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https://issues.apache.org/jira/browse/YARN-1185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800126#comment-13800126
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Hudson commented on YARN-1185:
------------------------------
FAILURE: Integrated in Hadoop-Hdfs-trunk #1558 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1558/])
YARN-1185. Fixed FileSystemRMStateStore to not leave partial files that prevent
subsequent ResourceManager recovery. Contributed by Omkar Vinit Joshi.
(vinodkv:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1533803)
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStoreTestBase.java
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestFSRMStateStore.java
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestRMStateStore.java
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStoreZKClientConnections.java
> FileSystemRMStateStore can leave partial files that prevent subsequent
> recovery
> -------------------------------------------------------------------------------
>
> Key: YARN-1185
> URL: https://issues.apache.org/jira/browse/YARN-1185
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Affects Versions: 2.1.0-beta
> Reporter: Jason Lowe
> Assignee: Omkar Vinit Joshi
> Fix For: 2.3.0
>
> Attachments: YARN-1185.1.patch, YARN-1185.2.patch, YARN-1185.3.patch
>
>
> FileSystemRMStateStore writes directly to the destination file when storing
> state. However if the RM were to crash in the middle of the write, the
> recovery method could encounter a partially-written file and either outright
> crash during recovery or silently load incomplete state.
> To avoid this, the data should be written to a temporary file and renamed to
> the destination file afterwards.
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