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From "Lars Hofhansl (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4780) Lower mini cluster shutdown time in HRegionServer#waitOnAllRegionsToClose and ServerManager#letRegionServersShutdown
Date Mon, 14 Nov 2011 20:00:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13149857#comment-13149857
] 

Lars Hofhansl commented on HBASE-4780:
--------------------------------------

v2 looks good to me
                
> Lower mini cluster shutdown time in HRegionServer#waitOnAllRegionsToClose and ServerManager#letRegionServersShutdown
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4780
>                 URL: https://issues.apache.org/jira/browse/HBASE-4780
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver, test
>    Affects Versions: 0.94.0
>         Environment: all
>            Reporter: nkeywal
>            Assignee: nkeywal
>            Priority: Minor
>         Attachments: 4780_trunk.patch, 4780_trunk.patch, 4780_trunk.v2.patch
>
>
> HRegionServer#waitOnAllRegionsToClose sleep 1s 
>  Lower waiting time
>  benefits: around 0.8s at shutdown
> ServerManager.letRegionServersShutdown() waits 1 second => responsible for 0.5 seconds
in a HBase cluster stops
>   Can be replaced by a notification
>   Benefits: around 0.5s at shutdown

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