This closes #3208

artemis-server/src/main/java/org/apache/activemq/artemis/core/postoffice/impl/PostOfficeImpl.java

@@ -1033,7 +1033,7 @@ public class PostOfficeImpl implements PostOffice, NotificationListener, Binding
    public RoutingStatus route(final Message message,
                               final RoutingContext context,
                               final boolean direct) throws Exception {
-      return route(message, context, direct, true, null);
+      return route(message, context, direct, true, null, false);
    }
 
    @Override
@@ -1043,6 +1043,21 @@ public class PostOfficeImpl implements PostOffice, NotificationListener, Binding
                               boolean rejectDuplicates,
                               final Binding bindingMove) throws Exception {
 
+      return route(message, context, direct, rejectDuplicates, bindingMove, false);
+   }
+
+
+   /**
+    * The route can call itelf sending to DLA.
+    * if a DLA still not found, it should then use previous semantics.
+    * */
+   private RoutingStatus route(final Message message,
+                              final RoutingContext context,
+                              final boolean direct,
+                              boolean rejectDuplicates,
+                              final Binding bindingMove, boolean sendToDLA) throws Exception {
+
+
       RoutingStatus result;
       // Sanity check
       if (message.getRefCount() > 0) {
@@ -1102,7 +1117,13 @@ public class PostOfficeImpl implements PostOffice, NotificationListener, Binding
 
             AddressSettings addressSettings = addressSettingsRepository.getMatch(address.toString());
 
-            boolean sendToDLA = addressSettings.isSendToDLAOnNoRoute();
+
+            if (sendToDLA) {
+               // it's already been through here once, giving up now
+               sendToDLA = false;
+            } else {
+               sendToDLA = addressSettings.isSendToDLAOnNoRoute();
+            }
 
             if (sendToDLA) {
                // Send to the DLA for the address
@@ -1123,7 +1144,7 @@ public class PostOfficeImpl implements PostOffice, NotificationListener, Binding
 
                   message.reencode();
 
-                  route(message, context.getTransaction(), false);
+                  route(message, new RoutingContextImpl(context.getTransaction()), false, true, null, sendToDLA);
                   result = RoutingStatus.NO_BINDINGS_DLA;
                }
             } else {

artemis-server/src/main/java/org/apache/activemq/artemis/core/settings/impl/HierarchicalObjectRepository.java

@@ -304,7 +304,7 @@ public class HierarchicalObjectRepository<T> implements HierarchicalRepository<T
                clearCache();
                wildcardMatches.remove(modMatch);
             } else {
-               cache.remove(modMatch);
+               clearCache();
                exactMatches.remove(modMatch);
             }
             onChange();

tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/addressing/SendDLQNoRouteTest.java

@@ -0,0 +1,70 @@
+/*
+ * 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.
+ */
+package org.apache.activemq.artemis.tests.integration.addressing;
+
+import org.apache.activemq.artemis.api.core.RoutingType;
+import org.apache.activemq.artemis.api.core.SimpleString;
+import org.apache.activemq.artemis.api.core.client.ClientProducer;
+import org.apache.activemq.artemis.api.core.client.ClientSession;
+import org.apache.activemq.artemis.api.core.client.ClientSessionFactory;
+import org.apache.activemq.artemis.api.core.client.ServerLocator;
+import org.apache.activemq.artemis.core.server.ActiveMQServer;
+import org.apache.activemq.artemis.core.server.impl.AddressInfo;
+import org.apache.activemq.artemis.core.settings.impl.AddressSettings;
+import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
+import org.junit.Before;
+import org.junit.Test;
+
+public class SendDLQNoRouteTest extends ActiveMQTestBase {
+
+   private ActiveMQServer server;
+
+   private ClientSessionFactory sessionFactory;
+
+   @Before
+   public void setup() throws Exception {
+      server = createServer(true);
+      server.start();
+   }
+
+
+   @Test(timeout = 20_000)
+   public void testDLQNoRoute() throws Exception {
+      AddressSettings addressSettings = new AddressSettings().setSendToDLAOnNoRoute(true);
+      addressSettings.setDeadLetterAddress(SimpleString.toSimpleString("DLA"));
+      server.getAddressSettingsRepository().addMatch("#", addressSettings);
+
+      AddressInfo info = new AddressInfo(SimpleString.toSimpleString("info")).addRoutingType(RoutingType.MULTICAST);
+      server.addAddressInfo(info);
+
+      AddressInfo dla = new AddressInfo(SimpleString.toSimpleString("DLA")).addRoutingType(RoutingType.MULTICAST);
+      server.addAddressInfo(dla);
+
+
+      ServerLocator locator = createNonHALocator(false);
+
+      ClientSessionFactory factory = locator.createSessionFactory();
+      ClientSession session = factory.createSession(true, true);
+      ClientProducer producer = session.createProducer("info");
+
+      producer.send(session.createMessage(true));
+
+      session.commit();
+
+
+   }
+}

tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/management/ActiveMQServerControlTest.java

@@ -1313,7 +1313,7 @@ public class ActiveMQServerControlTest extends ManagementTestBase {
    public void testRemoveAddressSettingsEffective() throws Exception {
       ActiveMQServerControl serverControl = createManagementControl();
       String addr = "test";
-      String root = "#";
+      String root = "test.#";
 
       String DLA = "someDLA";
       String expiryAddress = "someExpiry";
@@ -1322,8 +1322,8 @@ public class ActiveMQServerControlTest extends ManagementTestBase {
       long maxExpiryDelay = 20000;
       boolean lastValueQueue = true;
       int deliveryAttempts = 1;
-      long maxSizeBytes = 20;
-      int pageSizeBytes = 10;
+      long maxSizeBytes = 10 * 1024 * 1024;
+      int pageSizeBytes = 1024 * 1024;
       int pageMaxCacheSize = 7;
       long redeliveryDelay = 4;
       double redeliveryMultiplier = 1;