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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4305) repeatedly blacklisted tasktrackers should get declared dead
Date Fri, 14 Nov 2008 15:26:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12647631#action_12647631

Hadoop QA commented on HADOOP-4305:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 713893.

    +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 Eclipse classpath. The patch retains Eclipse classpath integrity.

    -1 core tests.  The patch failed core unit tests.

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

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3592/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3592/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3592/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3592/console

This message is automatically generated.

> repeatedly blacklisted tasktrackers should get declared dead
> ------------------------------------------------------------
>                 Key: HADOOP-4305
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4305
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Christian Kunz
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.20.0
>         Attachments: patch-4305-1.txt
> When running a batch of jobs it often happens that the same tasktrackers are blacklisted
again and again. This can slow job execution considerably, in particular, when tasks fail
because of timeout.
> It would make sense to no longer assign any tasks to such tasktrackers and to declare
them dead.

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