeyProvider;
@ -183,10 +182,10 @@ public class LoadBalancingKMSClientProvider extends KeyProvider implements
      } catch (IOException ioe) {
        LOG.warn("KMS provider at [{}] threw an IOException: ",
            provider.getKMSUrl(), ioe);
-        // SSLException can occur here because of lost connection
+        // SSLHandshakeException can occur here because of lost connection
        // with the KMS server, creating a ConnectException from it,
        // so that the FailoverOnNetworkExceptionRetry policy will retry
-        if (ioe instanceof SSLException || ioe instanceof SocketException) {
+        if (ioe instanceof SSLHandshakeException) {
          Exception cause = ioe;
          ioe = new ConnectException("SSLHandshakeException: "
              + cause.getMessage());
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/ValueQueue.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/ValueQueue.java
@ -63,7 +63,7 @@ public class ValueQueue <E> {
     * @param keyName Key name
     * @param keyQueue Queue that needs to be filled
     * @param numValues number of Values to be added to the queue.
-     * @throws IOException raised on errors performing I/O.
+     * @throws IOException
     */
    public void fillQueueForKey(String keyName,
        Queue<E> keyQueue, int numValues) throws IOException;
@ -268,7 +268,7 @@ public class ValueQueue <E> {
   * Initializes the Value Queues for the provided keys by calling the
   * fill Method with "numInitValues" values
   * @param keyNames Array of key Names
-   * @throws ExecutionException executionException.
+   * @throws ExecutionException
   */
  public void initializeQueuesForKeys(String... keyNames)
      throws ExecutionException {
@ -285,8 +285,8 @@ public class ValueQueue <E> {
   * function to add 1 value to Queue and then drain it.
   * @param keyName String key name
   * @return E the next value in the Queue
-   * @throws IOException raised on errors performing I/O.
-   * @throws ExecutionException executionException.
+   * @throws IOException
+   * @throws ExecutionException
   */
  public E getNext(String keyName)
      throws IOException, ExecutionException {
@ -344,8 +344,8 @@ public class ValueQueue <E> {
   * @param keyName String key name
   * @param num Minimum number of values to return.
   * @return {@literal List<E>} values returned
-   * @throws IOException raised on errors performing I/O.
-   * @throws ExecutionException execution exception.
+   * @throws IOException
+   * @throws ExecutionException
   */
  public List<E> getAtMost(String keyName, int num) throws IOException,
      ExecutionException {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/AbstractFileSystem.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/AbstractFileSystem.java
@ -272,7 +272,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param supportedScheme the scheme supported by the implementor
   * @param authorityNeeded if true then theURI must have authority, if false
   *          then the URI must have null authority.
-   * @param defaultPort default port to use if port is not specified in the URI.
+   *
   * @throws URISyntaxException <code>uri</code> has syntax error
   */
  public AbstractFileSystem(final URI uri, final String supportedScheme,
@ -283,10 +283,9 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  }
  
  /**
-   * Check that the Uri's scheme matches.
-   *
-   * @param uri name URI of the FS.
-   * @param supportedScheme supported scheme.
+   * Check that the Uri's scheme matches
+   * @param uri
+   * @param supportedScheme
   */
  public void checkScheme(URI uri, String supportedScheme) {
    String scheme = uri.getScheme();
@ -363,7 +362,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * If the path is fully qualified URI, then its scheme and authority
   * matches that of this file system. Otherwise the path must be 
   * slash-relative name.
-   * @param path the path.
+   * 
   * @throws InvalidPathException if the path is invalid
   */
  public void checkPath(Path path) {
@ -432,7 +431,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  
  /**
   * Make the path fully qualified to this file system
-   * @param path the path.
+   * @param path
   * @return the qualified path
   */
  public Path makeQualified(Path path) {
@ -497,9 +496,9 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * through any internal symlinks or mount point
   * @param p path to be resolved
   * @return fully qualified path 
-   * @throws FileNotFoundException when file not find throw.
-   * @throws AccessControlException when accees control error throw.
-   * @throws IOException raised on errors performing I/O.
+   * @throws FileNotFoundException
+   * @throws AccessControlException
+   * @throws IOException
   * @throws UnresolvedLinkException if symbolic link on path cannot be
   * resolved internally
   */
@ -514,18 +513,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * {@link FileContext#create(Path, EnumSet, Options.CreateOpts...)} except
   * that the Path f must be fully qualified and the permission is absolute
   * (i.e. umask has been applied).
-   *
-   * @param f the path.
-   * @param createFlag create_flag.
-   * @param opts create ops.
-   * @throws AccessControlException access controll exception.
-   * @throws FileAlreadyExistsException file already exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws ParentNotDirectoryException parent not dir exception.
-   * @throws UnsupportedFileSystemException unsupported file system exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return output stream.
   */
  public final FSDataOutputStream create(final Path f,
      final EnumSet<CreateFlag> createFlag, Options.CreateOpts... opts)
@ -643,24 +630,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link #create(Path, EnumSet, Options.CreateOpts...)} except that the opts
   * have been declared explicitly.
-   *
-   * @param f the path.
-   * @param flag create flag.
-   * @param absolutePermission absolute permission.
-   * @param bufferSize buffer size.
-   * @param replication replications.
-   * @param blockSize block size.
-   * @param progress progress.
-   * @param checksumOpt check sum opt.
-   * @param createParent create parent.
-   * @throws AccessControlException access control exception.
-   * @throws FileAlreadyExistsException file already exists exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws ParentNotDirectoryException parent not directory exception.
-   * @throws UnsupportedFileSystemException unsupported filesystem exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return output stream.
   */
  public abstract FSDataOutputStream createInternal(Path f,
      EnumSet<CreateFlag> flag, FsPermission absolutePermission,
@ -675,14 +644,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * {@link FileContext#mkdir(Path, FsPermission, boolean)} except that the Path
   * f must be fully qualified and the permission is absolute (i.e. 
   * umask has been applied).
-   * @param dir directory.
-   * @param permission permission.
-   * @param createParent create parent flag.
-   * @throws AccessControlException access control exception.
-   * @throws FileAlreadyExistsException file already exists exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public abstract void mkdir(final Path dir, final FsPermission permission,
      final boolean createParent) throws AccessControlException,
@ -693,14 +654,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#delete(Path, boolean)} except that Path f must be for
   * this file system.
-   *
-   * @param f the path.
-   * @param recursive recursive flag.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return if successfully deleted success true, not false.
   */
  public abstract boolean delete(final Path f, final boolean recursive)
      throws AccessControlException, FileNotFoundException,
@ -710,13 +663,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#open(Path)} except that Path f must be for this
   * file system.
-   *
-   * @param f the path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return input stream.
   */
  public FSDataInputStream open(final Path f) throws AccessControlException,
      FileNotFoundException, UnresolvedLinkException, IOException {
@ -727,14 +673,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#open(Path, int)} except that Path f must be for this
   * file system.
-   *
-   * @param f the path.
-   * @param bufferSize buffer size.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return if successfully open success true, not false.
   */
  public abstract FSDataInputStream open(final Path f, int bufferSize)
      throws AccessControlException, FileNotFoundException,
@ -744,14 +682,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#truncate(Path, long)} except that Path f must be for
   * this file system.
-   *
-   * @param f the path.
-   * @param newLength new length.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return if successfully truncate success true, not false.
   */
  public boolean truncate(Path f, long newLength)
      throws AccessControlException, FileNotFoundException,
@ -764,14 +694,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#setReplication(Path, short)} except that Path f must be
   * for this file system.
-   *
-   * @param f the path.
-   * @param replication replication.
-   * @return if successfully set replication success true, not false.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public abstract boolean setReplication(final Path f,
      final short replication) throws AccessControlException,
@ -781,16 +703,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#rename(Path, Path, Options.Rename...)} except that Path
   * f must be for this file system.
-   *
-   * @param src src.
-   * @param dst dst.
-   * @param options options.
-   * @throws AccessControlException access control exception.
-   * @throws FileAlreadyExistsException file already exists exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws ParentNotDirectoryException parent not directory exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public final void rename(final Path src, final Path dst,
      final Options.Rename... options) throws AccessControlException,
@ -815,15 +727,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * File systems that do not have a built in overwrite need implement only this
   * method and can take advantage of the default impl of the other
   * {@link #renameInternal(Path, Path, boolean)}
-   *
-   * @param src src.
-   * @param dst dst.
-   * @throws AccessControlException access control exception.
-   * @throws FileAlreadyExistsException file already exists exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws ParentNotDirectoryException parent not directory exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public abstract void renameInternal(final Path src, final Path dst)
      throws AccessControlException, FileAlreadyExistsException,
@ -834,16 +737,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#rename(Path, Path, Options.Rename...)} except that Path
   * f must be for this file system.
-   *
-   * @param src src.
-   * @param dst dst.
-   * @param overwrite overwrite flag.
-   * @throws AccessControlException access control exception.
-   * @throws FileAlreadyExistsException file already exists exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws ParentNotDirectoryException parent not directory exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public void renameInternal(final Path src, final Path dst,
      boolean overwrite) throws AccessControlException,
@ -907,12 +800,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * The specification of this method matches that of  
   * {@link FileContext#createSymlink(Path, Path, boolean)};
-   *
-   * @param target target.
-   * @param link link.
-   * @param createParent create parent.
-   * @throws IOException raised on errors performing I/O.
-   * @throws UnresolvedLinkException unresolved link exception.
   */
  public void createSymlink(final Path target, final Path link,
      final boolean createParent) throws IOException, UnresolvedLinkException {
@ -923,8 +810,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * Partially resolves the path. This is used during symlink resolution in
   * {@link FSLinkResolver}, and differs from the similarly named method
   * {@link FileContext#getLinkTarget(Path)}.
-   * @param f the path.
-   * @return target path.
   * @throws IOException subclass implementations may throw IOException 
   */
  public Path getLinkTarget(final Path f) throws IOException {
@ -937,13 +822,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#setPermission(Path, FsPermission)} except that Path f
   * must be for this file system.
-   *
-   * @param f the path.
-   * @param permission permission.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public abstract void setPermission(final Path f,
      final FsPermission permission) throws AccessControlException,
@ -953,14 +831,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#setOwner(Path, String, String)} except that Path f must
   * be for this file system.
-   *
-   * @param f the path.
-   * @param username username.
-   * @param groupname groupname.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public abstract void setOwner(final Path f, final String username,
      final String groupname) throws AccessControlException,
@ -970,14 +840,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#setTimes(Path, long, long)} except that Path f must be
   * for this file system.
-   *
-   * @param f the path.
-   * @param mtime modify time.
-   * @param atime access time.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public abstract void setTimes(final Path f, final long mtime,
    final long atime) throws AccessControlException, FileNotFoundException,
@ -987,13 +849,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#getFileChecksum(Path)} except that Path f must be for
   * this file system.
-   *
-   * @param f the path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return File Check sum.
   */
  public abstract FileChecksum getFileChecksum(final Path f)
      throws AccessControlException, FileNotFoundException,
@ -1004,13 +859,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * {@link FileContext#getFileStatus(Path)} 
   * except that an UnresolvedLinkException may be thrown if a symlink is 
   * encountered in the path.
-   *
-   * @param f the path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return File Status
   */
  public abstract FileStatus getFileStatus(final Path f)
      throws AccessControlException, FileNotFoundException,
@ -1022,8 +870,8 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * In some FileSystem implementations such as HDFS metadata
   * synchronization is essential to guarantee consistency of read requests
   * particularly in HA setting.
-   * @throws IOException raised on errors performing I/O.
-   * @throws UnsupportedOperationException Unsupported Operation Exception.
+   * @throws IOException
+   * @throws UnsupportedOperationException
   */
  public void msync() throws IOException, UnsupportedOperationException {
    throw new UnsupportedOperationException(getClass().getCanonicalName() +
@ -1035,13 +883,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * {@link FileContext#access(Path, FsAction)}
   * except that an UnresolvedLinkException may be thrown if a symlink is
   * encountered in the path.
-   *
-   * @param path the path.
-   * @param mode fsaction mode.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
   */
  @InterfaceAudience.LimitedPrivate({"HDFS", "Hive"})
  public void access(Path path, FsAction mode) throws AccessControlException,
@ -1056,13 +897,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * encountered in the path leading up to the final path component.
   * If the file system does not support symlinks then the behavior is
   * equivalent to {@link AbstractFileSystem#getFileStatus(Path)}.
-   *
-   * @param f the path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnsupportedFileSystemException UnSupported File System Exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return file status.
   */
  public FileStatus getFileLinkStatus(final Path f)
      throws AccessControlException, FileNotFoundException,
@ -1074,15 +908,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#getFileBlockLocations(Path, long, long)} except that
   * Path f must be for this file system.
-   *
-   * @param f the path.
-   * @param start start.
-   * @param len length.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return BlockLocation Array.
   */
  public abstract BlockLocation[] getFileBlockLocations(final Path f,
      final long start, final long len) throws AccessControlException,
@ -1092,13 +917,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#getFsStatus(Path)} except that Path f must be for this
   * file system.
-   *
-   * @param f the path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return Fs Status.
   */
  public FsStatus getFsStatus(final Path f) throws AccessControlException,
      FileNotFoundException, UnresolvedLinkException, IOException {
@ -1109,11 +927,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * The specification of this method matches that of
   * {@link FileContext#getFsStatus(Path)}.
-   *
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return Fs Status.
   */
  public abstract FsStatus getFsStatus() throws AccessControlException,
      FileNotFoundException, IOException;
@ -1122,13 +935,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#listStatus(Path)} except that Path f must be for this
   * file system.
-   *
-   * @param f path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return FileStatus Iterator.
   */
  public RemoteIterator<FileStatus> listStatusIterator(final Path f)
      throws AccessControlException, FileNotFoundException,
@ -1161,13 +967,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * will have different formats for replicated and erasure coded file. Please
   * refer to {@link FileSystem#getFileBlockLocations(FileStatus, long, long)}
   * for more details.
-   *
-   * @param f the path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return FileStatus Iterator.
   */
  public RemoteIterator<LocatedFileStatus> listLocatedStatus(final Path f)
      throws AccessControlException, FileNotFoundException,
@ -1200,12 +999,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext.Util#listStatus(Path)} except that Path f must be 
   * for this file system.
-   * @param f the path.
-   * @throws AccessControlException access control exception.
-   * @throws FileNotFoundException file not found exception.
-   * @throws UnresolvedLinkException unresolved link exception.
-   * @throws IOException raised on errors performing I/O.
-   * @return FileStatus Iterator.
   */
  public abstract FileStatus[] listStatus(final Path f)
      throws AccessControlException, FileNotFoundException,
@ -1214,8 +1007,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * @return an iterator over the corrupt files under the given path
   * (may contain duplicates if a file has more than one corrupt block)
-   * @param path the path.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public RemoteIterator<Path> listCorruptFileBlocks(Path path)
    throws IOException {
@ -1228,10 +1020,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * The specification of this method matches that of
   * {@link FileContext#setVerifyChecksum(boolean, Path)} except that Path f
   * must be for this file system.
-   *
-   * @param verifyChecksum verify check sum flag.
-   * @throws AccessControlException access control exception.
-   * @throws IOException raised on errors performing I/O.
   */
  public abstract void setVerifyChecksum(final boolean verifyChecksum)
      throws AccessControlException, IOException;
@ -1253,7 +1041,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param renewer the account name that is allowed to renew the token.
   * @return List of delegation tokens.
   *   If delegation tokens not supported then return a list of size zero.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  @InterfaceAudience.LimitedPrivate( { "HDFS", "MapReduce" })
  public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
@ -1353,7 +1141,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param path Path to modify
   * @param name xattr name.
   * @param value xattr value.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public void setXAttr(Path path, String name, byte[] value)
      throws IOException {
@ -1372,7 +1160,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param name xattr name.
   * @param value xattr value.
   * @param flag xattr set flag
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public void setXAttr(Path path, String name, byte[] value,
      EnumSet<XAttrSetFlag> flag) throws IOException {
@ -1390,7 +1178,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param path Path to get extended attribute
   * @param name xattr name.
   * @return byte[] xattr value.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public byte[] getXAttr(Path path, String name) throws IOException {
    throw new UnsupportedOperationException(getClass().getSimpleName()
@ -1408,7 +1196,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   *
   * @return {@literal Map<String, byte[]>} describing the XAttrs of the file
   * or directory
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public Map<String, byte[]> getXAttrs(Path path) throws IOException {
    throw new UnsupportedOperationException(getClass().getSimpleName()
@ -1426,7 +1214,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param names XAttr names.
   * @return {@literal Map<String, byte[]>} describing the XAttrs of the file
   * or directory
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public Map<String, byte[]> getXAttrs(Path path, List<String> names)
      throws IOException {
@ -1444,7 +1232,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param path Path to get extended attributes
   * @return {@literal Map<String, byte[]>} describing the XAttrs of the file
   * or directory
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public List<String> listXAttrs(Path path)
          throws IOException {
@ -1461,7 +1249,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   *
   * @param path Path to remove extended attribute
   * @param name xattr name
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public void removeXAttr(Path path, String name) throws IOException {
    throw new UnsupportedOperationException(getClass().getSimpleName()
@ -1471,11 +1259,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * The specification of this method matches that of
   * {@link FileContext#createSnapshot(Path, String)}.
-   *
-   * @param path the path.
-   * @param snapshotName snapshot name.
-   * @throws IOException raised on errors performing I/O.
-   * @return path.
   */
  public Path createSnapshot(final Path path, final String snapshotName)
      throws IOException {
@ -1486,11 +1269,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * The specification of this method matches that of
   * {@link FileContext#renameSnapshot(Path, String, String)}.
-   *
-   * @param path the path.
-   * @param snapshotOldName snapshot old name.
-   * @param snapshotNewName snapshot new name.
-   * @throws IOException raised on errors performing I/O.
   */
  public void renameSnapshot(final Path path, final String snapshotOldName,
      final String snapshotNewName) throws IOException {
@ -1501,10 +1279,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * The specification of this method matches that of
   * {@link FileContext#deleteSnapshot(Path, String)}.
-   *
-   * @param snapshotDir snapshot dir.
-   * @param snapshotName snapshot name.
-   * @throws IOException raised on errors performing I/O.
   */
  public void deleteSnapshot(final Path snapshotDir, final String snapshotName)
      throws IOException {
@ -1515,7 +1289,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * Set the source path to satisfy storage policy.
   * @param path The source path referring to either a directory or a file.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public void satisfyStoragePolicy(final Path path) throws IOException {
    throw new UnsupportedOperationException(
@ -1529,7 +1303,6 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * @param policyName the name of the target storage policy. The list
   *                   of supported Storage policies can be retrieved
   *                   via {@link #getAllStoragePolicies}.
-   * @throws IOException raised on errors performing I/O.
   */
  public void setStoragePolicy(final Path path, final String policyName)
      throws IOException {
@ -1541,7 +1314,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
  /**
   * Unset the storage policy set for a given file or directory.
   * @param src file or directory path.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public void unsetStoragePolicy(final Path src) throws IOException {
    throw new UnsupportedOperationException(getClass().getSimpleName()
@ -1553,7 +1326,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   *
   * @param src file or directory path.
   * @return storage policy for give file.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public BlockStoragePolicySpi getStoragePolicy(final Path src)
      throws IOException {
@ -1565,7 +1338,7 @@ public abstract class AbstractFileSystem implements PathCapabilities {
   * Retrieve all the storage policies supported by this file system.
   *
   * @return all storage policies supported by this filesystem.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public Collection<? extends BlockStoragePolicySpi> getAllStoragePolicies()
      throws IOException {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/AvroFSInput.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/AvroFSInput.java
@ -25,10 +25,6 @@ import org.apache.avro.file.SeekableInput;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;

-import static org.apache.hadoop.fs.Options.OpenFileOptions.FS_OPTION_OPENFILE_READ_POLICY;
-import static org.apache.hadoop.fs.Options.OpenFileOptions.FS_OPTION_OPENFILE_READ_POLICY_SEQUENTIAL;
-import static org.apache.hadoop.util.functional.FutureIO.awaitFuture;
-
 /** Adapts an {@link FSDataInputStream} to Avro's SeekableInput interface. */
@InterfaceAudience.Public
@InterfaceStability.Stable
@ -36,30 +32,17 @@ public class AvroFSInput implements Closeable, SeekableInput {
  private final FSDataInputStream stream;
  private final long len;

-  /**
-   * Construct given an {@link FSDataInputStream} and its length.
-   *
-   * @param in inputstream.
-   * @param len len.
-   */
+  /** Construct given an {@link FSDataInputStream} and its length. */
  public AvroFSInput(final FSDataInputStream in, final long len) {
    this.stream = in;
    this.len = len;
  }

-  /** Construct given a {@link FileContext} and a {@link Path}.
-   * @param fc filecontext.
-   * @param p the path.
-   * @throws IOException If an I/O error occurred.
-   * */
+  /** Construct given a {@link FileContext} and a {@link Path}. */
  public AvroFSInput(final FileContext fc, final Path p) throws IOException {
    FileStatus status = fc.getFileStatus(p);
    this.len = status.getLen();
-    this.stream = awaitFuture(fc.openFile(p)
-        .opt(FS_OPTION_OPENFILE_READ_POLICY,
-            FS_OPTION_OPENFILE_READ_POLICY_SEQUENTIAL)
-        .withFileStatus(status)
-        .build());
+    this.stream = fc.open(p);
  }

  @Override
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BatchedRemoteIterator.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BatchedRemoteIterator.java
@ -68,7 +68,6 @@ public abstract class BatchedRemoteIterator<K, E> implements RemoteIterator<E> {
   * 
   * @param prevKey The key to send.
   * @return A list of replies.
-   * @throws IOException If an I/O error occurred.
   */
  public abstract BatchedEntries<E> makeRequest(K prevKey) throws IOException;

@ -103,8 +102,6 @@ public abstract class BatchedRemoteIterator<K, E> implements RemoteIterator<E> {

  /**
   * Return the next list key associated with an element.
-   * @param element element.
-   * @return K Generics Type.
   */
  public abstract K elementToPrevKey(E element);

--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BlockLocation.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BlockLocation.java
@ -85,7 +85,6 @@ public class BlockLocation implements Serializable {

  /**
   * Copy constructor.
-   * @param that blocklocation.
   */
  public BlockLocation(BlockLocation that) {
    this.hosts = that.hosts;
@ -101,10 +100,6 @@ public class BlockLocation implements Serializable {

  /**
   * Constructor with host, name, offset and length.
-   * @param names names array.
-   * @param hosts host array.
-   * @param offset offset.
-   * @param length length.
   */
  public BlockLocation(String[] names, String[] hosts, long offset, 
                       long length) {
@ -113,11 +108,6 @@ public class BlockLocation implements Serializable {

  /**
   * Constructor with host, name, offset, length and corrupt flag.
-   * @param names names.
-   * @param hosts hosts.
-   * @param offset offset.
-   * @param length length.
-   * @param corrupt corrupt.
   */
  public BlockLocation(String[] names, String[] hosts, long offset, 
                       long length, boolean corrupt) {
@ -126,11 +116,6 @@ public class BlockLocation implements Serializable {

  /**
   * Constructor with host, name, network topology, offset and length.
-   * @param names names.
-   * @param hosts hosts.
-   * @param topologyPaths topologyPaths.
-   * @param offset offset.
-   * @param length length.
   */
  public BlockLocation(String[] names, String[] hosts, String[] topologyPaths,
                       long offset, long length) {
@ -140,12 +125,6 @@ public class BlockLocation implements Serializable {
  /**
   * Constructor with host, name, network topology, offset, length 
   * and corrupt flag.
-   * @param names names.
-   * @param hosts hosts.
-   * @param topologyPaths topologyPaths.
-   * @param offset offset.
-   * @param length length.
-   * @param corrupt corrupt.
   */
  public BlockLocation(String[] names, String[] hosts, String[] topologyPaths,
                       long offset, long length, boolean corrupt) {
@ -198,8 +177,6 @@ public class BlockLocation implements Serializable {

  /**
   * Get the list of hosts (hostname) hosting this block.
-   * @return hosts array.
-   * @throws IOException If an I/O error occurred.
   */
  public String[] getHosts() throws IOException {
    return hosts;
@ -207,7 +184,6 @@ public class BlockLocation implements Serializable {

  /**
   * Get the list of hosts (hostname) hosting a cached replica of the block.
-   * @return cached hosts.
   */
  public String[] getCachedHosts() {
    return cachedHosts;
@ -215,8 +191,6 @@ public class BlockLocation implements Serializable {

  /**
   * Get the list of names (IP:xferPort) hosting this block.
-   * @return names array.
-   * @throws IOException If an I/O error occurred.
   */
  public String[] getNames() throws IOException {
    return names;
@ -225,8 +199,6 @@ public class BlockLocation implements Serializable {
  /**
   * Get the list of network topology paths for each of the hosts.
   * The last component of the path is the "name" (IP:xferPort).
-   * @return topology paths.
-   * @throws IOException If an I/O error occurred.
   */
  public String[] getTopologyPaths() throws IOException {
    return topologyPaths;
@ -234,7 +206,6 @@ public class BlockLocation implements Serializable {

  /**
   * Get the storageID of each replica of the block.
-   * @return storage ids.
   */
  public String[] getStorageIds() {
    return storageIds;
@ -242,7 +213,6 @@ public class BlockLocation implements Serializable {

  /**
   * Get the storage type of each replica of the block.
-   * @return storage type of each replica of the block.
   */
  public StorageType[] getStorageTypes() {
    return storageTypes;
@ -250,7 +220,6 @@ public class BlockLocation implements Serializable {

  /**
   * Get the start offset of file associated with this block.
-   * @return start offset of file associated with this block.
   */
  public long getOffset() {
    return offset;
@ -258,7 +227,6 @@ public class BlockLocation implements Serializable {
  
  /**
   * Get the length of the block.
-   * @return length of the block.
   */
  public long getLength() {
    return length;
@ -266,7 +234,6 @@ public class BlockLocation implements Serializable {

  /**
   * Get the corrupt flag.
-   * @return corrupt flag.
   */
  public boolean isCorrupt() {
    return corrupt;
@ -274,7 +241,6 @@ public class BlockLocation implements Serializable {

  /**
   * Return true if the block is striped (erasure coded).
-   * @return if the block is striped true, not false.
   */
  public boolean isStriped() {
    return false;
@ -282,7 +248,6 @@ public class BlockLocation implements Serializable {

  /**
   * Set the start offset of file associated with this block.
-   * @param offset start offset.
   */
  public void setOffset(long offset) {
    this.offset = offset;
@ -290,7 +255,6 @@ public class BlockLocation implements Serializable {

  /**
   * Set the length of block.
-   * @param length length of block.
   */
  public void setLength(long length) {
    this.length = length;
@ -298,7 +262,6 @@ public class BlockLocation implements Serializable {

  /**
   * Set the corrupt flag.
-   * @param corrupt corrupt flag.
   */
  public void setCorrupt(boolean corrupt) {
    this.corrupt = corrupt;
@ -306,8 +269,6 @@ public class BlockLocation implements Serializable {

  /**
   * Set the hosts hosting this block.
-   * @param hosts hosts array.
-   * @throws IOException If an I/O error occurred.
   */
  public void setHosts(String[] hosts) throws IOException {
    if (hosts == null) {
@ -319,7 +280,6 @@ public class BlockLocation implements Serializable {

  /**
   * Set the hosts hosting a cached replica of this block.
-   * @param cachedHosts cached hosts.
   */
  public void setCachedHosts(String[] cachedHosts) {
    if (cachedHosts == null) {
@ -331,8 +291,6 @@ public class BlockLocation implements Serializable {

  /**
   * Set the names (host:port) hosting this block.
-   * @param names names.
-   * @throws IOException If an I/O error occurred.
   */
  public void setNames(String[] names) throws IOException {
    if (names == null) {
@ -344,9 +302,6 @@ public class BlockLocation implements Serializable {

  /**
   * Set the network topology paths of the hosts.
-   *
-   * @param topologyPaths topology paths.
-   * @throws IOException If an I/O error occurred.
   */
  public void setTopologyPaths(String[] topologyPaths) throws IOException {
    if (topologyPaths == null) {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BufferedFSInputStream.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BufferedFSInputStream.java
@ -1,4 +1,4 @@
-/*
+/**
 * 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
@ -22,9 +22,6 @@ import java.io.EOFException;
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.util.StringJoiner;
-import java.nio.ByteBuffer;
-import java.util.List;
-import java.util.function.IntFunction;

 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@ -165,20 +162,4 @@ public class BufferedFSInputStream extends BufferedInputStream
        .add("in=" + in)
        .toString();
  }
-
-  @Override
-  public int minSeekForVectorReads() {
-    return ((PositionedReadable) in).minSeekForVectorReads();
-  }
-
-  @Override
-  public int maxReadSizeForVectorReads() {
-    return ((PositionedReadable) in).maxReadSizeForVectorReads();
-  }
-
-  @Override
-  public void readVectored(List<? extends FileRange> ranges,
-                           IntFunction<ByteBuffer> allocate) throws IOException {
-    ((PositionedReadable) in).readVectored(ranges, allocate);
-  }
 }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ByteBufferUtil.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ByteBufferUtil.java
@ -47,12 +47,6 @@ public final class ByteBufferUtil {

  /**
   * Perform a fallback read.
-   *
-   * @param stream input stream.
-   * @param bufferPool bufferPool.
-   * @param maxLength maxLength.
-   * @throws IOException raised on errors performing I/O.
-   * @return byte buffer.
   */
  public static ByteBuffer fallbackRead(
      InputStream stream, ByteBufferPool bufferPool, int maxLength)
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CachingGetSpaceUsed.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CachingGetSpaceUsed.java
@ -19,7 +19,6 @@ package org.apache.hadoop.fs;

 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
-import org.apache.hadoop.classification.VisibleForTesting;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

@ -53,9 +52,6 @@ public abstract class CachingGetSpaceUsed implements Closeable, GetSpaceUsed {
  /**
   * This is the constructor used by the builder.
   * All overriding classes should implement this.
-   *
-   * @param builder builder.
-   * @throws IOException raised on errors performing I/O.
   */
  public CachingGetSpaceUsed(CachingGetSpaceUsed.Builder builder)
      throws IOException {
@ -93,19 +89,19 @@ public abstract class CachingGetSpaceUsed implements Closeable, GetSpaceUsed {
      if (!shouldFirstRefresh) {
        // Skip initial refresh operation, so we need to do first refresh
        // operation immediately in refresh thread.
-        initRefreshThread(true);
+        initRefeshThread(true);
        return;
      }
      refresh();
    }
-    initRefreshThread(false);
+    initRefeshThread(false);
  }

  /**
   * RunImmediately should set true, if we skip the first refresh.
   * @param runImmediately The param default should be false.
   */
-  private void initRefreshThread(boolean runImmediately) {
+  private void initRefeshThread (boolean runImmediately) {
    if (refreshInterval > 0) {
      refreshUsed = new Thread(new RefreshThread(this, runImmediately),
          "refreshUsed-" + dirPath);
@ -143,8 +139,6 @@ public abstract class CachingGetSpaceUsed implements Closeable, GetSpaceUsed {

  /**
   * Increment the cached value of used space.
-   *
-   * @param value dfs used value.
   */
  public void incDfsUsed(long value) {
    used.addAndGet(value);
@ -159,25 +153,11 @@ public abstract class CachingGetSpaceUsed implements Closeable, GetSpaceUsed {

  /**
   * How long in between runs of the background refresh.
-   *
-   * @return refresh interval.
   */
-  @VisibleForTesting
-  public long getRefreshInterval() {
+  long getRefreshInterval() {
    return refreshInterval;
  }

-  /**
-   * Randomize the refresh interval timing by this amount, the actual interval will be chosen
-   * uniformly between {@code interval-jitter} and {@code interval+jitter}.
-   *
-   * @return between interval-jitter and interval+jitter.
-   */
-  @VisibleForTesting
-  public long getJitter() {
-    return jitter;
-  }
-
  /**
   * Reset the current used data amount. This should be called
   * when the cached value is re-computed.
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ChecksumFileSystem.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ChecksumFileSystem.java
@ -22,24 +22,18 @@ import java.io.EOFException;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
-import java.nio.ByteBuffer;
-import java.nio.IntBuffer;
 import java.nio.channels.ClosedChannelException;
-import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.EnumSet;
 import java.util.List;
 import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CompletionException;
-import java.util.function.IntFunction;
-import java.util.zip.CRC32;

 import org.apache.hadoop.util.Preconditions;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.impl.AbstractFSBuilderImpl;
-import org.apache.hadoop.fs.impl.CombinedFileRange;
 import org.apache.hadoop.fs.impl.FutureDataInputStreamBuilderImpl;
 import org.apache.hadoop.fs.impl.OpenFileParameters;
 import org.apache.hadoop.fs.permission.AclEntry;
@ -51,10 +45,8 @@ import org.apache.hadoop.util.DataChecksum;
 import org.apache.hadoop.util.LambdaUtils;
 import org.apache.hadoop.util.Progressable;

-import static org.apache.hadoop.fs.Options.OpenFileOptions.FS_OPTION_OPENFILE_STANDARD_OPTIONS;
 import static org.apache.hadoop.fs.impl.PathCapabilitiesSupport.validatePathCapabilityArgs;
 import static org.apache.hadoop.fs.impl.StoreImplementationUtils.isProbeForSyncable;
-import static org.apache.hadoop.fs.VectoredReadUtils.sortRanges;

 /****************************************************************
 * Abstract Checksumed FileSystem.
@ -110,44 +102,25 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
    return fs;
  }

-  /**
-   * Return the name of the checksum file associated with a file.
-   *
-   * @param file the file path.
-   * @return name of the checksum file associated with a file.
-   */
+  /** Return the name of the checksum file associated with a file.*/
  public Path getChecksumFile(Path file) {
    return new Path(file.getParent(), "." + file.getName() + ".crc");
  }

-  /**
-   * Return true if file is a checksum file name.
-   *
-   * @param file the file path.
-   * @return if file is a checksum file true, not false.
-   */
+  /** Return true iff file is a checksum file name.*/
  public static boolean isChecksumFile(Path file) {
    String name = file.getName();
    return name.startsWith(".") && name.endsWith(".crc");
  }

-  /**
-   * Return the length of the checksum file given the size of the
+  /** Return the length of the checksum file given the size of the 
   * actual file.
-   *
-   * @param file the file path.
-   * @param fileSize file size.
-   * @return checksum length.
-   */
+   **/
  public long getChecksumFileLength(Path file, long fileSize) {
    return getChecksumLength(fileSize, getBytesPerSum());
  }

-  /**
-   * Return the bytes Per Checksum.
-   *
-   * @return bytes per check sum.
-   */
+  /** Return the bytes Per Checksum */
  public int getBytesPerSum() {
    return bytesPerChecksum;
  }
@ -166,7 +139,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
   * It verifies that data matches checksums.
   *******************************************************/
  private static class ChecksumFSInputChecker extends FSInputChecker implements
-      IOStatisticsSource, StreamCapabilities {
+      IOStatisticsSource {
    private ChecksumFileSystem fs;
    private FSDataInputStream datas;
    private FSDataInputStream sums;
@ -174,7 +147,6 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
    private static final int HEADER_LENGTH = 8;
    
    private int bytesPerSum = 1;
-    private long fileLen = -1L;
    
    public ChecksumFSInputChecker(ChecksumFileSystem fs, Path file)
      throws IOException {
@ -198,8 +170,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
        if (!Arrays.equals(version, CHECKSUM_VERSION))
          throw new IOException("Not a checksum file: "+sumFile);
        this.bytesPerSum = sums.readInt();
-        set(fs.verifyChecksum, DataChecksum.newCrc32(), bytesPerSum,
-            FSInputChecker.CHECKSUM_SIZE);
+        set(fs.verifyChecksum, DataChecksum.newCrc32(), bytesPerSum, 4);
      } catch (IOException e) {
        // mincing the message is terrible, but java throws permission
        // exceptions as FNF because that's all the method signatures allow!
@ -213,7 +184,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
    }
    
    private long getChecksumFilePos( long dataPos ) {
-      return HEADER_LENGTH + FSInputChecker.CHECKSUM_SIZE*(dataPos/bytesPerSum);
+      return HEADER_LENGTH + 4*(dataPos/bytesPerSum);
    }
    
    @Override
@ -315,185 +286,6 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
    public IOStatistics getIOStatistics() {
      return IOStatisticsSupport.retrieveIOStatistics(datas);
    }
-
-    public static long findChecksumOffset(long dataOffset,
-                                          int bytesPerSum) {
-      return HEADER_LENGTH + (dataOffset/bytesPerSum) * FSInputChecker.CHECKSUM_SIZE;
-    }
-
-    /**
-     * Calculate length of file if not already cached.
-     * @return file length.
-     * @throws IOException any IOE.
-     */
-    private long getFileLength() throws IOException {
-      if (fileLen == -1L) {
-        fileLen = fs.getFileStatus(file).getLen();
-      }
-      return fileLen;
-    }
-
-    /**
-     * Find the checksum ranges that correspond to the given data ranges.
-     * @param dataRanges the input data ranges, which are assumed to be sorted
-     *                   and non-overlapping
-     * @return a list of AsyncReaderUtils.CombinedFileRange that correspond to
-     *         the checksum ranges
-     */
-    public static List<CombinedFileRange> findChecksumRanges(
-        List<? extends FileRange> dataRanges,
-        int bytesPerSum,
-        int minSeek,
-        int maxSize) {
-      List<CombinedFileRange> result = new ArrayList<>();
-      CombinedFileRange currentCrc = null;
-      for(FileRange range: dataRanges) {
-        long crcOffset = findChecksumOffset(range.getOffset(), bytesPerSum);
-        long crcEnd = findChecksumOffset(range.getOffset() + range.getLength() +
-                                             bytesPerSum - 1, bytesPerSum);
-        if (currentCrc == null ||
-                !currentCrc.merge(crcOffset, crcEnd, range, minSeek, maxSize)) {
-          currentCrc = new CombinedFileRange(crcOffset, crcEnd, range);
-          result.add(currentCrc);
-        }
-      }
-      return result;
-    }
-
-    /**
-     * Check the data against the checksums.
-     * @param sumsBytes the checksum data
-     * @param sumsOffset where from the checksum file this buffer started
-     * @param data the file data
-     * @param dataOffset where the file data started (must be a multiple of
-     *                  bytesPerSum)
-     * @param bytesPerSum how many bytes per a checksum
-     * @param file the path of the filename
-     * @return the data buffer
-     * @throws CompletionException if the checksums don't match
-     */
-    static ByteBuffer checkBytes(ByteBuffer sumsBytes,
-                                 long sumsOffset,
-                                 ByteBuffer data,
-                                 long dataOffset,
-                                 int bytesPerSum,
-                                 Path file) {
-      // determine how many bytes we need to skip at the start of the sums
-      int offset =
-          (int) (findChecksumOffset(dataOffset, bytesPerSum) - sumsOffset);
-      IntBuffer sums = sumsBytes.asIntBuffer();
-      sums.position(offset / FSInputChecker.CHECKSUM_SIZE);
-      ByteBuffer current = data.duplicate();
-      int numFullChunks = data.remaining() / bytesPerSum;
-      boolean partialChunk = ((data.remaining() % bytesPerSum) != 0);
-      int totalChunks = numFullChunks;
-      if (partialChunk) {
-        totalChunks++;
-      }
-      CRC32 crc = new CRC32();
-      // check each chunk to ensure they match
-      for(int c = 0; c < totalChunks; ++c) {
-        // set the buffer position to the start of every chunk.
-        current.position(c * bytesPerSum);
-
-        if (c == numFullChunks) {
-          // During last chunk, there may be less than chunk size
-          // data preset, so setting the limit accordingly.
-          int lastIncompleteChunk = data.remaining() % bytesPerSum;
-          current.limit((c * bytesPerSum) + lastIncompleteChunk);
-        } else {
-          // set the buffer limit to end of every chunk.
-          current.limit((c + 1) * bytesPerSum);
-        }
-
-        // compute the crc
-        crc.reset();
-        crc.update(current);
-        int expected = sums.get();
-        int calculated = (int) crc.getValue();
-
-        if (calculated != expected) {
-          // cast of c added to silence findbugs
-          long errPosn = dataOffset + (long) c * bytesPerSum;
-          throw new CompletionException(new ChecksumException(
-              "Checksum error: " + file + " at " + errPosn +
-                  " exp: " + expected + " got: " + calculated, errPosn));
-        }
-      }
-      // if everything matches, we return the data
-      return data;
-    }
-
-    /**
-     * Validates range parameters.
-     * In case of CheckSum FS, we already have calculated
-     * fileLength so failing fast here.
-     * @param ranges requested ranges.
-     * @param fileLength length of file.
-     * @throws EOFException end of file exception.
-     */
-    private void validateRangeRequest(List<? extends FileRange> ranges,
-                                      final long fileLength) throws EOFException {
-      for (FileRange range : ranges) {
-        VectoredReadUtils.validateRangeRequest(range);
-        if (range.getOffset() + range.getLength() > fileLength) {
-          final String errMsg = String.format("Requested range [%d, %d) is beyond EOF for path %s",
-                  range.getOffset(), range.getLength(), file);
-          LOG.warn(errMsg);
-          throw new EOFException(errMsg);
-        }
-      }
-    }
-
-    @Override
-    public void readVectored(List<? extends FileRange> ranges,
-                             IntFunction<ByteBuffer> allocate) throws IOException {
-      final long length = getFileLength();
-      validateRangeRequest(ranges, length);
-
-      // If the stream doesn't have checksums, just delegate.
-      if (sums == null) {
-        datas.readVectored(ranges, allocate);
-        return;
-      }
-      int minSeek = minSeekForVectorReads();
-      int maxSize = maxReadSizeForVectorReads();
-      List<CombinedFileRange> dataRanges =
-          VectoredReadUtils.mergeSortedRanges(Arrays.asList(sortRanges(ranges)), bytesPerSum,
-              minSeek, maxReadSizeForVectorReads());
-      // While merging the ranges above, they are rounded up based on the value of bytesPerSum
-      // which leads to some ranges crossing the EOF thus they need to be fixed else it will
-      // cause EOFException during actual reads.
-      for (CombinedFileRange range : dataRanges) {
-        if (range.getOffset() + range.getLength() > length) {
-          range.setLength((int) (length - range.getOffset()));
-        }
-      }
-      List<CombinedFileRange> checksumRanges = findChecksumRanges(dataRanges,
-          bytesPerSum, minSeek, maxSize);
-      sums.readVectored(checksumRanges, allocate);
-      datas.readVectored(dataRanges, allocate);
-      for(CombinedFileRange checksumRange: checksumRanges) {
-        for(FileRange dataRange: checksumRange.getUnderlying()) {
-          // when we have both the ranges, validate the checksum
-          CompletableFuture<ByteBuffer> result =
-              checksumRange.getData().thenCombineAsync(dataRange.getData(),
-                  (sumBuffer, dataBuffer) ->
-                      checkBytes(sumBuffer, checksumRange.getOffset(),
-                          dataBuffer, dataRange.getOffset(), bytesPerSum, file));
-          // Now, slice the read data range to the user's ranges
-          for(FileRange original: ((CombinedFileRange) dataRange).getUnderlying()) {
-            original.setData(result.thenApply(
-                (b) -> VectoredReadUtils.sliceTo(b, dataRange.getOffset(), original)));
-          }
-        }
-      }
-    }
-
-    @Override
-    public boolean hasCapability(String capability) {
-      return datas.hasCapability(capability);
-    }
  }
  
  private static class FSDataBoundedInputStream extends FSDataInputStream {
@ -570,7 +362,6 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
   * Opens an FSDataInputStream at the indicated Path.
   * @param f the file name to open
   * @param bufferSize the size of the buffer to be used.
-   * @throws IOException if an I/O error occurs.
   */
  @Override
  public FSDataInputStream open(Path f, int bufferSize) throws IOException {
@ -614,8 +405,8 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
  public static long getChecksumLength(long size, int bytesPerSum) {
    //the checksum length is equal to size passed divided by bytesPerSum +
    //bytes written in the beginning of the checksum file.  
-    return ((size + bytesPerSum - 1) / bytesPerSum) * FSInputChecker.CHECKSUM_SIZE +
-             ChecksumFSInputChecker.HEADER_LENGTH;
+    return ((size + bytesPerSum - 1) / bytesPerSum) * 4 +
+             CHECKSUM_VERSION.length + 4;  
  }

  /** This class provides an output stream for a checksummed file.
@ -627,7 +418,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
    private static final float CHKSUM_AS_FRACTION = 0.01f;
    private boolean isClosed = false;
    
-    ChecksumFSOutputSummer(ChecksumFileSystem fs,
+    public ChecksumFSOutputSummer(ChecksumFileSystem fs, 
                          Path file, 
                          boolean overwrite,
                          int bufferSize,
@ -878,7 +669,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
   * Implement the abstract <tt>setReplication</tt> of <tt>FileSystem</tt>
   * @param src file name
   * @param replication new replication
-   * @throws IOException if an I/O error occurs.
+   * @throws IOException
   * @return true if successful;
   *         false if file does not exist or is a directory
   */
@ -963,7 +754,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
   * @param f
   *          given path
   * @return the statuses of the files/directories in the given path
-   * @throws IOException if an I/O error occurs.
+   * @throws IOException
   */
  @Override
  public FileStatus[] listStatus(Path f) throws IOException {
@ -984,7 +775,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
   * @param f
   *          given path
   * @return the statuses of the files/directories in the given patch
-   * @throws IOException if an I/O error occurs.
+   * @throws IOException
   */
  @Override
  public RemoteIterator<LocatedFileStatus> listLocatedStatus(Path f)
@ -1020,10 +811,6 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
   * Copy it from FS control to the local dst name.
   * If src and dst are directories, the copyCrc parameter
   * determines whether to copy CRC files.
-   * @param src src path.
-   * @param dst dst path.
-   * @param copyCrc copy csc flag.
-   * @throws IOException if an I/O error occurs.
   */
  @SuppressWarnings("deprecation")
  public void copyToLocalFile(Path src, Path dst, boolean copyCrc)
@ -1102,7 +889,7 @@ public abstract class ChecksumFileSystem extends FilterFileSystem {
      final OpenFileParameters parameters) throws IOException {
    AbstractFSBuilderImpl.rejectUnknownMandatoryKeys(
        parameters.getMandatoryKeys(),
-        FS_OPTION_OPENFILE_STANDARD_OPTIONS,
+        Collections.emptySet(),
        "for " + path);
    return LambdaUtils.eval(
        new CompletableFuture<>(),
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ChecksumFs.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ChecksumFs.java
@ -70,53 +70,30 @@ public abstract class ChecksumFs extends FilterFs {
    this.verifyChecksum = inVerifyChecksum;
  }

-  /**
-   * get the raw file system.
-   *
-   * @return abstract file system.
-   */
+  /** get the raw file system. */
  public AbstractFileSystem getRawFs() {
    return getMyFs();
  }

-  /**
-   * Return the name of the checksum file associated with a file.
-   *
-   * @param file the file path.
-   * @return the checksum file associated with a file.
-   */
+  /** Return the name of the checksum file associated with a file.*/
  public Path getChecksumFile(Path file) {
    return new Path(file.getParent(), "." + file.getName() + ".crc");
  }

-  /**
-   * Return true iff file is a checksum file name.
-   *
-   * @param file the file path.
-   * @return if is checksum file true,not false.
-   */
+  /** Return true iff file is a checksum file name.*/
  public static boolean isChecksumFile(Path file) {
    String name = file.getName();
    return name.startsWith(".") && name.endsWith(".crc");
  }

-  /**
-   * Return the length of the checksum file given the size of the
+  /** Return the length of the checksum file given the size of the 
   * actual file.
-   *
-   * @param file the file path.
-   * @param fileSize file size.
-   * @return check sum file length.
-   */
+   **/
  public long getChecksumFileLength(Path file, long fileSize) {
    return getChecksumLength(fileSize, getBytesPerSum());
  }

-  /**
-   * Return the bytes Per Checksum.
-   *
-   * @return bytes per sum.
-   */
+  /** Return the bytes Per Checksum. */
  public int getBytesPerSum() {
    return defaultBytesPerChecksum;
  }
@ -456,7 +433,7 @@ public abstract class ChecksumFs extends FilterFs {
   * Implement the abstract <tt>setReplication</tt> of <tt>FileSystem</tt>
   * @param src file name
   * @param replication new replication
-   * @throws IOException if an I/O error occurs.
+   * @throws IOException
   * @return true if successful;
   *         false if file does not exist or is a directory
   */
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeys.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeys.java
@ -399,12 +399,6 @@ public class CommonConfigurationKeys extends CommonConfigurationKeysPublic {
  public static final String ZK_ACL_DEFAULT = "world:anyone:rwcda";
  /** Authentication for the ZooKeeper ensemble. */
  public static final String ZK_AUTH = ZK_PREFIX + "auth";
-  /** Principal name for zookeeper servers. */
-  public static final String ZK_SERVER_PRINCIPAL = ZK_PREFIX + "server.principal";
-  /** Kerberos principal name for zookeeper connection. */
-  public static final String ZK_KERBEROS_PRINCIPAL = ZK_PREFIX + "kerberos.principal";
-  /** Kerberos keytab for zookeeper connection. */
-  public static final String ZK_KERBEROS_KEYTAB = ZK_PREFIX + "kerberos.keytab";

  /** Address of the ZooKeeper ensemble. */
  public static final String ZK_ADDRESS = ZK_PREFIX + "address";
@ -417,14 +411,6 @@ public class CommonConfigurationKeys extends CommonConfigurationKeysPublic {
  /** How often to retry a ZooKeeper operation  in milliseconds. */
  public static final String ZK_RETRY_INTERVAL_MS =
      ZK_PREFIX + "retry-interval-ms";
-  /** Keystore location for ZooKeeper client connection over SSL. */
-  public static final String ZK_SSL_KEYSTORE_LOCATION = ZK_PREFIX + "ssl.keystore.location";
-  /** Keystore password for ZooKeeper client connection over SSL. */
-  public static final String ZK_SSL_KEYSTORE_PASSWORD = ZK_PREFIX + "ssl.keystore.password";
-  /** Truststore location for ZooKeeper client connection over SSL. */
-  public static final String ZK_SSL_TRUSTSTORE_LOCATION = ZK_PREFIX + "ssl.truststore.location";
-  /** Truststore password for ZooKeeper client connection over SSL.  */
-  public static final String ZK_SSL_TRUSTSTORE_PASSWORD = ZK_PREFIX + "ssl.truststore.password";
  public static final int    ZK_RETRY_INTERVAL_MS_DEFAULT = 1000;
  /** Default domain name resolver for hadoop to use. */
  public static final String HADOOP_DOMAINNAME_RESOLVER_IMPL =
@ -483,21 +469,4 @@ public class CommonConfigurationKeys extends CommonConfigurationKeysPublic {
   * default hadoop temp dir on local system: {@value}.
   */
  public static final String HADOOP_TMP_DIR = "hadoop.tmp.dir";
-
-  /**
-   * Thread-level IOStats Support.
-   * {@value}
-   */
-  public static final String IOSTATISTICS_THREAD_LEVEL_ENABLED =
-      "fs.iostatistics.thread.level.enabled";
-
-  /**
-   * Default value for Thread-level IOStats Support is true.
-   */
-  public static final boolean IOSTATISTICS_THREAD_LEVEL_ENABLED_DEFAULT =
-      true;
-
-  public static final String HADOOP_SECURITY_RESOLVER_IMPL =
-      "hadoop.security.resolver.impl";
-
 }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
@ -169,11 +169,11 @@ public class CommonConfigurationKeysPublic {

  /**
   * Number of filesystems instances can be created in parallel.
-   * <p>
+   * <p></p>
   * A higher number here does not necessarily improve performance, especially
   * for object stores, where multiple threads may be attempting to create an FS
   * instance for the same URI.
-   * </p>
+   * <p></p>
   * Default value: {@value}.
   */
  public static final String FS_CREATION_PARALLEL_COUNT =
@ -181,9 +181,8 @@ public class CommonConfigurationKeysPublic {

  /**
   * Default value for {@link #FS_CREATION_PARALLEL_COUNT}.
-   * <p>
+   * <p></p>
   * Default value: {@value}.
-   * </p>
   */
  public static final int FS_CREATION_PARALLEL_COUNT_DEFAULT =
      64;
@ -1000,7 +999,6 @@ public class CommonConfigurationKeysPublic {
      String.join(",",
          "secret$",
          "password$",
-          "username$",
          "ssl.keystore.pass$",
          "fs.s3.*[Ss]ecret.?[Kk]ey",
          "fs.s3a.*.server-side-encryption.key",
@ -1055,13 +1053,5 @@ public class CommonConfigurationKeysPublic {
  public static final String HADOOP_HTTP_IDLE_TIMEOUT_MS_KEY =
      "hadoop.http.idle_timeout.ms";
  public static final int HADOOP_HTTP_IDLE_TIMEOUT_MS_DEFAULT = 60000;
-
-  /**
-   * To configure scheduling of server metrics update thread. This config is used to indicate
-   * initial delay and delay between each execution of the metric update runnable thread.
-   */
-  public static final String IPC_SERVER_METRICS_UPDATE_RUNNER_INTERVAL =
-      "ipc.server.metrics.update.runner.interval";
-  public static final int IPC_SERVER_METRICS_UPDATE_RUNNER_INTERVAL_DEFAULT = 5000;
 }

--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonPathCapabilities.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonPathCapabilities.java
@ -163,11 +163,5 @@ public final class CommonPathCapabilities {
  public static final String ETAGS_PRESERVED_IN_RENAME =
      "fs.capability.etags.preserved.in.rename";

-  /**
-   * Does this Filesystem support lease recovery operations such as
-   * {@link LeaseRecoverable#recoverLease(Path)} and {@link LeaseRecoverable#isFileClosed(Path)}}?
-   * Value: {@value}.
-   */
-  public static final String LEASE_RECOVERABLE = "fs.capability.lease.recoverable";

 }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CompositeCrcFileChecksum.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CompositeCrcFileChecksum.java
@ -37,13 +37,7 @@ public class CompositeCrcFileChecksum extends FileChecksum {
  private DataChecksum.Type crcType;
  private int bytesPerCrc;

-  /**
-   * Create a CompositeCrcFileChecksum.
-   *
-   * @param crc crc.
-   * @param crcType crcType.
-   * @param bytesPerCrc bytesPerCrc.
-   */
+  /** Create a CompositeCrcFileChecksum. */
  public CompositeCrcFileChecksum(
      int crc, DataChecksum.Type crcType, int bytesPerCrc) {
    this.crc = crc;
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ContentSummary.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ContentSummary.java
@ -149,31 +149,17 @@ public class ContentSummary extends QuotaUsage implements Writable{
  @Deprecated
  public ContentSummary() {}
  
-  /**
-   *  Constructor, deprecated by ContentSummary.Builder
+  /** Constructor, deprecated by ContentSummary.Builder
   *  This constructor implicitly set spaceConsumed the same as length.
   *  spaceConsumed and length must be set explicitly with
-   *  ContentSummary.Builder.
-   *
-   * @param length length.
-   * @param fileCount file count.
-   * @param directoryCount directory count.
+   *  ContentSummary.Builder
   * */
  @Deprecated
  public ContentSummary(long length, long fileCount, long directoryCount) {
    this(length, fileCount, directoryCount, -1L, length, -1L);
  }

-  /**
-   * Constructor, deprecated by ContentSummary.Builder.
-   *
-   * @param length length.
-   * @param fileCount file count.
-   * @param directoryCount directory count.
-   * @param quota quota.
-   * @param spaceConsumed space consumed.
-   * @param spaceQuota space quota.
-   * */
+  /** Constructor, deprecated by ContentSummary.Builder */
  @Deprecated
  public ContentSummary(
      long length, long fileCount, long directoryCount, long quota,
@ -186,11 +172,7 @@ public class ContentSummary extends QuotaUsage implements Writable{
    setSpaceQuota(spaceQuota);
  }

-  /**
-   * Constructor for ContentSummary.Builder.
-   *
-   * @param builder builder.
-   */
+  /** Constructor for ContentSummary.Builder*/
  private ContentSummary(Builder builder) {
    super(builder);
    this.length = builder.length;
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CreateFlag.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CreateFlag.java
@ -189,8 +189,6 @@ public enum CreateFlag {
  /**
   * Validate the CreateFlag for the append operation. The flag must contain
   * APPEND, and cannot contain OVERWRITE.
-   *
-   * @param flag enum set flag.
   */
  public static void validateForAppend(EnumSet<CreateFlag> flag) {
    validate(flag);
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/DF.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/DF.java
@ -65,10 +65,7 @@ public class DF extends Shell {
    return dirPath;
  }

-  /**
-   * @return a string indicating which filesystem volume we're checking.
-   * @throws IOException raised on errors performing I/O.
-   */
+  /** @return a string indicating which filesystem volume we're checking. */
  public String getFilesystem() throws IOException {
    if (Shell.WINDOWS) {
      this.filesystem = dirFile.getCanonicalPath().substring(0, 2);
@ -103,10 +100,7 @@ public class DF extends Shell {
    return (int) (used * 100.0 / cap);
  }

-  /**
-   * @return the filesystem mount point for the indicated volume.
-   * @throws IOException raised on errors performing I/O.
-   */
+  /** @return the filesystem mount point for the indicated volume */
  public String getMount() throws IOException {
    // Abort early if specified path does not exist
    if (!dirFile.exists()) {
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/DelegationTokenRenewer.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/DelegationTokenRenewer.java
@ -47,11 +47,7 @@ public class DelegationTokenRenewer
    /** @return the renew token. */
    public Token<?> getRenewToken();

-    /**
-     * Set delegation token.
-     * @param <T> generic type T.
-     * @param token token.
-     */
+    /** Set delegation token. */
    public <T extends TokenIdentifier> void setDelegationToken(Token<T> token);
  }

@ -176,11 +172,7 @@ public class DelegationTokenRenewer
  /** Queue to maintain the RenewActions to be processed by the {@link #run()} */
  private volatile DelayQueue<RenewAction<?>> queue = new DelayQueue<RenewAction<?>>();
  
-  /**
-   * For testing purposes.
-   *
-   * @return renew queue length.
-   */
+  /** For testing purposes */
  @VisibleForTesting
  protected int getRenewQueueLength() {
    return queue.size();
@ -219,13 +211,7 @@ public class DelegationTokenRenewer
    }
  }
  
-  /**
-   * Add a renew action to the queue.
-   *
-   * @param <T> generic type T.
-   * @param fs file system.
-   * @return renew action.
-   * */
+  /** Add a renew action to the queue. */
  @SuppressWarnings("static-access")
  public <T extends FileSystem & Renewable> RenewAction<T> addRenewAction(final T fs) {
    synchronized (this) {
@ -245,9 +231,7 @@ public class DelegationTokenRenewer
  /**
   * Remove the associated renew action from the queue
   * 
-   * @param <T> generic type T.
-   * @param fs file system.
-   * @throws IOException raised on errors performing I/O.
+   * @throws IOException
   */
  public <T extends FileSystem & Renewable> void removeRenewAction(
      final T fs) throws IOException {
@ -256,8 +240,9 @@ public class DelegationTokenRenewer
      try {
        action.cancel();
      } catch (InterruptedException ie) {
-        LOG.error("Interrupted while canceling token for {} filesystem.", fs.getUri());
-        LOG.debug("Exception in removeRenewAction.", ie);
+        LOG.error("Interrupted while canceling token for " + fs.getUri()
+            + "filesystem");
+        LOG.debug("Exception in removeRenewAction: {}", ie);
      }
    }
  }
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSBuilder.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSBuilder.java
@ -28,34 +28,6 @@ import org.apache.hadoop.classification.InterfaceStability;
 * The base interface which various FileSystem FileContext Builder
 * interfaces can extend, and which underlying implementations
 * will then implement.
- * <p>
- * HADOOP-16202 expanded the opt() and must() arguments with
- * operator overloading, but HADOOP-18724 identified mapping problems:
- * passing a long value in to {@code opt()} could end up invoking
- * {@code opt(string, double)}, which could then trigger parse failures.
- * <p>
- * To fix this without forcing existing code to break/be recompiled.
- * <ol>
- *   <li>A new method to explicitly set a long value is added:
- *   {@link #optLong(String, long)}
- *   </li>
- *   <li>A new method to explicitly set a double value is added:
- *   {@link #optLong(String, long)}
- *   </li>
- *   <li>
- *     All of {@link #opt(String, long)}, {@link #opt(String, float)} and
- *     {@link #opt(String, double)} invoke {@link #optLong(String, long)}.
- *   </li>
- *   <li>
- *     The same changes have been applied to {@code must()} methods.
- *   </li>
- * </ol>
- *   The forwarding of existing double/float setters to the long setters ensure
- *   that existing code will link, but are guaranteed to always set a long value.
- *   If you need to write code which works correctly with all hadoop releases,
- *   covert the option to a string explicitly and then call {@link #opt(String, String)}
- *   or {@link #must(String, String)} as appropriate.
- *
 * @param <S> Return type on the {@link #build()} call.
 * @param <B> type of builder itself.
 */
@ -65,225 +37,87 @@ public interface FSBuilder<S, B extends FSBuilder<S, B>> {

  /**
   * Set optional Builder parameter.
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   */
  B opt(@Nonnull String key, @Nonnull String value);

  /**
   * Set optional boolean parameter for the Builder.
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
+   *
   * @see #opt(String, String)
   */
-  default B opt(@Nonnull String key, boolean value) {
-    return opt(key, Boolean.toString(value));
-  }
+  B opt(@Nonnull String key, boolean value);

  /**
   * Set optional int parameter for the Builder.
   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   * @see #opt(String, String)
   */
-  default B opt(@Nonnull String key, int value) {
-    return optLong(key, value);
-  }
+  B opt(@Nonnull String key, int value);

  /**
-   * This parameter is converted to a long and passed
-   * to {@link #optLong(String, long)} -all
-   * decimal precision is lost.
+   * Set optional float parameter for the Builder.
   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
-   * @see #opt(String, String)
-   * @deprecated use {@link #optDouble(String, double)}
-   */
-  @Deprecated
-  default B opt(@Nonnull String key, float value) {
-    return optLong(key, (long) value);
-  }
-
-  /**
-   * Set optional long parameter for the Builder.
-   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
-   * @deprecated use  {@link #optLong(String, long)} where possible.
-   */
-  default B opt(@Nonnull String key, long value) {
-    return optLong(key, value);
-  }
-
-  /**
-   * Pass an optional double parameter for the Builder.
-   * This parameter is converted to a long and passed
-   * to {@link #optLong(String, long)} -all
-   * decimal precision is lost.
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
-   * @see #opt(String, String)
-   * @deprecated use {@link #optDouble(String, double)}
-   */
-  @Deprecated
-  default B opt(@Nonnull String key, double value) {
-    return optLong(key, (long) value);
-  }
-
-  /**
-   * Set an array of string values as optional parameter for the Builder.
-   *
-   * @param key key.
-   * @param values values.
-   * @return generic type B.
   * @see #opt(String, String)
   */
-  B opt(@Nonnull String key, @Nonnull String... values);
-
-  /**
-   * Set optional long parameter for the Builder.
-   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
-   * @see #opt(String, String)
-   */
-  default B optLong(@Nonnull String key, long value) {
-    return opt(key, Long.toString(value));
-  }
+  B opt(@Nonnull String key, float value);

  /**
   * Set optional double parameter for the Builder.
   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   * @see #opt(String, String)
   */
-  default B optDouble(@Nonnull String key, double value) {
-    return opt(key, Double.toString(value));
-  }
+  B opt(@Nonnull String key, double value);
+
+  /**
+   * Set an array of string values as optional parameter for the Builder.
+   *
+   * @see #opt(String, String)
+   */
+  B opt(@Nonnull String key, @Nonnull String... values);

  /**
   * Set mandatory option to the Builder.
   *
   * If the option is not supported or unavailable,
   * the client should expect {@link #build()} throws IllegalArgumentException.
-   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   */
  B must(@Nonnull String key, @Nonnull String value);

  /**
   * Set mandatory boolean option.
   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   * @see #must(String, String)
   */
-  default B must(@Nonnull String key, boolean value) {
-    return must(key, Boolean.toString(value));
-  }
+  B must(@Nonnull String key, boolean value);

  /**
   * Set mandatory int option.
   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   * @see #must(String, String)
   */
-  default B must(@Nonnull String key, int value) {
-    return mustLong(key, value);
-  }
+  B must(@Nonnull String key, int value);

  /**
-   * This parameter is converted to a long and passed
-   * to {@link #mustLong(String, long)} -all
-   * decimal precision is lost.
+   * Set mandatory float option.
   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
-   * @deprecated use {@link #mustDouble(String, double)} to set floating point.
-   */
-  @Deprecated
-  default B must(@Nonnull String key, float value) {
-    return mustLong(key, (long) value);
-  }
-
-  /**
-   * Set mandatory long option.
-   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   * @see #must(String, String)
   */
-  @Deprecated
-  default B must(@Nonnull String key, long value) {
-    return mustLong(key, (long) value);
-  }
+  B must(@Nonnull String key, float value);

  /**
-   * Set mandatory long option, despite passing in a floating
-   * point value.
+   * Set mandatory double option.
   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
   * @see #must(String, String)
   */
-  @Deprecated
-  default B must(@Nonnull String key, double value) {
-    return mustLong(key, (long) value);
-  }
+  B must(@Nonnull String key, double value);

  /**
   * Set a string array as mandatory option.
   *
-   * @param key key.
-   * @param values values.
-   * @return generic type B.
   * @see #must(String, String)
   */
  B must(@Nonnull String key, @Nonnull String... values);

-  /**
-   * Set mandatory long parameter for the Builder.
-   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
-   * @see #opt(String, String)
-   */
-  default B mustLong(@Nonnull String key, long value) {
-    return must(key, Long.toString(value));
-  }
-
-  /**
-   * Set mandatory double parameter for the Builder.
-   *
-   * @param key key.
-   * @param value value.
-   * @return generic type B.
-   * @see #opt(String, String)
-   */
-  default B mustDouble(@Nonnull String key, double value) {
-    return must(key, Double.toString(value));
-  }
-
  /**
   * Instantiate the object which was being built.
   *
@ -291,7 +125,6 @@ public interface FSBuilder<S, B extends FSBuilder<S, B>> {
   * @throws UnsupportedOperationException if the filesystem does not support
   * the specific operation.
   * @throws IOException on filesystem IO errors.
-   * @return generic type S.
   */
  S build() throws IllegalArgumentException,
      UnsupportedOperationException, IOException;
--- a/Show More
+++ b/Show More