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https://issues.apache.org/jira/browse/HADOOP-4808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12654804#action_12654804
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Runping Qi commented on HADOOP-4808:
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Hadoop is designed to work with non-malicious code thus is not able to defend
malicious code.
There are just too many ways to damage the clusters by malicious code through
Hadoop.
The current architecture is just not designed for defending malicious code.
> 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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