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https://issues.apache.org/jira/browse/HBASE-5970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13286354#comment-13286354
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Hadoop QA commented on HBASE-5970:
----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12530329/HBASE-5970v4.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 hadoop2.0. The patch compiles against the hadoop 2.0 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 appears to cause Findbugs (version 1.3.9) to fail.
+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.master.TestSplitLogManager
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/2071//testReport/
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/2071//console
This message is automatically generated.
> Improve the AssignmentManager#updateTimer and speed up handling opened event
> ----------------------------------------------------------------------------
>
> Key: HBASE-5970
> URL: https://issues.apache.org/jira/browse/HBASE-5970
> Project: HBase
> Issue Type: Improvement
> Components: master
> Reporter: chunhui shen
> Assignee: chunhui shen
> Priority: Critical
> Fix For: 0.96.0
>
> Attachments: 5970v3.patch, HBASE-5970.patch, HBASE-5970v2.patch,
> HBASE-5970v3.patch, HBASE-5970v4.patch, HBASE-5970v4.patch
>
>
> We found handing opened event very slow in the environment with lots of
> regions.
> The problem is the slow AssignmentManager#updateTimer.
> We do the test for bulk assigning 10w (i.e. 100k) regions, the whole process
> of bulk assigning took 1 hours.
> 2012-05-06 20:31:49,201 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning 100000
> region(s) round-robin across 5 server(s)
> 2012-05-06 21:26:32,103 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning done
> I think we could do the improvement for the AssignmentManager#updateTimer:
> Make a thread do this work.
> After the improvement, it took only 4.5mins
> 2012-05-07 11:03:36,581 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning 100000
> region(s) across 5 server(s), retainAssignment=true
> 2012-05-07 11:07:57,073 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning done
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