Bulls1986 edited a comment on pull request #6697:
URL: https://github.com/apache/dolphinscheduler/pull/6697#issuecomment-961594671


   This problem occurs when all nodes are deployed on k8s, and all registered 
addresses are svc hostname.This problem occurs when worker pods have some 
problem and frequently restart. At this time, the underlying ip of the same svc 
host has changed, but the channel in the cache is still connected to the 
previous pods.So here only need to clean up when the sending fails and exceed 
the limit, next time you will go to the channel creation logic again, at this 
time, the svc will be parsed into the pods ip of the latest worker.


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