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Posted to common-commits@hadoop.apache.org by xy...@apache.org on 2018/05/14 17:44:48 UTC
[45/50] [abbrv] hadoop git commit: Add 2.9.1 release notes and
changes documents
Add 2.9.1 release notes and changes documents
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/7192749c
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/7192749c
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/7192749c
Branch: refs/heads/HDDS-4
Commit: 7192749c8b5d95313e8575c6875846c698632673
Parents: 187a00f
Author: Sammi Chen <sa...@intel.com>
Authored: Mon May 14 15:14:02 2018 +0800
Committer: Xiaoyu Yao <xy...@apache.org>
Committed: Mon May 14 10:31:09 2018 -0700
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.../markdown/release/2.9.1/CHANGES.2.9.1.md | 277 ++++++++++++++++
.../release/2.9.1/RELEASENOTES.2.9.1.md | 88 ++++++
.../jdiff/Apache_Hadoop_HDFS_2.9.1.xml | 312 +++++++++++++++++++
hadoop-project-dist/pom.xml | 2 +-
4 files changed, 678 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/7192749c/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/CHANGES.2.9.1.md
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diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/CHANGES.2.9.1.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/CHANGES.2.9.1.md
new file mode 100644
index 0000000..c5e53f6
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+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/CHANGES.2.9.1.md
@@ -0,0 +1,277 @@
+
+<!---
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+-->
+# "Apache Hadoop" Changelog
+
+## Release 2.9.1 - 2018-04-16
+
+### INCOMPATIBLE CHANGES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HDFS-12883](https://issues.apache.org/jira/browse/HDFS-12883) | RBF: Document Router and State Store metrics | Major | documentation | Yiqun Lin | Yiqun Lin |
+| [HDFS-12895](https://issues.apache.org/jira/browse/HDFS-12895) | RBF: Add ACL support for mount table | Major | . | Yiqun Lin | Yiqun Lin |
+| [YARN-7190](https://issues.apache.org/jira/browse/YARN-7190) | Ensure only NM classpath in 2.x gets TSv2 related hbase jars, not the user classpath | Major | timelineclient, timelinereader, timelineserver | Vrushali C | Varun Saxena |
+| [HDFS-13099](https://issues.apache.org/jira/browse/HDFS-13099) | RBF: Use the ZooKeeper as the default State Store | Minor | documentation | Yiqun Lin | Yiqun Lin |
+
+
+### IMPORTANT ISSUES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HDFS-13083](https://issues.apache.org/jira/browse/HDFS-13083) | RBF: Fix doc error setting up client | Major | federation | tartarus | tartarus |
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-12756](https://issues.apache.org/jira/browse/HADOOP-12756) | Incorporate Aliyun OSS file system implementation | Major | fs, fs/oss | shimingfei | mingfei.shi |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-14872](https://issues.apache.org/jira/browse/HADOOP-14872) | CryptoInputStream should implement unbuffer | Major | fs, security | John Zhuge | John Zhuge |
+| [HADOOP-14964](https://issues.apache.org/jira/browse/HADOOP-14964) | AliyunOSS: backport Aliyun OSS module to branch-2 | Major | fs/oss | Genmao Yu | SammiChen |
+| [YARN-6851](https://issues.apache.org/jira/browse/YARN-6851) | Capacity Scheduler: document configs for controlling # containers allowed to be allocated per node heartbeat | Minor | . | Wei Yan | Wei Yan |
+| [YARN-7495](https://issues.apache.org/jira/browse/YARN-7495) | Improve robustness of the AggregatedLogDeletionService | Major | log-aggregation | Jonathan Eagles | Jonathan Eagles |
+| [YARN-7611](https://issues.apache.org/jira/browse/YARN-7611) | Node manager web UI should display container type in containers page | Major | nodemanager, webapp | Weiwei Yang | Weiwei Yang |
+| [HADOOP-15056](https://issues.apache.org/jira/browse/HADOOP-15056) | Fix TestUnbuffer#testUnbufferException failure | Minor | test | Jack Bearden | Jack Bearden |
+| [HADOOP-15012](https://issues.apache.org/jira/browse/HADOOP-15012) | Add readahead, dropbehind, and unbuffer to StreamCapabilities | Major | fs | John Zhuge | John Zhuge |
+| [HADOOP-15104](https://issues.apache.org/jira/browse/HADOOP-15104) | AliyunOSS: change the default value of max error retry | Major | fs/oss | wujinhu | wujinhu |
+| [YARN-7642](https://issues.apache.org/jira/browse/YARN-7642) | Add test case to verify context update after container promotion or demotion with or without auto update | Minor | nodemanager | Weiwei Yang | Weiwei Yang |
+| [HADOOP-15111](https://issues.apache.org/jira/browse/HADOOP-15111) | AliyunOSS: backport HADOOP-14993 to branch-2 | Major | fs/oss | Genmao Yu | Genmao Yu |
+| [HDFS-9023](https://issues.apache.org/jira/browse/HDFS-9023) | When NN is not able to identify DN for replication, reason behind it can be logged | Critical | hdfs-client, namenode | Surendra Singh Lilhore | Xiao Chen |
+| [YARN-7678](https://issues.apache.org/jira/browse/YARN-7678) | Ability to enable logging of container memory stats | Major | nodemanager | Jim Brennan | Jim Brennan |
+| [HDFS-12945](https://issues.apache.org/jira/browse/HDFS-12945) | Switch to ClientProtocol instead of NamenodeProtocols in NamenodeWebHdfsMethods | Minor | . | Wei Yan | Wei Yan |
+| [YARN-7590](https://issues.apache.org/jira/browse/YARN-7590) | Improve container-executor validation check | Major | security, yarn | Eric Yang | Eric Yang |
+| [HADOOP-15189](https://issues.apache.org/jira/browse/HADOOP-15189) | backport HADOOP-15039 to branch-2 and branch-3 | Blocker | . | Genmao Yu | Genmao Yu |
+| [HADOOP-15212](https://issues.apache.org/jira/browse/HADOOP-15212) | Add independent secret manager method for logging expired tokens | Major | security | Daryn Sharp | Daryn Sharp |
+| [YARN-7728](https://issues.apache.org/jira/browse/YARN-7728) | Expose container preemptions related information in Capacity Scheduler queue metrics | Major | . | Eric Payne | Eric Payne |
+| [MAPREDUCE-7048](https://issues.apache.org/jira/browse/MAPREDUCE-7048) | Uber AM can crash due to unknown task in statusUpdate | Major | mr-am | Peter Bacsko | Peter Bacsko |
+| [HADOOP-13972](https://issues.apache.org/jira/browse/HADOOP-13972) | ADLS to support per-store configuration | Major | fs/adl | John Zhuge | Sharad Sonker |
+| [YARN-7813](https://issues.apache.org/jira/browse/YARN-7813) | Capacity Scheduler Intra-queue Preemption should be configurable for each queue | Major | capacity scheduler, scheduler preemption | Eric Payne | Eric Payne |
+| [HDFS-11187](https://issues.apache.org/jira/browse/HDFS-11187) | Optimize disk access for last partial chunk checksum of Finalized replica | Major | datanode | Wei-Chiu Chuang | Gabor Bota |
+| [HADOOP-15279](https://issues.apache.org/jira/browse/HADOOP-15279) | increase maven heap size recommendations | Minor | build, documentation, test | Allen Wittenauer | Allen Wittenauer |
+| [HDFS-12884](https://issues.apache.org/jira/browse/HDFS-12884) | BlockUnderConstructionFeature.truncateBlock should be of type BlockInfo | Major | namenode | Konstantin Shvachko | chencan |
+| [HADOOP-15334](https://issues.apache.org/jira/browse/HADOOP-15334) | Upgrade Maven surefire plugin | Major | build | Arpit Agarwal | Arpit Agarwal |
+| [YARN-7623](https://issues.apache.org/jira/browse/YARN-7623) | Fix the CapacityScheduler Queue configuration documentation | Major | . | Arun Suresh | Jonathan Hung |
+| [HDFS-13314](https://issues.apache.org/jira/browse/HDFS-13314) | NameNode should optionally exit if it detects FsImage corruption | Major | namenode | Arpit Agarwal | Arpit Agarwal |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-13723](https://issues.apache.org/jira/browse/HADOOP-13723) | AliyunOSSInputStream#read() should update read bytes stat correctly | Major | tools | Mingliang Liu | Mingliang Liu |
+| [HADOOP-14045](https://issues.apache.org/jira/browse/HADOOP-14045) | Aliyun OSS documentation missing from website | Major | documentation, fs/oss | Andrew Wang | Yiqun Lin |
+| [HADOOP-14458](https://issues.apache.org/jira/browse/HADOOP-14458) | Add missing imports to TestAliyunOSSFileSystemContract.java | Trivial | fs/oss, test | Mingliang Liu | Mingliang Liu |
+| [HADOOP-14466](https://issues.apache.org/jira/browse/HADOOP-14466) | Remove useless document from TestAliyunOSSFileSystemContract.java | Minor | documentation | Akira Ajisaka | Chen Liang |
+| [HDFS-12318](https://issues.apache.org/jira/browse/HDFS-12318) | Fix IOException condition for openInfo in DFSInputStream | Major | . | legend | legend |
+| [HDFS-12614](https://issues.apache.org/jira/browse/HDFS-12614) | FSPermissionChecker#getINodeAttrs() throws NPE when INodeAttributesProvider configured | Major | . | Manoj Govindassamy | Manoj Govindassamy |
+| [HDFS-12788](https://issues.apache.org/jira/browse/HDFS-12788) | Reset the upload button when file upload fails | Critical | ui, webhdfs | Brahma Reddy Battula | Brahma Reddy Battula |
+| [YARN-7388](https://issues.apache.org/jira/browse/YARN-7388) | TestAMRestart should be scheduler agnostic | Major | . | Haibo Chen | Haibo Chen |
+| [HDFS-12705](https://issues.apache.org/jira/browse/HDFS-12705) | WebHdfsFileSystem exceptions should retain the caused by exception | Major | hdfs | Daryn Sharp | Hanisha Koneru |
+| [YARN-7361](https://issues.apache.org/jira/browse/YARN-7361) | Improve the docker container runtime documentation | Major | . | Shane Kumpf | Shane Kumpf |
+| [YARN-7469](https://issues.apache.org/jira/browse/YARN-7469) | Capacity Scheduler Intra-queue preemption: User can starve if newest app is exactly at user limit | Major | capacity scheduler, yarn | Eric Payne | Eric Payne |
+| [YARN-7489](https://issues.apache.org/jira/browse/YARN-7489) | ConcurrentModificationException in RMAppImpl#getRMAppMetrics | Major | capacityscheduler | Tao Yang | Tao Yang |
+| [YARN-7525](https://issues.apache.org/jira/browse/YARN-7525) | Incorrect query parameters in cluster nodes REST API document | Minor | documentation | Tao Yang | Tao Yang |
+| [HADOOP-15045](https://issues.apache.org/jira/browse/HADOOP-15045) | ISA-L build options are documented in branch-2 | Major | build, documentation | Akira Ajisaka | Akira Ajisaka |
+| [YARN-7390](https://issues.apache.org/jira/browse/YARN-7390) | All reservation related test cases failed when TestYarnClient runs against Fair Scheduler. | Major | fairscheduler, reservation system | Yufei Gu | Yufei Gu |
+| [HDFS-12754](https://issues.apache.org/jira/browse/HDFS-12754) | Lease renewal can hit a deadlock | Major | . | Kuhu Shukla | Kuhu Shukla |
+| [HDFS-12832](https://issues.apache.org/jira/browse/HDFS-12832) | INode.getFullPathName may throw ArrayIndexOutOfBoundsException lead to NameNode exit | Critical | namenode | DENG FEI | Konstantin Shvachko |
+| [HDFS-11754](https://issues.apache.org/jira/browse/HDFS-11754) | Make FsServerDefaults cache configurable. | Minor | . | Rushabh S Shah | Mikhail Erofeev |
+| [YARN-7509](https://issues.apache.org/jira/browse/YARN-7509) | AsyncScheduleThread and ResourceCommitterService are still running after RM is transitioned to standby | Critical | . | Tao Yang | Tao Yang |
+| [YARN-7558](https://issues.apache.org/jira/browse/YARN-7558) | "yarn logs" command fails to get logs for running containers if UI authentication is enabled. | Critical | . | Namit Maheshwari | Xuan Gong |
+| [HDFS-12638](https://issues.apache.org/jira/browse/HDFS-12638) | Delete copy-on-truncate block along with the original block, when deleting a file being truncated | Blocker | hdfs | Jiandan Yang | Konstantin Shvachko |
+| [MAPREDUCE-5124](https://issues.apache.org/jira/browse/MAPREDUCE-5124) | AM lacks flow control for task events | Major | mr-am | Jason Lowe | Peter Bacsko |
+| [YARN-7455](https://issues.apache.org/jira/browse/YARN-7455) | quote\_and\_append\_arg can overflow buffer | Major | nodemanager | Jason Lowe | Jim Brennan |
+| [HADOOP-14985](https://issues.apache.org/jira/browse/HADOOP-14985) | Remove subversion related code from VersionInfoMojo.java | Minor | build | Akira Ajisaka | Ajay Kumar |
+| [HDFS-12889](https://issues.apache.org/jira/browse/HDFS-12889) | Router UI is missing robots.txt file | Major | . | Bharat Viswanadham | Bharat Viswanadham |
+| [HDFS-11576](https://issues.apache.org/jira/browse/HDFS-11576) | Block recovery will fail indefinitely if recovery time \> heartbeat interval | Critical | datanode, hdfs, namenode | Lukas Majercak | Lukas Majercak |
+| [YARN-7607](https://issues.apache.org/jira/browse/YARN-7607) | Remove the trailing duplicated timestamp in container diagnostics message | Minor | nodemanager | Weiwei Yang | Weiwei Yang |
+| [HADOOP-15080](https://issues.apache.org/jira/browse/HADOOP-15080) | Aliyun OSS: update oss sdk from 2.8.1 to 2.8.3 to remove its dependency on Cat-x "json-lib" | Blocker | fs/oss | Chris Douglas | SammiChen |
+| [YARN-7591](https://issues.apache.org/jira/browse/YARN-7591) | NPE in async-scheduling mode of CapacityScheduler | Critical | capacityscheduler | Tao Yang | Tao Yang |
+| [YARN-7608](https://issues.apache.org/jira/browse/YARN-7608) | Incorrect sTarget column causing DataTable warning on RM application and scheduler web page | Major | resourcemanager, webapp | Weiwei Yang | Gergely Novák |
+| [HDFS-12833](https://issues.apache.org/jira/browse/HDFS-12833) | Distcp : Update the usage of delete option for dependency with update and overwrite option | Minor | distcp, hdfs | Harshakiran Reddy | usharani |
+| [YARN-7647](https://issues.apache.org/jira/browse/YARN-7647) | NM print inappropriate error log when node-labels is enabled | Minor | . | Yang Wang | Yang Wang |
+| [HDFS-12907](https://issues.apache.org/jira/browse/HDFS-12907) | Allow read-only access to reserved raw for non-superusers | Major | namenode | Daryn Sharp | Rushabh S Shah |
+| [HDFS-12881](https://issues.apache.org/jira/browse/HDFS-12881) | Output streams closed with IOUtils suppressing write errors | Major | . | Jason Lowe | Ajay Kumar |
+| [YARN-7595](https://issues.apache.org/jira/browse/YARN-7595) | Container launching code suppresses close exceptions after writes | Major | nodemanager | Jason Lowe | Jim Brennan |
+| [HADOOP-15085](https://issues.apache.org/jira/browse/HADOOP-15085) | Output streams closed with IOUtils suppressing write errors | Major | . | Jason Lowe | Jim Brennan |
+| [YARN-7661](https://issues.apache.org/jira/browse/YARN-7661) | NodeManager metrics return wrong value after update node resource | Major | . | Yang Wang | Yang Wang |
+| [HDFS-12347](https://issues.apache.org/jira/browse/HDFS-12347) | TestBalancerRPCDelay#testBalancerRPCDelay fails very frequently | Critical | test | Xiao Chen | Bharat Viswanadham |
+| [YARN-7542](https://issues.apache.org/jira/browse/YARN-7542) | Fix issue that causes some Running Opportunistic Containers to be recovered as PAUSED | Major | . | Arun Suresh | Sampada Dehankar |
+| [HADOOP-15143](https://issues.apache.org/jira/browse/HADOOP-15143) | NPE due to Invalid KerberosTicket in UGI | Major | . | Jitendra Nath Pandey | Mukul Kumar Singh |
+| [YARN-7692](https://issues.apache.org/jira/browse/YARN-7692) | Skip validating priority acls while recovering applications | Blocker | resourcemanager | Charan Hebri | Sunil G |
+| [MAPREDUCE-7028](https://issues.apache.org/jira/browse/MAPREDUCE-7028) | Concurrent task progress updates causing NPE in Application Master | Blocker | mr-am | Gergo Repas | Gergo Repas |
+| [YARN-7619](https://issues.apache.org/jira/browse/YARN-7619) | Max AM Resource value in Capacity Scheduler UI has to be refreshed for every user | Major | capacity scheduler, yarn | Eric Payne | Eric Payne |
+| [YARN-7699](https://issues.apache.org/jira/browse/YARN-7699) | queueUsagePercentage is coming as INF for getApp REST api call | Major | webapp | Sunil G | Sunil G |
+| [YARN-7508](https://issues.apache.org/jira/browse/YARN-7508) | NPE in FiCaSchedulerApp when debug log enabled in async-scheduling mode | Major | capacityscheduler | Tao Yang | Tao Yang |
+| [YARN-7663](https://issues.apache.org/jira/browse/YARN-7663) | RMAppImpl:Invalid event: START at KILLED | Minor | resourcemanager | lujie | lujie |
+| [YARN-6948](https://issues.apache.org/jira/browse/YARN-6948) | Invalid event: ATTEMPT\_ADDED at FINAL\_SAVING | Minor | yarn | lujie | lujie |
+| [YARN-7735](https://issues.apache.org/jira/browse/YARN-7735) | Fix typo in YARN documentation | Minor | documentation | Takanobu Asanuma | Takanobu Asanuma |
+| [YARN-7727](https://issues.apache.org/jira/browse/YARN-7727) | Incorrect log levels in few logs with QueuePriorityContainerCandidateSelector | Minor | yarn | Prabhu Joseph | Prabhu Joseph |
+| [HDFS-11915](https://issues.apache.org/jira/browse/HDFS-11915) | Sync rbw dir on the first hsync() to avoid file lost on power failure | Critical | . | Kanaka Kumar Avvaru | Vinayakumar B |
+| [HDFS-9049](https://issues.apache.org/jira/browse/HDFS-9049) | Make Datanode Netty reverse proxy port to be configurable | Major | datanode | Vinayakumar B | Vinayakumar B |
+| [HADOOP-15150](https://issues.apache.org/jira/browse/HADOOP-15150) | in FsShell, UGI params should be overidden through env vars(-D arg) | Major | . | Brahma Reddy Battula | Brahma Reddy Battula |
+| [HADOOP-15181](https://issues.apache.org/jira/browse/HADOOP-15181) | Typo in SecureMode.md | Trivial | documentation | Masahiro Tanaka | Masahiro Tanaka |
+| [YARN-7737](https://issues.apache.org/jira/browse/YARN-7737) | prelaunch.err file not found exception on container failure | Major | . | Jonathan Hung | Keqiu Hu |
+| [HDFS-13063](https://issues.apache.org/jira/browse/HDFS-13063) | Fix the incorrect spelling in HDFSHighAvailabilityWithQJM.md | Trivial | documentation | Jianfei Jiang | Jianfei Jiang |
+| [YARN-7102](https://issues.apache.org/jira/browse/YARN-7102) | NM heartbeat stuck when responseId overflows MAX\_INT | Critical | . | Botong Huang | Botong Huang |
+| [HADOOP-15151](https://issues.apache.org/jira/browse/HADOOP-15151) | MapFile.fix creates a wrong index file in case of block-compressed data file. | Major | common | Grigori Rybkine | Grigori Rybkine |
+| [MAPREDUCE-7020](https://issues.apache.org/jira/browse/MAPREDUCE-7020) | Task timeout in uber mode can crash AM | Major | mr-am | Akira Ajisaka | Peter Bacsko |
+| [YARN-7698](https://issues.apache.org/jira/browse/YARN-7698) | A misleading variable's name in ApplicationAttemptEventDispatcher | Minor | resourcemanager | Jinjiang Ling | Jinjiang Ling |
+| [HDFS-13100](https://issues.apache.org/jira/browse/HDFS-13100) | Handle IllegalArgumentException when GETSERVERDEFAULTS is not implemented in webhdfs. | Critical | hdfs, webhdfs | Yongjun Zhang | Yongjun Zhang |
+| [YARN-6868](https://issues.apache.org/jira/browse/YARN-6868) | Add test scope to certain entries in hadoop-yarn-server-resourcemanager pom.xml | Major | yarn | Ray Chiang | Ray Chiang |
+| [YARN-7849](https://issues.apache.org/jira/browse/YARN-7849) | TestMiniYarnClusterNodeUtilization#testUpdateNodeUtilization fails due to heartbeat sync error | Major | test | Jason Lowe | Botong Huang |
+| [YARN-7801](https://issues.apache.org/jira/browse/YARN-7801) | AmFilterInitializer should addFilter after fill all parameters | Critical | . | Sumana Sathish | Wangda Tan |
+| [YARN-7890](https://issues.apache.org/jira/browse/YARN-7890) | NPE during container relaunch | Major | . | Billie Rinaldi | Jason Lowe |
+| [HDFS-12935](https://issues.apache.org/jira/browse/HDFS-12935) | Get ambiguous result for DFSAdmin command in HA mode when only one namenode is up | Major | tools | Jianfei Jiang | Jianfei Jiang |
+| [HDFS-13120](https://issues.apache.org/jira/browse/HDFS-13120) | Snapshot diff could be corrupted after concat | Major | namenode, snapshots | Xiaoyu Yao | Xiaoyu Yao |
+| [HDFS-10453](https://issues.apache.org/jira/browse/HDFS-10453) | ReplicationMonitor thread could stuck for long time due to the race between replication and delete of same file in a large cluster. | Major | namenode | He Xiaoqiao | He Xiaoqiao |
+| [HDFS-8693](https://issues.apache.org/jira/browse/HDFS-8693) | refreshNamenodes does not support adding a new standby to a running DN | Critical | datanode, ha | Jian Fang | Ajith S |
+| [MAPREDUCE-7052](https://issues.apache.org/jira/browse/MAPREDUCE-7052) | TestFixedLengthInputFormat#testFormatCompressedIn is flaky | Major | client, test | Peter Bacsko | Peter Bacsko |
+| [HDFS-13112](https://issues.apache.org/jira/browse/HDFS-13112) | Token expiration edits may cause log corruption or deadlock | Critical | namenode | Daryn Sharp | Daryn Sharp |
+| [MAPREDUCE-7053](https://issues.apache.org/jira/browse/MAPREDUCE-7053) | Timed out tasks can fail to produce thread dump | Major | . | Jason Lowe | Jason Lowe |
+| [HADOOP-15206](https://issues.apache.org/jira/browse/HADOOP-15206) | BZip2 drops and duplicates records when input split size is small | Major | . | Aki Tanaka | Aki Tanaka |
+| [YARN-7947](https://issues.apache.org/jira/browse/YARN-7947) | Capacity Scheduler intra-queue preemption can NPE for non-schedulable apps | Major | capacity scheduler, scheduler preemption | Eric Payne | Eric Payne |
+| [YARN-7945](https://issues.apache.org/jira/browse/YARN-7945) | Java Doc error in UnmanagedAMPoolManager for branch-2 | Major | . | Rohith Sharma K S | Botong Huang |
+| [HADOOP-14903](https://issues.apache.org/jira/browse/HADOOP-14903) | Add json-smart explicitly to pom.xml | Major | common | Ray Chiang | Ray Chiang |
+| [HDFS-12781](https://issues.apache.org/jira/browse/HDFS-12781) | After Datanode down, In Namenode UI Datanode tab is throwing warning message. | Major | datanode | Harshakiran Reddy | Brahma Reddy Battula |
+| [HDFS-12070](https://issues.apache.org/jira/browse/HDFS-12070) | Failed block recovery leaves files open indefinitely and at risk for data loss | Major | . | Daryn Sharp | Kihwal Lee |
+| [HADOOP-15251](https://issues.apache.org/jira/browse/HADOOP-15251) | Backport HADOOP-13514 (surefire upgrade) to branch-2 | Major | test | Chris Douglas | Chris Douglas |
+| [HADOOP-15275](https://issues.apache.org/jira/browse/HADOOP-15275) | Incorrect javadoc for return type of RetryPolicy#shouldRetry | Minor | documentation | Nanda kumar | Nanda kumar |
+| [YARN-7511](https://issues.apache.org/jira/browse/YARN-7511) | NPE in ContainerLocalizer when localization failed for running container | Major | nodemanager | Tao Yang | Tao Yang |
+| [MAPREDUCE-7023](https://issues.apache.org/jira/browse/MAPREDUCE-7023) | TestHadoopArchiveLogs.testCheckFilesAndSeedApps fails on rerun | Minor | test | Gergely Novák | Gergely Novák |
+| [HADOOP-15283](https://issues.apache.org/jira/browse/HADOOP-15283) | Upgrade from findbugs 3.0.1 to spotbugs 3.1.2 in branch-2 to fix docker image build | Major | . | Xiao Chen | Akira Ajisaka |
+| [YARN-7736](https://issues.apache.org/jira/browse/YARN-7736) | Fix itemization in YARN federation document | Minor | documentation | Akira Ajisaka | Sen Zhao |
+| [HDFS-13164](https://issues.apache.org/jira/browse/HDFS-13164) | File not closed if streamer fail with DSQuotaExceededException | Major | hdfs-client | Xiao Chen | Xiao Chen |
+| [HDFS-13109](https://issues.apache.org/jira/browse/HDFS-13109) | Support fully qualified hdfs path in EZ commands | Major | hdfs | Hanisha Koneru | Hanisha Koneru |
+| [MAPREDUCE-6930](https://issues.apache.org/jira/browse/MAPREDUCE-6930) | mapreduce.map.cpu.vcores and mapreduce.reduce.cpu.vcores are both present twice in mapred-default.xml | Major | mrv2 | Daniel Templeton | Sen Zhao |
+| [HDFS-12156](https://issues.apache.org/jira/browse/HDFS-12156) | TestFSImage fails without -Pnative | Major | test | Akira Ajisaka | Akira Ajisaka |
+| [HADOOP-15308](https://issues.apache.org/jira/browse/HADOOP-15308) | TestConfiguration fails on Windows because of paths | Major | . | Íñigo Goiri | Xiao Liang |
+| [YARN-7636](https://issues.apache.org/jira/browse/YARN-7636) | Re-reservation count may overflow when cluster resource exhausted for a long time | Major | capacityscheduler | Tao Yang | Tao Yang |
+| [HDFS-12886](https://issues.apache.org/jira/browse/HDFS-12886) | Ignore minReplication for block recovery | Major | hdfs, namenode | Lukas Majercak | Lukas Majercak |
+| [HDFS-13296](https://issues.apache.org/jira/browse/HDFS-13296) | GenericTestUtils generates paths with drive letter in Windows and fail webhdfs related test cases | Major | . | Xiao Liang | Xiao Liang |
+| [HDFS-13268](https://issues.apache.org/jira/browse/HDFS-13268) | TestWebHdfsFileContextMainOperations fails on Windows | Major | . | Íñigo Goiri | Xiao Liang |
+| [YARN-8054](https://issues.apache.org/jira/browse/YARN-8054) | Improve robustness of the LocalDirsHandlerService MonitoringTimerTask thread | Major | . | Jonathan Eagles | Jonathan Eagles |
+| [YARN-7873](https://issues.apache.org/jira/browse/YARN-7873) | Revert YARN-6078 | Blocker | . | Billie Rinaldi | Billie Rinaldi |
+| [HDFS-13195](https://issues.apache.org/jira/browse/HDFS-13195) | DataNode conf page cannot display the current value after reconfig | Minor | datanode | maobaolong | maobaolong |
+| [HADOOP-15320](https://issues.apache.org/jira/browse/HADOOP-15320) | Remove customized getFileBlockLocations for hadoop-azure and hadoop-azure-datalake | Major | fs/adl, fs/azure | shanyu zhao | shanyu zhao |
+| [HADOOP-12862](https://issues.apache.org/jira/browse/HADOOP-12862) | LDAP Group Mapping over SSL can not specify trust store | Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
+| [HDFS-13427](https://issues.apache.org/jira/browse/HDFS-13427) | Fix the section titles of transparent encryption document | Minor | documentation | Akira Ajisaka | Akira Ajisaka |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-14696](https://issues.apache.org/jira/browse/HADOOP-14696) | parallel tests don't work for Windows | Minor | test | Allen Wittenauer | Allen Wittenauer |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-13481](https://issues.apache.org/jira/browse/HADOOP-13481) | User end documents for Aliyun OSS FileSystem | Minor | fs, fs/oss | Genmao Yu | Genmao Yu |
+| [HADOOP-13591](https://issues.apache.org/jira/browse/HADOOP-13591) | Unit test failure in TestOSSContractGetFileStatus and TestOSSContractRootDir | Major | fs, fs/oss | Genmao Yu | Genmao Yu |
+| [HADOOP-13624](https://issues.apache.org/jira/browse/HADOOP-13624) | Rename TestAliyunOSSContractDispCp | Major | fs, fs/oss | Kai Zheng | Genmao Yu |
+| [HADOOP-14065](https://issues.apache.org/jira/browse/HADOOP-14065) | AliyunOSS: oss directory filestatus should use meta time | Major | fs/oss | Fei Hui | Fei Hui |
+| [HADOOP-13768](https://issues.apache.org/jira/browse/HADOOP-13768) | AliyunOSS: handle the failure in the batch delete operation `deleteDirs`. | Major | fs | Genmao Yu | Genmao Yu |
+| [HADOOP-14069](https://issues.apache.org/jira/browse/HADOOP-14069) | AliyunOSS: listStatus returns wrong file info | Major | fs/oss | Fei Hui | Fei Hui |
+| [HADOOP-13769](https://issues.apache.org/jira/browse/HADOOP-13769) | AliyunOSS: update oss sdk version | Major | fs, fs/oss | Genmao Yu | Genmao Yu |
+| [HADOOP-14072](https://issues.apache.org/jira/browse/HADOOP-14072) | AliyunOSS: Failed to read from stream when seek beyond the download size | Major | fs/oss | Genmao Yu | Genmao Yu |
+| [HADOOP-14192](https://issues.apache.org/jira/browse/HADOOP-14192) | Aliyun OSS FileSystem contract test should implement getTestBaseDir() | Major | fs/oss | Mingliang Liu | Mingliang Liu |
+| [HADOOP-14194](https://issues.apache.org/jira/browse/HADOOP-14194) | Aliyun OSS should not use empty endpoint as default | Major | fs/oss | Mingliang Liu | Genmao Yu |
+| [HADOOP-14787](https://issues.apache.org/jira/browse/HADOOP-14787) | AliyunOSS: Implement the `createNonRecursive` operator | Major | fs, fs/oss | Genmao Yu | Genmao Yu |
+| [HADOOP-14649](https://issues.apache.org/jira/browse/HADOOP-14649) | Update aliyun-sdk-oss version to 2.8.1 | Major | fs/oss | Ray Chiang | Genmao Yu |
+| [HADOOP-14799](https://issues.apache.org/jira/browse/HADOOP-14799) | Update nimbus-jose-jwt to 4.41.1 | Major | . | Ray Chiang | Ray Chiang |
+| [HADOOP-14997](https://issues.apache.org/jira/browse/HADOOP-14997) | Add hadoop-aliyun as dependency of hadoop-cloud-storage | Minor | fs/oss | Genmao Yu | Genmao Yu |
+| [HDFS-12801](https://issues.apache.org/jira/browse/HDFS-12801) | RBF: Set MountTableResolver as default file resolver | Minor | . | Íñigo Goiri | Íñigo Goiri |
+| [YARN-7430](https://issues.apache.org/jira/browse/YARN-7430) | Enable user re-mapping for Docker containers by default | Blocker | security, yarn | Eric Yang | Eric Yang |
+| [YARN-6128](https://issues.apache.org/jira/browse/YARN-6128) | Add support for AMRMProxy HA | Major | amrmproxy, nodemanager | Subru Krishnan | Botong Huang |
+| [HADOOP-15024](https://issues.apache.org/jira/browse/HADOOP-15024) | AliyunOSS: support user agent configuration and include that & Hadoop version information to oss server | Major | fs, fs/oss | SammiChen | SammiChen |
+| [HDFS-12858](https://issues.apache.org/jira/browse/HDFS-12858) | RBF: Add router admin commands usage in HDFS commands reference doc | Minor | documentation | Yiqun Lin | Yiqun Lin |
+| [HDFS-12835](https://issues.apache.org/jira/browse/HDFS-12835) | RBF: Fix Javadoc parameter errors | Minor | . | Wei Yan | Wei Yan |
+| [YARN-7587](https://issues.apache.org/jira/browse/YARN-7587) | Skip dispatching opportunistic containers to nodes whose queue is already full | Major | . | Weiwei Yang | Weiwei Yang |
+| [HDFS-12396](https://issues.apache.org/jira/browse/HDFS-12396) | Webhdfs file system should get delegation token from kms provider. | Major | encryption, kms, webhdfs | Rushabh S Shah | Rushabh S Shah |
+| [YARN-6704](https://issues.apache.org/jira/browse/YARN-6704) | Add support for work preserving NM restart when FederationInterceptor is enabled in AMRMProxyService | Major | . | Botong Huang | Botong Huang |
+| [HDFS-12875](https://issues.apache.org/jira/browse/HDFS-12875) | RBF: Complete logic for -readonly option of dfsrouteradmin add command | Major | . | Yiqun Lin | Íñigo Goiri |
+| [YARN-7630](https://issues.apache.org/jira/browse/YARN-7630) | Fix AMRMToken rollover handling in AMRMProxy | Minor | . | Botong Huang | Botong Huang |
+| [HDFS-12937](https://issues.apache.org/jira/browse/HDFS-12937) | RBF: Add more unit tests for router admin commands | Major | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-12988](https://issues.apache.org/jira/browse/HDFS-12988) | RBF: Mount table entries not properly updated in the local cache | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HADOOP-15156](https://issues.apache.org/jira/browse/HADOOP-15156) | backport HADOOP-15086 rename fix to branch-2 | Major | fs/azure | Thomas Marquardt | Thomas Marquardt |
+| [YARN-7716](https://issues.apache.org/jira/browse/YARN-7716) | metricsTimeStart and metricsTimeEnd should be all lower case in the doc | Major | timelinereader | Haibo Chen | Haibo Chen |
+| [HDFS-12802](https://issues.apache.org/jira/browse/HDFS-12802) | RBF: Control MountTableResolver cache size | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HADOOP-15027](https://issues.apache.org/jira/browse/HADOOP-15027) | AliyunOSS: Support multi-thread pre-read to improve sequential read from Hadoop to Aliyun OSS performance | Major | fs/oss | wujinhu | wujinhu |
+| [HDFS-13028](https://issues.apache.org/jira/browse/HDFS-13028) | RBF: Fix spurious TestRouterRpc#testProxyGetStats | Minor | . | Íñigo Goiri | Íñigo Goiri |
+| [YARN-5094](https://issues.apache.org/jira/browse/YARN-5094) | some YARN container events have timestamp of -1 | Critical | . | Sangjin Lee | Haibo Chen |
+| [YARN-7782](https://issues.apache.org/jira/browse/YARN-7782) | Enable user re-mapping for Docker containers in yarn-default.xml | Blocker | security, yarn | Eric Yang | Eric Yang |
+| [HDFS-12772](https://issues.apache.org/jira/browse/HDFS-12772) | RBF: Federation Router State State Store internal API | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-13042](https://issues.apache.org/jira/browse/HDFS-13042) | RBF: Heartbeat Router State | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-13049](https://issues.apache.org/jira/browse/HDFS-13049) | RBF: Inconsistent Router OPTS config in branch-2 and branch-3 | Minor | . | Wei Yan | Wei Yan |
+| [HDFS-12574](https://issues.apache.org/jira/browse/HDFS-12574) | Add CryptoInputStream to WebHdfsFileSystem read call. | Major | encryption, kms, webhdfs | Rushabh S Shah | Rushabh S Shah |
+| [HDFS-13044](https://issues.apache.org/jira/browse/HDFS-13044) | RBF: Add a safe mode for the Router | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-13043](https://issues.apache.org/jira/browse/HDFS-13043) | RBF: Expose the state of the Routers in the federation | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-13068](https://issues.apache.org/jira/browse/HDFS-13068) | RBF: Add router admin option to manage safe mode | Major | . | Íñigo Goiri | Yiqun Lin |
+| [HDFS-13119](https://issues.apache.org/jira/browse/HDFS-13119) | RBF: Manage unavailable clusters | Major | . | Íñigo Goiri | Yiqun Lin |
+| [HDFS-13187](https://issues.apache.org/jira/browse/HDFS-13187) | RBF: Fix Routers information shown in the web UI | Minor | . | Wei Yan | Wei Yan |
+| [HDFS-13184](https://issues.apache.org/jira/browse/HDFS-13184) | RBF: Improve the unit test TestRouterRPCClientRetries | Minor | test | Yiqun Lin | Yiqun Lin |
+| [HDFS-13199](https://issues.apache.org/jira/browse/HDFS-13199) | RBF: Fix the hdfs router page missing label icon issue | Major | federation, hdfs | maobaolong | maobaolong |
+| [HDFS-13214](https://issues.apache.org/jira/browse/HDFS-13214) | RBF: Complete document of Router configuration | Major | . | Tao Jie | Yiqun Lin |
+| [HDFS-13230](https://issues.apache.org/jira/browse/HDFS-13230) | RBF: ConnectionManager's cleanup task will compare each pool's own active conns with its total conns | Minor | . | Wei Yan | Chao Sun |
+| [HDFS-13233](https://issues.apache.org/jira/browse/HDFS-13233) | RBF: MountTableResolver doesn't return the correct mount point of the given path | Major | hdfs | wangzhiyuan | wangzhiyuan |
+| [HDFS-13212](https://issues.apache.org/jira/browse/HDFS-13212) | RBF: Fix router location cache issue | Major | federation, hdfs | Weiwei Wu | Weiwei Wu |
+| [HDFS-13232](https://issues.apache.org/jira/browse/HDFS-13232) | RBF: ConnectionPool should return first usable connection | Minor | . | Wei Yan | Ekanth S |
+| [HDFS-13240](https://issues.apache.org/jira/browse/HDFS-13240) | RBF: Update some inaccurate document descriptions | Minor | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-11399](https://issues.apache.org/jira/browse/HDFS-11399) | Many tests fails in Windows due to injecting disk failures | Major | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-13241](https://issues.apache.org/jira/browse/HDFS-13241) | RBF: TestRouterSafemode failed if the port 8888 is in use | Major | hdfs, test | maobaolong | maobaolong |
+| [HDFS-13253](https://issues.apache.org/jira/browse/HDFS-13253) | RBF: Quota management incorrect parent-child relationship judgement | Major | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-13226](https://issues.apache.org/jira/browse/HDFS-13226) | RBF: Throw the exception if mount table entry validated failed | Major | hdfs | maobaolong | maobaolong |
+| [HDFS-12773](https://issues.apache.org/jira/browse/HDFS-12773) | RBF: Improve State Store FS implementation | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-13198](https://issues.apache.org/jira/browse/HDFS-13198) | RBF: RouterHeartbeatService throws out CachedStateStore related exceptions when starting router | Minor | . | Wei Yan | Wei Yan |
+| [HDFS-13224](https://issues.apache.org/jira/browse/HDFS-13224) | RBF: Resolvers to support mount points across multiple subclusters | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HADOOP-15262](https://issues.apache.org/jira/browse/HADOOP-15262) | AliyunOSS: move files under a directory in parallel when rename a directory | Major | fs/oss | wujinhu | wujinhu |
+| [HDFS-13215](https://issues.apache.org/jira/browse/HDFS-13215) | RBF: Move Router to its own module | Major | . | Íñigo Goiri | Wei Yan |
+| [HDFS-13250](https://issues.apache.org/jira/browse/HDFS-13250) | RBF: Router to manage requests across multiple subclusters | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-13318](https://issues.apache.org/jira/browse/HDFS-13318) | RBF: Fix FindBugs in hadoop-hdfs-rbf | Minor | . | Íñigo Goiri | Ekanth S |
+| [HDFS-12792](https://issues.apache.org/jira/browse/HDFS-12792) | RBF: Test Router-based federation using HDFSContract | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-12512](https://issues.apache.org/jira/browse/HDFS-12512) | RBF: Add WebHDFS | Major | fs | Íñigo Goiri | Wei Yan |
+| [HDFS-13291](https://issues.apache.org/jira/browse/HDFS-13291) | RBF: Implement available space based OrderResolver | Major | . | Yiqun Lin | Yiqun Lin |
+| [HDFS-13204](https://issues.apache.org/jira/browse/HDFS-13204) | RBF: Optimize name service safe mode icon | Minor | . | liuhongtong | liuhongtong |
+| [HDFS-13352](https://issues.apache.org/jira/browse/HDFS-13352) | RBF: Add xsl stylesheet for hdfs-rbf-default.xml | Major | documentation | Takanobu Asanuma | Takanobu Asanuma |
+| [YARN-8010](https://issues.apache.org/jira/browse/YARN-8010) | Add config in FederationRMFailoverProxy to not bypass facade cache when failing over | Minor | . | Botong Huang | Botong Huang |
+| [HDFS-13347](https://issues.apache.org/jira/browse/HDFS-13347) | RBF: Cache datanode reports | Minor | . | Íñigo Goiri | Íñigo Goiri |
+| [HDFS-13289](https://issues.apache.org/jira/browse/HDFS-13289) | RBF: TestConnectionManager#testCleanup() test case need correction | Minor | . | Dibyendu Karmakar | Dibyendu Karmakar |
+| [HDFS-13364](https://issues.apache.org/jira/browse/HDFS-13364) | RBF: Support NamenodeProtocol in the Router | Major | . | Íñigo Goiri | Íñigo Goiri |
+| [HADOOP-14651](https://issues.apache.org/jira/browse/HADOOP-14651) | Update okhttp version to 2.7.5 | Major | fs/adl | Ray Chiang | Ray Chiang |
+| [HADOOP-14999](https://issues.apache.org/jira/browse/HADOOP-14999) | AliyunOSS: provide one asynchronous multi-part based uploading mechanism | Major | fs/oss | Genmao Yu | Genmao Yu |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-15149](https://issues.apache.org/jira/browse/HADOOP-15149) | CryptoOutputStream should implement StreamCapabilities | Major | fs | Mike Drob | Xiao Chen |
+| [YARN-7691](https://issues.apache.org/jira/browse/YARN-7691) | Add Unit Tests for ContainersLauncher | Major | . | Sampada Dehankar | Sampada Dehankar |
+| [HADOOP-15177](https://issues.apache.org/jira/browse/HADOOP-15177) | Update the release year to 2018 | Blocker | build | Akira Ajisaka | Bharat Viswanadham |
+
+
http://git-wip-us.apache.org/repos/asf/hadoop/blob/7192749c/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/RELEASENOTES.2.9.1.md
----------------------------------------------------------------------
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/RELEASENOTES.2.9.1.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/RELEASENOTES.2.9.1.md
new file mode 100644
index 0000000..bed70b1
--- /dev/null
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/RELEASENOTES.2.9.1.md
@@ -0,0 +1,88 @@
+
+<!---
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+-->
+# "Apache Hadoop" 2.9.1 Release Notes
+
+These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.
+
+
+---
+
+* [HADOOP-12756](https://issues.apache.org/jira/browse/HADOOP-12756) | *Major* | **Incorporate Aliyun OSS file system implementation**
+
+Aliyun OSS is widely used among China’s cloud users and this work implemented a new Hadoop compatible filesystem AliyunOSSFileSystem with oss scheme, similar to the s3a and azure support.
+
+
+---
+
+* [HADOOP-14964](https://issues.apache.org/jira/browse/HADOOP-14964) | *Major* | **AliyunOSS: backport Aliyun OSS module to branch-2**
+
+Aliyun OSS is widely used among China’s cloud users and this work implemented a new Hadoop compatible filesystem AliyunOSSFileSystem with oss:// scheme, similar to the s3a and azure support.
+
+
+---
+
+* [HDFS-12883](https://issues.apache.org/jira/browse/HDFS-12883) | *Major* | **RBF: Document Router and State Store metrics**
+
+This JIRA makes following change:
+Change Router metrics context from 'router' to 'dfs'.
+
+
+---
+
+* [HDFS-12895](https://issues.apache.org/jira/browse/HDFS-12895) | *Major* | **RBF: Add ACL support for mount table**
+
+Mount tables support ACL, The users won't be able to modify their own entries (we are assuming these old (no-permissions before) mount table with owner:superuser, group:supergroup, permission:755 as the default permissions). The fix way is login as superuser to modify these mount table entries.
+
+
+---
+
+* [YARN-7190](https://issues.apache.org/jira/browse/YARN-7190) | *Major* | **Ensure only NM classpath in 2.x gets TSv2 related hbase jars, not the user classpath**
+
+Ensure only NM classpath in 2.x gets TSv2 related hbase jars, not the user classpath.
+
+
+---
+
+* [HADOOP-15156](https://issues.apache.org/jira/browse/HADOOP-15156) | *Major* | **backport HADOOP-15086 rename fix to branch-2**
+
+[WASB] Fix Azure implementation of Filesystem.rename to ensure that at most one operation succeeds when there are multiple, concurrent rename operations targeting the same destination file.
+
+
+---
+
+* [HADOOP-15027](https://issues.apache.org/jira/browse/HADOOP-15027) | *Major* | **AliyunOSS: Support multi-thread pre-read to improve sequential read from Hadoop to Aliyun OSS performance**
+
+Support multi-thread pre-read in AliyunOSSInputStream to improve the sequential read performance from Hadoop to Aliyun OSS.
+
+
+---
+
+* [HDFS-13083](https://issues.apache.org/jira/browse/HDFS-13083) | *Major* | **RBF: Fix doc error setting up client**
+
+Fix the document error of setting up HFDS Router Federation
+
+
+---
+
+* [HDFS-13099](https://issues.apache.org/jira/browse/HDFS-13099) | *Minor* | **RBF: Use the ZooKeeper as the default State Store**
+
+Change default State Store from local file to ZooKeeper. This will require additional zk address to be configured.
+
+
+
http://git-wip-us.apache.org/repos/asf/hadoop/blob/7192749c/hadoop-hdfs-project/hadoop-hdfs/dev-support/jdiff/Apache_Hadoop_HDFS_2.9.1.xml
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/dev-support/jdiff/Apache_Hadoop_HDFS_2.9.1.xml b/hadoop-hdfs-project/hadoop-hdfs/dev-support/jdiff/Apache_Hadoop_HDFS_2.9.1.xml
new file mode 100644
index 0000000..a5d87c7
--- /dev/null
+++ b/hadoop-hdfs-project/hadoop-hdfs/dev-support/jdiff/Apache_Hadoop_HDFS_2.9.1.xml
@@ -0,0 +1,312 @@
+<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
+<!-- Generated by the JDiff Javadoc doclet -->
+<!-- (http://www.jdiff.org) -->
+<!-- on Mon Apr 16 12:03:07 UTC 2018 -->
+
+<api
+ xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
+ xsi:noNamespaceSchemaLocation='api.xsd'
+ name="Apache Hadoop HDFS 2.9.1"
+ jdversion="1.0.9">
+
+<!-- Command line arguments = -doclet org.apache.hadoop.classification.tools.IncludePublicAnnotationsJDiffDoclet -docletpath /build/source/hadoop-hdfs-project/hadoop-hdfs/target/hadoop-annotations.jar:/build/source/hadoop-hdfs-project/hadoop-hdfs/target/jdiff.jar -verbose -classpath /build/source/hadoop-hdfs-project/hadoop-hdfs/target/classes:/build/source/hadoop-common-project/hadoop-annotations/target/hadoop-annotations-2.9.1.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar:/build/source/hadoop-common-project/hadoop-auth/target/hadoop-auth-2.9.1.jar:/maven/org/slf4j/slf4j-api/1.7.25/slf4j-api-1.7.25.jar:/maven/org/apache/httpcomponents/httpclient/4.5.2/httpclient-4.5.2.jar:/maven/org/apache/httpcomponents/httpcore/4.4.4/httpcore-4.4.4.jar:/maven/com/nimbusds/nimbus-jose-jwt/4.41.1/nimbus-jose-jwt-4.41.1.jar:/maven/com/github/stephenc/jcip/jcip-annotations/1.0-1/jcip-annotations-1.0-1.jar:/maven/net/minidev/json-smart/1.3.1/json-smart-1.3.1.jar:/maven/org/apache/directory/serv
er/apacheds-kerberos-codec/2.0.0-M15/apacheds-kerberos-codec-2.0.0-M15.jar:/maven/org/apache/directory/server/apacheds-i18n/2.0.0-M15/apacheds-i18n-2.0.0-M15.jar:/maven/org/apache/directory/api/api-asn1-api/1.0.0-M20/api-asn1-api-1.0.0-M20.jar:/maven/org/apache/directory/api/api-util/1.0.0-M20/api-util-1.0.0-M20.jar:/maven/org/apache/zookeeper/zookeeper/3.4.6/zookeeper-3.4.6.jar:/maven/jline/jline/0.9.94/jline-0.9.94.jar:/maven/org/apache/curator/curator-framework/2.7.1/curator-framework-2.7.1.jar:/build/source/hadoop-common-project/hadoop-common/target/hadoop-common-2.9.1.jar:/maven/org/apache/commons/commons-math3/3.1.1/commons-math3-3.1.1.jar:/maven/commons-net/commons-net/3.1/commons-net-3.1.jar:/maven/commons-collections/commons-collections/3.2.2/commons-collections-3.2.2.jar:/maven/org/mortbay/jetty/jetty-sslengine/6.1.26/jetty-sslengine-6.1.26.jar:/maven/javax/servlet/jsp/jsp-api/2.1/jsp-api-2.1.jar:/maven/com/sun/jersey/jersey-json/1.9/jersey-json-1.9.jar:/maven/org/codehaus
/jettison/jettison/1.1/jettison-1.1.jar:/maven/com/sun/xml/bind/jaxb-impl/2.2.3-1/jaxb-impl-2.2.3-1.jar:/maven/javax/xml/bind/jaxb-api/2.2.2/jaxb-api-2.2.2.jar:/maven/javax/xml/stream/stax-api/1.0-2/stax-api-1.0-2.jar:/maven/javax/activation/activation/1.1/activation-1.1.jar:/maven/org/codehaus/jackson/jackson-jaxrs/1.9.13/jackson-jaxrs-1.9.13.jar:/maven/org/codehaus/jackson/jackson-xc/1.9.13/jackson-xc-1.9.13.jar:/maven/net/java/dev/jets3t/jets3t/0.9.0/jets3t-0.9.0.jar:/maven/com/jamesmurty/utils/java-xmlbuilder/0.4/java-xmlbuilder-0.4.jar:/maven/commons-configuration/commons-configuration/1.6/commons-configuration-1.6.jar:/maven/commons-digester/commons-digester/1.8/commons-digester-1.8.jar:/maven/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar:/maven/commons-beanutils/commons-beanutils-core/1.8.0/commons-beanutils-core-1.8.0.jar:/maven/org/apache/commons/commons-lang3/3.4/commons-lang3-3.4.jar:/maven/org/apache/avro/avro/1.7.7/avro-1.7.7.jar:/maven/com/thoug
htworks/paranamer/paranamer/2.3/paranamer-2.3.jar:/maven/org/xerial/snappy/snappy-java/1.0.5/snappy-java-1.0.5.jar:/maven/com/google/code/gson/gson/2.2.4/gson-2.2.4.jar:/maven/com/jcraft/jsch/0.1.54/jsch-0.1.54.jar:/maven/org/apache/curator/curator-client/2.7.1/curator-client-2.7.1.jar:/maven/org/apache/curator/curator-recipes/2.7.1/curator-recipes-2.7.1.jar:/maven/com/google/code/findbugs/jsr305/3.0.0/jsr305-3.0.0.jar:/maven/org/apache/commons/commons-compress/1.4.1/commons-compress-1.4.1.jar:/maven/org/tukaani/xz/1.0/xz-1.0.jar:/maven/org/codehaus/woodstox/stax2-api/3.1.4/stax2-api-3.1.4.jar:/maven/com/fasterxml/woodstox/woodstox-core/5.0.3/woodstox-core-5.0.3.jar:/build/source/hadoop-hdfs-project/hadoop-hdfs-client/target/hadoop-hdfs-client-2.9.1.jar:/maven/com/squareup/okhttp/okhttp/2.7.5/okhttp-2.7.5.jar:/maven/com/squareup/okio/okio/1.6.0/okio-1.6.0.jar:/maven/com/google/guava/guava/11.0.2/guava-11.0.2.jar:/maven/org/mortbay/jetty/jetty/6.1.26/jetty-6.1.26.jar:/maven/org/mortb
ay/jetty/jetty-util/6.1.26/jetty-util-6.1.26.jar:/maven/com/sun/jersey/jersey-core/1.9/jersey-core-1.9.jar:/maven/com/sun/jersey/jersey-server/1.9/jersey-server-1.9.jar:/maven/asm/asm/3.2/asm-3.2.jar:/maven/commons-cli/commons-cli/1.2/commons-cli-1.2.jar:/maven/commons-codec/commons-codec/1.4/commons-codec-1.4.jar:/maven/commons-io/commons-io/2.4/commons-io-2.4.jar:/maven/commons-lang/commons-lang/2.6/commons-lang-2.6.jar:/maven/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar:/maven/commons-daemon/commons-daemon/1.0.13/commons-daemon-1.0.13.jar:/maven/log4j/log4j/1.2.17/log4j-1.2.17.jar:/maven/com/google/protobuf/protobuf-java/2.5.0/protobuf-java-2.5.0.jar:/maven/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar:/maven/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar:/maven/org/codehaus/jackson/jackson-core-asl/1.9.13/jackson-core-asl-1.9.13.jar:/maven/org/codehaus/jackson/jackson-mapper-asl/1.9.13/jackson-mapper-asl-1.9.13.jar:/maven/xmlenc/xmlenc/0.52/xmlenc
-0.52.jar:/maven/io/netty/netty/3.6.2.Final/netty-3.6.2.Final.jar:/maven/io/netty/netty-all/4.0.23.Final/netty-all-4.0.23.Final.jar:/maven/xerces/xercesImpl/2.9.1/xercesImpl-2.9.1.jar:/maven/xml-apis/xml-apis/1.3.04/xml-apis-1.3.04.jar:/maven/org/apache/htrace/htrace-core4/4.1.0-incubating/htrace-core4-4.1.0-incubating.jar:/maven/org/fusesource/leveldbjni/leveldbjni-all/1.8/leveldbjni-all-1.8.jar:/maven/com/fasterxml/jackson/core/jackson-databind/2.7.8/jackson-databind-2.7.8.jar:/maven/com/fasterxml/jackson/core/jackson-annotations/2.7.8/jackson-annotations-2.7.8.jar:/maven/com/fasterxml/jackson/core/jackson-core/2.7.8/jackson-core-2.7.8.jar -sourcepath /build/source/hadoop-hdfs-project/hadoop-hdfs/src/main/java -apidir /build/source/hadoop-hdfs-project/hadoop-hdfs/target/site/jdiff/xml -apiname Apache Hadoop HDFS 2.9.1 -->
+<package name="org.apache.hadoop.hdfs">
+ <doc>
+ <![CDATA[<p>A distributed implementation of {@link
+org.apache.hadoop.fs.FileSystem}. This is loosely modelled after
+Google's <a href="http://research.google.com/archive/gfs.html">GFS</a>.</p>
+
+<p>The most important difference is that unlike GFS, Hadoop DFS files
+have strictly one writer at any one time. Bytes are always appended
+to the end of the writer's stream. There is no notion of "record appends"
+or "mutations" that are then checked or reordered. Writers simply emit
+a byte stream. That byte stream is guaranteed to be stored in the
+order written.</p>]]>
+ </doc>
+</package>
+<package name="org.apache.hadoop.hdfs.net">
+</package>
+<package name="org.apache.hadoop.hdfs.protocol">
+</package>
+<package name="org.apache.hadoop.hdfs.protocol.datatransfer">
+</package>
+<package name="org.apache.hadoop.hdfs.protocol.datatransfer.sasl">
+</package>
+<package name="org.apache.hadoop.hdfs.protocolPB">
+</package>
+<package name="org.apache.hadoop.hdfs.qjournal.client">
+</package>
+<package name="org.apache.hadoop.hdfs.qjournal.protocol">
+</package>
+<package name="org.apache.hadoop.hdfs.qjournal.protocolPB">
+</package>
+<package name="org.apache.hadoop.hdfs.qjournal.server">
+ <!-- start interface org.apache.hadoop.hdfs.qjournal.server.JournalNodeMXBean -->
+ <interface name="JournalNodeMXBean" abstract="true"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <method name="getJournalsStatus" return="java.lang.String"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <doc>
+ <![CDATA[Get status information (e.g., whether formatted) of JournalNode's journals.
+
+ @return A string presenting status for each journal]]>
+ </doc>
+ </method>
+ <doc>
+ <![CDATA[This is the JMX management interface for JournalNode information]]>
+ </doc>
+ </interface>
+ <!-- end interface org.apache.hadoop.hdfs.qjournal.server.JournalNodeMXBean -->
+</package>
+<package name="org.apache.hadoop.hdfs.security.token.block">
+</package>
+<package name="org.apache.hadoop.hdfs.security.token.delegation">
+</package>
+<package name="org.apache.hadoop.hdfs.server.balancer">
+</package>
+<package name="org.apache.hadoop.hdfs.server.blockmanagement">
+</package>
+<package name="org.apache.hadoop.hdfs.server.common">
+</package>
+<package name="org.apache.hadoop.hdfs.server.datanode">
+</package>
+<package name="org.apache.hadoop.hdfs.server.datanode.fsdataset">
+</package>
+<package name="org.apache.hadoop.hdfs.server.datanode.fsdataset.impl">
+</package>
+<package name="org.apache.hadoop.hdfs.server.datanode.metrics">
+</package>
+<package name="org.apache.hadoop.hdfs.server.datanode.web">
+</package>
+<package name="org.apache.hadoop.hdfs.server.datanode.web.webhdfs">
+</package>
+<package name="org.apache.hadoop.hdfs.server.mover">
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode">
+ <!-- start interface org.apache.hadoop.hdfs.server.namenode.AuditLogger -->
+ <interface name="AuditLogger" abstract="true"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <method name="initialize"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
+ <doc>
+ <![CDATA[Called during initialization of the logger.
+
+ @param conf The configuration object.]]>
+ </doc>
+ </method>
+ <method name="logAuditEvent"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="succeeded" type="boolean"/>
+ <param name="userName" type="java.lang.String"/>
+ <param name="addr" type="java.net.InetAddress"/>
+ <param name="cmd" type="java.lang.String"/>
+ <param name="src" type="java.lang.String"/>
+ <param name="dst" type="java.lang.String"/>
+ <param name="stat" type="org.apache.hadoop.fs.FileStatus"/>
+ <doc>
+ <![CDATA[Called to log an audit event.
+ <p>
+ This method must return as quickly as possible, since it's called
+ in a critical section of the NameNode's operation.
+
+ @param succeeded Whether authorization succeeded.
+ @param userName Name of the user executing the request.
+ @param addr Remote address of the request.
+ @param cmd The requested command.
+ @param src Path of affected source file.
+ @param dst Path of affected destination file (if any).
+ @param stat File information for operations that change the file's
+ metadata (permissions, owner, times, etc).]]>
+ </doc>
+ </method>
+ <doc>
+ <![CDATA[Interface defining an audit logger.]]>
+ </doc>
+ </interface>
+ <!-- end interface org.apache.hadoop.hdfs.server.namenode.AuditLogger -->
+ <!-- start class org.apache.hadoop.hdfs.server.namenode.HdfsAuditLogger -->
+ <class name="HdfsAuditLogger" extends="java.lang.Object"
+ abstract="true"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <implements name="org.apache.hadoop.hdfs.server.namenode.AuditLogger"/>
+ <constructor name="HdfsAuditLogger"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ </constructor>
+ <method name="logAuditEvent"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="succeeded" type="boolean"/>
+ <param name="userName" type="java.lang.String"/>
+ <param name="addr" type="java.net.InetAddress"/>
+ <param name="cmd" type="java.lang.String"/>
+ <param name="src" type="java.lang.String"/>
+ <param name="dst" type="java.lang.String"/>
+ <param name="status" type="org.apache.hadoop.fs.FileStatus"/>
+ </method>
+ <method name="logAuditEvent"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="succeeded" type="boolean"/>
+ <param name="userName" type="java.lang.String"/>
+ <param name="addr" type="java.net.InetAddress"/>
+ <param name="cmd" type="java.lang.String"/>
+ <param name="src" type="java.lang.String"/>
+ <param name="dst" type="java.lang.String"/>
+ <param name="stat" type="org.apache.hadoop.fs.FileStatus"/>
+ <param name="callerContext" type="org.apache.hadoop.ipc.CallerContext"/>
+ <param name="ugi" type="org.apache.hadoop.security.UserGroupInformation"/>
+ <param name="dtSecretManager" type="org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager"/>
+ <doc>
+ <![CDATA[Same as
+ {@link #logAuditEvent(boolean, String, InetAddress, String, String, String,
+ FileStatus)} with additional parameters related to logging delegation token
+ tracking IDs.
+
+ @param succeeded Whether authorization succeeded.
+ @param userName Name of the user executing the request.
+ @param addr Remote address of the request.
+ @param cmd The requested command.
+ @param src Path of affected source file.
+ @param dst Path of affected destination file (if any).
+ @param stat File information for operations that change the file's metadata
+ (permissions, owner, times, etc).
+ @param callerContext Context information of the caller
+ @param ugi UserGroupInformation of the current user, or null if not logging
+ token tracking information
+ @param dtSecretManager The token secret manager, or null if not logging
+ token tracking information]]>
+ </doc>
+ </method>
+ <method name="logAuditEvent"
+ abstract="true" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="succeeded" type="boolean"/>
+ <param name="userName" type="java.lang.String"/>
+ <param name="addr" type="java.net.InetAddress"/>
+ <param name="cmd" type="java.lang.String"/>
+ <param name="src" type="java.lang.String"/>
+ <param name="dst" type="java.lang.String"/>
+ <param name="stat" type="org.apache.hadoop.fs.FileStatus"/>
+ <param name="ugi" type="org.apache.hadoop.security.UserGroupInformation"/>
+ <param name="dtSecretManager" type="org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager"/>
+ <doc>
+ <![CDATA[Same as
+ {@link #logAuditEvent(boolean, String, InetAddress, String, String,
+ String, FileStatus, CallerContext, UserGroupInformation,
+ DelegationTokenSecretManager)} without {@link CallerContext} information.]]>
+ </doc>
+ </method>
+ <doc>
+ <![CDATA[Extension of {@link AuditLogger}.]]>
+ </doc>
+ </class>
+ <!-- end class org.apache.hadoop.hdfs.server.namenode.HdfsAuditLogger -->
+ <!-- start class org.apache.hadoop.hdfs.server.namenode.INodeAttributeProvider -->
+ <class name="INodeAttributeProvider" extends="java.lang.Object"
+ abstract="true"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <constructor name="INodeAttributeProvider"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ </constructor>
+ <method name="start"
+ abstract="true" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <doc>
+ <![CDATA[Initialize the provider. This method is called at NameNode startup
+ time.]]>
+ </doc>
+ </method>
+ <method name="stop"
+ abstract="true" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <doc>
+ <![CDATA[Shutdown the provider. This method is called at NameNode shutdown time.]]>
+ </doc>
+ </method>
+ <method name="getAttributes" return="org.apache.hadoop.hdfs.server.namenode.INodeAttributes"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="fullPath" type="java.lang.String"/>
+ <param name="inode" type="org.apache.hadoop.hdfs.server.namenode.INodeAttributes"/>
+ </method>
+ <method name="getAttributes" return="org.apache.hadoop.hdfs.server.namenode.INodeAttributes"
+ abstract="true" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="pathElements" type="java.lang.String[]"/>
+ <param name="inode" type="org.apache.hadoop.hdfs.server.namenode.INodeAttributes"/>
+ </method>
+ <method name="getAttributes" return="org.apache.hadoop.hdfs.server.namenode.INodeAttributes"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="components" type="byte[][]"/>
+ <param name="inode" type="org.apache.hadoop.hdfs.server.namenode.INodeAttributes"/>
+ </method>
+ <method name="getExternalAccessControlEnforcer" return="org.apache.hadoop.hdfs.server.namenode.INodeAttributeProvider.AccessControlEnforcer"
+ abstract="false" native="false" synchronized="false"
+ static="false" final="false" visibility="public"
+ deprecated="not deprecated">
+ <param name="defaultEnforcer" type="org.apache.hadoop.hdfs.server.namenode.INodeAttributeProvider.AccessControlEnforcer"/>
+ <doc>
+ <![CDATA[Can be over-ridden by implementations to provide a custom Access Control
+ Enforcer that can provide an alternate implementation of the
+ default permission checking logic.
+ @param defaultEnforcer The Default AccessControlEnforcer
+ @return The AccessControlEnforcer to use]]>
+ </doc>
+ </method>
+ </class>
+ <!-- end class org.apache.hadoop.hdfs.server.namenode.INodeAttributeProvider -->
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode.ha">
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode.metrics">
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode.snapshot">
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode.top">
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode.top.metrics">
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode.top.window">
+</package>
+<package name="org.apache.hadoop.hdfs.server.namenode.web.resources">
+</package>
+<package name="org.apache.hadoop.hdfs.server.protocol">
+</package>
+<package name="org.apache.hadoop.hdfs.tools">
+</package>
+<package name="org.apache.hadoop.hdfs.tools.offlineEditsViewer">
+</package>
+<package name="org.apache.hadoop.hdfs.tools.offlineImageViewer">
+</package>
+<package name="org.apache.hadoop.hdfs.tools.snapshot">
+</package>
+<package name="org.apache.hadoop.hdfs.util">
+</package>
+<package name="org.apache.hadoop.hdfs.web">
+</package>
+<package name="org.apache.hadoop.hdfs.web.resources">
+</package>
+
+</api>
http://git-wip-us.apache.org/repos/asf/hadoop/blob/7192749c/hadoop-project-dist/pom.xml
----------------------------------------------------------------------
diff --git a/hadoop-project-dist/pom.xml b/hadoop-project-dist/pom.xml
index cfaa698..5f83da3 100644
--- a/hadoop-project-dist/pom.xml
+++ b/hadoop-project-dist/pom.xml
@@ -145,7 +145,7 @@
<activeByDefault>false</activeByDefault>
</activation>
<properties>
- <jdiff.stable.api>3.0.2</jdiff.stable.api>
+ <jdiff.stable.api>2.9.1</jdiff.stable.api>
<jdiff.stability>-unstable</jdiff.stability>
<!-- Commented out for HADOOP-11776 -->
<!-- Uncomment param name="${jdiff.compatibility}" in javadoc doclet if compatibility is not empty -->
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