I have a small CDH cluster for data processing. The cluster spans two computer rooms and the DataNodes are scattered in these two computer rooms. The tasks of MR and Spark are normal, but Impala always prompts exceptions, and the exception error is as follows:
Looking at the error, it looks like RPC call are timing out and there can be multiple reasons for the same, to get the RCA on this we would require your impala profile and the coordinator logs covering the issue time.
@wbaihp, has any of the replies helped resolve your issue? If so, can you please mark the appropriate reply as the solution? It will make it easier for others to find the answer in the future.