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From w...@apache.org
Subject [45/49] hadoop git commit: HADOOP-12798. Update changelog and release notes (2016-03-04) (aw)
Date Thu, 10 Mar 2016 03:41:07 GMT
http://git-wip-us.apache.org/repos/asf/hadoop/blob/a7164e90/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/CHANGES.2.7.1.md
----------------------------------------------------------------------
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/CHANGES.2.7.1.md
b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/CHANGES.2.7.1.md
index ed9100e..114b266 100644
--- a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/CHANGES.2.7.1.md
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/CHANGES.2.7.1.md
@@ -24,6 +24,13 @@
 
 | JIRA | Summary | Priority | Component | Reporter | Contributor |
 |:---- |:---- | :--- |:---- |:---- |:---- |
+| [HDFS-8226](https://issues.apache.org/jira/browse/HDFS-8226) | Non-HA rollback compatibility
broken |  Blocker | . | J.Andreina | J.Andreina |
+
+
+### IMPORTANT ISSUES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
 
 
 ### NEW FEATURES:
@@ -67,10 +74,10 @@
 | [HADOOP-11663](https://issues.apache.org/jira/browse/HADOOP-11663) | Remove description
about Java 6 from docs |  Minor | documentation | Masatake Iwasaki | Masatake Iwasaki |
 | [HADOOP-9658](https://issues.apache.org/jira/browse/HADOOP-9658) | SnappyCodec#checkNativeCodeLoaded
may unexpectedly fail when native code is not loaded |  Major | . | Zhijie Shen | Zhijie Shen
|
 | [HDFS-8681](https://issues.apache.org/jira/browse/HDFS-8681) | BlockScanner is incorrectly
disabled by default |  Blocker | datanode | Andrew Wang | Arpit Agarwal |
-| [HDFS-8633](https://issues.apache.org/jira/browse/HDFS-8633) | Fix setting of dfs.datanode.readahead.bytes
in hdfs-default.xml to match DFSConfigKeys |  Minor | HDFS | Ray Chiang | Ray Chiang |
-| [HDFS-8626](https://issues.apache.org/jira/browse/HDFS-8626) | Reserved RBW space is not
released if creation of RBW File fails |  Blocker | . | kanaka kumar avvaru | kanaka kumar
avvaru |
+| [HDFS-8633](https://issues.apache.org/jira/browse/HDFS-8633) | Fix setting of dfs.datanode.readahead.bytes
in hdfs-default.xml to match DFSConfigKeys |  Minor | datanode | Ray Chiang | Ray Chiang |
+| [HDFS-8626](https://issues.apache.org/jira/browse/HDFS-8626) | Reserved RBW space is not
released if creation of RBW File fails |  Blocker | . | Kanaka Kumar Avvaru | Kanaka Kumar
Avvaru |
 | [HDFS-8600](https://issues.apache.org/jira/browse/HDFS-8600) | TestWebHdfsFileSystemContract.testGetFileBlockLocations
fails in branch-2.7 |  Major | webhdfs | Arpit Agarwal | Arpit Agarwal |
-| [HDFS-8596](https://issues.apache.org/jira/browse/HDFS-8596) | TestDistributedFileSystem
et al tests are broken in branch-2 due to incorrect setting of "datanode" attribute |  Blocker
| HDFS | Yongjun Zhang | Yongjun Zhang |
+| [HDFS-8596](https://issues.apache.org/jira/browse/HDFS-8596) | TestDistributedFileSystem
et al tests are broken in branch-2 due to incorrect setting of "datanode" attribute |  Blocker
| datanode | Yongjun Zhang | Yongjun Zhang |
 | [HDFS-8595](https://issues.apache.org/jira/browse/HDFS-8595) | TestCommitBlockSynchronization
fails in branch-2.7 |  Major | test | Arpit Agarwal | Arpit Agarwal |
 | [HDFS-8583](https://issues.apache.org/jira/browse/HDFS-8583) | Document that NFS gateway
does not work with rpcbind on SLES 11 |  Major | documentation | Arpit Agarwal | Arpit Agarwal
|
 | [HDFS-8576](https://issues.apache.org/jira/browse/HDFS-8576) |  Lease recovery should return
true if the lease can be released and the file can be closed |  Major | namenode | J.Andreina
| J.Andreina |
@@ -89,7 +96,6 @@
 | [HDFS-8270](https://issues.apache.org/jira/browse/HDFS-8270) | create() always retried
with hardcoded timeout when file already exists with open lease |  Major | hdfs-client | Andrey
Stepachev | J.Andreina |
 | [HDFS-8269](https://issues.apache.org/jira/browse/HDFS-8269) | getBlockLocations() does
not resolve the .reserved path and generates incorrect edit logs when updating the atime |
 Blocker | . | Yesha Vora | Haohui Mai |
 | [HDFS-8245](https://issues.apache.org/jira/browse/HDFS-8245) | Standby namenode doesn't
process DELETED\_BLOCK if the add block request is in edit log. |  Major | . | Rushabh S Shah
| Rushabh S Shah |
-| [HDFS-8226](https://issues.apache.org/jira/browse/HDFS-8226) | Non-HA rollback compatibility
broken |  Blocker | . | J.Andreina | J.Andreina |
 | [HDFS-8213](https://issues.apache.org/jira/browse/HDFS-8213) | DFSClient should use hdfs.client.htrace
HTrace configuration prefix rather than hadoop.htrace |  Critical | . | Billie Rinaldi | Colin
Patrick McCabe |
 | [HDFS-8179](https://issues.apache.org/jira/browse/HDFS-8179) | DFSClient#getServerDefaults
returns null within 1 hour of system start |  Blocker | . | Xiaoyu Yao | Xiaoyu Yao |
 | [HDFS-8163](https://issues.apache.org/jira/browse/HDFS-8163) | Using monotonicNow for block
report scheduling causes test failures on recently restarted systems |  Blocker | datanode
| Arpit Agarwal | Arpit Agarwal |
@@ -98,7 +104,7 @@
 | [HDFS-8149](https://issues.apache.org/jira/browse/HDFS-8149) | The footer of the Web UI
"Hadoop, 2014" is old |  Major | . | Akira AJISAKA | Brahma Reddy Battula |
 | [HDFS-8147](https://issues.apache.org/jira/browse/HDFS-8147) | Mover should not schedule
two replicas to the same DN storage |  Major | balancer & mover | Surendra Singh Lilhore
| Surendra Singh Lilhore |
 | [HDFS-8127](https://issues.apache.org/jira/browse/HDFS-8127) | NameNode Failover during
HA upgrade can cause DataNode to finalize upgrade |  Blocker | ha | Jing Zhao | Jing Zhao
|
-| [HDFS-8091](https://issues.apache.org/jira/browse/HDFS-8091) | ACLStatus and XAttributes
not properly presented to INodeAttributesProvider before returning to client |  Major | HDFS
| Arun Suresh | Arun Suresh |
+| [HDFS-8091](https://issues.apache.org/jira/browse/HDFS-8091) | ACLStatus and XAttributes
not properly presented to INodeAttributesProvider before returning to client |  Major | namenode
| Arun Suresh | Arun Suresh |
 | [HDFS-8081](https://issues.apache.org/jira/browse/HDFS-8081) | Split getAdditionalBlock()
into two methods. |  Major | . | Konstantin Shvachko | Konstantin Shvachko |
 | [HDFS-8070](https://issues.apache.org/jira/browse/HDFS-8070) | Pre-HDFS-7915 DFSClient
cannot use short circuit on post-HDFS-7915 DataNode |  Blocker | caching | Gopal V | Colin
Patrick McCabe |
 | [HDFS-7980](https://issues.apache.org/jira/browse/HDFS-7980) | Incremental BlockReport
will dramatically slow down the startup of  a namenode |  Major | . | Hui Zheng | Walter Su
|
@@ -181,6 +187,7 @@
 | [YARN-3609](https://issues.apache.org/jira/browse/YARN-3609) | Move load labels from storage
from serviceInit to serviceStart to make it works with RM HA case. |  Major | resourcemanager
| Wangda Tan | Wangda Tan |
 | [YARN-3544](https://issues.apache.org/jira/browse/YARN-3544) | AM logs link missing in
the RM UI for a completed app |  Blocker | . | Hitesh Shah | Xuan Gong |
 | [YARN-3487](https://issues.apache.org/jira/browse/YARN-3487) | CapacityScheduler scheduler
lock obtained unnecessarily when calling getQueue |  Critical | capacityscheduler | Jason
Lowe | Jason Lowe |
+| [YARN-3301](https://issues.apache.org/jira/browse/YARN-3301) | Fix the format issue of
the new RM web UI and AHS web UI after YARN-3272 / YARN-3262 |  Major | resourcemanager |
Xuan Gong | Xuan Gong |
 | [YARN-3006](https://issues.apache.org/jira/browse/YARN-3006) | Improve the error message
when attempting manual failover with auto-failover enabled |  Minor | . | Akira AJISAKA |
Akira AJISAKA |
 | [YARN-2918](https://issues.apache.org/jira/browse/YARN-2918) | Don't fail RM if queue's
configured labels are not existed in cluster-node-labels |  Major | resourcemanager | Rohith
Sharma K S | Wangda Tan |
 | [YARN-2900](https://issues.apache.org/jira/browse/YARN-2900) | Application (Attempt and
Container) Not Found in AHS results in Internal Server Error (500) |  Major | timelineserver
| Jonathan Eagles | Mit Desai |

http://git-wip-us.apache.org/repos/asf/hadoop/blob/a7164e90/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/RELEASENOTES.2.7.1.md
----------------------------------------------------------------------
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/RELEASENOTES.2.7.1.md
b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/RELEASENOTES.2.7.1.md
index 2b62c13..1645e08 100644
--- a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/RELEASENOTES.2.7.1.md
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.1/RELEASENOTES.2.7.1.md
@@ -18,16 +18,17 @@
 -->
 # Apache Hadoop  2.7.1 Release Notes
 
-These release notes cover new developer and user-facing incompatibilities, features, and
major improvements.
+These release notes cover new developer and user-facing incompatibilities, important issues,
features, and major improvements.
 
 
 ---
 
 * [HDFS-8486](https://issues.apache.org/jira/browse/HDFS-8486) | *Blocker* | **DN startup
may cause severe data loss**
 
+<!-- markdown -->
 Public service notice:
-- Every restart of a 2.6.x or 2.7.0 DN incurs a risk of unwanted block deletion.
-- Apply this patch if you are running a pre-2.7.1 release.
+* Every restart of a 2.6.x or 2.7.0 DN incurs a risk of unwanted block deletion.
+* Apply this patch if you are running a pre-2.7.1 release.
 
 
 ---

http://git-wip-us.apache.org/repos/asf/hadoop/blob/a7164e90/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/CHANGES.2.7.2.md
----------------------------------------------------------------------
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/CHANGES.2.7.2.md
b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/CHANGES.2.7.2.md
new file mode 100644
index 0000000..2ece330
--- /dev/null
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/CHANGES.2.7.2.md
@@ -0,0 +1,224 @@
+
+<!---
+# 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 2.7.2 - 2016-01-25
+
+### INCOMPATIBLE CHANGES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HDFS-7645](https://issues.apache.org/jira/browse/HDFS-7645) | Rolling upgrade is restoring
blocks from trash multiple times |  Major | datanode | Nathan Roberts | Keisuke Ogiwara |
+
+
+### IMPORTANT ISSUES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-12825](https://issues.apache.org/jira/browse/HADOOP-12825) | Log slow name resolutions
|  Major | . | Sidharta Seethana | Sidharta Seethana |
+| [HADOOP-12413](https://issues.apache.org/jira/browse/HADOOP-12413) | AccessControlList
should avoid calling getGroupNames in isUserInList with empty groups. |  Major | security
| zhihai xu | zhihai xu |
+| [HADOOP-12280](https://issues.apache.org/jira/browse/HADOOP-12280) | Skip unit tests based
on maven profile rather than NativeCodeLoader.isNativeCodeLoaded |  Minor | test | Masatake
Iwasaki | Masatake Iwasaki |
+| [HADOOP-12232](https://issues.apache.org/jira/browse/HADOOP-12232) | Upgrade Tomcat dependency
to 6.0.44. |  Major | build | Chris Nauroth | Chris Nauroth |
+| [HADOOP-11812](https://issues.apache.org/jira/browse/HADOOP-11812) | Implement listLocatedStatus
for ViewFileSystem to speed up split calculation |  Blocker | fs | Gera Shegalov | Gera Shegalov
|
+| [HADOOP-7139](https://issues.apache.org/jira/browse/HADOOP-7139) | Allow appending to existing
SequenceFiles |  Major | io | Stephen Rose | Kanaka Kumar Avvaru |
+| [HADOOP-5323](https://issues.apache.org/jira/browse/HADOOP-5323) | Trash documentation
should describe its directory structure and configurations |  Minor | documentation | Suman
Sehgal | Weiwei Yang |
+| [HDFS-9434](https://issues.apache.org/jira/browse/HDFS-9434) | Recommission a datanode
with 500k blocks may pause NN for 30 seconds |  Major | namenode | Tsz Wo Nicholas Sze | Tsz
Wo Nicholas Sze |
+| [HDFS-9221](https://issues.apache.org/jira/browse/HDFS-9221) | HdfsServerConstants#ReplicaState#getState
should avoid calling values() since it creates a temporary array |  Major | performance |
Staffan Friberg | Staffan Friberg |
+| [HDFS-8722](https://issues.apache.org/jira/browse/HDFS-8722) | Optimize datanode writes
for small writes and flushes |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8659](https://issues.apache.org/jira/browse/HDFS-8659) | Block scanner INFO message
is spamming logs |  Major | datanode | Yongjun Zhang | Yongjun Zhang |
+| [HDFS-8384](https://issues.apache.org/jira/browse/HDFS-8384) | Allow NN to startup if there
are files having a lease but are not under construction |  Minor | namenode | Tsz Wo Nicholas
Sze | Jing Zhao |
+| [HDFS-7314](https://issues.apache.org/jira/browse/HDFS-7314) | When the DFSClient lease
cannot be renewed, abort open-for-write files rather than the entire DFSClient |  Major |
. | Ming Ma | Ming Ma |
+| [YARN-4158](https://issues.apache.org/jira/browse/YARN-4158) | Remove duplicate close for
LogWriter in AppLogAggregatorImpl#uploadLogsForContainers |  Minor | nodemanager | zhihai
xu | zhihai xu |
+| [YARN-3978](https://issues.apache.org/jira/browse/YARN-3978) | Configurably turn off the
saving of container info in Generic AHS |  Major | timelineserver, yarn | Eric Payne | Eric
Payne |
+| [YARN-3727](https://issues.apache.org/jira/browse/YARN-3727) | For better error recovery,
check if the directory exists before using it for localization. |  Major | nodemanager | zhihai
xu | zhihai xu |
+| [YARN-3248](https://issues.apache.org/jira/browse/YARN-3248) | Display count of nodes blacklisted
by apps in the web UI |  Major | capacityscheduler, resourcemanager | Varun Vasudev | Varun
Vasudev |
+| [YARN-3170](https://issues.apache.org/jira/browse/YARN-3170) | YARN architecture document
needs updating |  Major | documentation | Allen Wittenauer | Brahma Reddy Battula |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [HADOOP-12577](https://issues.apache.org/jira/browse/HADOOP-12577) | Bump up commons-collections
version to 3.2.2 to address a security flaw |  Blocker | build, security | Wei-Chiu Chuang
| Wei-Chiu Chuang |
+| [HADOOP-12526](https://issues.apache.org/jira/browse/HADOOP-12526) | [Branch-2] there are
duplicate dependency definitions in pom's |  Major | build | Sangjin Lee | Sangjin Lee |
+| [HADOOP-12465](https://issues.apache.org/jira/browse/HADOOP-12465) | Incorrect javadoc
in WritableUtils.java |  Minor | documentation | Martin Petricek | Jagadesh Kiran N |
+| [HADOOP-12464](https://issues.apache.org/jira/browse/HADOOP-12464) | Interrupted client
may try to fail-over and retry |  Major | ipc | Kihwal Lee | Kihwal Lee |
+| [HADOOP-12451](https://issues.apache.org/jira/browse/HADOOP-12451) | [Branch-2] Setting
HADOOP\_HOME explicitly should be allowed |  Blocker | scripts | Karthik Kambatla | Karthik
Kambatla |
+| [HADOOP-12415](https://issues.apache.org/jira/browse/HADOOP-12415) | hdfs and nfs builds
broken on -missing compile-time dependency on netty |  Major | nfs | Konstantin Boudnik |
Tom Zeng |
+| [HADOOP-12359](https://issues.apache.org/jira/browse/HADOOP-12359) | hadoop fs -getmerge
doc is wrong |  Major | documentation | Daniel Templeton | Jagadesh Kiran N |
+| [HADOOP-12304](https://issues.apache.org/jira/browse/HADOOP-12304) | Applications using
FileContext fail with the default file system configured to be wasb/s3/etc. |  Blocker | fs
| Chris Nauroth | Chris Nauroth |
+| [HADOOP-12230](https://issues.apache.org/jira/browse/HADOOP-12230) | hadoop-project declares
duplicate, conflicting curator dependencies |  Minor | build | Steve Loughran | Rakesh R |
+| [HADOOP-12213](https://issues.apache.org/jira/browse/HADOOP-12213) | Interrupted exception
can occur when Client#stop is called |  Minor | . | Oleg Zhurakousky | Kuhu Shukla |
+| [HADOOP-12191](https://issues.apache.org/jira/browse/HADOOP-12191) | Bzip2Factory is not
thread safe |  Major | io | Jason Lowe | Brahma Reddy Battula |
+| [HADOOP-12186](https://issues.apache.org/jira/browse/HADOOP-12186) | ActiveStandbyElector
shouldn't call monitorLockNodeAsync multiple times |  Major | ha | zhihai xu | zhihai xu |
+| [HADOOP-12006](https://issues.apache.org/jira/browse/HADOOP-12006) | Remove unimplemented
option for `hadoop fs -ls` from document in branch-2.7 |  Major | . | Akira AJISAKA | Akira
AJISAKA |
+| [HADOOP-11932](https://issues.apache.org/jira/browse/HADOOP-11932) |  MetricsSinkAdapter
hangs when being stopped |  Critical | . | Jian He | Brahma Reddy Battula |
+| [HADOOP-11491](https://issues.apache.org/jira/browse/HADOOP-11491) | HarFs incorrectly
declared as requiring an authority |  Critical | fs | Gera Shegalov | Brahma Reddy Battula
|
+| [HADOOP-10365](https://issues.apache.org/jira/browse/HADOOP-10365) | BufferedOutputStream
in FileUtil#unpackEntries() should be closed in finally block |  Minor | util | Ted Yu | Kiran
Kumar M R |
+| [HADOOP-9242](https://issues.apache.org/jira/browse/HADOOP-9242) | Duplicate surefire plugin
config in hadoop-common |  Major | test | Andrey Klochkov | Andrey Klochkov |
+| [HADOOP-8151](https://issues.apache.org/jira/browse/HADOOP-8151) | Error handling in snappy
decompressor throws invalid exceptions |  Major | io, native | Todd Lipcon | Matt Foley |
+| [HDFS-9574](https://issues.apache.org/jira/browse/HDFS-9574) | Reduce client failures during
datanode restart |  Major | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-9470](https://issues.apache.org/jira/browse/HDFS-9470) | Encryption zone on root
not loaded from fsimage after NN restart |  Critical | . | Xiao Chen | Xiao Chen |
+| [HDFS-9445](https://issues.apache.org/jira/browse/HDFS-9445) | Datanode may deadlock while
handling a bad volume |  Blocker | . | Kihwal Lee | Walter Su |
+| [HDFS-9431](https://issues.apache.org/jira/browse/HDFS-9431) | DistributedFileSystem#concat
fails if the target path is relative. |  Major | hdfs-client | Kazuho Fujii | Kazuho Fujii
|
+| [HDFS-9426](https://issues.apache.org/jira/browse/HDFS-9426) | Rollingupgrade finalization
is not backward compatible |  Blocker | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-9413](https://issues.apache.org/jira/browse/HDFS-9413) | getContentSummary() on standby
should throw StandbyException |  Critical | . | Brahma Reddy Battula | Brahma Reddy Battula
|
+| [HDFS-9317](https://issues.apache.org/jira/browse/HDFS-9317) | Document fsck -blockId and
-storagepolicy options in branch-2.7 |  Major | documentation | Akira AJISAKA | Akira AJISAKA
|
+| [HDFS-9305](https://issues.apache.org/jira/browse/HDFS-9305) | Delayed heartbeat processing
causes storm of subsequent heartbeats |  Major | datanode | Chris Nauroth | Arpit Agarwal
|
+| [HDFS-9294](https://issues.apache.org/jira/browse/HDFS-9294) | DFSClient  deadlock when
close file and failed to renew lease |  Blocker | hdfs-client | DENG FEI | Brahma Reddy Battula
|
+| [HDFS-9290](https://issues.apache.org/jira/browse/HDFS-9290) | DFSClient#callAppend() is
not backward compatible for slightly older NameNodes |  Blocker | . | Tony Wu | Tony Wu |
+| [HDFS-9289](https://issues.apache.org/jira/browse/HDFS-9289) | Make DataStreamer#block
thread safe and verify genStamp in commitBlock |  Critical | . | Chang Li | Chang Li |
+| [HDFS-9273](https://issues.apache.org/jira/browse/HDFS-9273) | ACLs on root directory may
be lost after NN restart |  Critical | namenode | Xiao Chen | Xiao Chen |
+| [HDFS-9220](https://issues.apache.org/jira/browse/HDFS-9220) | Reading small file (\<
512 bytes) that is open for append fails due to incorrect checksum |  Blocker | . | Bogdan
Raducanu | Jing Zhao |
+| [HDFS-9178](https://issues.apache.org/jira/browse/HDFS-9178) | Slow datanode I/O can cause
a wrong node to be marked bad |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-9106](https://issues.apache.org/jira/browse/HDFS-9106) | Transfer failure during
pipeline recovery causes permanent write failures |  Critical | . | Kihwal Lee | Kihwal Lee
|
+| [HDFS-9083](https://issues.apache.org/jira/browse/HDFS-9083) | Replication violates block
placement policy. |  Blocker | namenode | Rushabh S Shah | Rushabh S Shah |
+| [HDFS-9043](https://issues.apache.org/jira/browse/HDFS-9043) | Doc updation for commands
in HDFS Federation |  Minor | documentation | J.Andreina | J.Andreina |
+| [HDFS-9042](https://issues.apache.org/jira/browse/HDFS-9042) | Update document for the
Storage policy name |  Minor | documentation | J.Andreina | J.Andreina |
+| [HDFS-9033](https://issues.apache.org/jira/browse/HDFS-9033) | dfsadmin -metasave prints
"NaN" for cache used% |  Major | . | Archana T | Brahma Reddy Battula |
+| [HDFS-8995](https://issues.apache.org/jira/browse/HDFS-8995) | Flaw in registration bookeeping
can make DN die on reconnect |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8950](https://issues.apache.org/jira/browse/HDFS-8950) | NameNode refresh doesn't
remove DataNodes that are no longer in the allowed list |  Major | datanode, namenode | Daniel
Templeton | Daniel Templeton |
+| [HDFS-8891](https://issues.apache.org/jira/browse/HDFS-8891) | HDFS concat should keep
srcs order |  Blocker | . | Yong Zhang | Yong Zhang |
+| [HDFS-8879](https://issues.apache.org/jira/browse/HDFS-8879) | Quota by storage type usage
incorrectly initialized upon namenode restart |  Major | namenode | Kihwal Lee | Xiaoyu Yao
|
+| [HDFS-8867](https://issues.apache.org/jira/browse/HDFS-8867) | Enable optimized block reports
|  Major | . | Rushabh S Shah | Daryn Sharp |
+| [HDFS-8863](https://issues.apache.org/jira/browse/HDFS-8863) | The remaining space check
in BlockPlacementPolicyDefault is flawed |  Critical | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-8852](https://issues.apache.org/jira/browse/HDFS-8852) | HDFS architecture documentation
of version 2.x is outdated about append write support |  Major | documentation | Hong Dai
Thanh | Ajith S |
+| [HDFS-8850](https://issues.apache.org/jira/browse/HDFS-8850) | VolumeScanner thread exits
with exception if there is no block pool to be scanned but there are suspicious blocks | 
Major | datanode | Colin Patrick McCabe | Colin Patrick McCabe |
+| [HDFS-8846](https://issues.apache.org/jira/browse/HDFS-8846) | Add a unit test for INotify
functionality across a layout version upgrade |  Major | namenode | Zhe Zhang | Zhe Zhang
|
+| [HDFS-8806](https://issues.apache.org/jira/browse/HDFS-8806) | Inconsistent metrics: number
of missing blocks with replication factor 1 not properly cleared |  Major | . | Zhe Zhang
| Zhe Zhang |
+| [HDFS-8767](https://issues.apache.org/jira/browse/HDFS-8767) | RawLocalFileSystem.listStatus()
returns null for UNIX pipefile |  Critical | . | Haohui Mai | Kanaka Kumar Avvaru |
+| [HDFS-8676](https://issues.apache.org/jira/browse/HDFS-8676) | Delayed rolling upgrade
finalization can cause heartbeat expiration and write failures |  Critical | . | Kihwal Lee
| Walter Su |
+| [HDFS-8656](https://issues.apache.org/jira/browse/HDFS-8656) | Preserve compatibility of
ClientProtocol#rollingUpgrade after finalization |  Critical | rolling upgrades | Andrew Wang
| Andrew Wang |
+| [HDFS-8615](https://issues.apache.org/jira/browse/HDFS-8615) | Correct HTTP method in WebHDFS
document |  Major | documentation | Akira AJISAKA | Brahma Reddy Battula |
+| [HDFS-8431](https://issues.apache.org/jira/browse/HDFS-8431) | hdfs crypto class not found
in Windows |  Critical | scripts | Sumana Sathish | Anu Engineer |
+| [HDFS-8219](https://issues.apache.org/jira/browse/HDFS-8219) | setStoragePolicy with folder
behavior is different after cluster restart |  Major | . | Peter Shi | Surendra Singh Lilhore
|
+| [HDFS-8099](https://issues.apache.org/jira/browse/HDFS-8099) | Change "DFSInputStream has
been closed already" message to debug log level |  Minor | hdfs-client | Charles Lamb | Charles
Lamb |
+| [HDFS-8046](https://issues.apache.org/jira/browse/HDFS-8046) | Allow better control of
getContentSummary |  Major | . | Kihwal Lee | Kihwal Lee |
+| [HDFS-7725](https://issues.apache.org/jira/browse/HDFS-7725) | Incorrect "nodes in service"
metrics caused all writes to fail |  Major | . | Ming Ma | Ming Ma |
+| [HDFS-7609](https://issues.apache.org/jira/browse/HDFS-7609) | Avoid retry cache collision
when Standby NameNode loading edits |  Critical | namenode | Carrey Zhan | Ming Ma |
+| [HDFS-6945](https://issues.apache.org/jira/browse/HDFS-6945) | BlockManager should remove
a block from excessReplicateMap and decrement ExcessBlocks metric when the block is removed
|  Critical | namenode | Akira AJISAKA | Akira AJISAKA |
+| [MAPREDUCE-6549](https://issues.apache.org/jira/browse/MAPREDUCE-6549) | multibyte delimiters
with LineRecordReader cause duplicate records |  Major | mrv1, mrv2 | Dustin Cote | Wilfred
Spiegelenburg |
+| [MAPREDUCE-6540](https://issues.apache.org/jira/browse/MAPREDUCE-6540) | TestMRTimelineEventHandling
fails |  Major | test | Sangjin Lee | Sangjin Lee |
+| [MAPREDUCE-6528](https://issues.apache.org/jira/browse/MAPREDUCE-6528) | Memory leak for
HistoryFileManager.getJobSummary() |  Critical | jobhistoryserver | Junping Du | Junping Du
|
+| [MAPREDUCE-6518](https://issues.apache.org/jira/browse/MAPREDUCE-6518) | Set SO\_KEEPALIVE
on shuffle connections |  Major | mrv2, nodemanager | Nathan Roberts | Chang Li |
+| [MAPREDUCE-6497](https://issues.apache.org/jira/browse/MAPREDUCE-6497) | Fix wrong value
of JOB\_FINISHED event in JobHistoryEventHandler |  Major | . | Shinichi Yamashita | Shinichi
Yamashita |
+| [MAPREDUCE-6492](https://issues.apache.org/jira/browse/MAPREDUCE-6492) | AsyncDispatcher
exit with NPE on TaskAttemptImpl#sendJHStartEventForAssignedFailTask |  Critical | . | Bibin
A Chundatt | Bibin A Chundatt |
+| [MAPREDUCE-6481](https://issues.apache.org/jira/browse/MAPREDUCE-6481) | LineRecordReader
may give incomplete record and wrong position/key information for uncompressed input sometimes.
|  Critical | mrv2 | zhihai xu | zhihai xu |
+| [MAPREDUCE-6474](https://issues.apache.org/jira/browse/MAPREDUCE-6474) | ShuffleHandler
can possibly exhaust nodemanager file descriptors |  Major | mrv2, nodemanager | Nathan Roberts
| Kuhu Shukla |
+| [MAPREDUCE-6472](https://issues.apache.org/jira/browse/MAPREDUCE-6472) | MapReduce AM should
have java.io.tmpdir=./tmp to be consistent with tasks |  Major | mr-am | Jason Lowe | Naganarasimha
G R |
+| [MAPREDUCE-6454](https://issues.apache.org/jira/browse/MAPREDUCE-6454) | MapReduce doesn't
set the HADOOP\_CLASSPATH for jar lib in distributed cache. |  Critical | . | Junping Du |
Junping Du |
+| [MAPREDUCE-6451](https://issues.apache.org/jira/browse/MAPREDUCE-6451) | DistCp has incorrect
chunkFilePath for multiple jobs when strategy is dynamic |  Major | distcp | Kuhu Shukla |
Kuhu Shukla |
+| [MAPREDUCE-6442](https://issues.apache.org/jira/browse/MAPREDUCE-6442) | Stack trace is
missing when error occurs in client protocol provider's constructor |  Major | client | Chang
Li | Chang Li |
+| [MAPREDUCE-6439](https://issues.apache.org/jira/browse/MAPREDUCE-6439) | AM may fail instead
of retrying if RM shuts down during the allocate call |  Critical | . | Anubhav Dhoot | Anubhav
Dhoot |
+| [MAPREDUCE-6426](https://issues.apache.org/jira/browse/MAPREDUCE-6426) | TestShuffleHandler#testGetMapOutputInfo
is failing |  Major | test | Devaraj K | zhihai xu |
+| [MAPREDUCE-6425](https://issues.apache.org/jira/browse/MAPREDUCE-6425) | ShuffleHandler
passes wrong "base" parameter to getMapOutputInfo if mapId is not in the cache. |  Major |
mrv2, nodemanager | zhihai xu | zhihai xu |
+| [MAPREDUCE-6377](https://issues.apache.org/jira/browse/MAPREDUCE-6377) | JHS sorting on
state column not working in webUi |  Minor | jobhistoryserver | Bibin A Chundatt | zhihai
xu |
+| [MAPREDUCE-6273](https://issues.apache.org/jira/browse/MAPREDUCE-6273) | HistoryFileManager
should check whether summaryFile exists to avoid FileNotFoundException causing HistoryFileInfo
into MOVE\_FAILED state |  Minor | jobhistoryserver | zhihai xu | zhihai xu |
+| [MAPREDUCE-5982](https://issues.apache.org/jira/browse/MAPREDUCE-5982) | Task attempts
that fail from the ASSIGNED state can disappear |  Major | mr-am | Jason Lowe | Chang Li |
+| [MAPREDUCE-5948](https://issues.apache.org/jira/browse/MAPREDUCE-5948) | org.apache.hadoop.mapred.LineRecordReader
does not handle multibyte record delimiters well |  Critical | . | Kris Geusebroek | Akira
AJISAKA |
+| [MAPREDUCE-5883](https://issues.apache.org/jira/browse/MAPREDUCE-5883) | "Total megabyte-seconds"
in job counters is slightly misleading |  Minor | . | Nathan Roberts | Nathan Roberts |
+| [MAPREDUCE-5649](https://issues.apache.org/jira/browse/MAPREDUCE-5649) | Reduce cannot
use more than 2G memory  for the final merge |  Major | mrv2 | stanley shi | Gera Shegalov
|
+| [YARN-4434](https://issues.apache.org/jira/browse/YARN-4434) | NodeManager Disk Checker
parameter documentation is not correct |  Minor | documentation, nodemanager | Takashi Ohnishi
| Weiwei Yang |
+| [YARN-4424](https://issues.apache.org/jira/browse/YARN-4424) | Fix deadlock in RMAppImpl
|  Blocker | . | Yesha Vora | Jian He |
+| [YARN-4365](https://issues.apache.org/jira/browse/YARN-4365) | FileSystemNodeLabelStore
should check for root dir existence on startup |  Major | resourcemanager | Jason Lowe | Kuhu
Shukla |
+| [YARN-4354](https://issues.apache.org/jira/browse/YARN-4354) | Public resource localization
fails with NPE |  Blocker | nodemanager | Jason Lowe | Jason Lowe |
+| [YARN-4348](https://issues.apache.org/jira/browse/YARN-4348) | ZKRMStateStore.syncInternal
shouldn't wait for sync completion for avoiding blocking ZK's event thread |  Blocker | .
| Tsuyoshi Ozawa | Tsuyoshi Ozawa |
+| [YARN-4344](https://issues.apache.org/jira/browse/YARN-4344) | NMs reconnecting with changed
capabilities can lead to wrong cluster resource calculations |  Critical | resourcemanager
| Varun Vasudev | Varun Vasudev |
+| [YARN-4326](https://issues.apache.org/jira/browse/YARN-4326) | Fix TestDistributedShell
timeout as AHS in MiniYarnCluster no longer binds to default port 8188 |  Major | . | MENG
DING | MENG DING |
+| [YARN-4321](https://issues.apache.org/jira/browse/YARN-4321) | Incessant retries if NoAuthException
is thrown by Zookeeper in non HA mode |  Major | resourcemanager | Varun Saxena | Varun Saxena
|
+| [YARN-4320](https://issues.apache.org/jira/browse/YARN-4320) | TestJobHistoryEventHandler
fails as AHS in MiniYarnCluster no longer binds to default port 8188 |  Major | . | Varun
Saxena | Varun Saxena |
+| [YARN-4313](https://issues.apache.org/jira/browse/YARN-4313) | Race condition in MiniMRYarnCluster
when getting history server address |  Major | . | Jian He | Jian He |
+| [YARN-4312](https://issues.apache.org/jira/browse/YARN-4312) | TestSubmitApplicationWithRMHA
fails on branch-2.7 and branch-2.6 as some of the test cases time out |  Major | . | Varun
Saxena | Varun Saxena |
+| [YARN-4281](https://issues.apache.org/jira/browse/YARN-4281) | 2.7 RM app page is broken
|  Blocker | . | Chang Li | Chang Li |
+| [YARN-4241](https://issues.apache.org/jira/browse/YARN-4241) | Fix typo of property name
in yarn-default.xml |  Major | documentation | Anthony Rojas | Anthony Rojas |
+| [YARN-4209](https://issues.apache.org/jira/browse/YARN-4209) | RMStateStore FENCED state
doesn’t work due to updateFencedState called by stateMachine.doTransition |  Critical |
resourcemanager | zhihai xu | zhihai xu |
+| [YARN-4180](https://issues.apache.org/jira/browse/YARN-4180) | AMLauncher does not retry
on failures when talking to NM |  Critical | resourcemanager | Anubhav Dhoot | Anubhav Dhoot
|
+| [YARN-4127](https://issues.apache.org/jira/browse/YARN-4127) | RM fail with noAuth error
if switched from failover mode to non-failover mode |  Major | resourcemanager | Jian He |
Varun Saxena |
+| [YARN-4105](https://issues.apache.org/jira/browse/YARN-4105) | Capacity Scheduler headroom
for DRF is wrong |  Major | capacityscheduler | Chang Li | Chang Li |
+| [YARN-4103](https://issues.apache.org/jira/browse/YARN-4103) | RM WebServices missing scheme
for appattempts logLinks |  Major | . | Jonathan Eagles | Jonathan Eagles |
+| [YARN-4096](https://issues.apache.org/jira/browse/YARN-4096) | App local logs are leaked
if log aggregation fails to initialize for the app |  Major | log-aggregation, nodemanager
| Jason Lowe | Jason Lowe |
+| [YARN-4087](https://issues.apache.org/jira/browse/YARN-4087) | Followup fixes after YARN-2019
regarding RM behavior when state-store error occurs |  Major | . | Jian He | Jian He |
+| [YARN-4047](https://issues.apache.org/jira/browse/YARN-4047) | ClientRMService getApplications
has high scheduler lock contention |  Major | resourcemanager | Jason Lowe | Jason Lowe |
+| [YARN-4041](https://issues.apache.org/jira/browse/YARN-4041) | Slow delegation token renewal
can severely prolong RM recovery |  Major | resourcemanager | Jason Lowe | Sunil G |
+| [YARN-4009](https://issues.apache.org/jira/browse/YARN-4009) | CORS support for ResourceManager
REST API |  Major | . | Prakash Ramachandran | Varun Vasudev |
+| [YARN-4005](https://issues.apache.org/jira/browse/YARN-4005) | Completed container whose
app is finished is not removed from NMStateStore |  Major | . | Jun Gong | Jun Gong |
+| [YARN-4000](https://issues.apache.org/jira/browse/YARN-4000) | RM crashes with NPE if leaf
queue becomes parent queue during restart |  Major | capacityscheduler, resourcemanager |
Jason Lowe | Varun Saxena |
+| [YARN-3999](https://issues.apache.org/jira/browse/YARN-3999) | RM hangs on draining events
|  Major | . | Jian He | Jian He |
+| [YARN-3990](https://issues.apache.org/jira/browse/YARN-3990) | AsyncDispatcher may overloaded
with RMAppNodeUpdateEvent when Node is connected/disconnected |  Critical | resourcemanager
| Rohith Sharma K S | Bibin A Chundatt |
+| [YARN-3975](https://issues.apache.org/jira/browse/YARN-3975) | WebAppProxyServlet should
not redirect to RM page if AHS is enabled |  Major | . | Mit Desai | Mit Desai |
+| [YARN-3967](https://issues.apache.org/jira/browse/YARN-3967) | Fetch the application report
from the AHS if the RM does not know about it |  Major | . | Mit Desai | Mit Desai |
+| [YARN-3925](https://issues.apache.org/jira/browse/YARN-3925) | ContainerLogsUtils#getContainerLogFile
fails to read container log files from full disks. |  Critical | nodemanager | zhihai xu |
zhihai xu |
+| [YARN-3905](https://issues.apache.org/jira/browse/YARN-3905) | Application History Server
UI NPEs when accessing apps run after RM restart |  Major | timelineserver | Eric Payne |
Eric Payne |
+| [YARN-3896](https://issues.apache.org/jira/browse/YARN-3896) | RMNode transitioned from
RUNNING to REBOOTED because its response id had not been reset synchronously |  Major | resourcemanager
| Jun Gong | Jun Gong |
+| [YARN-3878](https://issues.apache.org/jira/browse/YARN-3878) | AsyncDispatcher can hang
while stopping if it is configured for draining events on stop |  Critical | . | Varun Saxena
| Varun Saxena |
+| [YARN-3857](https://issues.apache.org/jira/browse/YARN-3857) | Memory leak in ResourceManager
with SIMPLE mode |  Critical | resourcemanager | mujunchao | mujunchao |
+| [YARN-3802](https://issues.apache.org/jira/browse/YARN-3802) | Two RMNodes for the same
NodeId are used in RM sometimes after NM is reconnected. |  Major | resourcemanager | zhihai
xu | zhihai xu |
+| [YARN-3798](https://issues.apache.org/jira/browse/YARN-3798) | ZKRMStateStore shouldn't
create new session without occurrance of SESSIONEXPIED |  Blocker | resourcemanager | Bibin
A Chundatt | Varun Saxena |
+| [YARN-3793](https://issues.apache.org/jira/browse/YARN-3793) | Several NPEs when deleting
local files on NM recovery |  Major | nodemanager | Karthik Kambatla | Varun Saxena |
+| [YARN-3780](https://issues.apache.org/jira/browse/YARN-3780) | Should use equals when compare
Resource in RMNodeImpl#ReconnectNodeTransition |  Minor | resourcemanager | zhihai xu | zhihai
xu |
+| [YARN-3697](https://issues.apache.org/jira/browse/YARN-3697) | FairScheduler: ContinuousSchedulingThread
can fail to shutdown |  Critical | fairscheduler | zhihai xu | zhihai xu |
+| [YARN-3690](https://issues.apache.org/jira/browse/YARN-3690) | [JDK8] 'mvn site' fails
|  Major | api, site | Akira AJISAKA | Brahma Reddy Battula |
+| [YARN-3624](https://issues.apache.org/jira/browse/YARN-3624) | ApplicationHistoryServer
reverses the order of the filters it gets |  Major | timelineserver | Mit Desai | Mit Desai
|
+| [YARN-3619](https://issues.apache.org/jira/browse/YARN-3619) | ContainerMetrics unregisters
during getMetrics and leads to ConcurrentModificationException |  Major | nodemanager | Jason
Lowe | zhihai xu |
+| [YARN-3535](https://issues.apache.org/jira/browse/YARN-3535) | Scheduler must re-request
container resources when RMContainer transitions from ALLOCATED to KILLED |  Critical | capacityscheduler,
fairscheduler, resourcemanager | Peng Zhang | Peng Zhang |
+| [YARN-3508](https://issues.apache.org/jira/browse/YARN-3508) | Prevent processing preemption
events on the main RM dispatcher |  Major | resourcemanager, scheduler | Jason Lowe | Varun
Saxena |
+| [YARN-2890](https://issues.apache.org/jira/browse/YARN-2890) | MiniYarnCluster should turn
on timeline service if configured to do so |  Major | . | Mit Desai | Mit Desai |
+| [YARN-2859](https://issues.apache.org/jira/browse/YARN-2859) | ApplicationHistoryServer
binds to default port 8188 in MiniYARNCluster |  Critical | timelineserver | Hitesh Shah |
Vinod Kumar Vavilapalli |
+| [YARN-2019](https://issues.apache.org/jira/browse/YARN-2019) | Retrospect on decision of
making RM crashed if any exception throw in ZKRMStateStore |  Critical | . | Junping Du |
Jian He |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [YARN-3580](https://issues.apache.org/jira/browse/YARN-3580) | [JDK 8] TestClientRMService.testGetLabelsToNodes
fails |  Major | test | Robert Kanter | Robert Kanter |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |
+| [YARN-4101](https://issues.apache.org/jira/browse/YARN-4101) | RM should print alert messages
if Zookeeper and Resourcemanager gets connection issue |  Critical | yarn | Yesha Vora | Xuan
Gong |
+| [YARN-4092](https://issues.apache.org/jira/browse/YARN-4092) | RM HA UI redirection needs
to be fixed when both RMs are in standby mode |  Major | resourcemanager | Xuan Gong | Xuan
Gong |
+| [YARN-3969](https://issues.apache.org/jira/browse/YARN-3969) | Allow jobs to be submitted
to reservation that is active but does not have any allocations |  Major | capacityscheduler,
fairscheduler, resourcemanager | Subru Krishnan | Subru Krishnan |
+| [YARN-3893](https://issues.apache.org/jira/browse/YARN-3893) | Both RM in active state
when Admin#transitionToActive failure from refeshAll() |  Critical | resourcemanager | Bibin
A Chundatt | Bibin A Chundatt |
+| [YARN-3740](https://issues.apache.org/jira/browse/YARN-3740) | Fixed the typo with the
configuration name: APPLICATION\_HISTORY\_PREFIX\_MAX\_APPS |  Major | resourcemanager, webapp,
yarn | Xuan Gong | Xuan Gong |
+| [YARN-3700](https://issues.apache.org/jira/browse/YARN-3700) | ATS Web Performance issue
at load time when large number of jobs |  Major | resourcemanager, webapp, yarn | Xuan Gong
| Xuan Gong |
+| [YARN-3136](https://issues.apache.org/jira/browse/YARN-3136) | getTransferredContainers
can be a bottleneck during AM registration |  Major | scheduler | Jason Lowe | Sunil G |
+| [YARN-2902](https://issues.apache.org/jira/browse/YARN-2902) | Killing a container that
is localizing can orphan resources in the DOWNLOADING state |  Major | nodemanager | Jason
Lowe | Varun Saxena |
+| [YARN-2801](https://issues.apache.org/jira/browse/YARN-2801) | Add documentation for node
labels feature |  Major | documentation | Gururaj Shetty | Wangda Tan |
+| [YARN-2513](https://issues.apache.org/jira/browse/YARN-2513) | Host framework UIs in YARN
for use with the ATS |  Major | timelineserver | Jonathan Eagles | Jonathan Eagles |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component | Reporter | Contributor |
+|:---- |:---- | :--- |:---- |:---- |:---- |

http://git-wip-us.apache.org/repos/asf/hadoop/blob/a7164e90/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/RELEASENOTES.2.7.2.md
----------------------------------------------------------------------
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/RELEASENOTES.2.7.2.md
b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/RELEASENOTES.2.7.2.md
new file mode 100644
index 0000000..57cf8e7
--- /dev/null
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.7.2/RELEASENOTES.2.7.2.md
@@ -0,0 +1,35 @@
+
+<!---
+# 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  2.7.2 Release Notes
+
+These release notes cover new developer and user-facing incompatibilities, important issues,
features, and major improvements.
+
+
+---
+
+* [HADOOP-7139](https://issues.apache.org/jira/browse/HADOOP-7139) | *Major* | **Allow appending
to existing SequenceFiles**
+
+Existing sequence files can be appended.
+
+
+---
+
+* [HDFS-7645](https://issues.apache.org/jira/browse/HDFS-7645) | *Major* | **Rolling upgrade
is restoring blocks from trash multiple times**
+
+**WARNING: No release note provided for this incompatible change.**


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