Hi,

I am having an issue with the PersistentChannel. I use the channel for 
persistent re-sending of messages to a camel endpoint.
I basically send the message through the channel to an actor, have this 
actor use ask to send the request to a camel producer actor, and handle the 
response using map on the future I get back from ask. I confirm the message 
once I receive the response.
In my unit tests this works fine for the first run without a journal 
directory. The second run is also fine, I set the akka loglevel to debug, 
both log outputs are pretty much equal. The third run, however, will fail 
as messages from the second run are now redelivered.
I use PersistentChannels in other parts as well, and have no issues there, 
so I suspect this might have to do with the ask pattern somehow.

In pseudish code, this is a simple version of what I do:

ConfirmablePersistent msg = ...
Future future = Patterns.ask(producer, msg.payload(), timeout);
future.map(... apply(response) {
  msg.confirm();
  return response;
}, getContext().dispatcher());

Mostly I tested this with 2.3.0-RC4, but I also gave it a run with the 
newly released 2.3.0. 

I will try to write a simple test in the akka codebase to reproduce this, 
but perhaps someone already has some helpful ideas in the meantime?

Cheers,
Michael

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