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Posted to dev@pig.apache.org by "Daniel Dai (JIRA)" <ji...@apache.org> on 2016/05/15 21:48:12 UTC

[jira] [Commented] (PIG-4884) Tez needs to use DistinctCombiner.Combine

    [ https://issues.apache.org/jira/browse/PIG-4884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283980#comment-15283980 ] 

Daniel Dai commented on PIG-4884:
---------------------------------

{code}
// Avoid log spamming
if (firstTime) {
...
}
{code}

You mean there will be multiple invocations of setup for a vertex?

> 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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