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https://issues.apache.org/jira/browse/HADOOP-6111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12724417#action_12724417
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Vinod K V commented on HADOOP-6111:
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Permissions of the paths created should be changed using java 6 api to set 
permission instead of costly spawning chmod processes. Java api doesn't cover 
all possible combinations of unix permissions, particularly group permissions 
separate from others which are unrecognizable on Windows. Despite this, using 
java api would be fast and should address most of the common requirements.


> Support in LocalDirAllocator to set permissions of the paths created.
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-6111
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6111
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>            Reporter: Vinod K V
>
> Support is needed in LocalDirAllocator to set permissions of the paths 
> created. This is needed for HADOOP-4491.

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