YARN-2705. Fixed bugs in ResourceManager node-label manager that were causing test-failures: added a dummy in-memory labels-manager. Contributed by Wangda Tan.

hadoop-yarn-project/CHANGES.txt

@@ -600,6 +600,10 @@ Release 2.6.0 - UNRELEASED
     YARN-2699. Fixed a bug in CommonNodeLabelsManager that caused tests to fail
     when using ephemeral ports on NodeIDs. (Wangda Tan via vinodkv)
 
+    YARN-2705. Fixed bugs in ResourceManager node-label manager that were causing
+    test-failures: added a dummy in-memory labels-manager. (Wangda Tan via
+    vinodkv)
+
   BREAKDOWN OF YARN-1051 SUBTASKS AND RELATED JIRAS
 
     YARN-1707. Introduce APIs to add/remove/resize queues in the

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java

@@ -1457,10 +1457,16 @@ public class YarnConfiguration extends Configuration {
   
   public static final String NODE_LABELS_PREFIX = YARN_PREFIX + "node-labels.";
 
+  /**
+   * Class for RMNodeLabelsManager Please note this value should be consistent
+   * in client nodes and RM node(s)
+   */
+  public static final String RM_NODE_LABELS_MANAGER_CLASS = NODE_LABELS_PREFIX
+      + "manager-class";
+  
   /** URI for NodeLabelManager */
-  public static final String FS_NODE_LABELS_STORE_URI = NODE_LABELS_PREFIX
-      + "fs-store.uri";
-  public static final String DEFAULT_FS_NODE_LABELS_STORE_URI = "file:///tmp/";
+  public static final String FS_NODE_LABELS_STORE_ROOT_DIR = NODE_LABELS_PREFIX
+      + "fs-store.root-dir";
   public static final String FS_NODE_LABELS_STORE_RETRY_POLICY_SPEC =
       NODE_LABELS_PREFIX + "fs-store.retry-policy-spec";
   public static final String DEFAULT_FS_NODE_LABELS_STORE_RETRY_POLICY_SPEC =

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/CommonNodeLabelsManager.java

@@ -220,9 +220,11 @@ public class CommonNodeLabelsManager extends AbstractService {
     // service init, we don't want to trigger any event handling at that time.
     initDispatcher(getConfig());
 
-    dispatcher.register(NodeLabelsStoreEventType.class,
-        new ForwardingEventHandler());
-
+    if (null != dispatcher) {
+      dispatcher.register(NodeLabelsStoreEventType.class,
+          new ForwardingEventHandler());
+    }
+    
     startDispatcher();
   }
   

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/FileSystemNodeLabelsStore.java

@@ -32,6 +32,7 @@ import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.LocalFileSystem;
 import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.yarn.api.records.NodeId;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.AddToClusterNodeLabelsRequestProto;
@@ -54,7 +55,7 @@ public class FileSystemNodeLabelsStore extends NodeLabelsStore {
 
   protected static final Log LOG = LogFactory.getLog(FileSystemNodeLabelsStore.class);
 
-  protected static final String ROOT_DIR_NAME = "FSNodeLabelManagerRoot";
+  protected static final String DEFAULT_DIR_NAME = "node-labels";
   protected static final String MIRROR_FILENAME = "nodelabel.mirror";
   protected static final String EDITLOG_FILENAME = "nodelabel.editlog";
   
@@ -63,22 +64,27 @@ public class FileSystemNodeLabelsStore extends NodeLabelsStore {
   }
 
   Path fsWorkingPath;
-  Path rootDirPath;
   FileSystem fs;
   FSDataOutputStream editlogOs;
   Path editLogPath;
+  
+  private String getDefaultFSNodeLabelsRootDir() throws IOException {
+    // default is in local: /tmp/hadoop-yarn-${user}/node-labels/
+    return "file:///tmp/hadoop-yarn-"
+        + UserGroupInformation.getCurrentUser().getShortUserName() + "/"
+        + DEFAULT_DIR_NAME;
+  }
 
   @Override
   public void init(Configuration conf) throws Exception {
     fsWorkingPath =
-        new Path(conf.get(YarnConfiguration.FS_NODE_LABELS_STORE_URI,
-            YarnConfiguration.DEFAULT_FS_NODE_LABELS_STORE_URI));
-    rootDirPath = new Path(fsWorkingPath, ROOT_DIR_NAME);
+        new Path(conf.get(YarnConfiguration.FS_NODE_LABELS_STORE_ROOT_DIR,
+            getDefaultFSNodeLabelsRootDir()));
 
     setFileSystem(conf);
 
     // mkdir of root dir path
-    fs.mkdirs(rootDirPath);
+    fs.mkdirs(fsWorkingPath);
   }
 
   @Override
@@ -159,8 +165,8 @@ public class FileSystemNodeLabelsStore extends NodeLabelsStore {
      */
     
     // Open mirror from serialized file
-    Path mirrorPath = new Path(rootDirPath, MIRROR_FILENAME);
-    Path oldMirrorPath = new Path(rootDirPath, MIRROR_FILENAME + ".old");
+    Path mirrorPath = new Path(fsWorkingPath, MIRROR_FILENAME);
+    Path oldMirrorPath = new Path(fsWorkingPath, MIRROR_FILENAME + ".old");
 
     FSDataInputStream is = null;
     if (fs.exists(mirrorPath)) {
@@ -183,7 +189,7 @@ public class FileSystemNodeLabelsStore extends NodeLabelsStore {
     }
 
     // Open and process editlog
-    editLogPath = new Path(rootDirPath, EDITLOG_FILENAME);
+    editLogPath = new Path(fsWorkingPath, EDITLOG_FILENAME);
     if (fs.exists(editLogPath)) {
       is = fs.open(editLogPath);
 
@@ -224,7 +230,7 @@ public class FileSystemNodeLabelsStore extends NodeLabelsStore {
     }
 
     // Serialize current mirror to mirror.writing
-    Path writingMirrorPath = new Path(rootDirPath, MIRROR_FILENAME + ".writing");
+    Path writingMirrorPath = new Path(fsWorkingPath, MIRROR_FILENAME + ".writing");
     FSDataOutputStream os = fs.create(writingMirrorPath, true);
     ((AddToClusterNodeLabelsRequestPBImpl) AddToClusterNodeLabelsRequestPBImpl
         .newInstance(mgr.getClusterNodeLabels())).getProto().writeDelimitedTo(os);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestFileSystemNodeLabelsStore.java

@@ -67,7 +67,7 @@ public class TestFileSystemNodeLabelsStore extends NodeLabelTestBase {
     tempDir.delete();
     tempDir.mkdirs();
     tempDir.deleteOnExit();
-    conf.set(YarnConfiguration.FS_NODE_LABELS_STORE_URI,
+    conf.set(YarnConfiguration.FS_NODE_LABELS_STORE_ROOT_DIR,
         tempDir.getAbsolutePath());
     mgr.init(conf);
     mgr.start();
@@ -75,7 +75,7 @@ public class TestFileSystemNodeLabelsStore extends NodeLabelTestBase {
 
   @After
   public void after() throws IOException {
-    getStore().fs.delete(getStore().rootDirPath, true);
+    getStore().fs.delete(getStore().fsWorkingPath, true);
     mgr.stop();
   }
 

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

@@ -67,6 +67,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.amlauncher.ApplicationMaste
 import org.apache.hadoop.yarn.server.resourcemanager.metrics.SystemMetricsPublisher;
 import org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingEditPolicy;
 import org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.MemoryRMNodeLabelsManager;
 import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
 import org.apache.hadoop.yarn.server.resourcemanager.recovery.NullRMStateStore;
 import org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore;
@@ -321,8 +322,12 @@ public class ResourceManager extends CompositeService implements Recoverable {
     return new AMLivelinessMonitor(this.rmDispatcher);
   }
   
-  protected RMNodeLabelsManager createNodeLabelManager() {
-    return new RMNodeLabelsManager();
+  protected RMNodeLabelsManager createNodeLabelManager()
+      throws InstantiationException, IllegalAccessException {
+    Class<? extends RMNodeLabelsManager> nlmCls =
+        conf.getClass(YarnConfiguration.RM_NODE_LABELS_MANAGER_CLASS,
+            MemoryRMNodeLabelsManager.class, RMNodeLabelsManager.class);
+    return nlmCls.newInstance();
   }
   
   protected DelegationTokenRenewer createDelegationTokenRenewer() {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/nodelabels/DummyRMNodeLabelsManager.java → hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/nodelabels/MemoryRMNodeLabelsManager.java

@@ -25,10 +25,9 @@ import java.util.Set;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.api.records.NodeId;
-import org.apache.hadoop.yarn.event.InlineDispatcher;
 import org.apache.hadoop.yarn.nodelabels.NodeLabelsStore;
 
-public class DummyRMNodeLabelsManager extends RMNodeLabelsManager {
+public class MemoryRMNodeLabelsManager extends RMNodeLabelsManager {
   Map<NodeId, Set<String>> lastNodeToLabels = null;
   Collection<String> lastAddedlabels = null;
   Collection<String> lastRemovedlabels = null;
@@ -68,7 +67,7 @@ public class DummyRMNodeLabelsManager extends RMNodeLabelsManager {
 
   @Override
   protected void initDispatcher(Configuration conf) {
-    super.dispatcher = new InlineDispatcher();
+    super.dispatcher = null;
   }
 
   @Override

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

@@ -59,7 +59,7 @@ import org.apache.hadoop.yarn.security.AMRMTokenIdentifier;
 import org.apache.hadoop.yarn.server.api.protocolrecords.NMContainerStatus;
 import org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncherEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.amlauncher.ApplicationMasterLauncher;
-import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.DummyRMNodeLabelsManager;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.MemoryRMNodeLabelsManager;
 import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
 import org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
@@ -115,7 +115,7 @@ public class MockRM extends ResourceManager {
   
   @Override
   protected RMNodeLabelsManager createNodeLabelManager() {
-    RMNodeLabelsManager mgr = new DummyRMNodeLabelsManager();
+    RMNodeLabelsManager mgr = new MemoryRMNodeLabelsManager();
     mgr.init(getConfig());
     return mgr;
   }

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

@@ -42,11 +42,11 @@ public class TestRMNodeLabelsManager extends NodeLabelTestBase {
   private final Resource SMALL_RESOURCE = Resource.newInstance(100, 0);
   private final Resource LARGE_NODE = Resource.newInstance(1000, 0);
   
-  DummyRMNodeLabelsManager mgr = null;
+  MemoryRMNodeLabelsManager mgr = null;
 
   @Before
   public void before() {
-    mgr = new DummyRMNodeLabelsManager();
+    mgr = new MemoryRMNodeLabelsManager();
     mgr.init(new Configuration());
     mgr.start();
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java

@@ -84,7 +84,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.Task;
 import org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.MockRMWithAMS;
 import org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.MyContainerManager;
-import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.DummyRMNodeLabelsManager;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.MemoryRMNodeLabelsManager;
 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.rmapp.RMAppMetrics;
@@ -154,7 +154,7 @@ public class TestCapacityScheduler {
     resourceManager = new ResourceManager() {
       @Override
       protected RMNodeLabelsManager createNodeLabelManager() {
-        RMNodeLabelsManager mgr = new DummyRMNodeLabelsManager();
+        RMNodeLabelsManager mgr = new MemoryRMNodeLabelsManager();
         mgr.init(getConfig());
         return mgr;
       }
@@ -1485,7 +1485,7 @@ public class TestCapacityScheduler {
     resourceManager = new ResourceManager() {
        @Override
         protected RMNodeLabelsManager createNodeLabelManager() {
-          RMNodeLabelsManager mgr = new DummyRMNodeLabelsManager();
+          RMNodeLabelsManager mgr = new MemoryRMNodeLabelsManager();
           mgr.init(getConfig());
           return mgr;
         }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestContainerAllocation.java

@@ -45,7 +45,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.RMContextImpl;
 import org.apache.hadoop.yarn.server.resourcemanager.RMSecretManagerService;
 import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.TestFifoScheduler;
-import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.DummyRMNodeLabelsManager;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.MemoryRMNodeLabelsManager;
 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.rmapp.attempt.RMAppAttempt;
@@ -81,7 +81,7 @@ public class TestContainerAllocation {
     conf = new YarnConfiguration();
     conf.setClass(YarnConfiguration.RM_SCHEDULER, CapacityScheduler.class,
       ResourceScheduler.class);
-    mgr = new DummyRMNodeLabelsManager();
+    mgr = new MemoryRMNodeLabelsManager();
     mgr.init(conf);
   }
 
@@ -446,7 +446,7 @@ public class TestContainerAllocation {
   
   @Test(timeout = 300000)
   public void testContainerAllocationWithSingleUserLimits() throws Exception {
-    final RMNodeLabelsManager mgr = new DummyRMNodeLabelsManager();
+    final RMNodeLabelsManager mgr = new MemoryRMNodeLabelsManager();
     mgr.init(conf);
 
     // set node -> label

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

@@ -39,7 +39,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
 import org.apache.hadoop.yarn.server.resourcemanager.RMContextImpl;
 import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.applicationsmanager.MockAsm;
-import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.DummyRMNodeLabelsManager;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.MemoryRMNodeLabelsManager;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
 import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
@@ -179,7 +179,7 @@ public class TestRMWebApp {
          return nodesMap;
        }
      }; 
-    rmContext.setNodeLabelManager(new DummyRMNodeLabelsManager());
+    rmContext.setNodeLabelManager(new MemoryRMNodeLabelsManager());
     return rmContext;
   }
 
@@ -211,7 +211,7 @@ public class TestRMWebApp {
         null, new RMContainerTokenSecretManager(conf),
         new NMTokenSecretManagerInRM(conf),
         new ClientToAMTokenSecretManagerInRM(), null);
-    rmContext.setNodeLabelManager(new DummyRMNodeLabelsManager());
+    rmContext.setNodeLabelManager(new MemoryRMNodeLabelsManager());
     cs.setRMContext(rmContext);
     cs.init(conf);
     return cs;