YARN-11048. Add tests that shows how to delete config values with Mutation API (#3799). Contributed by Szilard Nemeth

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/ParentQueue.java

@@ -344,7 +344,7 @@ public class ParentQueue extends AbstractCSQueue {
             if (Math.abs(childrenPctSum) > PRECISION) {
               // It is wrong when percent sum != {0, 1}
               throw new IOException(
-                  "Illegal" + " capacity sum of " + childrenPctSum
+                  "Illegal capacity sum of " + childrenPctSum
                       + " for children of queue " + getQueueName() + " for label="
                       + nodeLabel + ". It should be either 0 or 1.0");
             } else{
@@ -357,7 +357,7 @@ public class ParentQueue extends AbstractCSQueue {
                 if ((Math.abs(queueCapacities.getCapacity(nodeLabel))
                     > PRECISION) && (!allowZeroCapacitySum)) {
                   throw new IOException(
-                      "Illegal" + " capacity sum of " + childrenPctSum
+                      "Illegal capacity sum of " + childrenPctSum
                           + " for children of queue " + getQueueName()
                           + " for label=" + nodeLabel
                           + ". It is set to 0, but parent percent != 0, and "
@@ -372,7 +372,7 @@ public class ParentQueue extends AbstractCSQueue {
                 queueCapacities.getCapacity(nodeLabel)) <= 0f
                 && !allowZeroCapacitySum) {
               throw new IOException(
-                  "Illegal" + " capacity sum of " + childrenPctSum
+                  "Illegal capacity sum of " + childrenPctSum
                       + " for children of queue " + getQueueName() + " for label="
                       + nodeLabel + ". queue=" + getQueueName()
                       + " has zero capacity, but child"

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/QueuePath.java

@@ -61,12 +61,13 @@ public class QueuePath implements Iterable<String> {
   }
 
   /**
-   * Concatenate queue path parts into one queue path string.
-   * @param parts Parts of the full queue pathAutoCreatedQueueTemplate
-   * @return full path of the given queue parts
+   * Constructor to create Queue path from queue names.
+   * The provided queue names will be concatenated by dots, giving a full queue path.
+   * @param parts Parts of queue path
+   * @return QueuePath object
    */
-  public static String concatenatePath(String... parts) {
-    return String.join(DOT, parts);
+  public static QueuePath createFromQueues(String... parts) {
+    return new QueuePath(String.join(DOT, parts));
   }
 
   /**

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

@@ -2656,8 +2656,7 @@ public class RMWebServices extends WebServices implements RMWebServiceProtocol {
     initForWritableEndpoints(callerUGI, true);
 
     ResourceScheduler scheduler = rm.getResourceScheduler();
-    if (scheduler instanceof MutableConfScheduler
-        && ((MutableConfScheduler) scheduler).isConfigurationMutable()) {
+    if (isConfigurationMutable(scheduler)) {
       try {
         MutableConfigurationProvider mutableConfigurationProvider =
             ((MutableConfScheduler) scheduler).getMutableConfProvider();
@@ -2696,8 +2695,7 @@ public class RMWebServices extends WebServices implements RMWebServiceProtocol {
     UserGroupInformation callerUGI = getCallerUserGroupInformation(hsr, true);
     initForWritableEndpoints(callerUGI, true);
     ResourceScheduler scheduler = rm.getResourceScheduler();
-    if (scheduler instanceof MutableConfScheduler && ((MutableConfScheduler)
-            scheduler).isConfigurationMutable()) {
+    if (isConfigurationMutable(scheduler)) {
       try {
         MutableConfigurationProvider mutableConfigurationProvider =
                 ((MutableConfScheduler) scheduler).getMutableConfProvider();
@@ -2746,51 +2744,61 @@ public class RMWebServices extends WebServices implements RMWebServiceProtocol {
   public synchronized Response updateSchedulerConfiguration(SchedConfUpdateInfo
       mutationInfo, @Context HttpServletRequest hsr)
       throws AuthorizationException, InterruptedException {
-
     UserGroupInformation callerUGI = getCallerUserGroupInformation(hsr, true);
     initForWritableEndpoints(callerUGI, true);
 
     ResourceScheduler scheduler = rm.getResourceScheduler();
-    if (scheduler instanceof MutableConfScheduler && ((MutableConfScheduler)
-        scheduler).isConfigurationMutable()) {
+    if (isConfigurationMutable(scheduler)) {
       try {
-        callerUGI.doAs(new PrivilegedExceptionAction<Void>() {
-          @Override
-          public Void run() throws Exception {
-            MutableConfigurationProvider provider = ((MutableConfScheduler)
-                scheduler).getMutableConfProvider();
-            if (!provider.getAclMutationPolicy().isMutationAllowed(callerUGI,
-                mutationInfo)) {
-              throw new org.apache.hadoop.security.AccessControlException("User"
-                  + " is not admin of all modified queues.");
-            }
-            LogMutation logMutation = provider.logAndApplyMutation(callerUGI,
-                mutationInfo);
-            try {
-              rm.getRMContext().getRMAdminService().refreshQueues();
-            } catch (IOException | YarnException e) {
-              provider.confirmPendingMutation(logMutation, false);
-              throw e;
-            }
-            provider.confirmPendingMutation(logMutation, true);
-            return null;
-          }
+        callerUGI.doAs((PrivilegedExceptionAction<Void>) () -> {
+          MutableConfigurationProvider provider = ((MutableConfScheduler)
+              scheduler).getMutableConfProvider();
+          LogMutation logMutation = applyMutation(provider, callerUGI, mutationInfo);
+          return refreshQueues(provider, logMutation);
         });
       } catch (IOException e) {
         LOG.error("Exception thrown when modifying configuration.", e);
         return Response.status(Status.BAD_REQUEST).entity(e.getMessage())
             .build();
       }
-      return Response.status(Status.OK).entity("Configuration change " +
-          "successfully applied.").build();
+      return Response.status(Status.OK).entity("Configuration change successfully applied.")
+          .build();
     } else {
       return Response.status(Status.BAD_REQUEST)
-          .entity("Configuration change only supported by " +
-              "MutableConfScheduler.")
+          .entity(String.format("Configuration change only supported by " +
+              "%s.", MutableConfScheduler.class.getSimpleName()))
           .build();
     }
   }
 
+  private Void refreshQueues(MutableConfigurationProvider provider, LogMutation logMutation)
+      throws Exception {
+    try {
+      rm.getRMContext().getRMAdminService().refreshQueues();
+    } catch (IOException | YarnException e) {
+      provider.confirmPendingMutation(logMutation, false);
+      throw e;
+    }
+    provider.confirmPendingMutation(logMutation, true);
+    return null;
+  }
+
+  private LogMutation applyMutation(MutableConfigurationProvider provider,
+      UserGroupInformation callerUGI, SchedConfUpdateInfo mutationInfo) throws Exception {
+    if (!provider.getAclMutationPolicy().isMutationAllowed(callerUGI,
+        mutationInfo)) {
+      throw new org.apache.hadoop.security.AccessControlException("User"
+          + " is not admin of all modified queues.");
+    }
+    return provider.logAndApplyMutation(callerUGI,
+        mutationInfo);
+  }
+
+  private boolean isConfigurationMutable(ResourceScheduler scheduler) {
+    return scheduler instanceof MutableConfScheduler && ((MutableConfScheduler)
+        scheduler).isConfigurationMutable();
+  }
+
   @GET
   @Path(RMWSConsts.SCHEDULER_CONF)
   @Produces({ MediaType.APPLICATION_JSON + "; " + JettyUtils.UTF_8,
@@ -2803,8 +2811,7 @@ public class RMWebServices extends WebServices implements RMWebServiceProtocol {
     initForWritableEndpoints(callerUGI, true);
 
     ResourceScheduler scheduler = rm.getResourceScheduler();
-    if (scheduler instanceof MutableConfScheduler
-        && ((MutableConfScheduler) scheduler).isConfigurationMutable()) {
+    if (isConfigurationMutable(scheduler)) {
       MutableConfigurationProvider mutableConfigurationProvider =
           ((MutableConfScheduler) scheduler).getMutableConfProvider();
       // We load the cached configuration from configuration store,
@@ -2835,8 +2842,7 @@ public class RMWebServices extends WebServices implements RMWebServiceProtocol {
     initForWritableEndpoints(callerUGI, true);
 
     ResourceScheduler scheduler = rm.getResourceScheduler();
-    if (scheduler instanceof MutableConfScheduler
-        && ((MutableConfScheduler) scheduler).isConfigurationMutable()) {
+    if (isConfigurationMutable(scheduler)) {
       MutableConfigurationProvider mutableConfigurationProvider =
           ((MutableConfScheduler) scheduler).getMutableConfProvider();
 

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

@@ -1098,4 +1098,4 @@ public class TestRMWebServices extends JerseyTestBase {
     return  webService;
   }
 
-}
+}

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

@@ -22,10 +22,13 @@ 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.core.util.MultivaluedMapImpl;
 import com.sun.jersey.guice.spi.container.servlet.GuiceContainer;
 import com.sun.jersey.test.framework.WebAppDescriptor;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.http.JettyUtils;
 import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.util.Sets;
 import org.apache.hadoop.yarn.api.records.QueueState;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
@@ -34,12 +37,13 @@ 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.server.resourcemanager.scheduler.capacity.QueuePath;
+import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.NodeLabelInfo;
+import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.NodeLabelsInfo;
 import org.apache.hadoop.yarn.webapp.GenericExceptionHandler;
 import org.apache.hadoop.yarn.webapp.GuiceServletConfig;
 import org.apache.hadoop.yarn.webapp.JerseyTestBase;
 import org.apache.hadoop.yarn.webapp.dao.QueueConfigInfo;
 import org.apache.hadoop.yarn.webapp.dao.SchedConfUpdateInfo;
-import org.apache.hadoop.yarn.webapp.util.YarnWebServiceUtils;
 import org.codehaus.jettison.json.JSONArray;
 import org.codehaus.jettison.json.JSONException;
 import org.codehaus.jettison.json.JSONObject;
@@ -58,10 +62,15 @@ import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
+import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.ACCESSIBLE_NODE_LABELS;
+import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.CAPACITY;
+import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.MAXIMUM_CAPACITY;
+import static org.apache.hadoop.yarn.webapp.util.YarnWebServiceUtils.toJson;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertNotNull;
 import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.ORDERING_POLICY;
+import static org.junit.Assert.assertTrue;
 
 /**
  * Test scheduler configuration mutation via REST API.
@@ -74,7 +83,11 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
       "test-classes"), YarnConfiguration.CS_CONFIGURATION_FILE);
   private static final File OLD_CONF_FILE = new File(new File("target",
       "test-classes"), YarnConfiguration.CS_CONFIGURATION_FILE + ".tmp");
-
+  private static final String LABEL_1 = "label1";
+  public static final QueuePath ROOT = new QueuePath("root");
+  public static final QueuePath ROOT_A = new QueuePath("root", "a");
+  public static final QueuePath ROOT_A_A1 = QueuePath.createFromQueues("root", "a", "a1");
+  public static final QueuePath ROOT_A_A2 = QueuePath.createFromQueues("root", "a", "a2");
   private static MockRM rm;
   private static String userName;
   private static CapacitySchedulerConfiguration csConf;
@@ -216,7 +229,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
     ClientResponse response = r.path("ws").path("v1").path("cluster")
         .path("scheduler-conf").queryParam("user.name", userName)
         .accept(MediaType.APPLICATION_JSON)
-        .entity(YarnWebServiceUtils.toJson(updateInfo,
+        .entity(toJson(updateInfo,
         SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
         .put(ClientResponse.class);
     newConf = getSchedulerConf();
@@ -284,7 +297,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
 
@@ -323,7 +336,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
 
@@ -350,7 +363,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
     response = r.path("ws").path("v1").path("cluster")
         .path("scheduler-conf").queryParam("user.name", userName)
         .accept(MediaType.APPLICATION_JSON)
-        .entity(YarnWebServiceUtils.toJson(updateInfo1,
+        .entity(toJson(updateInfo1,
         SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
         .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -371,7 +384,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
     response = r.path("ws").path("v1").path("cluster")
         .path("scheduler-conf").queryParam("user.name", userName)
         .accept(MediaType.APPLICATION_JSON)
-        .entity(YarnWebServiceUtils.toJson(updateInfo2,
+        .entity(toJson(updateInfo2,
         SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
         .put(ClientResponse.class);
 
@@ -401,7 +414,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
     response = r.path("ws").path("v1").path("cluster")
         .path("scheduler-conf").queryParam("user.name", userName)
         .accept(MediaType.APPLICATION_JSON)
-        .entity(YarnWebServiceUtils.toJson(updateInfo1,
+        .entity(toJson(updateInfo1,
         SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
         .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -419,7 +432,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
     response = r.path("ws").path("v1").path("cluster")
         .path("scheduler-conf").queryParam("user.name", userName)
         .accept(MediaType.APPLICATION_JSON)
-        .entity(YarnWebServiceUtils.toJson(updateInfo2,
+        .entity(toJson(updateInfo2,
         SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
         .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -448,7 +461,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
 
@@ -480,7 +493,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
     response = r.path("ws").path("v1").path("cluster")
         .path("scheduler-conf").queryParam("user.name", userName)
         .accept(MediaType.APPLICATION_JSON)
-        .entity(YarnWebServiceUtils.toJson(updateInfo,
+        .entity(toJson(updateInfo,
         SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
         .put(ClientResponse.class);
 
@@ -513,7 +526,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
     response = r.path("ws").path("v1").path("cluster")
         .path("scheduler-conf").queryParam("user.name", userName)
         .accept(MediaType.APPLICATION_JSON)
-        .entity(YarnWebServiceUtils.toJson(updateInfo,
+        .entity(toJson(updateInfo,
             SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
         .put(ClientResponse.class);
 
@@ -538,7 +551,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
 
@@ -569,7 +582,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
 
@@ -601,7 +614,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
 
@@ -629,7 +642,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -664,7 +677,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
     LOG.debug("Response headers: " + response.getHeaders());
@@ -683,7 +696,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -713,7 +726,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -738,7 +751,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -753,7 +766,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         r.path("ws").path("v1").path("cluster")
             .path("scheduler-conf").queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .put(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());
@@ -764,6 +777,220 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
         newCSConf.getMaximumSystemApplications());
   }
 
+  @Test
+  public void testNodeLabelRemovalResidualConfigsAreCleared() throws Exception {
+    WebResource r = resource();
+    ClientResponse response;
+
+    // 1. Create Node Label: label1
+    NodeLabelsInfo nodeLabelsInfo = new NodeLabelsInfo();
+    nodeLabelsInfo.getNodeLabelsInfo().add(new NodeLabelInfo(LABEL_1));
+    WebResource addNodeLabelsResource = r.path("ws").path("v1").path("cluster")
+        .path("add-node-labels");
+    WebResource getNodeLabelsResource = r.path("ws").path("v1").path("cluster")
+        .path("get-node-labels");
+    WebResource removeNodeLabelsResource = r.path("ws").path("v1").path("cluster")
+        .path("remove-node-labels");
+    WebResource schedulerConfResource = r.path("ws").path("v1").path("cluster")
+        .path(RMWSConsts.SCHEDULER_CONF);
+    response =
+        addNodeLabelsResource.queryParam("user.name", userName)
+            .accept(MediaType.APPLICATION_JSON)
+            .entity(logAndReturnJson(addNodeLabelsResource,
+                    toJson(nodeLabelsInfo, NodeLabelsInfo.class)),
+                MediaType.APPLICATION_JSON)
+            .post(ClientResponse.class);
+
+    // 2. Verify new Node Label
+    response =
+        getNodeLabelsResource.queryParam("user.name", userName)
+            .accept(MediaType.APPLICATION_JSON).get(ClientResponse.class);
+    assertEquals(MediaType.APPLICATION_JSON_TYPE + "; " + JettyUtils.UTF_8,
+        response.getType().toString());
+    nodeLabelsInfo = response.getEntity(NodeLabelsInfo.class);
+    assertEquals(1, nodeLabelsInfo.getNodeLabels().size());
+    for (NodeLabelInfo nl : nodeLabelsInfo.getNodeLabelsInfo()) {
+      assertEquals(LABEL_1, nl.getName());
+      assertTrue(nl.getExclusivity());
+    }
+
+    // 3. Assign 'label1' to root.a
+    SchedConfUpdateInfo updateInfo = new SchedConfUpdateInfo();
+    Map<String, String> updateForRoot = new HashMap<>();
+    updateForRoot.put(CapacitySchedulerConfiguration.ACCESSIBLE_NODE_LABELS, "*");
+    QueueConfigInfo rootUpdateInfo = new QueueConfigInfo(ROOT.getFullPath(), updateForRoot);
+
+    Map<String, String> updateForRootA = new HashMap<>();
+    updateForRootA.put(CapacitySchedulerConfiguration.ACCESSIBLE_NODE_LABELS, LABEL_1);
+    QueueConfigInfo rootAUpdateInfo = new QueueConfigInfo(ROOT_A.getFullPath(), updateForRootA);
+
+    updateInfo.getUpdateQueueInfo().add(rootUpdateInfo);
+    updateInfo.getUpdateQueueInfo().add(rootAUpdateInfo);
+
+    response =
+        schedulerConfResource
+            .queryParam("user.name", userName)
+            .accept(MediaType.APPLICATION_JSON)
+            .entity(logAndReturnJson(schedulerConfResource, toJson(updateInfo,
+                SchedConfUpdateInfo.class)), MediaType.APPLICATION_JSON)
+            .put(ClientResponse.class);
+    assertEquals(Status.OK.getStatusCode(), response.getStatus());
+
+    CapacityScheduler cs = (CapacityScheduler) rm.getResourceScheduler();
+
+    assertEquals(Sets.newHashSet("*"),
+        cs.getConfiguration().getAccessibleNodeLabels(ROOT.getFullPath()));
+    assertEquals(Sets.newHashSet(LABEL_1),
+        cs.getConfiguration().getAccessibleNodeLabels(ROOT_A.getFullPath()));
+
+    // 4. Set partition capacities to queues as below
+    updateInfo = new SchedConfUpdateInfo();
+    updateForRoot = new HashMap<>();
+    updateForRoot.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "100");
+    updateForRoot.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "100");
+    rootUpdateInfo = new QueueConfigInfo(ROOT.getFullPath(), updateForRoot);
+
+    updateForRootA = new HashMap<>();
+    updateForRootA.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "100");
+    updateForRootA.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "100");
+    rootAUpdateInfo = new QueueConfigInfo(ROOT_A.getFullPath(), updateForRootA);
+
+    // Avoid the following exception by adding some capacities to root.a.a1 and root.a.a2 to label1
+    // Illegal capacity sum of 0.0 for children of queue a for label=label1.
+    // It is set to 0, but parent percent != 0, and doesn't allow children capacity to set to 0
+    Map<String, String> updateForRootA_A1 = new HashMap<>();
+    updateForRootA_A1.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "20");
+    updateForRootA_A1.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "20");
+    QueueConfigInfo rootA_A1UpdateInfo = new QueueConfigInfo(ROOT_A_A1.getFullPath(),
+        updateForRootA_A1);
+
+    Map<String, String> updateForRootA_A2 = new HashMap<>();
+    updateForRootA_A2.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "80");
+    updateForRootA_A2.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "80");
+    QueueConfigInfo rootA_A2UpdateInfo = new QueueConfigInfo(ROOT_A_A2.getFullPath(),
+        updateForRootA_A2);
+
+
+    updateInfo.getUpdateQueueInfo().add(rootUpdateInfo);
+    updateInfo.getUpdateQueueInfo().add(rootAUpdateInfo);
+    updateInfo.getUpdateQueueInfo().add(rootA_A1UpdateInfo);
+    updateInfo.getUpdateQueueInfo().add(rootA_A2UpdateInfo);
+
+    response =
+        schedulerConfResource
+            .queryParam("user.name", userName)
+            .accept(MediaType.APPLICATION_JSON)
+            .entity(logAndReturnJson(schedulerConfResource, toJson(updateInfo,
+                SchedConfUpdateInfo.class)), MediaType.APPLICATION_JSON)
+            .put(ClientResponse.class);
+    assertEquals(Status.OK.getStatusCode(), response.getStatus());
+
+    assertEquals(100.0, cs.getConfiguration().getLabeledQueueCapacity(ROOT, LABEL_1), 0.001f);
+    assertEquals(100.0, cs.getConfiguration().getLabeledQueueMaximumCapacity(ROOT, LABEL_1),
+        0.001f);
+    assertEquals(100.0, cs.getConfiguration().getLabeledQueueCapacity(ROOT_A, LABEL_1), 0.001f);
+    assertEquals(100.0, cs.getConfiguration().getLabeledQueueMaximumCapacity(ROOT_A, LABEL_1),
+        0.001f);
+    assertEquals(20.0, cs.getConfiguration().getLabeledQueueCapacity(ROOT_A_A1, LABEL_1), 0.001f);
+    assertEquals(20.0, cs.getConfiguration().getLabeledQueueMaximumCapacity(ROOT_A_A1, LABEL_1),
+        0.001f);
+    assertEquals(80.0, cs.getConfiguration().getLabeledQueueCapacity(ROOT_A_A2, LABEL_1), 0.001f);
+    assertEquals(80.0, cs.getConfiguration().getLabeledQueueMaximumCapacity(ROOT_A_A2, LABEL_1),
+        0.001f);
+
+    //5. De-assign node label: "label1" + Remove residual properties
+    updateInfo = new SchedConfUpdateInfo();
+    updateForRoot = new HashMap<>();
+    updateForRoot.put(CapacitySchedulerConfiguration.ACCESSIBLE_NODE_LABELS, "*");
+    updateForRoot.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "");
+    updateForRoot.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "");
+    rootUpdateInfo = new QueueConfigInfo(ROOT.getFullPath(), updateForRoot);
+
+    updateForRootA = new HashMap<>();
+    updateForRootA.put(CapacitySchedulerConfiguration.ACCESSIBLE_NODE_LABELS, "");
+    updateForRootA.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "");
+    updateForRootA.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "");
+    rootAUpdateInfo = new QueueConfigInfo(ROOT_A.getFullPath(), updateForRootA);
+
+    updateForRootA_A1 = new HashMap<>();
+    updateForRootA_A1.put(CapacitySchedulerConfiguration.ACCESSIBLE_NODE_LABELS, "");
+    updateForRootA_A1.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "");
+    updateForRootA_A1.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "");
+    rootA_A1UpdateInfo = new QueueConfigInfo(ROOT_A_A1.getFullPath(), updateForRootA_A1);
+
+    updateForRootA_A2 = new HashMap<>();
+    updateForRootA_A2.put(CapacitySchedulerConfiguration.ACCESSIBLE_NODE_LABELS, "");
+    updateForRootA_A2.put(getAccessibleNodeLabelsCapacityPropertyName(LABEL_1), "");
+    updateForRootA_A2.put(getAccessibleNodeLabelsMaxCapacityPropertyName(LABEL_1), "");
+    rootA_A2UpdateInfo = new QueueConfigInfo(ROOT_A_A2.getFullPath(), updateForRootA_A2);
+
+    updateInfo.getUpdateQueueInfo().add(rootUpdateInfo);
+    updateInfo.getUpdateQueueInfo().add(rootAUpdateInfo);
+    updateInfo.getUpdateQueueInfo().add(rootA_A1UpdateInfo);
+    updateInfo.getUpdateQueueInfo().add(rootA_A2UpdateInfo);
+
+    response =
+        schedulerConfResource
+            .queryParam("user.name", userName)
+            .accept(MediaType.APPLICATION_JSON)
+            .entity(logAndReturnJson(schedulerConfResource, toJson(updateInfo,
+                SchedConfUpdateInfo.class)), MediaType.APPLICATION_JSON)
+            .put(ClientResponse.class);
+    assertEquals(Status.OK.getStatusCode(), response.getStatus());
+    assertEquals(Sets.newHashSet("*"),
+        cs.getConfiguration().getAccessibleNodeLabels(ROOT.getFullPath()));
+    assertNull(cs.getConfiguration().getAccessibleNodeLabels(ROOT_A.getFullPath()));
+
+    //6. Remove node label 'label1'
+    MultivaluedMapImpl params = new MultivaluedMapImpl();
+    params.add("labels", LABEL_1);
+    response =
+        removeNodeLabelsResource
+            .queryParam("user.name", userName)
+            .queryParams(params)
+            .accept(MediaType.APPLICATION_JSON)
+            .post(ClientResponse.class);
+
+    // Verify
+    response =
+        getNodeLabelsResource.queryParam("user.name", userName)
+            .accept(MediaType.APPLICATION_JSON).get(ClientResponse.class);
+    assertEquals(MediaType.APPLICATION_JSON_TYPE + "; " + JettyUtils.UTF_8,
+        response.getType().toString());
+    nodeLabelsInfo = response.getEntity(NodeLabelsInfo.class);
+    assertEquals(0, nodeLabelsInfo.getNodeLabels().size());
+
+    //6. Check residual configs
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT, LABEL_1, CAPACITY));
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT, LABEL_1, MAXIMUM_CAPACITY));
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT_A, LABEL_1, CAPACITY));
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT_A, LABEL_1, MAXIMUM_CAPACITY));
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT_A_A1, LABEL_1, CAPACITY));
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT_A_A1, LABEL_1, MAXIMUM_CAPACITY));
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT_A_A2, LABEL_1, CAPACITY));
+    assertNull(getConfValueForQueueAndLabelAndType(cs, ROOT_A_A2, LABEL_1, MAXIMUM_CAPACITY));
+  }
+
+  private String getConfValueForQueueAndLabelAndType(CapacityScheduler cs,
+      QueuePath queuePath, String label, String type) {
+    return cs.getConfiguration().get(
+        CapacitySchedulerConfiguration.getNodeLabelPrefix(
+            queuePath.getFullPath(), label) + type);
+  }
+
+  private Object logAndReturnJson(WebResource ws, String json) {
+    LOG.info("Sending to web resource: {}, json: {}", ws, json);
+    return json;
+  }
+
+  private String getAccessibleNodeLabelsCapacityPropertyName(String label) {
+    return String.format("%s.%s.%s", ACCESSIBLE_NODE_LABELS, label, CAPACITY);
+  }
+
+  private String getAccessibleNodeLabelsMaxCapacityPropertyName(String label) {
+    return String.format("%s.%s.%s", ACCESSIBLE_NODE_LABELS, label, MAXIMUM_CAPACITY);
+  }
+
   @Test
   public void testValidateWithClusterMaxAllocation() throws Exception {
     WebResource r = resource();
@@ -784,7 +1011,7 @@ public class TestRMWebServicesConfigurationMutation extends JerseyTestBase {
             .path(RMWSConsts.SCHEDULER_CONF_VALIDATE)
             .queryParam("user.name", userName)
             .accept(MediaType.APPLICATION_JSON)
-            .entity(YarnWebServiceUtils.toJson(updateInfo,
+            .entity(toJson(updateInfo,
                 SchedConfUpdateInfo.class), MediaType.APPLICATION_JSON)
             .post(ClientResponse.class);
     assertEquals(Status.OK.getStatusCode(), response.getStatus());