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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2015/08/07 09:51:45 UTC

[jira] [Commented] (SPARK-9620) generated UnsafeProjection does not support many columns or large exressions

    [ https://issues.apache.org/jira/browse/SPARK-9620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14661458#comment-14661458 ] 

Reynold Xin commented on SPARK-9620:
------------------------------------

[~davies] can you look into this?

> generated UnsafeProjection does not support many columns or large exressions
> ----------------------------------------------------------------------------
>
>                 Key: SPARK-9620
>                 URL: https://issues.apache.org/jira/browse/SPARK-9620
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Davies Liu
>            Priority: Critical
>
> We put all the expressions in one function of UnsafeProjection, that could reach the 65k code size limit in JVM.
> We should split them into multiple functions, like that we do for MutableProjection and SafeProjection.



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