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https://issues.apache.org/jira/browse/SPARK-24498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16702515#comment-16702515
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Reynold Xin commented on SPARK-24498:
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Why don't we close the ticket? I heard we would get mixed performance, and it
doesn't seem like worth it to add 500 lines of code for something that has
unclear value.
> Add JDK compiler for runtime codegen
> ------------------------------------
>
> Key: SPARK-24498
> URL: https://issues.apache.org/jira/browse/SPARK-24498
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Xiao Li
> Priority: Major
>
> In some cases, JDK compiler can generate smaller bytecode and take less time
> in compilation compared to Janino. However, in some cases, Janino is better.
> We should support both for our runtime codegen. Janino will be still our
> default runtime codegen compiler.
> See the related JIRAs in DRILL:
> - https://issues.apache.org/jira/browse/DRILL-1155
> - https://issues.apache.org/jira/browse/DRILL-4778
> - https://issues.apache.org/jira/browse/DRILL-5696
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