i3wangyi edited a comment on issue #662: Mitigate controller leadership switch latency - improve leader -> standby URL: https://github.com/apache/helix/pull/662#issuecomment-572805514 > Logically, it sounds good to me. But I think this is not the majority contribution in LeaderSwitch when controller is trying acquiring leadership, right? > > How much it reduces the overhead? No, the optimization is only for leader -> standby, one data point shows a 10X latency improvement (from 1700ms -> 170ms); For optimizing the other part of the story: standby -> leader, there're different options, I will explore them later in different PRs.
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