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https://issues.apache.org/jira/browse/MAPREDUCE-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12769627#action_12769627
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Hadoop QA commented on MAPREDUCE-1098:
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+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12423098/patch-1098-4.txt
against trunk revision 829281.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 6 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 passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/208/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/208/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/208/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/208/console
This message is automatically generated.
> Incorrect synchronization in DistributedCache causes TaskTrackers to freeze
> up during localization of Cache for tasks.
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1098
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1098
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Reporter: Sreekanth Ramakrishnan
> Assignee: Amareshwari Sriramadasu
> Fix For: 0.21.0
>
> Attachments: MAPREDUCE-1098.patch, MAPREDUCE-1098.patch,
> MAPREDUCE-1098.patch, patch-1098-0.20.txt, patch-1098-1.txt,
> patch-1098-2.txt, patch-1098-3.txt, patch-1098-4.txt, patch-1098-ydist.txt,
> patch-1098.txt
>
>
> Currently {{org.apache.hadoop.filecache.DistributedCache.getLocalCache(URI,
> Configuration, Path, FileStatus, boolean, long, Path, boolean)}} allows only
> one {{TaskRunner}} thread in TT to localize {{DistributedCache}} across jobs.
> Current way of synchronization is across baseDir this has to be changed to
> lock on the same baseDir.
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