Watching remote actors

[Joa Ebert]

Hey,

I have a question regarding remote actors and how I am supposed to handle the following case:

I have two JVMs A and B. A contains ref to an actor running in B. I try watching the ref using

context.watch(actorFromB) in an Actor that runs inside A.

However I am not getting any messages about failure when I kill B besides that an exception 

occurrs once I try start sending messages to the dead actor.

What am I doing wrong? Ideally I want to be able to react on the failure, and/or have messages

to the target actor being delivered with a specified retry/timeout just like the supervision strategies.

Best,

Joa

[√iktor Ҡlang]

Hey Joa,

this is currently not implemented, and will be a big part of what is
2.1 (clustering etc).
The problem is to decide when something is down permanently, and how
to react if the "failed" node can communicate with other nodes. You
essentially need some sort of gossip protocol that informs all nodes
on which nodes are considered alive or not. It's a well-known tricky
thing.

Cheers,
√

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Viktor Klang

Akka Tech Lead
Typesafe - The software stack for applications that scale

Twitter: @viktorklang

[Joa Ebert]

Hi Victor,

thanks for the fast answer. Of course it is not trivial.

That is why I was hoping Akka already solves this for me ;)

Cheers,

Joa

[√iktor Ҡlang]

Hi Joa,

Akka will solve that, but you'll have to hold out a tad bit longer.

In the meantime you can read the cluster spec:
http://akka.io/docs/akka/2.0-M4/cluster/cluster.html

Cheers!

√

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