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https://issues.apache.org/jira/browse/SPARK-8713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14606595#comment-14606595
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Apache Spark commented on SPARK-8713:
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User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/7101
> Support codegen for not thread-safe expressions
> -----------------------------------------------
>
> Key: SPARK-8713
> URL: https://issues.apache.org/jira/browse/SPARK-8713
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Davies Liu
> Assignee: Davies Liu
>
> Currently, we disable codegen if any expression is not thread safe. We should
> support that, but disable caching the compiled expresssions.
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