Github user WangTaoTheTonic commented on the issue:
https://github.com/apache/flink/pull/3599
Thanks for your comments @wenlong88 .
I also gave a thought about adding retry logic when zk failover, but this
part should modify `LeaderLatch` in curator, which is a 3rd party library, or
we can only add a our private LeaderLatch through coping most parts of the
implementation in curator.
Even with adding this AlwaysLeaderService, the JM failover can also go well
as RM will start a new instance.
about FLIP-6, I'll check the solution and find if anything can help with
this :)
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