Github user ChengXiangLi commented on the pull request:
https://github.com/apache/flink/pull/1469#issuecomment-173151704
I did simple regression test based on `HashVsSortMiniBenchmark`, the result
looks like:
Test | Before | After
------ | ------ | --------
testBuildFirst | 6.63s | 6.65s
testBuildSecond | 3.7s | 3.8s
The inner join performance is not influenced by this PR, which fit into my
expectation. There is a flag called `buildsideOuterJoin` in `MutableHashTable`,
all the extra effort only happens while `buildSideOuterJoin` is true.
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