Todd Lipcon created HADOOP-8624:
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             Summary: ProtobufRpcEngine should log all RPCs if TRACE logging is 
enabled
                 Key: HADOOP-8624
                 URL: https://issues.apache.org/jira/browse/HADOOP-8624
             Project: Hadoop Common
          Issue Type: Improvement
          Components: ipc
    Affects Versions: 3.0.0, 2.2.0-alpha
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
            Priority: Minor


Since all RPC requests/responses are now ProtoBufs, it's easy to add a TRACE 
level logging output for ProtobufRpcEngine that actually shows the full content 
of all calls. This is very handy especially when writing/debugging unit tests, 
but might also be useful to enable at runtime for short periods of time to 
debug certain production issues.

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