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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-4844) Tez AM runs out of memory when vertex has high number of outputs
Date Mon, 11 Apr 2016 20:15:25 GMT

    [ https://issues.apache.org/jira/browse/PIG-4844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15235894#comment-15235894
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Daniel Dai commented on PIG-4844:
---------------------------------

Can we separate it into two ticket? I am completely fine with the AM memory change. The PigContext
change is more fundamental, we need to process with more care. Did you run through unit tests
and e2e tests?

> Tez AM runs out of memory when vertex has high number of outputs
> ----------------------------------------------------------------
>
>                 Key: PIG-4844
>                 URL: https://issues.apache.org/jira/browse/PIG-4844
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Rohini Palaniswamy
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.16.0
>
>         Attachments: PIG-4844-1-nowhitespacechanges.patch, PIG-4844-1.patch
>
>
>   AM runs out of memory when trying to respond to getTask() calls from container for
a vertex with large number of outputs (usually the case with multi-query when you group by
on multiple dimensions).  Problem is with the size of payload config associated with PigProcessor,
Input and Output. When there is >10 outputs size of the payload considerably increases
causing memory pressure.



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