Re: [Artemis] Some data isn't delivered using Paho client

[Justin Bertram <jb...@apache.org>]

Can you work-up a test-case to reproduce the issue?  You could easily base
this on one of the MQTT examples we ship with the broker.


Justin

On Thu, Feb 1, 2018 at 5:17 AM, Dustbit <ti...@ceiia.com> wrote:

> Hello,
>
> I work with Raul and we found what was causing the problem.
>
> Problem and steps to reproduce:
>
> - Connect subscriber to broker (cleanSession=false)
> - Subscribe 3 topics (through 3 different calls using the same client)
> - Disconnect subscriber
> - Send 50k messages to the broker (broker holds messages as it's queues are
> durable)
> - Connect subscriber (with same clientId)
> - Subscribe the same 3 topics (through 3 different calls using the same
> client)
> - No pending messages are sent to the subscriber, even though they're in
> the
> queue
>
> When disconnecting the subscriber again some message were flushed, but
> reconnecting again resulted in the same stale situation.
> New messages arriving the broker were being sent just fine to all topics,
> only the ones already there were not sent.
>
> Cause:
> If instead of subscribing through 3 different calls for 3 different topics,
> we subscribe in 1 call with the 3 topics (as an array) everything works
> fine
> on reconnect.
>
> I think there's something wrong on the re-attach/reconnect logic that is
> causing this behavior, that's why when I was disconnecting (and
> unsubscribing) the 3 topics, when it reached 1 topic only the broker
> started
> sending the messages.
>
>
>
>
> --
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