diff --git a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
index 80d3fc645da9d..7f7ff69f2a825 100644
--- a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
+++ b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
@@ -1404,10 +1404,6 @@ public void updateRates(NamespaceStats nsStats, NamespaceBundleStats bundleStats
             topicStatsStream.endObject();
 
             nsStats.msgReplBacklog += rStat.replicationBacklog;
-            // replication delay for a namespace is the max repl-delay among all the topics under this namespace
-            if (rStat.replicationDelayInSeconds > nsStats.maxMsgReplDelayInSeconds) {
-                nsStats.maxMsgReplDelayInSeconds = rStat.replicationDelayInSeconds;
-            }
 
             if (replStats.isMetricsEnabled()) {
                 String namespaceClusterKey = replStats.getKeyName(namespace, cluster);
@@ -1424,6 +1420,10 @@ public void updateRates(NamespaceStats nsStats, NamespaceBundleStats bundleStats
                 if (update) {
                     replStats.put(namespaceClusterKey, replicationMetrics);
                 }
+                // replication delay for a namespace is the max repl-delay among all the topics under this namespace
+                if (rStat.replicationDelayInSeconds > replicationMetrics.maxMsgReplDelayInSeconds) {
+                    replicationMetrics.maxMsgReplDelayInSeconds = rStat.replicationDelayInSeconds;
+                }
             }
         });
 
diff --git a/pulsar-broker/src/main/java/org/apache/pulsar/broker/stats/ReplicationMetrics.java b/pulsar-broker/src/main/java/org/apache/pulsar/broker/stats/ReplicationMetrics.java
index dbdefa0d21397..0d675a0b54cd4 100644
--- a/pulsar-broker/src/main/java/org/apache/pulsar/broker/stats/ReplicationMetrics.java
+++ b/pulsar-broker/src/main/java/org/apache/pulsar/broker/stats/ReplicationMetrics.java
@@ -33,6 +33,7 @@ public class ReplicationMetrics {
     public double msgRateOut;
     public double msgThroughputOut;
     public double msgReplBacklog;
+    public double maxMsgReplDelayInSeconds;
     public int connected;
 
     public void reset() {
@@ -40,6 +41,7 @@ public void reset() {
         msgThroughputOut = 0;
         msgReplBacklog = 0;
         connected = 0;
+        maxMsgReplDelayInSeconds = 0;
     }
 
     public static ReplicationMetrics get() {
@@ -81,6 +83,7 @@ public Metrics add(String namespace, String local, String remote) {
         dMetrics.put("brk_repl_out_tp_rate", msgThroughputOut);
         dMetrics.put("brk_replication_backlog", msgReplBacklog);
         dMetrics.put("brk_repl_is_connected", connected);
+        dMetrics.put("brk_max_replication_delay_second", maxMsgReplDelayInSeconds);
 
         return dMetrics;