Hi,
In the sample both messages are sent from the same context to the same
receiver, so they will be received in-order.
Tal
On Tuesday, September 6, 2016 at 7:12:32 PM UTC+3, que...@gmail.com wrote:
>
> The order that they are received would be the critical thing, I would
> think. So, is the example not dealing with the possibility that the
> messages could be received out of order? Or, is this somehow taken care of?
>
> Kendall
>
> On Monday, September 5, 2016 at 2:40:34 AM UTC-7, Tal Pressman wrote:
>>
>> Hi,
>>
>> Message ordering is preserved between a sender-receiver pair. However,
>> this refers to the actual actual actor sending the message, regardless of
>> the ActorRef passed as the sender reference.
>> In the example above, both messages are being sent from the same context,
>> and therefor should be sent in-order.
>>
>> Tal
>>
>>
>> On Saturday, September 3, 2016 at 8:19:33 AM UTC+3, que...@gmail.com
>> wrote:
>>>
>>> I'm early in learning Akka. The hello-akka-java8 tutorial has
>>> greeter.tell from no actor, followed by inbox.send:
>>>
>>> final ActorRef greeter = system.actorOf(Props.create(Greeter.class),
>>> "greeter");
>>> final Inbox inbox = Inbox.create(system);
>>> greeter.tell(new WhoToGreet("akka"), ActorRef.noSender());
>>> inbox.send(greeter, new Greet());
>>> Greeting greeting1 = (Greeting) inbox.receive(Duration.create(5,
>>> TimeUnit.SECONDS));
>>>
>>> Can I expect that the greeter actor is going to process new
>>> WhoToGreet("akka"), before new Greet()?
>>>
>>> If so, why?
>>>
>>> I read in Akka documentation:
>>>
>>> "*...for a given pair of actors, messages sent directly from the first
>>> to the second will not be received out-of-order.* The word *directly*
>>> emphasizes
>>> that this guarantee only applies when sending with the telloperator to
>>> the final destination, not when employing mediators or other message
>>> dissemination features (unless stated otherwise)."
>>>
>>> I think the tutorial is not sending messages from one actor.
>>>
>>>
>>>
--
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>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
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