NiFi PutHBaseCell failing

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NiFi PutHBaseCell failing



I am writing data to HBase with NiFi (v1.4) using PutHBase cell, we process ~300 million inserts a day. At times we receive bulletins:



Failed to send StandardFlowFileRecord...to HBase due to RetriesExhaustedWithDetailsException: Failed x actions: ConnectionClosingException: y times, IOException: z times, routing to failure



I have routed failure back into PutHBaseCell - my understanding is periodic failure is expected/normal when HBase is splitting a region, and indeed after a short period of time the failed records are successfully inserted.



However, at least once a day, this issue does not clear up. The error above appears in the NiFi logs w/o end, and the only way we are able to fix it is to restart NiFi, only to see it happen again in a day or so.



Any ideas on how to investigate/correct this issue would be immensely appreciated. Our HBase/Hadoop (Cloudera distribution) admin has not found a smoking gun on the HBase side of things (HBase config and logs).









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