@RunLLM I've set

subscriptionExpirationTimeMinutes

in broker.conf but unactive subscriptions wasn't deleted. Pulsar 4.0.4. What should I do, for auto cleanup subscriptions without active consumers?

Setting

subscriptionExpirationTimeMinutes

in

broker.conf

enables automatic deletion of inactive subscriptions, but this only works for topics that are currently loaded in the broker's memory. If a topic is not loaded (no recent activity), the broker will not check or delete its inactive subscriptions until the topic is reloaded (e.g., by publishing or consuming a message) (GitHub Issue #19968). This is a known limitation and there is no broker setting to force periodic loading of all topics for cleanup. Would you like more detail on workarounds or internal logic? Sources: - GitHub Issue #19968 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@RunLLM So, if will be any actions in topic, subscriptions will be deleted?

Yes, if there is any activity on the topic (such as publishing or consuming a message), the topic will be loaded into broker memory, and the subscription expiration check will run. If the subscription has been inactive longer than

subscriptionExpirationTimeMinutes

, it will be deleted (GitHub Issue #19968). Would you like more detail on the exact logic or configuration? Sources: - GitHub Issue #19968 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@RunLLM setted params

subscriptionExpirationTimeMinutes=5
subscriptionExpiryCheckIntervalInMinutes=1

If there was no action within the subscription, it will not be deleted as well?

Correct. If there is no activity on the topic (no producers or consumers connecting), the topic may not be loaded in broker memory, so the subscription expiration check will not run and the inactive subscription will not be deleted—even with your settings (GitHub Issue #19968). Would you like more detail on possible workarounds or internal behavior? Sources: - GitHub Issue #19968 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@RunLLM broker Config

subscriptionExpirationTimeMinutes=5
subscriptionExpiryCheckIntervalInMinutes=1

stats

k8s-pulsar-dev-broker-0:/pulsar$ ./bin/pulsar-admin topics stats <persistent://server_smakaravets/toll_gates_cache/global>
{
  "msgRateIn" : 0.0,
  "msgThroughputIn" : 0.0,
  "msgRateOut" : 0.0,
  "msgThroughputOut" : 0.0,
  "bytesInCounter" : 150,
  "msgInCounter" : 3,
  "systemTopicBytesInCounter" : 0,
  "bytesOutCounter" : 13200,
  "msgOutCounter" : 264,
  "bytesOutInternalCounter" : 0,
  "averageMsgSize" : 0.0,
  "msgChunkPublished" : false,
  "storageSize" : 150,
  "backlogSize" : 150,
  "backlogQuotaLimitSize" : -1,
  "backlogQuotaLimitTime" : -1,
  "oldestBacklogMessageAgeSeconds" : -1,
  "publishRateLimitedTimes" : 0,
  "earliestMsgPublishTimeInBacklogs" : 0,
  "offloadedStorageSize" : 0,
  "lastOffloadLedgerId" : 0,
  "lastOffloadSuccessTimeStamp" : 0,
  "lastOffloadFailureTimeStamp" : 0,
  "ongoingTxnCount" : 0,
  "abortedTxnCount" : 0,
  "committedTxnCount" : 0,
  "publishers" : [ ],
  "waitingPublishers" : 0,
  "subscriptions" : {
    "eaa16c41-5248-44f9-bb90-8eb0d162de00" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 13150,
      "msgOutCounter" : 263,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 3,
      "backlogSize" : 150,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 3,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "Exclusive",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 1751040069465,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 0,
      "consumers" : [ ],
      "isDurable" : true,
      "isReplicated" : true,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "replicated" : true,
      "durable" : true
    },
    "test" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 50,
      "msgOutCounter" : 1,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 1,
      "backlogSize" : 50,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 1,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "Exclusive",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 1751039943370,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 1751039979675,
      "consumers" : [ ],
      "isDurable" : true,
      "isReplicated" : false,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "replicated" : false,
      "durable" : true
    },
    "82af7147-ffb6-416f-857f-6dd61eddc49e" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 0,
      "msgOutCounter" : 0,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 3,
      "backlogSize" : 150,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 3,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "None",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 0,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 0,
      "consumers" : [ ],
      "isDurable" : true,
      "isReplicated" : true,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "replicated" : true,
      "durable" : true
    },
    "e5ce8be7-d0bb-4e92-8bdb-eb2d94e8e3c2" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 0,
      "msgOutCounter" : 0,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 3,
      "backlogSize" : 150,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 3,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "None",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 0,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 0,
      "consumers" : [ ],
      "isDurable" : true,
      "isReplicated" : true,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "replicated" : true,
      "durable" : true
    },
    "f06584b0-ded7-4fe9-9d5c-b5acbd46bec7" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 0,
      "msgOutCounter" : 0,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 3,
      "backlogSize" : 150,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 3,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "None",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 0,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 0,
      "consumers" : [ ],
      "isDurable" : true,
      "isReplicated" : true,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "replicated" : true,
      "durable" : true
    }
  "replication" : { },
  "deduplicationStatus" : "Disabled",
  "nonContiguousDeletedMessagesRanges" : 0,
  "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
  "delayedMessageIndexSizeInBytes" : 0,
  "compaction" : {
    "lastCompactionRemovedEventCount" : 0,
    "lastCompactionSucceedTimestamp" : 0,
    "lastCompactionFailedTimestamp" : 0,
    "lastCompactionDurationTimeInMills" : 0
  },
  "ownerBroker" : "k8s-pulsar-dev-broker-2.k8s-pulsar-dev-broker.pulsar-dev.svc.cluster.local:8080"
}

Subscriptions still exist

Your configuration is correct, but subscriptions will only be auto-deleted if the topic is loaded in broker memory and the expiration check runs. If the topic is idle and not loaded, the cleanup does not occur—even if

subscriptionExpirationTimeMinutes

and

subscriptionExpiryCheckIntervalInMinutes

are set (GitHub Issue #19968). In your stats, the topic is idle, so subscriptions remain. Would you like more detail on how to force cleanup or monitor topic loading? Sources: - GitHub Issue #19968 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@RunLLM does "ownerBroker" : "k8s-pulsar-dev-broker-2.k8s-pulsar-dev-broker.pulsar-dev.svc.cluster.local:8080" in topic stats says that this topic loaded?

No, the

ownerBroker

field in topic stats indicates which broker is responsible for the topic, but it does not guarantee the topic is currently loaded in broker memory. A topic can have an owner broker assigned but still be unloaded (not active in memory) (Pulsar topic stats docs, GitHub PR #17136). Would you like more detail on how to check if a topic is actually loaded? Sources: - Pulsar topic stats docs - GitHub PR #17136 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@RunLLM how can I activate topic?

To activate (load) a topic in Pulsar, you can publish a message to it or create a consumer/producer for the topic. Any client interaction will cause the broker to load the topic into memory (GitHub Issue #19968, Pulsar Java client usage). Would you like a code example for producing or consuming to trigger topic activation? Sources: - GitHub Issue #19968 - Pulsar Java client usage 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@RunLLM as you can see, one subscription has consumer "test" : { "msgRateOut" : 0.0, "msgThroughputOut" : 0.0, "bytesOutCounter" : 50, "msgOutCounter" : 1, "msgRateRedeliver" : 0.0, "messageAckRate" : 0.0, "chunkedMessageRate" : 0.0, "msgBacklog" : 0, "backlogSize" : 0, "earliestMsgPublishTimeInBacklog" : 0, "msgBacklogNoDelayed" : 0, "blockedSubscriptionOnUnackedMsgs" : false, "msgDelayed" : 0, "msgInReplay" : 0, "unackedMessages" : 0, "type" : "Exclusive", "activeConsumerName" : "3ouQl", "msgRateExpired" : 0.0, "totalMsgExpired" : 0, "lastExpireTimestamp" : 0, "lastConsumedFlowTimestamp" : 1751041915097, "lastConsumedTimestamp" : 0, "lastAckedTimestamp" : 0, "lastMarkDeleteAdvancedTimestamp" : 1751041769802, "consumers" : [ { "msgRateOut" : 0.0, "msgThroughputOut" : 0.0, "bytesOutCounter" : 0, "msgOutCounter" : 0, "msgRateRedeliver" : 0.0, "messageAckRate" : 0.0, "chunkedMessageRate" : 0.0, "consumerName" : "3ouQl", "availablePermits" : 1000, "unackedMessages" : 0, "avgMessagesPerEntry" : 0, "blockedConsumerOnUnackedMsgs" : false, "drainingHashesCount" : 0, "drainingHashesClearedTotal" : 0, "drainingHashesUnackedMessages" : 0, "address" : "/10.233.118.166:52092", "connectedSince" : "2025-06-27T163155.096010768Z", "clientVersion" : "Pulsar-Java-v4.0.4", "lastAckedTimestamp" : 0, "lastConsumedTimestamp" : 0, "lastConsumedFlowTimestamp" : 1751041915097, "metadata" : { }, "lastAckedTime" : "1970-01-01T000000Z", "lastConsumedTime" : "1970-01-01T000000Z" } ], "isDurable" : true, "isReplicated" : false, "allowOutOfOrderDelivery" : false, "consumersAfterMarkDeletePosition" : { }, "drainingHashesCount" : 0, "drainingHashesClearedTotal" : 0, "drainingHashesUnackedMessages" : 0, "nonContiguousDeletedMessagesRanges" : 0, "nonContiguousDeletedMessagesRangesSerializedSize" : 0, "delayedMessageIndexSizeInBytes" : 0, "subscriptionProperties" : { }, "filterProcessedMsgCount" : 0, "filterAcceptedMsgCount" : 0, "filterRejectedMsgCount" : 0, "filterRescheduledMsgCount" : 0, "dispatchThrottledMsgEventsBySubscriptionLimit" : 0, "dispatchThrottledBytesEventsBySubscriptionLimit" : 0, "dispatchThrottledMsgEventsByTopicLimit" : 0, "dispatchThrottledBytesEventsByTopicLimit" : 0, "dispatchThrottledMsgEventsByBrokerLimit" : 0, "dispatchThrottledBytesEventsByBrokerLimit" : 0, "durable" : true, "replicated" : false }, other doesnt have. and subscriptions stil exists

Subscriptions with an active consumer (as shown in your "test" subscription) will not be deleted by the auto-expiration mechanism. Only subscriptions without any connected consumers and that have been inactive for longer than

subscriptionExpirationTimeMinutes

are eligible for automatic deletion (GitHub Issue #19968). Would you like more detail on how the expiration logic works for subscriptions without consumers? Sources: - GitHub Issue #19968 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@RunLLM what about this subscriptions?

"subscriptions" : {
    "eaa16c41-5248-44f9-bb90-8eb0d162de00" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 81800,
      "msgOutCounter" : 1636,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 4,
      "backlogSize" : 200,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 4,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "Exclusive",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 1751042211692,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 0,
      "consumers" : [ ],
      "isDurable" : true,
      "isReplicated" : true,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "durable" : true,
      "replicated" : true
    },
    "test" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 50,
      "msgOutCounter" : 1,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 0,
      "backlogSize" : 0,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 0,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "Exclusive",
      "activeConsumerName" : "3ouQl",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 1751041915097,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 1751041769802,
      "consumers" : [ {
        "msgRateOut" : 0.0,
        "msgThroughputOut" : 0.0,
        "bytesOutCounter" : 0,
        "msgOutCounter" : 0,
        "msgRateRedeliver" : 0.0,
        "messageAckRate" : 0.0,
        "chunkedMessageRate" : 0.0,
        "consumerName" : "3ouQl",
        "availablePermits" : 1000,
        "unackedMessages" : 0,
        "avgMessagesPerEntry" : 0,
        "blockedConsumerOnUnackedMsgs" : false,
        "drainingHashesCount" : 0,
        "drainingHashesClearedTotal" : 0,
        "drainingHashesUnackedMessages" : 0,
        "address" : "/10.233.118.166:52092",
        "connectedSince" : "2025-06-27T16:31:55.096010768Z",
        "clientVersion" : "Pulsar-Java-v4.0.4",
        "lastAckedTimestamp" : 0,
        "lastConsumedTimestamp" : 0,
        "lastConsumedFlowTimestamp" : 1751041915097,
        "metadata" : { },
        "lastAckedTime" : "1970-01-01T00:00:00Z",
        "lastConsumedTime" : "1970-01-01T00:00:00Z"
      } ],
      "isDurable" : true,
      "isReplicated" : false,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "durable" : true,
      "replicated" : false
    },
    "82af7147-ffb6-416f-857f-6dd61eddc49e" : {
      "msgRateOut" : 0.0,
      "msgThroughputOut" : 0.0,
      "bytesOutCounter" : 0,
      "msgOutCounter" : 0,
      "msgRateRedeliver" : 0.0,
      "messageAckRate" : 0.0,
      "chunkedMessageRate" : 0.0,
      "msgBacklog" : 4,
      "backlogSize" : 200,
      "earliestMsgPublishTimeInBacklog" : 0,
      "msgBacklogNoDelayed" : 4,
      "blockedSubscriptionOnUnackedMsgs" : false,
      "msgDelayed" : 0,
      "msgInReplay" : 0,
      "unackedMessages" : 0,
      "type" : "None",
      "msgRateExpired" : 0.0,
      "totalMsgExpired" : 0,
      "lastExpireTimestamp" : 0,
      "lastConsumedFlowTimestamp" : 0,
      "lastConsumedTimestamp" : 0,
      "lastAckedTimestamp" : 0,
      "lastMarkDeleteAdvancedTimestamp" : 0,
      "consumers" : [ ],
      "isDurable" : true,
      "isReplicated" : true,
      "allowOutOfOrderDelivery" : false,
      "consumersAfterMarkDeletePosition" : { },
      "drainingHashesCount" : 0,
      "drainingHashesClearedTotal" : 0,
      "drainingHashesUnackedMessages" : 0,
      "nonContiguousDeletedMessagesRanges" : 0,
      "nonContiguousDeletedMessagesRangesSerializedSize" : 0,
      "delayedMessageIndexSizeInBytes" : 0,
      "subscriptionProperties" : { },
      "filterProcessedMsgCount" : 0,
      "filterAcceptedMsgCount" : 0,
      "filterRejectedMsgCount" : 0,
      "filterRescheduledMsgCount" : 0,
      "dispatchThrottledMsgEventsBySubscriptionLimit" : 0,
      "dispatchThrottledBytesEventsBySubscriptionLimit" : 0,
      "dispatchThrottledMsgEventsByTopicLimit" : 0,
      "dispatchThrottledBytesEventsByTopicLimit" : 0,
      "dispatchThrottledMsgEventsByBrokerLimit" : 0,
      "dispatchThrottledBytesEventsByBrokerLimit" : 0,
      "durable" : true,
      "replicated" : true
    },

Subscriptions like

"eaa16c41-5248-44f9-bb90-8eb0d162de00"

and

"82af7147-ffb6-416f-857f-6dd61eddc49e"

have no active consumers (

"consumers": <https://github.com/apache/pulsar/issues/19968|]

). These are eligible for auto-deletion if they remain inactive for longer than

subscriptionExpirationTimeMinutes

and the topic is loaded in broker memory ([GitHub Issue #19968>). If they are not being deleted, it is likely because the topic is not loaded or the expiration check has not run since they became inactive. Would you like more detail on how to force the expiration check or confirm topic loading? Sources: - GitHub Issue #19968 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.