[ISSUE #6421] Fix the encode bug.

remoting/src/main/java/org/apache/rocketmq/remoting/protocol/body/BrokerReplicasInfo.java

@@ -39,7 +39,7 @@ public class BrokerReplicasInfo extends RemotingSerializable  {
     }
 
     public void setReplicasInfoTable(
-        Map<String, ReplicasInfo> replicasInfoTable) {
+            Map<String, ReplicasInfo> replicasInfoTable) {
         this.replicasInfoTable = replicasInfoTable;
     }
 
@@ -92,7 +92,7 @@ public class BrokerReplicasInfo extends RemotingSerializable  {
         }
 
         public void setInSyncReplicas(
-            List<ReplicaIdentity> inSyncReplicas) {
+                List<ReplicaIdentity> inSyncReplicas) {
             this.inSyncReplicas = inSyncReplicas;
         }
 
@@ -101,7 +101,7 @@ public class BrokerReplicasInfo extends RemotingSerializable  {
         }
 
         public void setNotInSyncReplicas(
-            List<ReplicaIdentity> notInSyncReplicas) {
+                List<ReplicaIdentity> notInSyncReplicas) {
             this.notInSyncReplicas = notInSyncReplicas;
         }
 
@@ -131,12 +131,20 @@ public class BrokerReplicasInfo extends RemotingSerializable  {
         private Long brokerId;
 
         private String brokerAddress;
-        private Boolean isAlive = false;
+        private Boolean alive;
 
         public ReplicaIdentity(String brokerName, Long brokerId, String brokerAddress) {
             this.brokerName = brokerName;
             this.brokerId = brokerId;
             this.brokerAddress = brokerAddress;
+            this.alive = false;
+        }
+
+        public ReplicaIdentity(String brokerName, Long brokerId, String brokerAddress, Boolean alive) {
+            this.brokerName = brokerName;
+            this.brokerId = brokerId;
+            this.brokerAddress = brokerAddress;
+            this.alive = alive;
         }
 
         public String getBrokerName() {
@@ -164,11 +172,11 @@ public class BrokerReplicasInfo extends RemotingSerializable  {
         }
 
         public Boolean getAlive() {
-            return isAlive;
+            return alive;
         }
 
         public void setAlive(Boolean alive) {
-            isAlive = alive;
+            this.alive = alive;
         }
 
         @Override
@@ -177,7 +185,7 @@ public class BrokerReplicasInfo extends RemotingSerializable  {
                     "brokerName='" + brokerName + '\'' +
                     ", brokerId=" + brokerId +
                     ", brokerAddress='" + brokerAddress + '\'' +
-                    ", isAlive=" + isAlive +
+                    ", alive=" + alive +
                     '}';
         }