YARN-3617. Fix WindowsResourceCalculatorPlugin.getCpuFrequency() returning

always -1. Contributed by J.Andreina.

hadoop-yarn-project/CHANGES.txt

@@ -530,6 +530,9 @@ Release 2.8.0 - UNRELEASED
     YARN-3714. AM proxy filter can not get RM webapp address from
     yarn.resourcemanager.hostname.rm-id. (Masatake Iwasaki via xgong)
 
+    YARN-3617. Fix WindowsResourceCalculatorPlugin.getCpuFrequency()
+    returning always -1. (J.Andreina via devaraj)
+
 Release 2.7.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/WindowsResourceCalculatorPlugin.java

@@ -157,7 +157,7 @@ public class WindowsResourceCalculatorPlugin extends ResourceCalculatorPlugin {
   @Override
   public long getCpuFrequency() {
     refreshIfNeeded();
-    return -1;
+    return cpuFrequencyKhz;
   }
 
   /** {@inheritDoc} */