StephanEwen commented on issue #6544: [FLINK-8532] [Streaming] modify RebalancePartitioner to use a random partition as its first partition URL: https://github.com/apache/flink/pull/6544#issuecomment-414745814 From a performance/hot-code-path point of view, it would be good to pull the initialization out of the function. This is otherwise an additional repeated branch per record and more instructions in the method that works against inlining.
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