From d08b8c801a908b4242e7b21a54f3b1e4072f1eae Mon Sep 17 00:00:00 2001
From: Akira Ajisaka <aajisaka@apache.org>
Date: Tue, 26 Sep 2017 16:45:39 +0900
Subject: [PATCH] HADOOP-14893. WritableRpcEngine should use Time.monotonicNow.
 Contributed by Chetna Chaudhari.

---
 .../main/java/org/apache/hadoop/ipc/WritableRpcEngine.java    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/WritableRpcEngine.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/WritableRpcEngine.java
index fa0726d401..f2b5862372 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/WritableRpcEngine.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/WritableRpcEngine.java
@@ -231,7 +231,7 @@ public Object invoke(Object proxy, Method method, Object[] args)
       throws Throwable {
       long startTime = 0;
       if (LOG.isDebugEnabled()) {
-        startTime = Time.now();
+        startTime = Time.monotonicNow();
       }
 
       // if Tracing is on then start a new span for this rpc.
@@ -251,7 +251,7 @@ public Object invoke(Object proxy, Method method, Object[] args)
         if (traceScope != null) traceScope.close();
       }
       if (LOG.isDebugEnabled()) {
-        long callTime = Time.now() - startTime;
+        long callTime = Time.monotonicNow() - startTime;
         LOG.debug("Call: " + method.getName() + " " + callTime);
       }
       return value.get();