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https://issues.apache.org/jira/browse/MAPREDUCE-3473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13174685#comment-13174685
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Eli Collins commented on MAPREDUCE-3473:
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bq. a single machine failure doesn't result in job to fail; thats the whole
point of hadoop. smile.
It can, that's the point of this bug!
> A single task tracker failure shouldn't result in Job failure
> --------------------------------------------------------------
>
> Key: MAPREDUCE-3473
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3473
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: tasktracker
> Affects Versions: 0.20.205.0, 0.23.0
> Reporter: Eli Collins
>
> Currently some task failures may result in job failures. Eg a local TT disk
> failure seen in TaskLauncher#run, TaskRunner#run, MapTask#run is visible to
> and can hang the JobClient, causing the job to fail. Job execution should
> always be able to survive a task failure if there are sufficient resources.
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