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https://issues.apache.org/jira/browse/HADOOP-1983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12532305
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Hadoop QA commented on HADOOP-1983:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12367040/pipe-flush.patch
against trunk revision r581745.
@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 compiler 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 failed contrib unit tests.
Test results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/879/testReport/
Findbugs warnings:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/879/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/879/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/879/console
This message is automatically generated.
> jobs using pipes interface with tasks not using java output format have a
> good chance of not updating progress and timing out
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-1983
> URL: https://issues.apache.org/jira/browse/HADOOP-1983
> Project: Hadoop
> Issue Type: Bug
> Components: pipes
> Affects Versions: 0.15.0
> Reporter: Christian Kunz
> Assignee: Owen O'Malley
> Fix For: 0.15.0
>
> Attachments: pipe-flush.patch
>
>
> When using C++-pipes interface, mappers/reducers not emitting any key-values
> pairs, but running longer than 'mapred.task.timeout' might timeout even when
> they send periodical status updates upstream.
> The cause of the problem is that all upstream messages are buffered. Progress
> and status updates should be flushed immediately.
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