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[GitHub] [zookeeper] functioner edited a comment on pull request #1596: ZOOKEEPER-4203: Leader swallows the ZooKeeperServer.State.ERROR from Leader.LearnerCnxAcceptor in some concurrency condition

functioner edited a comment on pull request #1596:
URL: https://github.com/apache/zookeeper/pull/1596#issuecomment-984209856


   @eolivelli The state check & modification within `setState` method should be atomic as a whole, so `AtomicReference` is not enough (including the `updateAndGet` methods and so on). Now I use `synchronized` for the methods which read/write `state`.


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