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https://issues.apache.org/jira/browse/SPARK-13965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj K resolved SPARK-13965.
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    Resolution: Duplicate

> TaskSetManager 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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