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Posted to issues@spark.apache.org by "Prashant Sharma (JIRA)" <ji...@apache.org> on 2014/09/01 10:12:20 UTC

[jira] [Commented] (SPARK-3292) Shuffle Tasks run incessantly even though there's no inputs

    [ https://issues.apache.org/jira/browse/SPARK-3292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14117156#comment-14117156 ] 

Prashant Sharma commented on SPARK-3292:
----------------------------------------

This issue reminds me of a pull request that was trying to not do anything if there is nothing to save. I will try to recollect the PR number. But in the meantime, would be great if you could link it. 

> Shuffle Tasks run incessantly even though there's no inputs
> -----------------------------------------------------------
>
>                 Key: SPARK-3292
>                 URL: https://issues.apache.org/jira/browse/SPARK-3292
>             Project: Spark
>          Issue Type: Improvement
>          Components: Streaming
>    Affects Versions: 1.0.2
>            Reporter: guowei
>
> such as repartition groupby join and cogroup
> for example. 
> if i want the shuffle outputs save as hadoop file ,even though  there is no inputs , many emtpy file generate too.
> it's too expensive , 



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