YARN-1098. Separate out RM services into Always On and Active (Karthik Kambatla via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1521560 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -27,6 +27,8 @@ Release 2.3.0 - UNRELEASED
   IMPROVEMENTS
 
     YARN-905. Add state filters to nodes CLI (Wei Yan via Sandy Ryza)
+    YARN-1098. Separate out RM services into Always On and Active (Karthik
+    Kambatla via bikas)
 
   OPTIMIZATIONS
 

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

@@ -107,6 +107,15 @@ public class ResourceManager extends CompositeService implements Recoverable {
   private static final Log LOG = LogFactory.getLog(ResourceManager.class);
   public static final long clusterTimeStamp = System.currentTimeMillis();
 
+  /**
+   * "Active" services. Services that need to run only on the Active RM.
+   * These services are managed (initialized, started, stopped) by the
+   * {@link CompositeService} RMActiveServices.
+   *
+   * RM is active when (1) HA is disabled, or (2) HA is enabled and the RM is
+   * in Active state.
+   */
+  protected RMActiveServices activeServices;
   protected ClientToAMTokenSecretManagerInRM clientToAMSecretManager =
       new ClientToAMTokenSecretManagerInRM();
 
@@ -135,6 +144,8 @@ public class ResourceManager extends CompositeService implements Recoverable {
   protected ResourceTrackerService resourceTracker;
   private boolean recoveryEnabled;
 
+  /** End of Active services */
+
   private Configuration conf;
   
   public ResourceManager() {
@@ -147,137 +158,11 @@ public RMContext getRMContext() {
   
   @Override
   protected void serviceInit(Configuration conf) throws Exception {
-
     validateConfigs(conf);
-
     this.conf = conf;
 
-    this.conf.setBoolean(Dispatcher.DISPATCHER_EXIT_ON_ERROR_KEY, true);
+    activeServices = new RMActiveServices();
-
+    addService(activeServices);
-    this.rmDispatcher = createDispatcher();
-    addIfService(this.rmDispatcher);
-
-    this.amRmTokenSecretManager = createAMRMTokenSecretManager(conf);
-
-    this.containerAllocationExpirer = new ContainerAllocationExpirer(
-        this.rmDispatcher);
-    addService(this.containerAllocationExpirer);
-
-    AMLivelinessMonitor amLivelinessMonitor = createAMLivelinessMonitor();
-    addService(amLivelinessMonitor);
-
-    AMLivelinessMonitor amFinishingMonitor = createAMLivelinessMonitor();
-    addService(amFinishingMonitor);
-
-    this.containerTokenSecretManager = createContainerTokenSecretManager(conf);
-    this.nmTokenSecretManager = createNMTokenSecretManager(conf);
-    
-    boolean isRecoveryEnabled = conf.getBoolean(
-        YarnConfiguration.RECOVERY_ENABLED,
-        YarnConfiguration.DEFAULT_RM_RECOVERY_ENABLED);
-    
-    RMStateStore rmStore = null;
-    if(isRecoveryEnabled) {
-      recoveryEnabled = true;
-      rmStore =  RMStateStoreFactory.getStore(conf);
-    } else {
-      recoveryEnabled = false;
-      rmStore = new NullRMStateStore();
-    }
-
-    try {
-      rmStore.init(conf);
-      rmStore.setRMDispatcher(rmDispatcher);
-    } catch (Exception e) {
-      // the Exception from stateStore.init() needs to be handled for 
-      // HA and we need to give up master status if we got fenced
-      LOG.error("Failed to init state store", e);
-      ExitUtil.terminate(1, e);
-    }
-
-    if (UserGroupInformation.isSecurityEnabled()) {
-      this.delegationTokenRenewer = createDelegationTokenRenewer();
-    }
-
-    this.rmContext =
-        new RMContextImpl(this.rmDispatcher, rmStore,
-          this.containerAllocationExpirer, amLivelinessMonitor,
-          amFinishingMonitor, delegationTokenRenewer, this.amRmTokenSecretManager,
-          this.containerTokenSecretManager, this.nmTokenSecretManager,
-          this.clientToAMSecretManager);
-    
-    // Register event handler for NodesListManager
-    this.nodesListManager = new NodesListManager(this.rmContext);
-    this.rmDispatcher.register(NodesListManagerEventType.class, 
-        this.nodesListManager);
-    addService(nodesListManager);
-
-    // Initialize the scheduler
-    this.scheduler = createScheduler();
-    this.schedulerDispatcher = createSchedulerEventDispatcher();
-    addIfService(this.schedulerDispatcher);
-    this.rmDispatcher.register(SchedulerEventType.class,
-        this.schedulerDispatcher);
-
-    // Register event handler for RmAppEvents
-    this.rmDispatcher.register(RMAppEventType.class,
-        new ApplicationEventDispatcher(this.rmContext));
-
-    // Register event handler for RmAppAttemptEvents
-    this.rmDispatcher.register(RMAppAttemptEventType.class,
-        new ApplicationAttemptEventDispatcher(this.rmContext));
-
-    // Register event handler for RmNodes
-    this.rmDispatcher.register(RMNodeEventType.class,
-        new NodeEventDispatcher(this.rmContext));    
-
-    this.nmLivelinessMonitor = createNMLivelinessMonitor();
-    addService(this.nmLivelinessMonitor);
-
-    this.resourceTracker = createResourceTrackerService();
-    addService(resourceTracker);
-
-    DefaultMetricsSystem.initialize("ResourceManager");
-    JvmMetrics.initSingleton("ResourceManager", null);
-
-    try {
-      this.scheduler.reinitialize(conf, this.rmContext);
-    } catch (IOException ioe) {
-      throw new RuntimeException("Failed to initialize scheduler", ioe);
-    }
-
-    // creating monitors that handle preemption
-    createPolicyMonitors();
-
-    masterService = createApplicationMasterService();
-    addService(masterService) ;
-
-    this.applicationACLsManager = new ApplicationACLsManager(conf);
-
-    this.rmAppManager = createRMAppManager();
-    // Register event handler for RMAppManagerEvents
-    this.rmDispatcher.register(RMAppManagerEventType.class,
-        this.rmAppManager);
-    this.rmDTSecretManager = createRMDelegationTokenSecretManager(this.rmContext);
-    rmContext.setRMDelegationTokenSecretManager(this.rmDTSecretManager);
-    clientRM = createClientRMService();
-    rmContext.setClientRMService(clientRM);
-    addService(clientRM);
-    
-    adminService = createAdminService(clientRM, masterService, resourceTracker);
-    addService(adminService);
-
-    this.applicationMasterLauncher = createAMLauncher();
-    this.rmDispatcher.register(AMLauncherEventType.class, 
-        this.applicationMasterLauncher);
-
-    addService(applicationMasterLauncher);
-    if (UserGroupInformation.isSecurityEnabled()) {
-      addService(delegationTokenRenewer);
-      delegationTokenRenewer.setRMContext(rmContext);
-    }
-    new RMNMInfo(this.rmContext, this.scheduler);
-    
     super.serviceInit(conf);
   }
   
@@ -378,6 +263,217 @@ protected static void validateConfigs(Configuration conf) {
     }
   }
 
+  /**
+   * RMActiveServices handles all the Active services in the RM.
+   */
+  @Private
+  class RMActiveServices extends CompositeService {
+    RMActiveServices() {
+      super("RMActiveServices");
+    }
+
+    @Override
+    protected void serviceInit(Configuration configuration) throws Exception {
+      conf.setBoolean(Dispatcher.DISPATCHER_EXIT_ON_ERROR_KEY, true);
+
+      rmDispatcher = createDispatcher();
+      addIfService(rmDispatcher);
+
+      amRmTokenSecretManager = createAMRMTokenSecretManager(conf);
+
+      containerAllocationExpirer = new ContainerAllocationExpirer(rmDispatcher);
+      addService(containerAllocationExpirer);
+
+      AMLivelinessMonitor amLivelinessMonitor = createAMLivelinessMonitor();
+      addService(amLivelinessMonitor);
+
+      AMLivelinessMonitor amFinishingMonitor = createAMLivelinessMonitor();
+      addService(amFinishingMonitor);
+
+      containerTokenSecretManager = createContainerTokenSecretManager(conf);
+      nmTokenSecretManager = createNMTokenSecretManager(conf);
+
+      boolean isRecoveryEnabled = conf.getBoolean(
+          YarnConfiguration.RECOVERY_ENABLED,
+          YarnConfiguration.DEFAULT_RM_RECOVERY_ENABLED);
+
+      RMStateStore rmStore = null;
+      if(isRecoveryEnabled) {
+        recoveryEnabled = true;
+        rmStore =  RMStateStoreFactory.getStore(conf);
+      } else {
+        recoveryEnabled = false;
+        rmStore = new NullRMStateStore();
+      }
+
+      try {
+        rmStore.init(conf);
+        rmStore.setRMDispatcher(rmDispatcher);
+      } catch (Exception e) {
+        // the Exception from stateStore.init() needs to be handled for
+        // HA and we need to give up master status if we got fenced
+        LOG.error("Failed to init state store", e);
+        ExitUtil.terminate(1, e);
+      }
+
+      if (UserGroupInformation.isSecurityEnabled()) {
+        delegationTokenRenewer = createDelegationTokenRenewer();
+      }
+
+      rmContext = new RMContextImpl(
+          rmDispatcher, rmStore, containerAllocationExpirer, amLivelinessMonitor,
+          amFinishingMonitor, delegationTokenRenewer, amRmTokenSecretManager,
+          containerTokenSecretManager, nmTokenSecretManager,
+          clientToAMSecretManager);
+
+      // Register event handler for NodesListManager
+      nodesListManager = new NodesListManager(rmContext);
+      rmDispatcher.register(NodesListManagerEventType.class, nodesListManager);
+      addService(nodesListManager);
+
+      // Initialize the scheduler
+      scheduler = createScheduler();
+      schedulerDispatcher = createSchedulerEventDispatcher();
+      addIfService(schedulerDispatcher);
+      rmDispatcher.register(SchedulerEventType.class, schedulerDispatcher);
+
+      // Register event handler for RmAppEvents
+      rmDispatcher.register(RMAppEventType.class,
+          new ApplicationEventDispatcher(rmContext));
+
+      // Register event handler for RmAppAttemptEvents
+      rmDispatcher.register(RMAppAttemptEventType.class,
+          new ApplicationAttemptEventDispatcher(rmContext));
+
+      // Register event handler for RmNodes
+      rmDispatcher.register(
+          RMNodeEventType.class, new NodeEventDispatcher(rmContext));
+
+      nmLivelinessMonitor = createNMLivelinessMonitor();
+      addService(nmLivelinessMonitor);
+
+      resourceTracker = createResourceTrackerService();
+      addService(resourceTracker);
+
+      DefaultMetricsSystem.initialize("ResourceManager");
+      JvmMetrics.initSingleton("ResourceManager", null);
+
+      try {
+        scheduler.reinitialize(conf, rmContext);
+      } catch (IOException ioe) {
+        throw new RuntimeException("Failed to initialize scheduler", ioe);
+      }
+
+      // creating monitors that handle preemption
+      createPolicyMonitors();
+
+      masterService = createApplicationMasterService();
+      addService(masterService) ;
+
+      applicationACLsManager = new ApplicationACLsManager(conf);
+
+      rmAppManager = createRMAppManager();
+      // Register event handler for RMAppManagerEvents
+      rmDispatcher.register(RMAppManagerEventType.class, rmAppManager);
+      rmDTSecretManager = createRMDelegationTokenSecretManager(rmContext);
+      rmContext.setRMDelegationTokenSecretManager(rmDTSecretManager);
+      clientRM = createClientRMService();
+      rmContext.setClientRMService(clientRM);
+      addService(clientRM);
+
+      adminService = createAdminService(clientRM, masterService, resourceTracker);
+      addService(adminService);
+
+      applicationMasterLauncher = createAMLauncher();
+      rmDispatcher.register(AMLauncherEventType.class,
+          applicationMasterLauncher);
+
+      addService(applicationMasterLauncher);
+      if (UserGroupInformation.isSecurityEnabled()) {
+        addService(delegationTokenRenewer);
+        delegationTokenRenewer.setRMContext(rmContext);
+      }
+
+      new RMNMInfo(rmContext, scheduler);
+
+      super.serviceInit(conf);
+    }
+
+    @Override
+    protected void serviceStart() throws Exception {
+      amRmTokenSecretManager.start();
+      containerTokenSecretManager.start();
+      nmTokenSecretManager.start();
+
+      RMStateStore rmStore = rmContext.getStateStore();
+      // The state store needs to start irrespective of recoveryEnabled as apps
+      // need events to move to further states.
+      rmStore.start();
+
+      if(recoveryEnabled) {
+        try {
+          RMState state = rmStore.loadState();
+          recover(state);
+        } catch (Exception e) {
+          // the Exception from loadState() needs to be handled for
+          // HA and we need to give up master status if we got fenced
+          LOG.error("Failed to load/recover state", e);
+          ExitUtil.terminate(1, e);
+        }
+      }
+
+      startWepApp();
+      try {
+        rmDTSecretManager.startThreads();
+      } catch(IOException ie) {
+        throw new YarnRuntimeException("Failed to start secret manager threads", ie);
+      }
+
+      if (getConfig().getBoolean(YarnConfiguration.IS_MINI_YARN_CLUSTER, false)) {
+        String hostname = getConfig().get(YarnConfiguration.RM_WEBAPP_ADDRESS,
+            YarnConfiguration.DEFAULT_RM_WEBAPP_ADDRESS);
+        hostname = (hostname.contains(":")) ? hostname.substring(0, hostname.indexOf(":")) : hostname;
+        int port = webApp.port();
+        String resolvedAddress = hostname + ":" + port;
+        conf.set(YarnConfiguration.RM_WEBAPP_ADDRESS, resolvedAddress);
+      }
+
+      super.serviceStart();
+    }
+
+    @Override
+    protected void serviceStop() throws Exception {
+      if (webApp != null) {
+        webApp.stop();
+      }
+      if (rmDTSecretManager != null) {
+        rmDTSecretManager.stopThreads();
+      }
+
+      if (amRmTokenSecretManager != null) {
+        amRmTokenSecretManager.stop();
+      }
+      if (containerTokenSecretManager != null) {
+        containerTokenSecretManager.stop();
+      }
+      if(nmTokenSecretManager != null) {
+        nmTokenSecretManager.stop();
+      }
+
+      DefaultMetricsSystem.shutdown();
+
+      if (rmContext != null) {
+        RMStateStore store = rmContext.getStateStore();
+        try {
+          store.close();
+        } catch (Exception e) {
+          LOG.error("Error closing store.", e);
+        }
+      }
+      super.serviceStop();
+    }
+  }
+
   @Private
   public static class SchedulerEventDispatcher extends AbstractService
       implements EventHandler<SchedulerEvent> {
@@ -620,54 +716,7 @@ protected void serviceStart() throws Exception {
       throw new YarnRuntimeException("Failed to login", ie);
     }
 
-    this.amRmTokenSecretManager.start();
-    this.containerTokenSecretManager.start();
-    this.nmTokenSecretManager.start();
-
-    RMStateStore rmStore = rmContext.getStateStore();
-    // The state store needs to start irrespective of recoveryEnabled as apps
-    // need events to move to further states.
-    rmStore.start();
-
-    if(recoveryEnabled) {
-      try {
-        RMState state = rmStore.loadState();
-        recover(state);
-      } catch (Exception e) {
-        // the Exception from loadState() needs to be handled for 
-        // HA and we need to give up master status if we got fenced
-        LOG.error("Failed to load/recover state", e);
-        ExitUtil.terminate(1, e);
-      }
-    }
-
-    startWepApp();
-    try {
-      rmDTSecretManager.startThreads();
-    } catch(IOException ie) {
-      throw new YarnRuntimeException("Failed to start secret manager threads", ie);
-    }
-
-    if (getConfig().getBoolean(YarnConfiguration.IS_MINI_YARN_CLUSTER, false)) {
-      String hostname = getConfig().get(YarnConfiguration.RM_WEBAPP_ADDRESS,
-                                        YarnConfiguration.DEFAULT_RM_WEBAPP_ADDRESS);
-      hostname = (hostname.contains(":")) ? hostname.substring(0, hostname.indexOf(":")) : hostname;
-      int port = webApp.port();
-      String resolvedAddress = hostname + ":" + port;
-      conf.set(YarnConfiguration.RM_WEBAPP_ADDRESS, resolvedAddress);
-    }
-    
     super.serviceStart();
-
-    /*synchronized(shutdown) {
-      try {
-        while(!shutdown.get()) {
-          shutdown.wait();
-        }
-      } catch(InterruptedException ie) {
-        LOG.info("Interrupted while waiting", ie);
-      }
-    }*/
   }
   
   protected void doSecureLogin() throws IOException {
@@ -677,39 +726,6 @@ protected void doSecureLogin() throws IOException {
 
   @Override
   protected void serviceStop() throws Exception {
-    if (webApp != null) {
-      webApp.stop();
-    }
-    if (rmDTSecretManager != null) {
-      rmDTSecretManager.stopThreads();
-    }
-
-    if (amRmTokenSecretManager != null) {
-      this.amRmTokenSecretManager.stop();
-    }
-    if (containerTokenSecretManager != null) {
-      this.containerTokenSecretManager.stop();
-    }
-    if(nmTokenSecretManager != null) {
-      nmTokenSecretManager.stop();
-    }
-
-    /*synchronized(shutdown) {
-      shutdown.set(true);
-      shutdown.notifyAll();
-    }*/
-
-    DefaultMetricsSystem.shutdown();
-
-    if (rmContext != null) {
-      RMStateStore store = rmContext.getStateStore();
-      try {
-        store.close();
-      } catch (Exception e) {
-        LOG.error("Error closing store.", e);
-      }
-    }
-
     super.serviceStop();
   }