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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6713) Stopping META/ROOT RS may take 50mins when some region is splitting
Date Thu, 13 Sep 2012 17:30:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13455040#comment-13455040
] 

Hudson commented on HBASE-6713:
-------------------------------

Integrated in HBase-0.94-security #52 (See [https://builds.apache.org/job/HBase-0.94-security/52/])
    HBASE-6713 Stopping META/ROOT RS may take 50mins when some region is splitting (Chunhui)
(Revision 1382163)

     Result = SUCCESS
tedyu : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java

                
> Stopping META/ROOT RS may take 50mins when some region is splitting
> -------------------------------------------------------------------
>
>                 Key: HBASE-6713
>                 URL: https://issues.apache.org/jira/browse/HBASE-6713
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.94.1
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>             Fix For: 0.96.0, 0.94.2
>
>         Attachments: 6713.92-94, 6713v3.patch, HBASE-6713.patch, HBASE-6713v2.patch
>
>
> When we stop the RS carrying ROOT/META, if it is in the splitting for some region, the
whole stopping process may take 50 mins.
> The reason is :
> 1.ROOT/META region is closed when stopping the regionserver
> 2.The Split Transaction failed updating META and it will retry
> 3.The retry num is 100, and the total time is about 50 mins as default;
> This configuration is set by HConnectionManager#setServerSideHConnectionRetries
> I think 50 mins is too long to acceptable, my suggested solution is closing MetaTable
regions after the compact/split thread is closed

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