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https://issues.apache.org/jira/browse/SPARK-8029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Or updated SPARK-8029:
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Description:
When stages get retried, a task may have more than one attempt running at the
same time, on the same executor. Currently this causes problems for
ShuffleMapTasks, since all attempts try to write to the same output files.
This is resolved through
was:When stages get retried, a task may have more than one attempt running at
the same time, on the same executor. Currently this causes problems for
ShuffleMapTasks, since all attempts try to write to the same output files.
> ShuffleMapTasks must be robust to concurrent attempts on the same executor
> --------------------------------------------------------------------------
>
> Key: SPARK-8029
> URL: https://issues.apache.org/jira/browse/SPARK-8029
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.4.0
> Reporter: Imran Rashid
> Assignee: Davies Liu
> Priority: Critical
> Fix For: 1.5.3, 1.6.0
>
> Attachments:
> AlternativesforMakingShuffleMapTasksRobusttoMultipleAttempts.pdf
>
>
> When stages get retried, a task may have more than one attempt running at the
> same time, on the same executor. Currently this causes problems for
> ShuffleMapTasks, since all attempts try to write to the same output files.
> This is resolved through
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