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https://issues.apache.org/jira/browse/PIG-4844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15236193#comment-15236193
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Daniel Dai commented on PIG-4844:
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+1
> 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,
> PIG-4844-2.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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