Github user Tagar commented on the issue: https://github.com/apache/zeppelin/pull/2802 @zjffdu I don't have a reproducible case yet. This error hasn't been very consistent for me so it might be also a side effect of another problem. That's why I asked above if we could capture exceptions in grpc better. Also check what you think of the suggestion made in grpc/grpc-java#4086 to make a new grpc stream for each call?
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