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https://issues.apache.org/jira/browse/CAMEL-14590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17040117#comment-17040117
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Connor McAuliffe commented on CAMEL-14590:
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To expand a little on the pulsar side of this:
In the lifecycle of the subscription according to pulsar, "Subscriptions can be
dropped by explicitly unsubscribing (in {{Consumer}} API) or through the
REST/CLI"
[https://github.com/apache/pulsar/blob/master/faq.md#what-is-the-lifecycle-of-subscription]
In persistent subscriptions, unsubscribe calls delete on the subscription if
the consumer is the last consumer
[https://github.com/apache/pulsar/blob/2e30c086b2461531c62164d09ea148928a0e3ae6/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentSubscription.java#L889]
So calling unsubscribe is basically like deleting the subscription, and not
removing the consumer from the subscription
> Camel-Pulsar consumer calls unsubscribe on doStop/doSuspend, potentially
> deleting subscription
> ----------------------------------------------------------------------------------------------
>
> Key: CAMEL-14590
> URL: https://issues.apache.org/jira/browse/CAMEL-14590
> Project: Camel
> Issue Type: Bug
> Components: camel-pulsar
> Reporter: Connor McAuliffe
> Priority: Major
>
> In the PulsarUtils [stopConsumers
> method|https://github.com/apache/camel/blob/master/components/camel-pulsar/src/main/java/org/apache/camel/component/pulsar/utils/PulsarUtils.java]
> all the consumers call unsubscribe(). This causes the subscription to be
> deleted if this call comes from the last consumer. I do not know if this is
> intentional behavior but it seems to be dangerous (and has caused some issues
> for us without realizing it). If this is intentional, can we make it
> configurable to avoid doing this? Or if it is not intentional can we just
> remove the call entirely?
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