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From "Tsuyoshi OZAWA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1514) Utility to benchmark ZKRMStateStore#loadState for ResourceManager-HA
Date Fri, 16 May 2014 11:24:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-1514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13998660#comment-13998660
] 

Tsuyoshi OZAWA commented on YARN-1514:
--------------------------------------

Rough design:
1. Launch ZKRMStateStore and initialize ZooKeeper.
2. Creating znodes based on given option.
3. Run loadState() and show how much time it takes.

> Utility to benchmark ZKRMStateStore#loadState for ResourceManager-HA
> --------------------------------------------------------------------
>
>                 Key: YARN-1514
>                 URL: https://issues.apache.org/jira/browse/YARN-1514
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>             Fix For: 2.5.0
>
>
> ZKRMStateStore is very sensitive to ZNode-related operations as discussed in YARN-1307,
YARN-1378 and so on. Especially, ZKRMStateStore#loadState is called when RM-HA cluster does
failover. Therefore, its execution time impacts failover time of RM-HA.
> We need utility to benchmark time execution time of ZKRMStateStore#loadStore as development
tool.



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