MAPREDUCE-6391. util/Timer.cc completely misunderstands _POSIX_CPUTIME (Alan Burlison via aw)

hadoop-mapreduce-project/CHANGES.txt

@@ -589,6 +589,9 @@ Release 2.8.0 - UNRELEASED
     MAPREDUCE-6484. Yarn Client uses local address instead of RM address as
     token renewer in a secure cluster when RM HA is enabled. (Zhihai Xu)
 
+    MAPREDUCE-6391. util/Timer.cc completely misunderstands _POSIX_CPUTIME
+    (Alan Burlison via aw)
+
    MAPREDUCE-6480. archive-logs tool may miss applications (rkanter)
 
    MAPREDUCE-6494. Permission issue when running archive-logs tool as

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask/src/main/native/src/util/Timer.cc

@@ -40,7 +40,7 @@ static uint64_t clock_get() {
 
 static uint64_t clock_get() {
   timespec ts;
-  clock_gettime(_POSIX_CPUTIME, &ts);
+  clock_gettime(CLOCK_REALTIME, &ts);
   return 1000000000 * ts.tv_sec + ts.tv_nsec;
 }