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https://issues.apache.org/jira/browse/YARN-1378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13838606#comment-13838606
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Jian He commented on YARN-1378:
-------------------------------

Tested on single node cluster with 10000 finished apps (each app includes one 
attempt),
 HDFS store takes about 16.5 secs to recover all applications and ZooKeeper 
takes about 8.5 secs.


> Implement a RMStateStore cleaner for deleting application/attempt info
> ----------------------------------------------------------------------
>
>                 Key: YARN-1378
>                 URL: https://issues.apache.org/jira/browse/YARN-1378
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-1378.1.patch, YARN-1378.2.patch, YARN-1378.3.patch, 
> YARN-1378.4.patch
>
>
> Now that we are storing the final state of application/attempt instead of 
> removing application/attempt info on application/attempt 
> completion(YARN-891), we need a separate RMStateStore cleaner for cleaning 
> the application/attempt state.



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