Processor in session meta is not valid

[zzzcq]

When expanding nodemanagers，new nodemanager pid column session_processor table = -1，and it still exists after removal.

And when eggroll.core.grpc.channel.keepalive.timeout.sec use default value 3600, grpc timeout, try to turn it smaller , it works normally, why?

[Edwin-Xu]

same problem, it recovers after removeing external nodemanagers

[Edwin-Xu]

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