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https://issues.apache.org/jira/browse/SPARK-13965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15199192#comment-15199192
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Apache Spark commented on SPARK-13965:
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User 'devaraj-kavali' has created a pull request for this issue:
https://github.com/apache/spark/pull/11778
> Driver should kill the other running task attempts if any one task attempt
> succeeds for the same task
> -----------------------------------------------------------------------------------------------------
>
> Key: SPARK-13965
> URL: https://issues.apache.org/jira/browse/SPARK-13965
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.6.1
> Reporter: Devaraj K
>
> When we enable speculation, Driver would launch additional attempts for the
> same task if it founds that attempt is progressing slow compared to other
> tasks average progress and then there will be multiple task attempts in
> running state.
> At present, if any one attempt gets succeeded others would be keep running
> (even they could run till the job completion) and cannot be given these slots
> to other tasks in same stage or in next stages.
> We can kill these running task attempts when any other attempt gets succeeded
> and can be given the slots to run other tasks.
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