[jira] [Resolved] (MAPREDUCE-443) snapshot a map-reduce to DFS ... and restore

["Allen Wittenauer (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-443?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer resolved MAPREDUCE-443.
----------------------------------------

    Resolution: Duplicate

Closing as a dupe of MAPREDUCE-457

> snapshot a map-reduce to DFS ... and restore
> --------------------------------------------
>
>                 Key: MAPREDUCE-443
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-443
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: eric baldeschwieler
>            Assignee: Owen O'Malley
>            Priority: Minor
>
> The idea is to be able to issue a command to the job tracker that
> will halt a map-reduce and archive it to a directory in such a way
> that it can later be restarted.
> We could also set a mode that would cause this to happen to a job
> when it fails.  This would allow one to debug and restart a failing
> job reasonably, which might be important, for long running jobs.  It
> has certainly been important in similar systems I've seen before.  One 
> could restart with a new jar or work bench a single failing map or reduce.



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