This closes #513

artemis-core-client/src/main/java/org/apache/activemq/artemis/api/core/management/ActiveMQServerControl.java

@@ -396,6 +396,13 @@ public interface ActiveMQServerControl {
    @Attribute(desc = "uptime of this server in milliseconds")
    long getUptimeMillis();
 
+   /**
+    * Returns whether the initial replication synchronization process with the backup server is complete; applicable for
+    * either the live or backup server.
+    */
+   @Attribute(desc = "whether the initial replication synchronization process with the backup server is complete")
+   boolean isReplicaSync();
+
    // Operations ----------------------------------------------------
 
    /**

artemis-server/src/main/java/org/apache/activemq/artemis/core/management/impl/ActiveMQServerControlImpl.java

@@ -669,6 +669,19 @@ public class ActiveMQServerControlImpl extends AbstractControl implements Active
       }
    }
 
+   @Override
+   public boolean isReplicaSync() {
+      checkStarted();
+
+      clearIO();
+      try {
+         return server.isReplicaSync();
+      }
+      finally {
+         blockOnIO();
+      }
+   }
+
    @Override
    public String[] getAddressNames() {
       checkStarted();

artemis-server/src/main/java/org/apache/activemq/artemis/core/server/ActiveMQMessageBundle.java

@@ -371,4 +371,7 @@ public interface ActiveMQMessageBundle {
 
    @Message(id = 119117, value = "Replicator is null. Replication was likely terminated.")
    ActiveMQIllegalStateException replicatorIsNull();
+
+   @Message(id = 119118, value = "Management method not applicable for current server configuration")
+   IllegalStateException methodNotApplicable();
 }

artemis-server/src/main/java/org/apache/activemq/artemis/core/server/ActiveMQServer.java

@@ -210,6 +210,12 @@ public interface ActiveMQServer extends ActiveMQComponent {
     */
    QueueDeleter getJMSQueueDeleter();
 
+   /**
+    * Returns whether the initial replication synchronization process with the backup server is complete; applicable for
+    * either the live or backup server.
+    */
+   boolean isReplicaSync();
+
    /**
     * Wait for server initialization.
     *

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

@@ -674,6 +674,26 @@ public class ActiveMQServerImpl implements ActiveMQServer {
       this.jmsQueueDeleter = jmsQueueDeleter;
    }
 
+   @Override
+   public boolean isReplicaSync() {
+      if (activation instanceof SharedNothingLiveActivation) {
+         ReplicationManager replicationManager = getReplicationManager();
+
+         if (replicationManager == null) {
+            return false;
+         }
+         else {
+            return !replicationManager.isSynchronizing();
+         }
+      }
+      else if (activation instanceof SharedNothingBackupActivation) {
+         return ((SharedNothingBackupActivation) activation).isRemoteBackupUpToDate();
+      }
+      else {
+         throw ActiveMQMessageBundle.BUNDLE.methodNotApplicable();
+      }
+   }
+
    /**
     * Stops the server
     *

artemis-server/src/test/java/org/apache/activemq/artemis/tests/util/ActiveMQTestBase.java

@@ -1319,7 +1319,7 @@ public abstract class ActiveMQTestBase extends Assert {
          boolean isRemoteUpToDate = true;
          if (isReplicated) {
             if (activation instanceof SharedNothingBackupActivation) {
-               isRemoteUpToDate = ((SharedNothingBackupActivation) activation).isRemoteBackupUpToDate();
+               isRemoteUpToDate = backup.isReplicaSync();
             }
             else {
                //we may have already failed over and changed the Activation

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

@@ -238,6 +238,11 @@ public class ActiveMQServerControlUsingCoreTest extends ActiveMQServerControlTes
             return 0;
          }
 
+         @Override
+         public boolean isReplicaSync() {
+            return false;
+         }
+
          @Override
          public int getIDCacheSize() {
             return (Integer) proxy.retrieveAttributeValue("IDCacheSize");