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