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From "Dmitriy V. Ryaboy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-2888) Improve performance of POPartialAgg
Date Sun, 02 Sep 2012 22:51:07 GMT

     [ https://issues.apache.org/jira/browse/PIG-2888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Dmitriy V. Ryaboy updated PIG-2888:

       Resolution: Fixed
    Fix Version/s: 0.11
           Status: Resolved  (was: Patch Available)
> Improve performance of POPartialAgg
> -----------------------------------
>                 Key: PIG-2888
>                 URL: https://issues.apache.org/jira/browse/PIG-2888
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Dmitriy V. Ryaboy
>            Assignee: Dmitriy V. Ryaboy
>             Fix For: 0.11
>         Attachments: partialagg_patch_1.patch, partialagg_patch_2.patch, partialagg_patch_3.patch,
partialagg_patch_4.patch, partialagg_patch_5.patch, partialagg_patch_6.patch, PIG-2888.final.patch
> During performance testing, we found that POPartialAgg can cause performance degradation
for Pig jobs when the Algebraic UDFs it's being applied to aren't well suited to the operator's
assumptions. Changing the implementation to a more flexible hash-based model can provide significant
performance improvements.

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