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https://issues.apache.org/jira/browse/HADOOP-1857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531589
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Hadoop QA commented on HADOOP-1857:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12366837/patch-1857.txt
against trunk revision r581028.
@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 failed core unit tests.
contrib tests -1. The patch failed contrib unit tests.
Test results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/857/testReport/
Findbugs warnings:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/857/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/857/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/857/console
This message is automatically generated.
> Ability to run a script when a task fails to capture stack traces
> -----------------------------------------------------------------
>
> Key: HADOOP-1857
> URL: https://issues.apache.org/jira/browse/HADOOP-1857
> Project: Hadoop
> Issue Type: Improvement
> Components: mapred
> Affects Versions: 0.14.0
> Reporter: Amareshwari Sri Ramadasu
> Assignee: Amareshwari Sri Ramadasu
> Fix For: 0.15.0
>
> Attachments: patch-1857.txt, patch1857.txt
>
>
> This basically is for providing a better user interface for debugging failed
> jobs. Today we see stack traces for failed tasks on the job ui if the job
> happened to be a Java MR job. For non-Java jobs like Streaming, Pipes, the
> diagnostic info on the job UI is not helpful enough to debug what might have
> gone wrong. They are usually framework traces and not app traces.
> We want to be able to provide a facility, via user-provided scripts, for doing
> post-processing on task logs, input, output, etc. There should be some default
> scripts like running core dumps under gdb for locating illegal instructions,
> the last few lines from stderr, etc. These outputs could be sent to the
> tasktracker and in turn to the jobtracker which would then display it on the
> job UI on demand.
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