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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2456) Show the reducer taskid and map/reduce tasktrackers for "Failed fetch notification #_ for task attempt..." log messages
Date Mon, 09 May 2011 18:24:03 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030842#comment-13030842
] 

Hadoop QA commented on MAPREDUCE-2456:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12478616/MAPREDUCE-2456-trunk.patch
  against trunk revision 1100409.

    +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 new tests are needed for this patch.
                        Also please list what manual steps were performed to verify 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 (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    -1 core tests.  The patch failed these core unit tests:
                  org.apache.hadoop.mapred.TestDebugScript

    +1 contrib tests.  The patch passed contrib unit tests.

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/226//testReport/
Findbugs warnings: https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/226//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/226//console

This message is automatically generated.

> Show the reducer taskid and map/reduce tasktrackers for "Failed fetch notification #_
for task attempt..." log messages
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2456
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2456
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobtracker
>    Affects Versions: 0.20.204.0
>            Reporter: Jeffrey Naisbitt
>            Assignee: Jeffrey Naisbitt
>            Priority: Trivial
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2456-0.20s.patch, MAPREDUCE-2456-trunk.patch, MAPREDUCE-2456-trunk.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> This jira is to provide more useful log information for debugging the "Too many fetch-failures"
error.
> Looking at the JobTracker node, we see messages like this:
> "2010-12-14 00:00:06,911 INFO org.apache.hadoop.mapred.JobInProgress: Failed fetch notification
#8 for task
> attempt_201011300729_189729_m_007458_0".
> I would be useful to see which reducer is reporting the error here.
> So, I propose we add the following to these log messages:
>   1. reduce task ID
>   2. TaskTracker nodenames for both the mapper and the reducer

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