lifepuzzlefun commented on code in PR #20086:
URL: https://github.com/apache/pulsar/pull/20086#discussion_r1166912389


##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/delayed/bucket/BucketDelayedDeliveryTracker.java:
##########
@@ -567,26 +574,19 @@ public synchronized NavigableSet<PositionImpl> 
getScheduledMessages(int maxMessa
                     log.debug("[{}] Loading next bucket snapshot segment, 
bucketKey: {}, nextSegmentEntryId: {}",
                             dispatcher.getName(), bucket.bucketKey(), 
preSegmentEntryId + 1);
                 }
-                // All message of current snapshot segment are scheduled, load 
next snapshot segment
-                // TODO make it asynchronous and not blocking this process
-                try {
-                    boolean createFutureDone = 
bucket.getSnapshotCreateFuture().orElse(NULL_LONG_PROMISE).isDone();
-
-                    if (!createFutureDone) {
-                        log.info("[{}] Skip load to wait for bucket snapshot 
create finish, bucketKey:{}",
-                                dispatcher.getName(), bucket.bucketKey());
-                        break;
-                    }
-
-                    if (bucket.currentSegmentEntryId == 
bucket.lastSegmentEntryId) {
-                        
immutableBuckets.asMapOfRanges().remove(Range.closed(bucket.startLedgerId, 
bucket.endLedgerId));
-                        bucket.asyncDeleteBucketSnapshot(stats);
-                        continue;
-                    }
+                boolean createFutureDone = 
bucket.getSnapshotCreateFuture().orElse(NULL_LONG_PROMISE).isDone();
+                if (!createFutureDone) {
+                    log.info("[{}] Skip load to wait for bucket snapshot 
create finish, bucketKey:{}",
+                            dispatcher.getName(), bucket.bucketKey());
+                    break;
+                }
 
-                    long loadStartTime = System.currentTimeMillis();
-                    
stats.recordTriggerEvent(BucketDelayedMessageIndexStats.Type.load);
-                    
bucket.asyncLoadNextBucketSnapshotEntry().thenAccept(indexList -> {
+                long loadStartTime = System.currentTimeMillis();
+                
stats.recordTriggerEvent(BucketDelayedMessageIndexStats.Type.load);
+                CompletableFuture<Void> loadFuture = pendingLoad = 
bucket.asyncLoadNextBucketSnapshotEntry()

Review Comment:
   can this line split into multi line ? 



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