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From "Patrick Wendell (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-3292) Shuffle Tasks run incessantly even though there's no inputs
Date Thu, 02 Oct 2014 00:03:12 GMT

     [ https://issues.apache.org/jira/browse/SPARK-3292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Wendell resolved SPARK-3292.
------------------------------------
    Resolution: Won't Fix

Seems like this is a necessary feature of the current design and can be partially worked around
by filtering in user space.

> 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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