315157973 commented on code in PR #15628:
URL: https://github.com/apache/pulsar/pull/15628#discussion_r1007714935


##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentMessageExpiryMonitor.java:
##########
@@ -77,8 +77,10 @@ public boolean expireMessages(int messageTTLInSeconds) {
 
             
cursor.asyncFindNewestMatching(ManagedCursor.FindPositionConstraint.SearchActiveEntries,
 entry -> {
                 try {
-                    long entryTimestamp = 
Commands.getEntryTimestamp(entry.getDataBuffer());
-                    return MessageImpl.isEntryExpired(messageTTLInSeconds, 
entryTimestamp);
+                    // When the time of the delayed message is greater than 
the time specified by TTL, we should
+                    // give up checking the TTL of the current delayed 
message, because the time of the delayed
+                    // message has not yet arrived, we cannot delete these 
messages.
+                    return MessageImpl.isEntryExpired(messageTTLInSeconds, 
entry.getDataBuffer());

Review Comment:
   I feel that this is an expected behavior, it's better not to set TTL for 
topics that use delayed messages



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