ruanwenjun opened a new issue #5210:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/5210
**Describe the question**
If zookeeper is disconnect, the master server stop work, and when the
zookeeper reconnect, we need to restart the master server, the master server
can't automatic recovery.
Because when the zookeeper reconnect, treeCache will produce NODE_REMOVED
event, `ZKMasterClient` receive this event and add the server to deadNode. When
the `HeartBeatTask` check the master is on dead path, it will stop the
MasterServer.
**What are the current deficiencies and the benefits of improvement**
Improving the server availability.
**Which version of DolphinScheduler:**
-[1.3.6-preview]
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