YARN-4498. Application level node labels stats to be available in REST. Contributed by Bibin A Chundatt

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/AppInfo.java

@@ -39,7 +39,9 @@ import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
-import org.apache.hadoop.yarn.util.ConverterUtils;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerApp;
 import org.apache.hadoop.yarn.util.Times;
 import org.apache.hadoop.yarn.webapp.util.WebAppUtils;
 
@@ -109,6 +111,8 @@ public class AppInfo {
   protected String appNodeLabelExpression;
   protected String amNodeLabelExpression;
 
+  protected ResourcesInfo resourceInfo;
+
   public AppInfo() {
   } // JAXB needs this
 
@@ -218,6 +222,19 @@ public class AppInfo {
           app.getApplicationSubmissionContext().getNodeLabelExpression();
       amNodeLabelExpression = (unmanagedApplication) ? null
           : app.getAMResourceRequest().getNodeLabelExpression();
+
+      // Setting partition based resource usage of application
+      ResourceScheduler scheduler = rm.getRMContext().getScheduler();
+      if (scheduler instanceof CapacityScheduler) {
+        RMAppAttempt attempt = app.getCurrentAppAttempt();
+        if (null != attempt) {
+          FiCaSchedulerApp ficaAppAttempt = ((CapacityScheduler) scheduler)
+              .getApplicationAttempt(attempt.getAppAttemptId());
+          resourceInfo = null != ficaAppAttempt
+              ? new ResourcesInfo(ficaAppAttempt.getSchedulingResourceUsage())
+              : new ResourcesInfo();
+        }
+      }
     }
   }
 
@@ -388,4 +405,8 @@ public class AppInfo {
   public String getAmNodeLabelExpression() {
     return this.amNodeLabelExpression;
   }
+
+  public ResourcesInfo getResourceInfo() {
+    return resourceInfo;
+  }
 }

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

@@ -0,0 +1,226 @@
+/**
+ * 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.webapp;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+
+import javax.ws.rs.core.MediaType;
+
+import org.apache.hadoop.yarn.api.records.ContainerId;
+import org.apache.hadoop.yarn.api.records.NodeId;
+import org.apache.hadoop.yarn.api.records.NodeLabel;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.yarn.server.resourcemanager.MockAM;
+import org.apache.hadoop.yarn.server.resourcemanager.MockNM;
+import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
+import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
+import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration;
+import org.apache.hadoop.yarn.webapp.GenericExceptionHandler;
+import org.apache.hadoop.yarn.webapp.GuiceServletConfig;
+import org.apache.hadoop.yarn.webapp.JerseyTestBase;
+import org.codehaus.jettison.json.JSONArray;
+import org.codehaus.jettison.json.JSONException;
+import org.codehaus.jettison.json.JSONObject;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Sets;
+import com.google.inject.Guice;
+import com.google.inject.servlet.ServletModule;
+import com.sun.jersey.api.client.ClientResponse;
+import com.sun.jersey.api.client.WebResource;
+import com.sun.jersey.guice.spi.container.servlet.GuiceContainer;
+import com.sun.jersey.test.framework.WebAppDescriptor;
+
+/**
+ * Tests partition resource usage per application.
+ *
+ */
+public class TestRMWebServiceAppsNodelabel extends JerseyTestBase {
+
+  private static final int AM_CONTAINER_MB = 1024;
+
+  private static RMNodeLabelsManager nodeLabelManager;
+
+  private static MockRM rm;
+  private static CapacitySchedulerConfiguration csConf;
+  private static YarnConfiguration conf;
+
+  private static class WebServletModule extends ServletModule {
+
+    private static final String LABEL_X = "X";
+
+    @Override
+    protected void configureServlets() {
+      bind(JAXBContextResolver.class);
+      bind(RMWebServices.class);
+      bind(GenericExceptionHandler.class);
+      csConf = new CapacitySchedulerConfiguration();
+      setupQueueConfiguration(csConf);
+      conf = new YarnConfiguration(csConf);
+      conf.setClass(YarnConfiguration.RM_SCHEDULER, CapacityScheduler.class,
+          ResourceScheduler.class);
+      rm = new MockRM(conf);
+      Set<NodeLabel> labels = new HashSet<NodeLabel>();
+      labels.add(NodeLabel.newInstance(LABEL_X));
+      try {
+        nodeLabelManager = rm.getRMContext().getNodeLabelManager();
+        nodeLabelManager.addToCluserNodeLabels(labels);
+      } catch (Exception e) {
+        Assert.fail();
+      }
+      bind(ResourceManager.class).toInstance(rm);
+      serve("/*").with(GuiceContainer.class);
+    }
+  };
+
+  public TestRMWebServiceAppsNodelabel() {
+    super(new WebAppDescriptor.Builder(
+        "org.apache.hadoop.yarn.server.resourcemanager.webapp")
+            .contextListenerClass(GuiceServletConfig.class)
+            .filterClass(com.google.inject.servlet.GuiceFilter.class)
+            .contextPath("jersey-guice-filter").servletPath("/").build());
+  }
+
+  private static void setupQueueConfiguration(
+      CapacitySchedulerConfiguration config) {
+
+    // Define top-level queues
+    config.setQueues(CapacitySchedulerConfiguration.ROOT,
+        new String[]{"a", "default"});
+
+    final String queueA = CapacitySchedulerConfiguration.ROOT + ".a";
+    config.setCapacity(queueA, 50f);
+    config.setMaximumCapacity(queueA, 50);
+
+    final String defaultQueue =
+        CapacitySchedulerConfiguration.ROOT + ".default";
+    config.setCapacity(defaultQueue, 50f);
+    config.setCapacityByLabel(CapacitySchedulerConfiguration.ROOT, "X", 100);
+    config.setMaximumCapacityByLabel(CapacitySchedulerConfiguration.ROOT, "X",
+        100);
+    // set for default queue
+    config.setCapacityByLabel(defaultQueue, "X", 100);
+    config.setMaximumCapacityByLabel(defaultQueue, "X", 100);
+  }
+
+  @Override
+  @Before
+  public void setUp() throws Exception {
+    super.setUp();
+    GuiceServletConfig
+        .setInjector(Guice.createInjector(new WebServletModule()));
+  }
+
+  @Test
+  public void testAppsFinished() throws JSONException, Exception {
+    rm.start();
+    MockNM amNodeManager = rm.registerNode("127.0.0.1:1234", 2048);
+    amNodeManager.nodeHeartbeat(true);
+    RMApp killedApp = rm.submitApp(AM_CONTAINER_MB);
+    rm.killApp(killedApp.getApplicationId());
+    WebResource r = resource();
+    ClientResponse response =
+        r.path("ws").path("v1").path("cluster").path("apps")
+            .accept(MediaType.APPLICATION_JSON).get(ClientResponse.class);
+    JSONObject json = response.getEntity(JSONObject.class);
+    JSONObject apps = json.getJSONObject("apps");
+    assertEquals("incorrect number of elements", 1, apps.length());
+    JSONObject jsonObject =
+        apps.getJSONArray("app").getJSONObject(0).getJSONObject("resourceInfo");
+    Iterator<?> keys = jsonObject.keys();
+    assertEquals("For finshed app no values expected", false, keys.hasNext());
+    rm.stop();
+  }
+
+  @Test
+  public void testAppsRunning() throws JSONException, Exception {
+    rm.start();
+    MockNM nm1 = rm.registerNode("h1:1234", 2048);
+    MockNM nm2 = rm.registerNode("h2:1235", 2048);
+
+    nodeLabelManager.addLabelsToNode(
+        ImmutableMap.of(NodeId.newInstance("h2", 1235), toSet("X")));
+
+    RMApp app1 = rm.submitApp(AM_CONTAINER_MB, "app", "user", null, "default");
+    MockAM am1 = MockRM.launchAndRegisterAM(app1, rm, nm1);
+    nm1.nodeHeartbeat(true);
+
+    // AM request for resource in partition X
+    am1.allocate("*", 1024, 1, new ArrayList<ContainerId>(), "X");
+    nm2.nodeHeartbeat(true);
+
+    WebResource r = resource();
+
+    ClientResponse response =
+        r.path("ws").path("v1").path("cluster").path("apps")
+            .accept(MediaType.APPLICATION_JSON).get(ClientResponse.class);
+    JSONObject json = response.getEntity(JSONObject.class);
+
+    // Verify apps resource
+    JSONObject apps = json.getJSONObject("apps");
+    assertEquals("incorrect number of elements", 1, apps.length());
+    JSONObject jsonObject =
+        apps.getJSONArray("app").getJSONObject(0).getJSONObject("resourceInfo");
+    JSONArray jsonArray = jsonObject.getJSONArray("resourceUsagesByPartition");
+    assertEquals("Partition expected is 2", 2, jsonArray.length());
+
+    // Default partition resource
+    JSONObject defaultPartition = jsonArray.getJSONObject(0);
+    verifyResource(defaultPartition, "", getResource(1024, 1),
+        getResource(1024, 1), getResource(0, 0));
+    // verify resource used for parition x
+    JSONObject paritionX = jsonArray.getJSONObject(1);
+    verifyResource(paritionX, "X", getResource(0, 0), getResource(1024, 1),
+        getResource(0, 0));
+    rm.stop();
+  }
+
+  private String getResource(int memory, int vcore) {
+    return "{\"memory\":" + memory + ",\"vCores\":" + vcore + "}";
+  }
+
+  private void verifyResource(JSONObject partition, String partitionName,
+      String amused, String used, String reserved) throws JSONException {
+    assertEquals("Partition expected", partitionName,
+        partition.get("partitionName"));
+    assertEquals("partition amused", amused,
+        partition.get("amUsed").toString());
+    assertEquals("partition used", used, partition.get("used").toString());
+    assertEquals("partition reserved", reserved,
+        partition.get("reserved").toString());
+  }
+
+  @SuppressWarnings("unchecked")
+  private <E> Set<E> toSet(E... elements) {
+    Set<E> set = Sets.newHashSet(elements);
+    return set;
+  }
+}