Github user wangyangjun commented on the pull request:
https://github.com/apache/flink/pull/1527#issuecomment-176912402
Hello, @aljoscha ,
Thanks for your comment and suggestion. I will update the API. During my
benchmark tests of timeJoin, the feature of this implementation is quite good,
but the performance is bad. I will reimplement it with
[Guava](http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/collect/MapMaker.html).
Yes, I could add support for the Scala API.
Thanks
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