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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5141) Memory leak in MonitoredRPCHandlerImpl
Date Sat, 07 Jan 2012 19:27:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182070#comment-13182070
] 

Hadoop QA commented on HBASE-5141:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12509797/HBASE-5141-v2.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 javadoc.  The javadoc tool appears to have generated -151 warning messages.

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

    -1 findbugs.  The patch appears to introduce 79 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.mapreduce.TestImportTsv
                  org.apache.hadoop.hbase.mapred.TestTableMapReduce
                  org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/696//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/696//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/696//console

This message is automatically generated.
                
> Memory leak in MonitoredRPCHandlerImpl
> --------------------------------------
>
>                 Key: HBASE-5141
>                 URL: https://issues.apache.org/jira/browse/HBASE-5141
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.92.0
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>            Priority: Blocker
>             Fix For: 0.92.0, 0.94.0
>
>         Attachments: HBASE-5141-v2.patch, HBASE-5141.patch, Screen Shot 2012-01-06 at
3.03.09 PM.png
>
>
> I got a pretty reliable way of OOME'ing my region servers. Using a big payload (64MB
in my case), a default heap and default number of handlers, it's not too long that all the
MonitoredRPCHandlerImpl hold on a 64MB reference and once a compaction kicks in it kills everything.
> The issue is that even after the RPC call is done, the packet still lives in MonitoredRPCHandlerImpl.
> Will attach a screen shot of jprofiler's analysis in a moment.
> This is a blocker for 0.92.0, anyone using a high number of handlers and bigish values
will kill themselves.

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