banmoy commented on issue #8611: [FLINK-12693][state] Store state per key-group in CopyOnWriteStateTable URL: https://github.com/apache/flink/pull/8611#issuecomment-499463212 @carp84 I run the benchmark on 3 servers, and on each server, I run the benchmark 3 times both for the base code and this PR. The result is as follows, and I think there is no performance regression. 
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