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https://issues.apache.org/jira/browse/MAPREDUCE-2606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13061616#comment-13061616
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Eli Collins commented on MAPREDUCE-2606:
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Yea, looks like IsolationRunner has bit rot for a long time. Given no one uses
it and we have MAPREDUCE-2637 for an MR2 replacement I think we can remove it.
+1
> IsolationRunner broken
> ----------------------
>
> Key: MAPREDUCE-2606
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2606
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Attachments: MAPREDUCE-2606.patch
>
>
> IsolationRunner it seems it has been broken for a while, it gives a NPE when
> trying to use it.
> In addition, it supports only Map tasks; to use it the user must ssh to the
> node where the task failed; and unless the job has been configured to keep
> local files, the job must be run again.
> Because of this, IMO, the current implementation of IsolationRunner is not of
> much use.
> Any objection to remove it from trunk and if people have the need for such
> functionality to open another JIRA to build this functionality supported by
> the JobTracker (ie via the UI console)?
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