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Posted to issues@tez.apache.org by "Bikas Saha (JIRA)" <ji...@apache.org> on 2013/12/18 04:56:07 UTC

[jira] [Commented] (TEZ-681) Grouping generates incorrect splits if multiple DNs run on a single node

    [ https://issues.apache.org/jira/browse/TEZ-681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13851333#comment-13851333 ] 

Bikas Saha commented on TEZ-681:
--------------------------------

I will look at this. Should fix my own bugs :P Thanks for the initial patch. I may build on this.

> Grouping generates incorrect splits if multiple DNs run on a single node
> ------------------------------------------------------------------------
>
>                 Key: TEZ-681
>                 URL: https://issues.apache.org/jira/browse/TEZ-681
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Siddharth Seth
>            Priority: Critical
>         Attachments: grouping_tmp_patch.txt
>
>
> When running multiple DNs on a single node (MiniDFSCluster for example), grouping ends up using the same split multiple times while grouping - so the end result is Grouped splits with some original splits repeated, and others completely missed out.



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