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https://issues.apache.org/jira/browse/MAPREDUCE-3473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158228#comment-13158228
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Ravi Gummadi commented on MAPREDUCE-3473:
-----------------------------------------

It would be good to distinguish between failures based on failure-types. AM can 
decide whether to reexecute/relaunch that task too many times or not based on 
the type of failure and number of times that task failed. No ?
                
> Task failures shouldn't result in Job failures 
> -----------------------------------------------
>
>                 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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