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Merge pull request #1864 from akka/wip-creation-ordering-∂π

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=doc #3763 add actor creation ordering guarantees
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Patrik Nordwall 2013-12-16 00:04:49 -08:00
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akka-docs/rst/general/message-delivery-guarantees.rst
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@ -155,6 +155,17 @@ Causal transitive ordering would imply that ``M2`` is never received before
violated due to different message delivery latencies when ``A``, ``B`` and
``C`` reside on different network hosts, see more below.
.. note::
Actor creation is treated as a message sent from the parent to the child,
with the same semantics as discussed above. Sending a message to an actor in
a way which could be reordered with this initial creation message means that
the message might not arrive because the actor does not exist yet. An example
where the message might arrive too early would be to create a remote-deployed
actor R1, send its reference to another remote actor R2 and have R2 send a
message to R1. An example of well-defined ordering is a parent which creates
an actor and immediately sends a message to it.
Communication of failure
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