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https://issues.apache.org/jira/browse/PIG-4905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15297225#comment-15297225
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Rohini Palaniswamy commented on PIG-4905:
-----------------------------------------

bq. One thing still mysterious to me is the issue not exist in tez local mode 
when I test.
  I was using tez_local mode only initially to verify the issue and test the 
fix. Issue did exist there. 

bq. Pig does set 0 reduce. I don't know which part of Tez code actually create 
the empty dir.
   Output dir will always be created by FileOutputCommitter.setupJob by the AM 
and reduce of 0 does not matter. The actual issue was that empty output file 
was not created and the output directory was empty.

> Input of empty dir does not produce empty output file in Tez
> ------------------------------------------------------------
>
>                 Key: PIG-4905
>                 URL: https://issues.apache.org/jira/browse/PIG-4905
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Rohini Palaniswamy
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.16.0
>
>         Attachments: PIG-4905-1.patch, PIG-4905-2.patch
>
>




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