[jira] [Created] (HBASE-13375) Provide HBase superuser higher priority over other users in the RPC handling

["Devaraj Das (JIRA)" <ji...@apache.org>]

Devaraj Das created HBASE-13375:
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             Summary: Provide HBase superuser higher priority over other users in the RPC handling
                 Key: HBASE-13375
                 URL: https://issues.apache.org/jira/browse/HBASE-13375
             Project: HBase
          Issue Type: Improvement
          Components: rpc
            Reporter: Devaraj Das
             Fix For: 1.1.0


HBASE-13351 annotates Master RPCs so that RegionServer RPCs are treated with a higher priority compared to user RPCs (and they are handled by a separate set of handlers, etc.). It may be good to stretch this to users too - hbase superuser (configured via hbase.superuser) gets higher priority over other users in the RPC handling. That way the superuser can always perform administrative operations on the cluster even if all the normal priority handlers are occupied (for example, we had a situation where all the master's handlers were tied up with many simultaneous createTable RPC calls from multiple users and the master wasn't able to perform any operations initiated by the admin). (Discussed this some with [~enis] and [~elserj]).
Does this make sense to others?



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