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From "Robert Chansler (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5643) Ability to blacklist tasktracker
Date Fri, 25 Sep 2009 22:38:16 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Robert Chansler updated HADOOP-5643:

    Release Note: 
New mradmin command -refreshNodes updates the job tracker's node lists.

  was:Added the functionality to refresh jobtrackers node list via command line (bin/hadoop
mradmin -refreshNodes). The command should be run as the jobtracker owner (jobtracker process
owner) or from a super group (mapred.permissions.supergroup). 

> Ability to blacklist tasktracker
> --------------------------------
>                 Key: HADOOP-5643
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5643
>             Project: Hadoop Common
>          Issue Type: New Feature
>    Affects Versions: 0.20.0
>            Reporter: Rajiv Chittajallu
>            Assignee: Amar Kamat
>             Fix For: 0.21.0
>         Attachments: Fixed 5643-0.20, Fixed+5643-0.20-final, Fixed+5643-0.20-part2, HADOOP-5643-v3.4.patch,
HADOOP-5643-v4.0.patch, HADOOP-5643-v4.6.patch, HADOOP-5643-v5.1.patch, HADOOP-5643-v5.12-testcase.patch,
HADOOP-5643-v5.12.patch, HADOOP-5643-v5.5.patch, HADOOP-5643-v5.9.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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