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https://issues.apache.org/jira/browse/SPARK-22118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16216908#comment-16216908
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Maciej Bryński commented on SPARK-22118:
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I think this problem is resolved by: SPARK-20715
> Should prevent change epoch in success stage while there is some running stage
> ------------------------------------------------------------------------------
>
> Key: SPARK-22118
> URL: https://issues.apache.org/jira/browse/SPARK-22118
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.1.1, 2.2.0
> Reporter: SuYan
> Priority: Critical
>
> In 2.1, will change epoch if stage success, and will trigger mapoutTracker to
> clean cache broadcast....
> but when there have other running stage, and want to get mapstatus broadcast
> value...it will has the possibility that occurs failed to get broadcast?
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