I have done perf testing for this PR and here are the results: **1. Controller fails over** **[Trunk]** ``` [2018-09-01 00:47:20,564] INFO [Controller id=1495] 1495 successfully elected as the controller (kafka.controller.KafkaController) [2018-09-01 00:47:27,938] INFO [Controller id=1495] Starting the controller scheduler (kafka.controller.KafkaController) ```
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