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https://issues.apache.org/jira/browse/SPARK-24498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16527036#comment-16527036
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Takeshi Yamamuro commented on SPARK-24498:
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I added some benchmark results on different conditions: sf=5 adn
splitConsumeFuncByOperator=false (I didn't still get any benefit though)
> 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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