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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3837) hadop streaming does not use progress reporting to detect hung tasks
Date Mon, 28 Jul 2008 23:34:31 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12617615#action_12617615

Hadoop QA commented on HADOOP-3837:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 679930.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +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

    +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/Hadoop-Patch/2962/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2962/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2962/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2962/console

This message is automatically generated.

> hadop streaming does not use progress reporting to detect hung tasks
> --------------------------------------------------------------------
>                 Key: HADOOP-3837
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3837
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/streaming
>    Affects Versions: 0.17.0
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>             Fix For: 0.18.0, 0.19.0
>         Attachments: streamTimeout.patch, streamTimeout.patch
> Hadoop streaming (StreamJob.java) sets mapred.task.timeout to 0. This effectively means
that if tasks hang (either due to bad user code or machine related issue), these tasks never
encounters a timeout. This causes the entire job to hang.
> I propose that hadoop streaming not set the timeout to 0. By default, the settings in
hadoop-default.xml should be effective for streaming jobs.

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