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https://issues.apache.org/jira/browse/YARN-1307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852567#comment-13852567
 ] 

Hudson commented on YARN-1307:
------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #4916 (See 
[https://builds.apache.org/job/Hadoop-trunk-Commit/4916/])
YARN-1307. Redesign znode structure for Zookeeper based RM state-store for 
better organization and scalability. Contributed by Tsuyoshi OZAWA. (vinodkv: 
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1552209)
* /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/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/MemoryRMStateStore.java
* 
/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/NullRMStateStore.java
* 
/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/RMStateStore.java
* 
/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/ZKRMStateStore.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/TestRMRestart.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


> Rethink znode structure for RM HA
> ---------------------------------
>
>                 Key: YARN-1307
>                 URL: https://issues.apache.org/jira/browse/YARN-1307
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>             Fix For: 2.4.0
>
>         Attachments: YARN-1307.1.patch, YARN-1307.10.patch, 
> YARN-1307.11.patch, YARN-1307.12.patch, YARN-1307.13.patch, 
> YARN-1307.2.patch, YARN-1307.3.patch, YARN-1307.4-2.patch, 
> YARN-1307.4-3.patch, YARN-1307.4.patch, YARN-1307.5.patch, YARN-1307.6.patch, 
> YARN-1307.7.patch, YARN-1307.8.patch, YARN-1307.9.patch, YARN-1307.9.patch
>
>
> Rethink for znode structure for RM HA is proposed in some JIRAs(YARN-659, 
> YARN-1222). The motivation of this JIRA is quoted from Bikas' comment in 
> YARN-1222:
> {quote}
> We should move to creating a node hierarchy for apps such that all znodes for 
> an app are stored under an app znode instead of the app root znode. This will 
> help in removeApplication and also in scaling better on ZK. The earlier code 
> was written this way to ensure create/delete happens under a root znode for 
> fencing. But given that we have moved to multi-operations globally, this isnt 
> required anymore.
> {quote}



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