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https://issues.apache.org/jira/browse/FLINK-7617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16165836#comment-16165836
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ASF GitHub Bot commented on FLINK-7617:
---------------------------------------
Github user JingsongLi commented on the issue:
https://github.com/apache/flink/pull/4668
## Performance
- HashVsSortMiniBenchmark: use buildSideOuterJoin
testBuildFirst: 16s 208ms(before) 10s 98ms(after)
testBuildSecond: 7s 793ms(before) 6s 67ms(after)
R: @KurtYoung
> Remove string format in BitSet to improve the performance of
> BuildSideOuterjoin
> -------------------------------------------------------------------------------
>
> Key: FLINK-7617
> URL: https://issues.apache.org/jira/browse/FLINK-7617
> Project: Flink
> Issue Type: Improvement
> Components: Local Runtime
> Reporter: Jingsong Lee
>
> When using BuildSideOuterjoin, will frequently call Bitset.set and get, there
> will be
> Preconditions.checkArgument (index <bitLength && index> = 0,
> String.format ("Input Index [% d] is larger than BitSet available size [%
> d].", Index, bitLength));
> Of the check, String.format will lead to a sharp decline performance.
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