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Posted to mapreduce-issues@hadoop.apache.org by "Sharad Agarwal (JIRA)" <ji...@apache.org> on 2011/08/05 13:11:28 UTC

[jira] [Updated] (MAPREDUCE-2702) [MR-279] OutputCommitter changes for MR Application Master recovery

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sharad Agarwal updated MAPREDUCE-2702:
--------------------------------------

    Attachment: mr2702_v1.patch

OutputCommitter and FileOutputCommitter changes. work in progress. Continuing testing..

> [MR-279] OutputCommitter changes for MR Application Master recovery
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2702
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2702
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: mrv2
>            Reporter: Sharad Agarwal
>            Assignee: Sharad Agarwal
>         Attachments: mr2702_v1.patch
>
>
> In MR AM recovers from a crash, it only reruns the non completed tasks. The completed tasks (along with their output, if any) needs to be recovered from the previous life. This would require some changes in OutputCommitter.

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