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https://issues.apache.org/jira/browse/MAPREDUCE-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758827#action_12758827
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Doug Cutting commented on MAPREDUCE-1016:
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Test failure is unrelated and failing for other tasks.

No new tests are required for this change.

> Make the format of the Job History be JSON instead of Avro binary
> -----------------------------------------------------------------
>
>                 Key: MAPREDUCE-1016
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1016
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Doug Cutting
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: MAPREDUCE-1016.patch
>
>
> I forgot that one of the features that would be nice is to off load the job 
> history display from the JobTracker. That will be a lot easier, if the job 
> history is stored in JSON. Therefore, I think we should change the storage 
> now to prevent incompatibilities later.

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