YARN-2802. ClusterMetrics to include AM launch and register delays. (Zhihai Xu via kasha)

hadoop-yarn-project/CHANGES.txt

@@ -78,6 +78,9 @@ Release 2.7.0 - UNRELEASED
     YARN-2157. Added YARN metrics in the documentaion. (Akira AJISAKA via
     jianhe)
 
+    YARN-2802. ClusterMetrics to include AM launch and register delays.
+    (Zhihai Xu via kasha)
+
   OPTIMIZATIONS
 
   BUG FIXES

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

@@ -30,6 +30,7 @@
 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
 import org.apache.hadoop.metrics2.lib.MetricsRegistry;
 import org.apache.hadoop.metrics2.lib.MutableGaugeInt;
+import org.apache.hadoop.metrics2.lib.MutableRate;
 import com.google.common.annotations.VisibleForTesting;
 
 @InterfaceAudience.Private
@@ -43,7 +44,9 @@ public class ClusterMetrics {
   @Metric("# of lost NMs") MutableGaugeInt numLostNMs;
   @Metric("# of unhealthy NMs") MutableGaugeInt numUnhealthyNMs;
   @Metric("# of Rebooted NMs") MutableGaugeInt numRebootedNMs;
-  
+  @Metric("AM container launch delay") MutableRate aMLaunchDelay;
+  @Metric("AM register delay") MutableRate aMRegisterDelay;
+
   private static final MetricsInfo RECORD_INFO = info("ClusterMetrics",
   "Metrics for the Yarn Cluster");
   
@@ -147,4 +150,12 @@ public void decrNumActiveNodes() {
     numActiveNMs.decr();
   }
 
+  public void addAMLaunchDelay(long delay) {
+    aMLaunchDelay.add(delay);
+  }
+
+  public void addAMRegisterDelay(long delay) {
+    aMRegisterDelay.add(delay);
+  }
+
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/attempt/RMAppAttemptImpl.java

@@ -65,6 +65,7 @@
 import org.apache.hadoop.yarn.security.AMRMTokenIdentifier;
 import org.apache.hadoop.yarn.security.client.ClientToAMTokenIdentifier;
 import org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService;
+import org.apache.hadoop.yarn.server.resourcemanager.ClusterMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
 import org.apache.hadoop.yarn.server.resourcemanager.RMServerUtils;
 import org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncherEvent;
@@ -152,8 +153,10 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
   private String proxiedTrackingUrl = "N/A";
   private long startTime = 0;
   private long finishTime = 0;
+  private long launchAMStartTime = 0;
+  private long launchAMEndTime = 0;
 
-  // Set to null initially. Will eventually get set 
+  // Set to null initially. Will eventually get set
   // if an RMAppAttemptUnregistrationEvent occurs
   private FinalApplicationStatus finalStatus = null;
   private final StringBuilder diagnostics = new StringBuilder();
@@ -1261,6 +1264,12 @@ private static class AMLaunchedTransition extends BaseTransition {
     @Override
     public void transition(RMAppAttemptImpl appAttempt,
                             RMAppAttemptEvent event) {
+      if (event.getType() == RMAppAttemptEventType.LAUNCHED) {
+        appAttempt.launchAMEndTime = System.currentTimeMillis();
+        long delay = appAttempt.launchAMEndTime -
+            appAttempt.launchAMStartTime;
+        ClusterMetrics.getMetrics().addAMLaunchDelay(delay);
+      }
       // Register with AMLivelinessMonitor
       appAttempt.attemptLaunched();
 
@@ -1345,7 +1354,8 @@ private static final class AMRegisteredTransition extends BaseTransition {
     @Override
     public void transition(RMAppAttemptImpl appAttempt,
         RMAppAttemptEvent event) {
-
+      long delay = System.currentTimeMillis() - appAttempt.launchAMEndTime;
+      ClusterMetrics.getMetrics().addAMRegisterDelay(delay);
       RMAppAttemptRegistrationEvent registrationEvent
           = (RMAppAttemptRegistrationEvent) event;
       appAttempt.host = registrationEvent.getHost();
@@ -1822,6 +1832,7 @@ public YarnApplicationAttemptState createApplicationAttemptState() {
   }
 
   private void launchAttempt(){
+    launchAMStartTime = System.currentTimeMillis();
     // Send event to launch the AM Container
     eventHandler.handle(new AMLauncherEvent(AMLauncherEventType.LAUNCH, this));
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestClusterMetrics.java

@@ -0,0 +1,60 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.yarn.server.resourcemanager;
+
+import org.apache.hadoop.metrics2.MetricsSystem;
+import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TestClusterMetrics {
+
+  private ClusterMetrics metrics;
+  /**
+   * Test aMLaunchDelay and aMRegisterDelay Metrics
+   */
+  @Test
+  public void testAmMetrics() throws Exception {
+    assert(metrics != null);
+    Assert.assertTrue(!metrics.aMLaunchDelay.changed());
+    Assert.assertTrue(!metrics.aMRegisterDelay.changed());
+    metrics.addAMLaunchDelay(1);
+    metrics.addAMRegisterDelay(1);
+    Assert.assertTrue(metrics.aMLaunchDelay.changed());
+    Assert.assertTrue(metrics.aMRegisterDelay.changed());
+  }
+
+  @Before
+  public void setup() {
+    DefaultMetricsSystem.initialize("ResourceManager");
+    metrics = ClusterMetrics.getMetrics();
+  }
+
+  @After
+  public void tearDown() {
+    ClusterMetrics.destroy();
+
+    MetricsSystem ms = DefaultMetricsSystem.instance();
+    if (ms.getSource("ClusterMetrics") != null) {
+      DefaultMetricsSystem.shutdown();
+    }
+  }
+}