YARN-8774. Memory leak when CapacityScheduler allocates from reserved container with non-default label. Contributed by Tao Yang.

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

@@ -750,9 +750,25 @@ ContainerAllocation doAllocation(ContainerAllocation allocationResult,
       // When reserving container
       RMContainer updatedContainer = reservedContainer;
       if (updatedContainer == null) {
+        AppPlacementAllocator<FiCaSchedulerNode> ps =
+            application.getAppSchedulingInfo()
+                .getAppPlacementAllocator(schedulerKey);
+        if (null == ps) {
+          LOG.warn("Failed to get " + AppPlacementAllocator.class.getName()
+              + " for application=" + application.getApplicationId()
+              + " schedulerRequestKey=" + schedulerKey);
+          ActivitiesLogger.APP
+              .recordAppActivityWithoutAllocation(activitiesManager, node,
+                  application, schedulerKey.getPriority(),
+                  ActivityDiagnosticConstant.
+                      PRIORITY_SKIPPED_BECAUSE_NULL_ANY_REQUEST,
+                  ActivityState.REJECTED);
+          return ContainerAllocation.PRIORITY_SKIPPED;
+        }
         updatedContainer = new RMContainerImpl(container, schedulerKey,
             application.getApplicationAttemptId(), node.getNodeID(),
-            application.getAppSchedulingInfo().getUser(), rmContext);
+            application.getAppSchedulingInfo().getUser(), rmContext,
+            ps.getPrimaryRequestedNodePartition());
       }
       allocationResult.updatedContainer = updatedContainer;
     }

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

@@ -547,6 +547,68 @@ public RMNodeLabelsManager createNodeLabelManager() {
     rm1.close();
   }
 
+  @Test (timeout = 120000)
+  public void testRMContainerLeakInLeafQueue() throws Exception {
+    // set node -> label
+    mgr.addToCluserNodeLabelsWithDefaultExclusivity(ImmutableSet.of("x"));
+    mgr.addLabelsToNode(ImmutableMap.of(NodeId.newInstance("h1", 0), toSet("x"),
+        NodeId.newInstance("h2", 0), toSet("x")));
+
+    // inject node label manager
+    MockRM rm1 =
+        new MockRM(TestUtils.getConfigurationWithDefaultQueueLabels(conf)) {
+          @Override public RMNodeLabelsManager createNodeLabelManager() {
+            return mgr;
+          }
+        };
+
+    rm1.getRMContext().setNodeLabelManager(mgr);
+    rm1.start();
+    MockNM nm1 = rm1.registerNode("h1:1234", 8 * GB); // label = x
+    rm1.registerNode("h2:1234", 8 * GB); // label = x
+
+    // launch an app to queue a1 (label = x), and check all container will
+    // be allocated in h1
+    RMApp app1 = rm1.submitApp(1 * GB, "app1", "user", null, "a1");
+    MockAM am1 = MockRM.launchAndRegisterAM(app1, rm1, nm1);
+
+    RMApp app2 = rm1.submitApp(1 * GB, "app2", "user", null, "a1");
+    MockRM.launchAndRegisterAM(app2, rm1, nm1);
+
+    // request a container.
+    am1.allocate("*", 7 * GB, 2, new ArrayList<ContainerId>());
+
+    CapacityScheduler cs = (CapacityScheduler) rm1.getResourceScheduler();
+    RMNode rmNode1 = rm1.getRMContext().getRMNodes().get(nm1.getNodeId());
+    LeafQueue leafQueue = (LeafQueue) cs.getQueue("a1");
+
+    // Do node heartbeats 1 time
+    // scheduler will reserve a container for app1
+    cs.handle(new NodeUpdateSchedulerEvent(rmNode1));
+
+    // Check if a 4G container allocated for app1, and 4G is reserved
+    FiCaSchedulerApp schedulerApp1 =
+        cs.getApplicationAttempt(am1.getApplicationAttemptId());
+    Assert.assertEquals(1, schedulerApp1.getLiveContainers().size());
+    Assert.assertEquals(1, schedulerApp1.getReservedContainers().size());
+
+    // kill app2 then do node heartbeat 1 time
+    // scheduler will allocate a container from the reserved container on nm1
+    rm1.killApp(app2.getApplicationId());
+    rm1.waitForState(app2.getApplicationId(), RMAppState.KILLED);
+    cs.handle(new NodeUpdateSchedulerEvent(rmNode1));
+    Assert.assertEquals(2, schedulerApp1.getLiveContainers().size());
+    Assert.assertEquals(0, schedulerApp1.getReservedContainers().size());
+
+    // After kill app1, LeafQueue#ignorePartitionExclusivityRMContainers should
+    // be clean, otherwise resource leak happened
+    rm1.killApp(app1.getApplicationId());
+    rm1.waitForState(app1.getApplicationId(), RMAppState.KILLED);
+    Assert.assertEquals(0, leafQueue.getIgnoreExclusivityRMContainers().size());
+
+    rm1.close();
+  }
+
   private void checkPendingResource(MockRM rm, int priority,
       ApplicationAttemptId attemptId, int memory) {
     CapacityScheduler cs = (CapacityScheduler) rm.getRMContext().getScheduler();