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https://issues.apache.org/jira/browse/HADOOP-5643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708638#action_12708638
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Hudson commented on HADOOP-5643:
--------------------------------
Integrated in Hadoop-trunk #834 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/834/])
. Removing the empty file
src/hdfs/org/apache/hadoop/hdfs/server/namenode/PermissionChecker.java.
> 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
> Fix For: 0.21.0
>
> Attachments: 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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