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https://issues.apache.org/jira/browse/FLINK-15103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16991231#comment-16991231
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Xintong Song commented on FLINK-15103:
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[~pnowojski], [~sewen]
Sorry, it was my mistake to mark this commit as a [hotfix]. We had several
hotfix commits modifying default value of config options, where the changed
config options are newly introduced for the new feature and not yet activated
at the time of these commits. But this one obviously touches a previous exist
config option, with significant behavior / performance changes. Sorry for
overlooking it.
I've created a blocker issue for adding the documentation.
https://issues.apache.org/jira/browse/FLINK-15143
And I'm also willing to update the configurations for the benchmark tasks with
regressions. If you agree, please assign this issue to me. Thank you.
> Performance regression on 3.12.2019 in various benchmarks
> ---------------------------------------------------------
>
> Key: FLINK-15103
> URL: https://issues.apache.org/jira/browse/FLINK-15103
> Project: Flink
> Issue Type: Bug
> Components: Benchmarks
> Reporter: Piotr Nowojski
> Priority: Blocker
> Fix For: 1.10.0
>
>
> Various benchmarks show a performance regression that happened on December
> 3rd:
> [arrayKeyBy (probably the most easily
> visible)|http://codespeed.dak8s.net:8000/timeline/#/?exe=1&ben=arrayKeyBy&env=2&revs=200&equid=off&quarts=on&extr=on]
>
> [tupleKeyBy|http://codespeed.dak8s.net:8000/timeline/#/?exe=1&ben=tupleKeyBy&env=2&revs=200&equid=off&quarts=on&extr=on]
>
> [twoInputMapSink|http://codespeed.dak8s.net:8000/timeline/#/?exe=1&ben=twoInputMapSink&env=2&revs=200&equid=off&quarts=on&extr=on]
> [globalWindow (small
> one)|http://codespeed.dak8s.net:8000/timeline/#/?exe=1&ben=globalWindow&env=2&revs=200&equid=off&quarts=on&extr=on]
> and possible others.
> Probably somewhere between those commits: -8403fd4- 2d67ee0..60b3f2f
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