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Posted to issues@madlib.apache.org by "Frank McQuillan (JIRA)" <ji...@apache.org> on 2019/06/18 21:45:00 UTC

[jira] [Closed] (MADLIB-1361) Pivot: Fix array_agg + distinct scaling issue on gpdb

     [ https://issues.apache.org/jira/browse/MADLIB-1361?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Frank McQuillan closed MADLIB-1361.
-----------------------------------
    Resolution: Fixed

https://github.com/apache/madlib/pull/413

> Pivot: Fix array_agg + distinct scaling issue on gpdb 
> ------------------------------------------------------
>
>                 Key: MADLIB-1361
>                 URL: https://issues.apache.org/jira/browse/MADLIB-1361
>             Project: Apache MADlib
>          Issue Type: Bug
>          Components: Module: Utilities
>            Reporter: Orhan Kislal
>            Priority: Major
>             Fix For: v1.16
>
>
> With large datasets, pivot fails because of the array_agg(distinct) query. This is because array_agg collects the values first and filters the distinct values later. This causes the array_agg to go out of memory.



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