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https://issues.apache.org/jira/browse/SPARK-1529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267424#comment-14267424
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Patrick Wendell commented on SPARK-1529:
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BTW - I think if MapR wants to have a customized shuffle, the direction 
proposed in this patch is probably not the best way to do it. It would make 
more sense to implement a DFS-based shuffle using the new pluggable shuffle 
API. I.e. a shuffle that communicates through the filesystem rather than doing 
transfers through Spark.

> Support setting spark.local.dirs to a hadoop FileSystem 
> --------------------------------------------------------
>
>                 Key: SPARK-1529
>                 URL: https://issues.apache.org/jira/browse/SPARK-1529
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>            Reporter: Patrick Wendell
>            Assignee: Cheng Lian
>
> In some environments, like with MapR, local volumes are accessed through the 
> Hadoop filesystem interface. We should allow setting spark.local.dir to a 
> Hadoop filesystem location. 



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