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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/06/24 00:22:42 UTC

[jira] [Commented] (SPARK-8579) Support arbitrary object in UnsafeRow

    [ https://issues.apache.org/jira/browse/SPARK-8579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14598481#comment-14598481 ] 

Apache Spark commented on SPARK-8579:
-------------------------------------

User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/6959

> Support arbitrary object in UnsafeRow
> -------------------------------------
>
>                 Key: SPARK-8579
>                 URL: https://issues.apache.org/jira/browse/SPARK-8579
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>            Reporter: Davies Liu
>            Assignee: Davies Liu
>
> It's common to run count(distinct xxx) in SQL, the data type will be UDT of OpenHashSet, it's good that we could use UnsafeRow to reducing the memory usage during aggregation.
> Also for DecimalType, which could be used inside the grouping key.



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