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https://issues.apache.org/jira/browse/MAPREDUCE-5939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14045068#comment-14045068
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Jason Lowe commented on MAPREDUCE-5939:
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+1 lgtm. Committing this.
> StartTime showing up as the epoch time in JHS UI after upgrade
> --------------------------------------------------------------
>
> Key: MAPREDUCE-5939
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5939
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.5.0
> Reporter: Kihwal Lee
> Assignee: Chen He
> Attachments: MAPREDUCE-5939-v2.patch, MAPREDUCE-5939-v3.patch,
> MAPREDUCE-5939.patch
>
>
> After upgrading from 0.23.x to 2.5, the start time of old apps are showing up
> as the epoch time. It looks like 2.5 expects start time to be encoded at the
> end of the jhist file name (....xxxx-[timestamp].jhist). It should have been
> made backward compatible.
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