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https://issues.apache.org/jira/browse/IMPALA-11460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17758551#comment-17758551
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Daniel Becker commented on IMPALA-11460:
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I ran a benchmark and added the results in {{{}Async_benchmark.txt{}}}.
CodeGen cache was turned off for both the async and the sync case. It is a TCPH
benchmark with scale factor 2. The small scale factor was chosen because async
codegen is most useful for small, fast queries.
Overall the benchmark shows significant improvement (-28.65%) but TPCH-Q1 had a
regression of +7.87%.
> Enable ASYNC CODEGEN by default
> -------------------------------
>
> Key: IMPALA-11460
> URL: https://issues.apache.org/jira/browse/IMPALA-11460
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Abhishek Rawat
> Priority: Major
> Attachments: Async_benchmark.txt
>
>
> Would be good to do some additional testing and address any gaps and enable
> the feature by default.
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