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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7309) Metrics refresh-task is not canceled when regions are closed, leaking HRegion objects
Date Sun, 09 Dec 2012 05:31:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13527343#comment-13527343
] 

Hadoop QA commented on HBASE-7309:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12560059/HBASE-7309_v2.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  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.

    {color:green}+1 hadoop2.0{color}.  The patch compiles against the hadoop 2.0 profile.

    {color:red}-1 javadoc{color}.  The javadoc tool appears to have generated 101 warning
messages.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 23 new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/3468//console

This message is automatically generated.
                
> Metrics refresh-task is not canceled when regions are closed, leaking HRegion objects
> -------------------------------------------------------------------------------------
>
>                 Key: HBASE-7309
>                 URL: https://issues.apache.org/jira/browse/HBASE-7309
>             Project: HBase
>          Issue Type: Bug
>          Components: metrics, regionserver
>    Affects Versions: 0.92.2, 0.94.3
>            Reporter: Adrian Muraru
>            Priority: Critical
>         Attachments: HBASE-7309_v1.patch, HBASE-7309_v2.patch
>
>
> While investigating HBASE-7205 by repeatedly enabling and disabling one table having
100 regions I noticed that closed HRegion objects are kept forever in memory. 
> The memory analyzer tool indicates a reference to HRegion object in metrics refresh-task
({{MetricsRegionWrapperImpl.HRegionMetricsWrapperRunnable}}) that prevents the HRegion object
to be collected.

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