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https://issues.apache.org/jira/browse/HADOOP-19362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17905220#comment-17905220
 ] 

ASF GitHub Bot commented on HADOOP-19362:
-----------------------------------------

KeeProMise commented on code in PR #7224:
URL: https://github.com/apache/hadoop/pull/7224#discussion_r1882374273


##########
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java:
##########
@@ -668,9 +675,41 @@ void updateMetrics(Call call, long 
processingStartTimeNanos, boolean connDropped
     }
   }
 
-  void updateDeferredMetrics(String name, long processingTime) {
+  /**
+   * Update rpc metrics for defered calls.
+   * @param call The Rpc Call
+   * @param name Rpc method name
+   * @param processingTime processing call in ms unit.
+   */
+  void updateDeferredMetrics(Call call, String name, long processingTime) {
+    long completionTimeNanos = Time.monotonicNowNanos();
+    long arrivalTimeNanos = call.timestampNanos;
+
+    ProcessingDetails details = call.getProcessingDetails();
+    long waitTime =
+        details.get(Timing.LOCKWAIT, rpcMetrics.getMetricsTimeUnit());
+    long responseTime =
+        details.get(Timing.RESPONSE, rpcMetrics.getMetricsTimeUnit());
+    rpcMetrics.addRpcLockWaitTime(waitTime);
+    rpcMetrics.addRpcProcessingTime(processingTime);
+    rpcMetrics.addRpcResponseTime(responseTime);
     rpcMetrics.addDeferredRpcProcessingTime(processingTime);
     rpcDetailedMetrics.addDeferredProcessingTime(name, processingTime);
+    // don't include lock wait for detailed metrics.
+    processingTime -= waitTime;
+    rpcDetailedMetrics.addProcessingTime(name, processingTime);
+
+    // Overall processing time is from arrival to completion.
+    long overallProcessingTime = rpcMetrics.getMetricsTimeUnit()
+        .convert(completionTimeNanos - arrivalTimeNanos, TimeUnit.NANOSECONDS);
+    rpcDetailedMetrics.addOverallProcessingTime(name, overallProcessingTime);
+    callQueue.addResponseTime(name, call, details);
+    if (isLogSlowRPC()) {
+      logSlowRpcCalls(name, call, details);
+    }
+    if (details.getReturnStatus() == RpcStatusProto.SUCCESS) {
+      rpcMetrics.incrRpcCallSuccesses();
+    }

Review Comment:
   There is some duplicate code in this method and updateMetrics; we can 
extract the common code.



##########
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufRpcEngine2.java:
##########
@@ -425,28 +426,39 @@ static class ProtobufRpcEngineCallbackImpl
       private final RPC.Server server;
       private final Call call;
       private final String methodName;
-      private final long setupTime;
+      private final long callStartNanos;

Review Comment:
   Can callStartNanos be made an attribute of the call object, so that thread 
variables are not needed?





> RPC metrics should be updated correctly when call is defered.
> -------------------------------------------------------------
>
>                 Key: HADOOP-19362
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19362
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: common
>            Reporter: farmmamba
>            Assignee: farmmamba
>            Priority: Major
>              Labels: pull-request-available
>




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