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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1983) jobs using pipes interface with tasks not using java output format have a good chance of not updating progress and timing out
Date Thu, 04 Oct 2007 00:44:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12532305
] 

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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