question Re: Hbase showing errors:CallQueueTooBigException in Support Questions

Hbase showing errors:CallQueueTooBigException

Felix-Han — Tue, 21 Apr 2026 07:48:19 GMT

There are many same errors showing at back-end and nothing return to front-end.

error message as below:

2022-10-31T01:42:15.569Z, RpcRetryingCaller{globalStartTime=1667180497142, pause=100, maxAttempts=11}, org.apache.hadoop.hbase.CallQueueTooBigException: Call queue is full on XXXXX,16020,1663311727745, too many items queued ?

env: OpenShift container + Hbase

Re: Hbase showing errors:CallQueueTooBigException

rki_ — Tue, 01 Nov 2022 13:18:11 GMT

HI @Felix-Han Based on the Error, it seems there are too many request coming to that specific Region server thereby consuming the handlers it has.

So may want to check if multiple clients are hitting the same Region server ( hotspot) or try to raise the handler count.

https://my.cloudera.com/knowledge/CallQueueTooBigException--Call-queue-is-full-on-000060020-too?id=73901

Re: Hbase showing errors:CallQueueTooBigException

DianaTorres — Fri, 04 Nov 2022 17:46:10 GMT

@Felix-Han Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future. Thanks

Re: Hbase showing errors:CallQueueTooBigException

smdas — Mon, 07 Nov 2022 09:26:05 GMT

Hello @Felix-Han

Hope you are doing well. Since the Post by @rki_ referencing [1] for your team would fix the CQTBE for your team, We shall mark the Post as resolved. If your team have any further ask, Feel free to Update the Post likewise.

Regards, Smarak

[1] https://my.cloudera.com/knowledge/CallQueueTooBigException--Call-queue-is-full-on-000060020-too?id=73901