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https://issues.apache.org/jira/browse/HADOOP-2639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12563408#action_12563408
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Hadoop QA commented on HADOOP-2639:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12374231/HADOOP-2639_1_20080128.patch
against trunk revision 615723.
@author +1. The patch does not contain any @author tags.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new javac compiler
warnings.
release audit +1. The applied patch does not generate any new release
audit warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
contrib tests +1. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1696/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1696/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1696/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1696/console
This message is automatically generated.
> Reducers stuck in shuffle
> -------------------------
>
> Key: HADOOP-2639
> URL: https://issues.apache.org/jira/browse/HADOOP-2639
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Amareshwari Sri Ramadasu
> Assignee: Arun C Murthy
> Priority: Blocker
> Fix For: 0.16.0
>
> Attachments: HADOOP-2639.patch, HADOOP-2639_1_20080128.patch
>
>
> I started sort benchmark on 500 nodes. It has 40000 maps and 900 reducers.
> There are 11 reducers stuck in shuffle with 33% progress. I could see a node
> down which ran 80 maps on it. And all these reducers are trying to fetch map
> output from that node.
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