Troubleshoot RegionServer grouping
When using rsgroup, if you encounter an issue such as the one in the following example, check the log to see what is causing the issue. If a rsgroup operation is unresponsive, you must restart the HBase Master.
An example error of what you will see if you start using rsgroup but the required coprocessor is not found:
ERROR: org.apache.hadoop.hbase.exceptions.UnknownProtocolException: No registered master coprocessor service found for name RSGroupAdminService at org.apache.hadoop.hbase.master.MasterRpcServices.execMasterService(MasterRpcServices.java:604) at org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:1140) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:277) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:257)