[HDFS-11861] ipc.Client.Connection#sendRpcRequest should log request name

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.9.0, 3.0.0-alpha4, 2.8.2
• Component/s: ipc
• Labels: supportability
• Target Version/s: 2.9.0, 3.0.0-alpha4
• Assignee: John Zhuge
• Reporter: John Zhuge
• Created: 21/May/17 07:11
• Updated: 08/Jun/17 21:04
• Resolved: 07/Jun/17 22:55

Description

ipc.Client.Connection#sendRpcRequest only logs the call id.

                if (LOG.isDebugEnabled())
                  LOG.debug(getName() + " sending #" + call.id);

It'd be much more helpful to log request name for several benefits:

• Find out which requests sent to which target
• Correlate with the debug log in ipc.Server.Handler

Issue Links

• breaks: HADOOP-14511 WritableRpcEngine.Invocation#toString NPE on null parameters