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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5643) Ability to blacklist tasktracker
Date Tue, 05 May 2009 17:21:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12706114#action_12706114
] 

Amar Kamat commented on HADOOP-5643:
------------------------------------

Result of test patch.
{code}
[exec] +1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 15 new or modified tests.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     +1 Eclipse classpath. The patch retains Eclipse classpath integrity.
     [exec] 
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.
{code}
Running ant test

> Ability to blacklist tasktracker
> --------------------------------
>
>                 Key: HADOOP-5643
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5643
>             Project: Hadoop Core
>          Issue Type: New Feature
>    Affects Versions: 0.20.0
>            Reporter: Rajiv Chittajallu
>            Assignee: Amar Kamat
>         Attachments: HADOOP-5643-v3.4.patch, HADOOP-5643-v4.0.patch, HADOOP-5643-v4.6.patch,
HADOOP-5643-v5.1.patch
>
>
> Its not always possible to shutdown the tasktracker to stop scheduling tasks on the node.
(eg you can't login to the node but the TT is up). 
> This can be via 
>   * mapred.exclude and should be refreshed with out restarting the tasktracker
>   * hadoop job -fail-tracker <tracker id>

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