Add gRPC connection monitor and fix related bug #665
Merged
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Signed-off-by: Smityz smityz@qq.com
fix: #522 #653
After a tikv server restart, the grpc connection state on the client becomes IDLE and needs a request to be sent through this connection or a manual connect to change it to the READY state. In the current implementation, I believe trying to
Connect()
when the state is IDLE is a relatively small modification.And add a monitor of grpc connection state can help us to find related bugs