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https://issues.apache.org/jira/browse/MAPREDUCE-5754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13911112#comment-13911112
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Gera Shegalov commented on MAPREDUCE-5754:
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Thanks [~jlowe] for a review. I tested the change on an old history file as
this is a major concern for upgrades. I'll follow up on your other points as
well.
> Preserve Job diagnostics in history
> -----------------------------------
>
> Key: MAPREDUCE-5754
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5754
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobhistoryserver, mr-am
> Affects Versions: 2.2.0
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Attachments: MAPREDUCE-5754.v01.patch, MAPREDUCE-5754.v02.patch
>
>
> History does not store the runtime diagnostics information. JobHistoryParser
> tries to blame a task. We propose to preserve the original runtime
> diagnostics that covers all the cases including the job being killed. This is
> particularly important in the context of user-supplied diagnostic message as
> in MAPREDUCE-5648.
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