svn merge -c 1297248 from trunk to branch-0.23.2 FIXES MAPREDUCE-3964. ResourceManager does not have JVM metrics (Jason Lowe via bobby)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23.2@1297251 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -139,6 +139,9 @@ Release 0.23.2 - UNRELEASED
     MAPREDUCE-3009. Fixed node link on JobHistory webapp. (chackaravarthy via 
     vinodkv)
 
+    MAPREDUCE-3964. ResourceManager does not have JVM metrics (Jason Lowe via
+    bobby)
+
 Release 0.23.1 - 2012-02-17
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java

@@ -27,7 +27,9 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.metrics2.MetricsSystem;
 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
+import org.apache.hadoop.metrics2.source.JvmMetrics;
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.StringUtils;
@@ -449,7 +451,8 @@ public class ResourceManager extends CompositeService implements Recoverable {
     }
 
     startWepApp();
-    DefaultMetricsSystem.initialize("ResourceManager");
+    MetricsSystem ms = DefaultMetricsSystem.initialize("ResourceManager");
+    JvmMetrics.create("ResourceManager", null, ms);
     try {
       rmDTSecretManager.startThreads();
     } catch(IOException ie) {