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https://issues.apache.org/jira/browse/HADOOP-4808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12654920#action_12654920
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Runping Qi commented on HADOOP-4808:
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My point is that we don't want to complicate the implementation by attempts
that try to address one aspect of the problem but the fundamental problem of
the threads of malicious code remain the same.
> Blacklisting of TaskTrackers should take into account the user-ID
> -----------------------------------------------------------------
>
> Key: HADOOP-4808
> URL: https://issues.apache.org/jira/browse/HADOOP-4808
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Affects Versions: 0.20.0
> Reporter: Devaraj Das
>
> With HADOOP-4305, it is possible to blacklist TaskTrackers across jobs. It
> might make sense to also take into account the users whose tasks are being
> run on the TaskTrackers, and use it in the blacklisting strategy.
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