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https://issues.apache.org/jira/browse/SPARK-9020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-9020.
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Resolution: Fixed
Fix Version/s: 1.5.0
> Support mutable state in code gen expressions
> ---------------------------------------------
>
> Key: SPARK-9020
> URL: https://issues.apache.org/jira/browse/SPARK-9020
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Wenchen Fan
> Fix For: 1.5.0
>
>
> Some expressions have state in them (e.g. Rand, MonotonicallyIncreasingID).
> We currently don't support code-gen any expressions that have mutable states.
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