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From ChengXiangLi <...@git.apache.org>
Subject [GitHub] flink pull request: [FLINK-2871] support outer join for hash join ...
Date Wed, 20 Jan 2016 10:02:03 GMT
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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