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Posted to issues@spark.apache.org by "Patrick Wendell (JIRA)" <ji...@apache.org> on 2014/09/16 01:13:49 UTC

[jira] [Updated] (SPARK-1412) Disable partial aggregation automatically when reduction factor is low

     [ https://issues.apache.org/jira/browse/SPARK-1412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Patrick Wendell updated SPARK-1412:
-----------------------------------
    Fix Version/s:     (was: 1.1.0)
                   1.2.0

> Disable partial aggregation automatically when reduction factor is low
> ----------------------------------------------------------------------
>
>                 Key: SPARK-1412
>                 URL: https://issues.apache.org/jira/browse/SPARK-1412
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.0.0
>            Reporter: Reynold Xin
>            Assignee: Michael Armbrust
>            Priority: Minor
>             Fix For: 1.2.0
>
>
> Once we see enough number of rows in partial aggregation and don't observe any reduction, the aggregate operator should just turn off partial aggregation. 



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