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https://issues.apache.org/jira/browse/SPARK-12771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-12771.
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Resolution: Fixed
Assignee: Reynold Xin
Fix Version/s: 2.0.0
> Improve code generation for CaseWhen
> ------------------------------------
>
> Key: SPARK-12771
> URL: https://issues.apache.org/jira/browse/SPARK-12771
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Fix For: 2.0.0
>
>
> The generated code for CaseWhen uses a control variable "got" to make sure we
> do not evaluate more branches once a branch is true. Changing that to
> generate just simple "if / else" would be slightly more efficient.
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