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https://issues.apache.org/jira/browse/PIG-4884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15284864#comment-15284864
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Daniel Dai commented on PIG-4884:
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I see, find the description in PIG-3637. +1.
> Tez needs to use DistinctCombiner.Combine
> -----------------------------------------
>
> Key: PIG-4884
> URL: https://issues.apache.org/jira/browse/PIG-4884
> Project: Pig
> Issue Type: Improvement
> Reporter: Rohini Palaniswamy
> Assignee: Rohini Palaniswamy
> Fix For: 0.16.0
>
> Attachments: PIG-4884-1.patch
>
>
> Was investigating a job slowness and realized that Tez is not using
> DistinctCombiner.Combine which is more efficient.
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