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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TEZ-338) Determine reduce task parallelism
Date Mon, 05 Aug 2013 22:51:48 GMT

    [ https://issues.apache.org/jira/browse/TEZ-338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13730084#comment-13730084
] 

Arun C Murthy commented on TEZ-338:
-----------------------------------

+1, good start.
                
> Determine reduce task parallelism
> ---------------------------------
>
>                 Key: TEZ-338
>                 URL: https://issues.apache.org/jira/browse/TEZ-338
>             Project: Apache Tez
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
>              Labels: TEZ-0.2.0
>
> Determine the parallelism of reduce tasks at runtime. This is important because its difficult
to determine this accurately before the job actually runs due to unknown data reduction ratios
in the intermediate stages.

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