fix not update LastDataMessagePublishedTimestamp.

Author: thetumbled

pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java

@@ -54,6 +54,7 @@
 import java.util.stream.Collectors;
 import javax.annotation.Nonnull;
 import lombok.Getter;
+import lombok.Setter;
 import lombok.Value;
 import org.apache.bookkeeper.client.api.LedgerMetadata;
 import org.apache.bookkeeper.mledger.AsyncCallbacks;
@@ -269,6 +270,7 @@ protected TopicStatsHelper initialValue() {
 
     // Record the last time a data message (ie: not an internal Pulsar marker) is published on the topic
     @Getter
+    @Setter
     private volatile long lastDataMessagePublishedTimestamp = 0;
     @Getter
     private final ExecutorService orderedExecutor;

pulsar-broker/src/main/java/org/apache/pulsar/broker/transaction/buffer/impl/TopicTransactionBuffer.java

@@ -23,6 +23,8 @@
 import io.netty.util.Timeout;
 import io.netty.util.Timer;
 import io.netty.util.TimerTask;
+
+import java.time.Clock;
 import java.util.List;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ConcurrentHashMap;
@@ -321,6 +323,8 @@ public void addComplete(Position position, ByteBuf entryData, Object ctx) {
                         }
                         txnCommittedCounter.increment();
                         completableFuture.complete(null);
+                        // need to update the last data message published timestamp
+                        topic.setLastDataMessagePublishedTimestamp(Clock.systemUTC().millis());
                     }
 
                     @Override