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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1302) TrackerDistributedCacheManager can delete file asynchronously
Date Tue, 29 Dec 2009 23:46:29 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12795198#action_12795198
] 

Hadoop QA commented on MAPREDUCE-1302:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12429084/MAPREDUCE-1302.2.patch
  against trunk revision 894165.

    +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 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.

Test results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/350/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/350/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/350/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/350/console

This message is automatically generated.

> TrackerDistributedCacheManager can delete file asynchronously
> -------------------------------------------------------------
>
>                 Key: MAPREDUCE-1302
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1302
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: tasktracker
>    Affects Versions: 0.20.2, 0.21.0, 0.22.0
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         Attachments: MAPREDUCE-1302.0.patch, MAPREDUCE-1302.1.patch, MAPREDUCE-1302.2.patch
>
>
> With the help of AsyncDiskService from MAPREDUCE-1213, we should be able to delete files
from distributed cache asynchronously.
> That will help make task initialization faster, because task initialization calls the
code that localizes files into the cache and may delete some other files.
> The deletion can slow down the task initialization speed.

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