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Re:Joining a billion rows 20x faster than Apache Spark by j-m-o on Friday February 10, 2017 @09:21AM (#13615491)
Hey, I'm the phoenix-spark author here. You're totally right, right now there is a lot of dumb shuffling around for certain operations. Hopefully some of that will get fixed up in the next release [1].

[1] https://issues.apache.org/jira/browse/PHOENIX-3600

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