diff --git a/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/CCApplication.java b/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/CCApplication.java
index 336839a..13027eca 100644
--- a/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/CCApplication.java
+++ b/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/CCApplication.java
@@ -87,7 +87,6 @@
 import org.apache.asterix.translator.Receptionist;
 import org.apache.asterix.util.MetadataBuiltinFunctions;
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
-import org.apache.hyracks.api.application.ICCServiceContext;
 import org.apache.hyracks.api.application.IServiceContext;
 import org.apache.hyracks.api.client.IHyracksClientConnection;
 import org.apache.hyracks.api.config.IConfigManager;
@@ -114,7 +113,6 @@
 
     private static final Logger LOGGER = LogManager.getLogger();
     private static IAsterixStateProxy proxy;
-    protected ICCServiceContext ccServiceCtx;
     protected CCExtensionManager ccExtensionManager;
     protected IStorageComponentProvider componentProvider;
     protected WebManager webManager;
@@ -125,7 +123,6 @@
     @Override
     public void init(IServiceContext serviceCtx) throws Exception {
         super.init(serviceCtx);
-        ccServiceCtx = (ICCServiceContext) serviceCtx;
         ccServiceCtx.setThreadFactory(
                 new AsterixThreadFactory(ccServiceCtx.getThreadFactory(), new LifeCycleComponentManager()));
         validateEnvironment();
diff --git a/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/NCApplication.java b/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/NCApplication.java
index eba2049..2e5c09c 100644
--- a/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/NCApplication.java
+++ b/asterixdb/asterix-app/src/main/java/org/apache/asterix/hyracks/bootstrap/NCApplication.java
@@ -72,7 +72,6 @@
 import org.apache.asterix.transaction.management.resource.PersistentLocalResourceRepository;
 import org.apache.asterix.translator.Receptionist;
 import org.apache.asterix.util.MetadataBuiltinFunctions;
-import org.apache.hyracks.api.application.INCServiceContext;
 import org.apache.hyracks.api.application.IServiceContext;
 import org.apache.hyracks.api.client.NodeStatus;
 import org.apache.hyracks.api.config.IConfigManager;
@@ -94,8 +93,6 @@
 
 public class NCApplication extends BaseNCApplication {
     private static final Logger LOGGER = LogManager.getLogger();
-
-    protected INCServiceContext ncServiceCtx;
     protected NCExtensionManager ncExtensionManager;
     private INcApplicationContext runtimeContext;
     private String nodeId;
@@ -111,7 +108,7 @@
 
     @Override
     public void init(IServiceContext serviceCtx) throws Exception {
-        ncServiceCtx = (INCServiceContext) serviceCtx;
+        super.init(serviceCtx);
         configureLoggingLevel(ncServiceCtx.getAppConfig().getLoggingLevel(ExternalProperties.Option.LOG_LEVEL));
         // set the node status initially to idle to indicate that it is pending booting
         ((NodeControllerService) serviceCtx.getControllerService()).setNodeStatus(NodeStatus.IDLE);
@@ -240,6 +237,7 @@
                 LOGGER.info("Duplicate attempt to stop ignored: " + nodeId);
             }
         }
+        super.stop();
     }
 
     @Override
@@ -249,6 +247,7 @@
 
     @Override
     public synchronized void startupCompleted() throws Exception {
+        super.startupCompleted();
         // configure servlets after joining the cluster, so we can create HyracksClientConnection
         configureServers();
         webManager.start();
diff --git a/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/AsterixHyracksIntegrationUtil.java b/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/AsterixHyracksIntegrationUtil.java
index 4837a98..df16daf 100644
--- a/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/AsterixHyracksIntegrationUtil.java
+++ b/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/AsterixHyracksIntegrationUtil.java
@@ -426,6 +426,7 @@
         public void stop() throws Exception {
             // ungraceful shutdown
             webManager.stop();
+            super.stop();
         }
     }
 
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/quantifiers/query-ASTERIXDB-2696.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/quantifiers/query-ASTERIXDB-2696.sqlpp
new file mode 100644
index 0000000..3f2988a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/quantifiers/query-ASTERIXDB-2696.sqlpp
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+from [
+   { "a": 1, "b": [ 10, 20, 30] },
+   { "a": 1, "b": [ 40, 50, 60] },
+   { "a": 1, "b": [ 70, 80, 90] },
+   { "a": 2, "b": [ 100, 200, 300] },
+   { "a": 2, "b": [ 400, 500, 600] },
+   { "a": 2, "b": [ 700, 800, 900] }
+] t
+group by a
+select a, sum( case when some x in b satisfies x >= 50 then 1 else 0 end) as s;
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/quantifiers/query-ASTERIXDB-2696.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/quantifiers/query-ASTERIXDB-2696.plan
new file mode 100644
index 0000000..26b18be
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/quantifiers/query-ASTERIXDB-2696.plan
@@ -0,0 +1,25 @@
+-- DISTRIBUTE_RESULT  |LOCAL|
+  -- ONE_TO_ONE_EXCHANGE  |LOCAL|
+    -- STREAM_PROJECT  |LOCAL|
+      -- ASSIGN  |LOCAL|
+        -- ONE_TO_ONE_EXCHANGE  |LOCAL|
+          -- PRE_CLUSTERED_GROUP_BY[$$67]  |LOCAL|
+                  {
+                    -- AGGREGATE  |LOCAL|
+                      -- AGGREGATE  |LOCAL|
+                        -- SUBPLAN  |LOCAL|
+                                {
+                                  -- AGGREGATE  |LOCAL|
+                                    -- STREAM_SELECT  |LOCAL|
+                                      -- UNNEST  |LOCAL|
+                                        -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                }
+                          -- NESTED_TUPLE_SOURCE  |LOCAL|
+                  }
+            -- ONE_TO_ONE_EXCHANGE  |LOCAL|
+              -- STABLE_SORT [$$67(ASC)]  |LOCAL|
+                -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
+                  -- STREAM_PROJECT  |UNPARTITIONED|
+                    -- ASSIGN  |UNPARTITIONED|
+                      -- UNNEST  |UNPARTITIONED|
+                        -- EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/quantifiers/query-ASTERIXDB-2696/query-ASTERIXDB-2696.1.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/quantifiers/query-ASTERIXDB-2696/query-ASTERIXDB-2696.1.query.sqlpp
new file mode 100644
index 0000000..3f2988a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/quantifiers/query-ASTERIXDB-2696/query-ASTERIXDB-2696.1.query.sqlpp
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+from [
+   { "a": 1, "b": [ 10, 20, 30] },
+   { "a": 1, "b": [ 40, 50, 60] },
+   { "a": 1, "b": [ 70, 80, 90] },
+   { "a": 2, "b": [ 100, 200, 300] },
+   { "a": 2, "b": [ 400, 500, 600] },
+   { "a": 2, "b": [ 700, 800, 900] }
+] t
+group by a
+select a, sum( case when some x in b satisfies x >= 50 then 1 else 0 end) as s;
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/quantifiers/query-ASTERIXDB-2696/query-ASTERIXDB-2696.1.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/quantifiers/query-ASTERIXDB-2696/query-ASTERIXDB-2696.1.adm
new file mode 100644
index 0000000..fcf5cee
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/quantifiers/query-ASTERIXDB-2696/query-ASTERIXDB-2696.1.adm
@@ -0,0 +1,2 @@
+{ "a": 1, "s": 2 }
+{ "a": 2, "s": 3 }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
index 2045fb8..aa5fc5d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
@@ -8332,6 +8332,11 @@
         <output-dir compare="Text">query-ASTERIXDB-2307</output-dir>
       </compilation-unit>
     </test-case>
+    <test-case FilePath="quantifiers">
+      <compilation-unit name="query-ASTERIXDB-2696">
+        <output-dir compare="Text">query-ASTERIXDB-2696</output-dir>
+      </compilation-unit>
+    </test-case>
     <!--
         <test-case FilePath="quantifiers">
           <compilation-unit name="everysat_02">
diff --git a/asterixdb/asterix-common/src/test/java/org/apache/asterix/test/base/AsterixTestHelper.java b/asterixdb/asterix-common/src/test/java/org/apache/asterix/test/base/AsterixTestHelper.java
index 3840a00..cec0de7 100644
--- a/asterixdb/asterix-common/src/test/java/org/apache/asterix/test/base/AsterixTestHelper.java
+++ b/asterixdb/asterix-common/src/test/java/org/apache/asterix/test/base/AsterixTestHelper.java
@@ -88,7 +88,6 @@
                 deepSelectiveCopy(child, destChild, filter);
             } else if (filter.accept(child)) {
                 FileUtil.safeCopyFile(child, destChild);
-                return;
             }
         }
     }
diff --git a/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/PartitionReplica.java b/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/PartitionReplica.java
index f2d2496..3226299 100644
--- a/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/PartitionReplica.java
+++ b/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/PartitionReplica.java
@@ -106,12 +106,9 @@
     }
 
     private void establishReplicaConnection() throws IOException {
-        try {
-            sc = ReplicationProtocol.establishReplicaConnection(appCtx, id.getLocation());
-        } catch (Exception e) {
-            // try to re-resolve the address, in case our replica has had his IP address updated
-            sc = ReplicationProtocol.establishReplicaConnection(appCtx, id.refreshLocation());
-        }
+        // try to re-resolve the address, in case our replica has had his IP address updated, and that is why the
+        // connection is unhealthy...
+        sc = ReplicationProtocol.establishReplicaConnection(appCtx, id.refreshLocation());
     }
 
     public synchronized void close() {
diff --git a/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/ReplicationDestination.java b/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/ReplicationDestination.java
index 782a801..d803756 100644
--- a/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/ReplicationDestination.java
+++ b/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/api/ReplicationDestination.java
@@ -94,13 +94,10 @@
     }
 
     protected void establishReplicaConnection(INcApplicationContext appCtx) throws IOException {
-        try {
-            logRepChannel = ReplicationProtocol.establishReplicaConnection(appCtx, resolvedLocation);
-        } catch (Exception e) {
-            // try to re-resolve the address, in case our replica has had his IP address updated
-            resolvedLocation = NetworkUtil.refresh(resolvedLocation);
-            logRepChannel = ReplicationProtocol.establishReplicaConnection(appCtx, resolvedLocation);
-        }
+        // try to re-resolve the address, in case our replica has had his IP address updated, and that is why
+        // the connection is unhealthy...
+        resolvedLocation = NetworkUtil.refresh(resolvedLocation);
+        logRepChannel = ReplicationProtocol.establishReplicaConnection(appCtx, resolvedLocation);
     }
 
     private synchronized void closeLogReplicationChannel() {
diff --git a/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/CardinalityInferenceVisitor.java b/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/CardinalityInferenceVisitor.java
index 64d1b61..54cbcd0 100644
--- a/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/CardinalityInferenceVisitor.java
+++ b/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/CardinalityInferenceVisitor.java
@@ -26,6 +26,7 @@
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
 import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
 import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
+import org.apache.hyracks.algebricks.core.algebra.base.LogicalOperatorTag;
 import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable;
 import org.apache.hyracks.algebricks.core.algebra.expressions.ConstantExpression;
 import org.apache.hyracks.algebricks.core.algebra.operators.logical.AggregateOperator;
@@ -147,7 +148,7 @@
 
     @Override
     public Long visitNestedTupleSourceOperator(NestedTupleSourceOperator op, Void arg) throws AlgebricksException {
-        return ONE;
+        return op.getDataSourceReference().getValue().getOperatorTag() == LogicalOperatorTag.SUBPLAN ? ONE : UNKNOWN;
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/service/IControllerService.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/service/IControllerService.java
index 018f9fe..c92c677 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/service/IControllerService.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/service/IControllerService.java
@@ -25,6 +25,8 @@
 import org.apache.hyracks.api.network.INetworkSecurityManager;
 
 public interface IControllerService {
+    String getId();
+
     void start() throws Exception;
 
     void stop() throws Exception;
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/InvokeUtil.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/InvokeUtil.java
index ffd2956..5d52ed9 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/InvokeUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/InvokeUtil.java
@@ -53,7 +53,7 @@
      * completes, the current thread will be re-interrupted, if the original operation was interrupted.
      */
     public static void doUninterruptibly(InterruptibleAction interruptible) {
-        boolean interrupted = false;
+        boolean interrupted = Thread.interrupted();
         try {
             while (true) {
                 try {
@@ -75,7 +75,7 @@
      * completes, the current thread will be re-interrupted, if the original operation was interrupted.
      */
     public static void doExUninterruptibly(ThrowingAction interruptible) throws Exception {
-        boolean interrupted = false;
+        boolean interrupted = Thread.interrupted();
         try {
             while (true) {
                 try {
@@ -98,7 +98,7 @@
      * @return true if the original operation was interrupted, otherwise false
      */
     public static boolean doUninterruptiblyGet(InterruptibleAction interruptible) {
-        boolean interrupted = false;
+        boolean interrupted = Thread.interrupted();
         while (true) {
             try {
                 interruptible.run();
@@ -117,7 +117,7 @@
      * @return true if the original operation was interrupted, otherwise false
      */
     public static boolean doExUninterruptiblyGet(Callable<Void> interruptible) throws Exception {
-        boolean interrupted = false;
+        boolean interrupted = Thread.interrupted();
         boolean success = false;
         while (true) {
             try {
@@ -168,7 +168,7 @@
      * the original operation was interrupted.
      */
     public static void doIoUninterruptibly(IOInterruptibleAction interruptible) throws IOException {
-        boolean interrupted = false;
+        boolean interrupted = Thread.interrupted();
         try {
             while (true) {
                 try {
@@ -177,6 +177,7 @@
                 } catch (ClosedByInterruptException | InterruptedException e) {
                     LOGGER.error("IO operation Interrupted. Retrying..", e);
                     interrupted = true;
+                    //noinspection ResultOfMethodCallIgnored
                     Thread.interrupted();
                 }
             }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/BaseCCApplication.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/BaseCCApplication.java
index b41d5a2..efd42c9 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/BaseCCApplication.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/BaseCCApplication.java
@@ -21,6 +21,7 @@
 import java.util.Arrays;
 
 import org.apache.hyracks.api.application.ICCApplication;
+import org.apache.hyracks.api.application.ICCServiceContext;
 import org.apache.hyracks.api.application.IServiceContext;
 import org.apache.hyracks.api.config.IConfigManager;
 import org.apache.hyracks.api.config.Section;
@@ -29,23 +30,27 @@
 import org.apache.hyracks.api.job.resource.IJobCapacityController;
 import org.apache.hyracks.api.result.IJobResultCallback;
 import org.apache.hyracks.api.util.HyracksConstants;
+import org.apache.hyracks.control.common.ControllerShutdownHook;
 import org.apache.hyracks.control.common.controllers.CCConfig;
 import org.apache.hyracks.control.common.controllers.ControllerConfig;
 import org.apache.hyracks.control.common.controllers.NCConfig;
+import org.apache.hyracks.util.ExitUtil;
 import org.apache.hyracks.util.LoggingConfigUtil;
 import org.apache.logging.log4j.Level;
 
 public class BaseCCApplication implements ICCApplication {
 
     public static final ICCApplication INSTANCE = new BaseCCApplication();
+    protected ICCServiceContext ccServiceCtx;
     private IConfigManager configManager;
+    private Thread shutdownHook;
 
     protected BaseCCApplication() {
     }
 
     @Override
     public void init(IServiceContext serviceCtx) throws Exception {
-        // no-op
+        ccServiceCtx = (ICCServiceContext) serviceCtx;
     }
 
     @Override
@@ -56,13 +61,28 @@
     }
 
     @Override
-    public void stop() throws Exception {
-        // no-op
+    public void startupCompleted() throws Exception {
+        installShutdownHook();
     }
 
     @Override
-    public void startupCompleted() throws Exception {
-        // no-op
+    public void stop() throws Exception {
+        uninstallShutdownHook();
+    }
+
+    protected Thread createShutdownHook() {
+        return new ControllerShutdownHook(ccServiceCtx);
+    }
+
+    protected void installShutdownHook() {
+        shutdownHook = createShutdownHook();
+        ExitUtil.registerShutdownHook(shutdownHook);
+    }
+
+    protected void uninstallShutdownHook() {
+        if (shutdownHook != null) {
+            ExitUtil.unregisterShutdownHook(shutdownHook);
+        }
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/ClusterControllerService.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/ClusterControllerService.java
index 1e92f16..f11e7ff 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/ClusterControllerService.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/ClusterControllerService.java
@@ -209,11 +209,17 @@
     }
 
     @Override
+    public String getId() {
+        return "ClusterControllerService";
+    }
+
+    @Override
     public void start() throws Exception {
         LOGGER.log(Level.INFO, "Starting ClusterControllerService: " + this);
         serverCtx = new ServerContext(ServerContext.ServerType.CLUSTER_CONTROLLER, new File(ccConfig.getRootDir()));
         IIPCI ccIPCI = new ClusterControllerIPCI(this);
-        clusterIPC = new IPCSystem(new InetSocketAddress(ccConfig.getClusterListenPort()),
+        clusterIPC = new IPCSystem(
+                new InetSocketAddress(ccConfig.getClusterListenAddress(), ccConfig.getClusterListenPort()),
                 networkSecurityManager.getSocketChannelFactory(), ccIPCI, new CCNCFunctions.SerializerDeserializer());
         IIPCI ciIPCI = new ClientInterfaceIPCI(this, jobIdFactory);
         clientIPC =
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/ClusterShutdownWork.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/ClusterShutdownWork.java
index 194d27f..9c504ed 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/ClusterShutdownWork.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/ClusterShutdownWork.java
@@ -69,7 +69,9 @@
              */
             nodeManager.apply(this::shutdownNode);
 
-            ccs.getExecutor().execute(() -> {
+            // complete the rest of the tasks in a separate standalone thread, to better allow our worker & executor
+            // queues to drain during shutdown
+            Thread finalWork = new Thread(() -> {
                 try {
                     /*
                      * wait for all our acks
@@ -88,8 +90,11 @@
                     ExitUtil.exit(cleanShutdown ? EC_NORMAL_TERMINATION : EC_ABNORMAL_TERMINATION);
                 } catch (Exception e) {
                     callback.setException(e);
+                } finally {
+                    shutdownStatus.notifyCcStopComplete();
                 }
-            });
+            }, getClass().getSimpleName() + "-Helper");
+            finalWork.start();
         } catch (Exception e) {
             callback.setException(e);
         }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NCShutdownHook.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/ControllerShutdownHook.java
similarity index 73%
rename from hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NCShutdownHook.java
rename to hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/ControllerShutdownHook.java
index ffa02d6..806e42e 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NCShutdownHook.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/ControllerShutdownHook.java
@@ -16,26 +16,28 @@
  * specific language governing permissions and limitations
  * under the License.
  */
-package org.apache.hyracks.control.nc;
+package org.apache.hyracks.control.common;
 
+import org.apache.hyracks.api.application.IServiceContext;
+import org.apache.hyracks.api.service.IControllerService;
 import org.apache.hyracks.util.ThreadDumpUtil;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 /**
- * Shutdown hook that invokes {@link NodeControllerService#stop() stop} method.
+ * Shutdown hook that invokes {@link IControllerService#stop() stop} method.
  * This shutdown hook must have a failsafe mechanism to halt the process in case the shutdown
  * operation is hanging for any reason
  */
-public class NCShutdownHook extends Thread {
+public class ControllerShutdownHook extends Thread {
 
     private static final Logger LOGGER = LogManager.getLogger();
-    private final NodeControllerService nodeControllerService;
+    private final IControllerService controllerService;
 
-    NCShutdownHook(NodeControllerService nodeControllerService) {
-        super("ShutdownHook-" + nodeControllerService.getId());
-        this.nodeControllerService = nodeControllerService;
+    public ControllerShutdownHook(IServiceContext serviceCtx) {
+        super("ShutdownHook-" + serviceCtx.getControllerService().getId());
+        this.controllerService = serviceCtx.getControllerService();
     }
 
     @Override
@@ -46,7 +48,7 @@
             } catch (Throwable th) {//NOSONAR
             }
             LOGGER.log(Level.DEBUG, () -> "Thread dump at shutdown: " + ThreadDumpUtil.takeDumpString());
-            nodeControllerService.stop();
+            controllerService.stop();
         } catch (Throwable th) { // NOSONAR... This is fine since this is shutdown hook
             LOGGER.log(Level.WARN, "Exception in executing shutdown hook", th);
         }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/controllers/CCConfig.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/controllers/CCConfig.java
index 4f35aca..0de75d9 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/controllers/CCConfig.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/controllers/CCConfig.java
@@ -247,9 +247,6 @@
         return configManager.toIni(false);
     }
 
-    // QQQ Note that clusterListenAddress is *not directly used* yet. Both
-    // the cluster listener and the web server listen on "all interfaces".
-    // This IP address is only used to instruct the NC on which IP to call in.
     public String getClusterListenAddress() {
         return getAppConfig().getString(Option.CLUSTER_LISTEN_ADDRESS);
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/IShutdownStatusConditionVariable.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/IShutdownStatusConditionVariable.java
index 26351e2..35d6393 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/IShutdownStatusConditionVariable.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/IShutdownStatusConditionVariable.java
@@ -23,6 +23,5 @@
      * @return true if all nodes ack shutdown
      * @throws Exception
      */
-    public boolean waitForCompletion() throws Exception;
-
+    boolean waitForCompletion() throws Exception;
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/ShutdownRun.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/ShutdownRun.java
index e210963..0a54d1a 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/ShutdownRun.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/shutdown/ShutdownRun.java
@@ -24,11 +24,13 @@
 import java.util.TreeSet;
 import java.util.concurrent.TimeUnit;
 
+import org.apache.hyracks.util.Span;
+
 public class ShutdownRun implements IShutdownStatusConditionVariable {
 
     private final Set<String> shutdownNodeIds = new TreeSet<>();
-    private boolean shutdownSuccess = false;
-    private static final long SHUTDOWN_TIMER_MS = TimeUnit.SECONDS.toMillis(30);
+    private boolean ccStopComplete = false;
+    private static final long SHUTDOWN_TIMEOUT_SECONDS = 60;
 
     public ShutdownRun(Collection<String> nodeIds) {
         shutdownNodeIds.addAll(nodeIds);
@@ -42,26 +44,38 @@
     public synchronized void notifyShutdown(String nodeId) {
         shutdownNodeIds.remove(nodeId);
         if (shutdownNodeIds.isEmpty()) {
-            shutdownSuccess = true;
             notifyAll();
         }
     }
 
     @Override
     public synchronized boolean waitForCompletion() throws Exception {
-        if (shutdownNodeIds.isEmpty()) {
-            shutdownSuccess = true;
-        } else {
+        Span span = Span.start(SHUTDOWN_TIMEOUT_SECONDS, TimeUnit.SECONDS);
+        while (!span.elapsed()) {
+            if (shutdownNodeIds.isEmpty()) {
+                return true;
+            }
             /*
-             * Either be woken up when we're done, or default to fail.
+             * Either be woken up when we're done, or after (remaining) timeout has elapsed
              */
-            wait(SHUTDOWN_TIMER_MS);
+            span.wait(this);
         }
-        return shutdownSuccess;
+        return false;
     }
 
     public synchronized Set<String> getRemainingNodes() {
         return shutdownNodeIds;
     }
 
+    public synchronized void notifyCcStopComplete() {
+        ccStopComplete = true;
+        notifyAll();
+    }
+
+    public synchronized boolean waitForCcStopCompletion() throws Exception {
+        while (!ccStopComplete) {
+            wait();
+        }
+        return true;
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/BaseNCApplication.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/BaseNCApplication.java
index 882c396..b020cde 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/BaseNCApplication.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/BaseNCApplication.java
@@ -22,6 +22,7 @@
 import java.util.Arrays;
 
 import org.apache.hyracks.api.application.INCApplication;
+import org.apache.hyracks.api.application.INCServiceContext;
 import org.apache.hyracks.api.application.IServiceContext;
 import org.apache.hyracks.api.config.IConfigManager;
 import org.apache.hyracks.api.config.Section;
@@ -29,24 +30,28 @@
 import org.apache.hyracks.api.io.IFileDeviceResolver;
 import org.apache.hyracks.api.job.resource.NodeCapacity;
 import org.apache.hyracks.api.util.HyracksConstants;
+import org.apache.hyracks.control.common.ControllerShutdownHook;
 import org.apache.hyracks.control.common.config.ConfigManager;
 import org.apache.hyracks.control.common.controllers.CCConfig;
 import org.apache.hyracks.control.common.controllers.ControllerConfig;
 import org.apache.hyracks.control.common.controllers.NCConfig;
 import org.apache.hyracks.control.nc.io.DefaultDeviceResolver;
+import org.apache.hyracks.util.ExitUtil;
 import org.apache.hyracks.util.LoggingConfigUtil;
 import org.apache.logging.log4j.Level;
 
 public class BaseNCApplication implements INCApplication {
     public static final BaseNCApplication INSTANCE = new BaseNCApplication();
+    protected INCServiceContext ncServiceCtx;
     private ConfigManager configManager;
+    private Thread shutdownHook;
 
     protected BaseNCApplication() {
     }
 
     @Override
     public void init(IServiceContext serviceCtx) throws Exception {
-        // no-op
+        ncServiceCtx = (INCServiceContext) serviceCtx;
     }
 
     @Override
@@ -58,7 +63,7 @@
 
     @Override
     public void startupCompleted() throws Exception {
-        // no-op
+        installShutdownHook();
     }
 
     @Override
@@ -68,7 +73,7 @@
 
     @Override
     public void stop() throws Exception {
-        // no-op
+        uninstallShutdownHook();
     }
 
     @Override
@@ -76,6 +81,21 @@
         // no-op
     }
 
+    protected Thread createShutdownHook() {
+        return new ControllerShutdownHook(ncServiceCtx);
+    }
+
+    protected void installShutdownHook() {
+        shutdownHook = createShutdownHook();
+        ExitUtil.registerShutdownHook(shutdownHook);
+    }
+
+    protected void uninstallShutdownHook() {
+        if (shutdownHook != null) {
+            ExitUtil.unregisterShutdownHook(shutdownHook);
+        }
+    }
+
     @Override
     public NodeCapacity getCapacity() {
         int allCores = ManagementFactory.getOperatingSystemMXBean().getAvailableProcessors();
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
index ac2ef83..bab729f 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
@@ -187,8 +187,6 @@
         ExitUtil.init();
     }
 
-    private NCShutdownHook ncShutdownHook;
-
     public NodeControllerService(NCConfig config) throws Exception {
         this(config, getApplication(config));
     }
@@ -210,9 +208,6 @@
         if (LOGGER.isInfoEnabled()) {
             LOGGER.info("Setting uncaught exception handler " + getLifeCycleComponentManager());
         }
-        // Set shutdown hook before so it doesn't have the same uncaught exception handler
-        ncShutdownHook = new NCShutdownHook(this);
-        Runtime.getRuntime().addShutdownHook(ncShutdownHook);
         Thread.currentThread().setUncaughtExceptionHandler(getLifeCycleComponentManager());
         ioManager = new IOManager(IODeviceHandle.getDevices(ncConfig.getIODevices()),
                 application.getFileDeviceResolver(), ncConfig.getIOParallelism(), ncConfig.getIOQueueSize());
@@ -488,54 +483,47 @@
 
     @Override
     public synchronized void stop() throws Exception {
-        if (shutdownCallStack == null) {
-            shutdownCallStack = new Throwable().getStackTrace();
-            LOGGER.log(Level.INFO, "Stopping NodeControllerService");
-            application.preStop();
-            executor.shutdownNow();
-            if (!executor.awaitTermination(10, TimeUnit.SECONDS)) {
-                LOGGER.log(Level.ERROR, "Some jobs failed to exit, continuing with abnormal shutdown");
-            }
-            partitionManager.close();
-            resultPartitionManager.close();
-            netManager.stop();
-            resultNetworkManager.stop();
-            if (messagingNetManager != null) {
-                messagingNetManager.stop();
-            }
-            workQueue.stop();
-            application.stop();
-            /*
-             * Stop heartbeats only after NC has stopped to avoid false node failure detection
-             * on CC if an NC takes a long time to stop.
-             */
-            heartbeatManagers.values().parallelStream().forEach(HeartbeatManager::shutdown);
-            synchronized (ccLock) {
-                ccMap.values().parallelStream().forEach(cc -> {
-                    try {
-                        cc.getClusterControllerService().notifyShutdown(id);
-                    } catch (Exception e) {
-                        LOGGER.log(Level.WARN, "Exception notifying CC of shutdown", e);
-                    }
-                });
-            }
-            ipc.stop();
-            ioManager.close();
-            LOGGER.log(Level.INFO, "Stopped NodeControllerService");
-        } else {
-            LOGGER.log(Level.ERROR, "Duplicate shutdown call; original: " + Arrays.toString(shutdownCallStack),
+        if (shutdownCallStack != null) {
+            LOGGER.error("Duplicate shutdown call; original: " + Arrays.toString(shutdownCallStack),
                     new Exception("Duplicate shutdown call"));
+            return;
         }
-        if (ncShutdownHook != null) {
-            try {
-                Runtime.getRuntime().removeShutdownHook(ncShutdownHook);
-                LOGGER.info("removed shutdown hook for {}", id);
-            } catch (IllegalStateException e) {
-                LOGGER.log(Level.DEBUG, "ignoring exception while attempting to remove shutdown hook", e);
-            }
+        shutdownCallStack = new Throwable().getStackTrace();
+        LOGGER.info("Stopping NodeControllerService");
+        application.preStop();
+        executor.shutdownNow();
+        if (!executor.awaitTermination(10, TimeUnit.SECONDS)) {
+            LOGGER.log(Level.ERROR, "Some jobs failed to exit, continuing with abnormal shutdown");
         }
+        partitionManager.close();
+        resultPartitionManager.close();
+        netManager.stop();
+        resultNetworkManager.stop();
+        if (messagingNetManager != null) {
+            messagingNetManager.stop();
+        }
+        workQueue.stop();
+        application.stop();
+        /*
+         * Stop heartbeats only after NC has stopped to avoid false node failure detection
+         * on CC if an NC takes a long time to stop.
+         */
+        heartbeatManagers.values().parallelStream().forEach(HeartbeatManager::shutdown);
+        synchronized (ccLock) {
+            ccMap.values().parallelStream().forEach(cc -> {
+                try {
+                    cc.getClusterControllerService().notifyShutdown(id);
+                } catch (Exception e) {
+                    LOGGER.log(Level.WARN, "Exception notifying CC of shutdown", e);
+                }
+            });
+        }
+        ipc.stop();
+        ioManager.close();
+        LOGGER.info("Stopped NodeControllerService");
     }
 
+    @Override
     public String getId() {
         return id;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCConnectionManager.java b/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCConnectionManager.java
index 58aa39e..eaae8e7 100644
--- a/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCConnectionManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCConnectionManager.java
@@ -37,12 +37,14 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
 
 import org.apache.hyracks.api.network.ISocketChannel;
 import org.apache.hyracks.api.network.ISocketChannelFactory;
+import org.apache.hyracks.api.util.InvokeUtil;
+import org.apache.hyracks.ipc.exceptions.IPCException;
 import org.apache.hyracks.util.ExitUtil;
 import org.apache.hyracks.util.NetworkUtil;
-import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -52,6 +54,7 @@
     // TODO(mblow): the next two could be config parameters
     private static final int INITIAL_RETRY_DELAY_MILLIS = 100;
     private static final int MAX_RETRY_DELAY_MILLIS = 15000;
+    private static final int MAX_STOP_JOIN_WAIT_MILLIS = 30000;
 
     private final IPCSystem system;
 
@@ -107,6 +110,11 @@
         stopped = true;
         NetworkUtil.closeQuietly(serverSocketChannel);
         networkThread.selector.wakeup();
+        InvokeUtil.doUninterruptibly(() -> networkThread.join(MAX_STOP_JOIN_WAIT_MILLIS));
+        if (networkThread.isAlive()) {
+            LOGGER.warn("giving up after waiting {}s for networkThread to exit",
+                    TimeUnit.MILLISECONDS.toSeconds(MAX_STOP_JOIN_WAIT_MILLIS));
+        }
     }
 
     IPCHandle getIPCHandle(InetSocketAddress remoteAddress, int maxRetries) throws IOException, InterruptedException {
@@ -154,7 +162,14 @@
         }
     }
 
-    synchronized void write(Message msg) {
+    synchronized void send(Message msg) throws IPCException {
+        if (stopped) {
+            throw new IPCException("ipc system has been stopped");
+        }
+        write(msg);
+    }
+
+    private synchronized void write(Message msg) {
         if (LOGGER.isTraceEnabled()) {
             LOGGER.trace("Enqueued message: " + msg);
         }
@@ -216,9 +231,24 @@
                         processSelectedKeys();
                     }
                 } catch (Exception e) {
-                    LOGGER.log(Level.ERROR, "Exception processing message", e);
+                    LOGGER.error("Exception processing message", e);
                 }
             }
+            // process any last work we accepted prior to being stopped, before we terminate
+            collectOutstandingWork();
+            LOGGER.trace("had {} pending messages at stop time!", workingSendList.size());
+            if (!workingSendList.isEmpty()) {
+                sendPendingMessages();
+            }
+            try {
+                int n = selector.selectNow();
+                LOGGER.trace("had {} keys remaining at stop time!", n);
+                if (n > 0) {
+                    processSelectedKeys();
+                }
+            } catch (Exception e) {
+                LOGGER.error("Exception processing message", e);
+            }
         }
 
         private void processSelectedKeys() {
@@ -340,6 +370,7 @@
             IPCHandle handle = msg.getIPCHandle();
             if (handle.getState() == HandleState.CLOSED) {
                 // message will never be sent
+                LOGGER.info("Could not send message: {}, due to {}", msg, handle);
                 return true;
             }
             if (handle.full()) {
diff --git a/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCHandle.java b/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCHandle.java
index 25abfe1..ddcc677 100644
--- a/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCHandle.java
+++ b/hyracks-fullstack/hyracks/hyracks-ipc/src/main/java/org/apache/hyracks/ipc/impl/IPCHandle.java
@@ -81,7 +81,7 @@
             msg.setFlag(Message.NORMAL);
             msg.setPayload(req);
         }
-        system.getConnectionManager().write(msg);
+        system.getConnectionManager().send(msg);
         return mid;
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java
index 680d55e..f8bc9f9 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java
@@ -104,6 +104,28 @@
         Runtime.getRuntime().halt(status);
     }
 
+    public static boolean registerShutdownHook(Thread shutdownHook) {
+        try {
+            Runtime.getRuntime().addShutdownHook(shutdownHook);
+            LOGGER.info("successfully registered shutdown hook {}", shutdownHook);
+            return true;
+        } catch (Exception e) {
+            LOGGER.warn("unable to register shutdown hook {}", shutdownHook, e);
+            return false;
+        }
+    }
+
+    public static boolean unregisterShutdownHook(Thread shutdownHook) {
+        try {
+            boolean success = Runtime.getRuntime().removeShutdownHook(shutdownHook);
+            LOGGER.info("{}successfully removed shutdown hook {}", success ? "" : "un", shutdownHook);
+            return success;
+        } catch (IllegalStateException e) {
+            LOGGER.log(Level.DEBUG, "ignoring exception while attempting to remove shutdown hook", e);
+            return false;
+        }
+    }
+
     private static class ShutdownWatchdog extends Thread {
 
         private final Semaphore startSemaphore = new Semaphore(0);