gaoran10 commented on code in PR #19138:
URL: https://github.com/apache/pulsar/pull/19138#discussion_r1066610154
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pulsar-broker/src/main/java/org/apache/pulsar/broker/delayed/bucket/BucketDelayedDeliveryTracker.java:
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@@ -243,6 +263,53 @@ public synchronized boolean addMessage(long ledgerId, long
entryId, long deliver
return true;
}
+ private synchronized CompletableFuture<Void> asyncMergeBucketSnapshot() {
+ List<ImmutableBucket> values =
immutableBuckets.asMapOfRanges().values().stream().toList();
+ long minNumberMessages = Long.MAX_VALUE;
+ int minIndex = -1;
+ for (int i = 0; i + 1 < values.size(); i++) {
+ ImmutableBucket bucketL = values.get(i);
+ ImmutableBucket bucketR = values.get(i + 1);
+ long numberMessages = bucketL.numberBucketDelayedMessages +
bucketR.numberBucketDelayedMessages;
+ if (numberMessages < minNumberMessages) {
+ minNumberMessages = (int) numberMessages;
+ minIndex = i;
+ }
+ }
+ return asyncMergeBucketSnapshot(values.get(minIndex),
values.get(minIndex + 1));
Review Comment:
Must We merge buckets that are contiguous? Could we find the two smallest
buckets and merge them?
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