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https://issues.apache.org/jira/browse/SPARK-17115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-17115.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.1.0
2.0.1
Issue resolved by pull request 14692
[https://github.com/apache/spark/pull/14692]
> Improve the performance of UnsafeProjection for wide table
> ----------------------------------------------------------
>
> Key: SPARK-17115
> URL: https://issues.apache.org/jira/browse/SPARK-17115
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Davies Liu
> Assignee: Davies Liu
> Fix For: 2.0.1, 2.1.0
>
>
> We increase the threshold for splitting the generate code for expressions to
> 64K in 2.0 by accident (too optimistic), which could cause bad performance
> (the huge method may not be JITed), we should decrease that to 16K.
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