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https://issues.apache.org/jira/browse/SPARK-1529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14263603#comment-14263603
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Kannan Rajah commented on SPARK-1529:
-------------------------------------

It cannot preclude the use of java.io completely. If there are java.io. APIs 
that are needed for some use case, then you cannot use the HDFS API. But  that 
is the case normally.

The NFS mount based workaround is not as efficient as accessing it through the 
HDFS interface. Hence the need.

> 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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