Spring Integration MQTT Subscriber (paho) stops processing messages

Question

We\'re experiencing an issue with one of our MQTT subscribers in Spring integration (4.0.3.RELEASE running on Tomcat 7 with the Paho MQTT Client 0.4.0).

The issue i

Answer 1

First of all share, please, the versions of Spring Integration and Paho Client.

According to the after doing a couple of redeploys I see this code from CommsReceiver#.stop():

if (!Thread.currentThread().equals(recThread)) {
    try {
        // Wait for the thread to finish.
        recThread.join();
    }
    catch (InterruptedException ex) {
    }
}

Where Thread.join():

* Waits for this thread to die.

I'm really not sure what it means and how it should go further on that wait, but won't the redeploy be a bottleneck to allow for those daemons to continue to live, because the main Thread doesn't die?