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Date: Sat, 5 May 2012 03:47:55 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-5914) Bulk assign regions in the process
 of ServerShutdownHandler
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    [ https://issues.apache.org/jira/browse/HBASE-5914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13268890#comment-13268890 ] 

Hadoop QA commented on HBASE-5914:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12525380/HBASE-5914v2.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +1 hadoop23.  The patch compiles against the hadoop 0.23.x profile.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit warnings.

     -1 core tests.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster
                  org.apache.hadoop.hbase.TestDrainingServer
                  org.apache.hadoop.hbase.master.TestAssignmentManager

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/1778//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/1778//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/1778//console

This message is automatically generated.
                
> Bulk assign regions in the process of ServerShutdownHandler
> -----------------------------------------------------------
>
>                 Key: HBASE-5914
>                 URL: https://issues.apache.org/jira/browse/HBASE-5914
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>             Fix For: 0.96.0
>
>         Attachments: HBASE-5914.patch, HBASE-5914v2.patch
>
>
> In the process of ServerShutdownHandler, we currently assign regions singly.
> In the large cluster, one regionserver always carried many regions, this action is  quite slow.
> What about using bulk assign regions like cluster start up.
> In current logic,  if we failed assigning many regions to one destination server, we will wait unitl timeout, 
> however in the process of ServerShutdownHandler, we should retry it to another server.

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