[openstack-dev] [Mistral] Refine engine <-> executor protocol

W Chan m4d.coder at gmail.com
Fri Jun 6 16:12:40 UTC 2014


Renat,

Regarding blueprint
https://blueprints.launchpad.net/mistral/+spec/mistral-engine-executor-protocol,
can you clarify what it means by worker parallelism and
engine-executor parallelism?
 Currently, the engine and executor are launched with the eventlet driver
in oslo.messaging.  Once a message arrives over transport, a new green
thread is spawned and passed to the dispatcher.  In the case of executor,
the function being dispatched to is handle_task.  I'm unclear what
additional parallelism this blueprint is referring to.  The context isn't
clear from the summit notes.

Thanks.
Winson
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