Andrew Purtell created HBASE-12217:
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             Summary: Load based pushback for coprocessor invocations
                 Key: HBASE-12217
                 URL: https://issues.apache.org/jira/browse/HBASE-12217
             Project: HBase
          Issue Type: New Feature
            Reporter: Andrew Purtell


If a RegionServer host is already heavily loaded* then it might not be best to 
accept more work in the form of coprocessor invocations. This could generalize 
to all RPC work, perhaps as part of a broader admission control initiative, but 
I think it makes sense to start small in an obvious place.

*: We could use % CPU utilization or the UNIX 1min or 5min load average to 
determine this, and provide an option for choosing between those alternatives. 



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