joshelser commented on issue #18: RATIS-523 RATIS-524 RATIS-525 RATIS-526 
RATIS-527 RATIS-533 Lots of cleanup on the LogService
URL: https://github.com/apache/incubator-ratis/pull/18#issuecomment-488792232
 
 
   ```2019-05-02 03:22:56,201 WARN server.GrpcServerProtocolService 
(LogUtils.java:warn(136)) - worker2.logservice.ratis.org_9999: Failed 
requestVote 
worker1.logservice.ratis.org_9999->worker2.logservice.ratis.org_9999#0
   org.apache.ratis.protocol.GroupMismatchException: 
worker2.logservice.ratis.org_9999: group-87E0933ED47B not found.
   ```
   
   Yeah, I've seen this too, but I don't know what group this is actually 
referring to. Something else to dig into. I was ignoring it for now.
   
   ```
   SEVERE: ~* Channel ManagedChannelImpl{logId=22, 
target=worker3.logservice.ratis.org:9999} was not shutdown properly!!! *~
   Make sure to call shutdown()/shutdownNow() and wait until awaitTermination() 
returns true.
   ```
   
   I'm guessing something around gRPC in the Ratis client code isn't closing 
stuff correctly in all situations. Another thing to come back to as it doesn't 
seem to be an immediate problem :)
   
   I've seen both of these since doing stuff in the LogService. I don't think 
they're new.

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