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[To dev/1.3] Subscription: return immediately when unsubscribe empty complete topics (#15770) #15781

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Merged
SteveYurongSu merged 1 commit into from
Jun 19, 2025
Merged

[To dev/1.3] Subscription: return immediately when unsubscribe empty complete topics (#15770) #15781

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6 changes: 6 additions & 0 deletions ...anode/src/main/java/org/apache/iotdb/db/subscription/receiver/SubscriptionReceiverV1.java
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Original file line number Diff line number Diff line change
Expand Up @@ -703,6 +703,12 @@ private void unsubscribeCompleteTopics(final ConsumerConfig consumerConfig) {
final List<String> topicNamesToUnsubscribe =
SubscriptionAgent.broker().fetchTopicNamesToUnsubscribe(consumerConfig, topics.keySet());

// If it is empty, it could be that the consumer has been closed, or there are no completed
// topics. In this case, it should immediately return.
if (topicNamesToUnsubscribe.isEmpty()) {
return;
}

unsubscribe(consumerConfig, new HashSet<>(topicNamesToUnsubscribe));
LOGGER.info(
"Subscription: consumer {} unsubscribe {} (completed topics) successfully",
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