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https://issues.apache.org/jira/browse/SPARK-8029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568552#comment-14568552
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Imran Rashid edited comment on SPARK-8029 at 6/2/15 5:27 AM:
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This is a subset of the issues originally reported in SPARK-7308, to have an
issue with a smaller scope, but hopefully still large enough to consider the
design.
SPARK-7829 is the "ad-hoc" proposal of the fix for this issue.
was (Author: irashid):
This is a subset of the issues originally reported in
https://issues.apache.org/jira/browse/SPARK-7308, to have an issue with a
smaller scope, but hopefully still large enough to consider the design.
https://issues.apache.org/jira/browse/SPARK-7829 is the "ad-hoc" proposal of
the fix for this issue.
> 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
> 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.
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