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From "Gary Helmling (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3405) Allow HBaseRpcMetrics to register custom interface methods
Date Fri, 31 Dec 2010 05:18:45 GMT
Allow HBaseRpcMetrics to register custom interface methods

                 Key: HBASE-3405
                 URL: https://issues.apache.org/jira/browse/HBASE-3405
             Project: HBase
          Issue Type: Improvement
          Components: ipc
            Reporter: Gary Helmling
            Priority: Minor

Opened from comments on HBASE-2997.  James Kennedy notes:

HBaseRpcMetrics is now logging a WARN message every time it encounters an unregistered RPC

In my case I now get huge log files filled with these warnings because the hbase-trx transactional
extension of HBase uses a subclass of HRegionServer that adds new interface methods.

It's easy enough to tell log4j to ignore HBaseRpcMetrics output.

However, it would be nice if the Server/HRegionServer HBaseRpcMetrics mechanism was more extensible
so I could pass down new interfaces or grab the HBaseRpcMetrics object to add interfaces from
up top...

{{HBaseRpcMetrics}} already has a public method {{createMetrics(Class)}} to register method
counters.  We just need a way to expose the metrics class to allow the region server subclass
to call it -- add a {{getMetrics()}} method to {{RpcServer}} and {{HBaseServer}}.

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