Github user HeartSaVioR commented on the issue: https://github.com/apache/storm/pull/2270 Logically it looks good. Only consideration is the implementation of chooseTasks(), given that it is critical path. The method will do concurrent hash map lookup tasks + 2 (including containsKey) times, which might be heavy for handling number of requests. Do you have any performance test result, like TVL with various rate? Maybe you want to optimize to catch up with other groupers, given that we are doing various optimization for other groupers implementation.
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