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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2495) The distributed cache cleanup thread has no monitoring to check to see if it has died for some reason
Date Wed, 18 May 2011 17:32:47 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035507#comment-13035507
] 

Hadoop QA commented on MAPREDUCE-2495:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12479597/MAPREDUCE-2495-v2.patch
  against trunk revision 1104687.

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

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +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 passed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/262//testReport/
Findbugs warnings: https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/262//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/262//console

This message is automatically generated.

> The distributed cache cleanup thread has no monitoring to check to see if it has died
for some reason
> -----------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2495
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2495
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: distributed-cache
>    Affects Versions: 0.21.0
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Minor
>         Attachments: MAPREDUCE-2495-20.20X-V1.patch, MAPREDUCE-2495-20.20X-V2.patch,
MAPREDUCE-2495-v1.patch, MAPREDUCE-2495-v2.patch
>
>
> The cleanup thread in the distributed cache handles IOExceptions and the like correctly,
but just to be a bit more defensive it would be good to monitor the thread, and check that
it is still alive regularly, so that the distributed cache does not fill up the entire disk
on the node. 

--
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