xinglin commented on code in PR #5730:
URL: https://github.com/apache/hadoop/pull/5730#discussion_r1228468230


##########
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java:
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@@ -636,10 +637,17 @@ void updateMetrics(Call call, long startTime, boolean 
connDropped) {
     processingTime -= waitTime;
     String name = call.getDetailedMetricsName();
     rpcDetailedMetrics.addProcessingTime(name, processingTime);
+    // Overall processing time is from arrival to completion.
+    long overallProcessingTime = rpcMetrics.getMetricsTimeUnit()

Review Comment:
   Hi @goiri,
   
   I don't see time unit for other _Times_ in the same function. Should we 
follow the same pattern or should we add unit for them all? 
   
   ```
       long queueTime = details.get(Timing.QUEUE, RpcMetrics.TIMEUNIT);
       rpcMetrics.addRpcQueueTime(queueTime);
       long processingTime =
           details.get(Timing.PROCESSING, RpcMetrics.TIMEUNIT);
       long waitTime =
           details.get(Timing.LOCKWAIT, RpcMetrics.TIMEUNIT);
       rpcMetrics.addRpcLockWaitTime(waitTime);
       rpcMetrics.addRpcProcessingTime(processingTime);
   ```



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