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https://issues.apache.org/jira/browse/CAMEL-24523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18115909#comment-18115909
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Claus Ibsen commented on CAMEL-24523:
-------------------------------------
Merged in https://github.com/apache/camel/pull/26476 (commit 737ed0f5b35b) by
nkokitkar: the Paho consumer restarts its route when the resubscribe after a
reconnect fails, mirroring the camel-paho-mqtt5 recovery of CAMEL-24511.
Documented in the 4.23 upgrade guide.
_Claude Code on behalf of davsclaus_
> camel-paho - Consumer silently stops receiving messages when resubscribe
> fails and route remains in Started state
> -----------------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-24523
> URL: https://issues.apache.org/jira/browse/CAMEL-24523
> Project: Camel
> Issue Type: Bug
> Components: camel-paho
> Reporter: Jinyu Chen
> Assignee: NMK
> Priority: Minor
> Fix For: 4.23.0
>
>
> When automaticReconnect=true and the MQTT broker reconnects, if the
> post-reconnect subscribe() call fails (e.g., broker does not send SUBACK,
> causing MqttException 32000 after keepAlive timeout), the consumer only logs
> the error at ERROR level but takes no recovery action. The route remains in
> Started state while silently consuming no messages (zombie state).
> This is the MQTT3 counterpart of CAMEL-24511 (camel-paho-mqtt5). The same gap
> exists in PahoConsumer.connectComplete(). However, this component has been
> deprecated since 4.21 as the underlying Paho mqtt3 client has had no new
> release since 2020. Users are encouraged to migrate to camel-paho-mqtt5.
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