Thanks to both of you.
@David Idempotence (and functional style) will both mitigate the issue of
testing.
@Sharma #3 looks impressive and I hear the pain. Few questions:
* Since you already have the state machine modeling, can't the scheduler
actions also be modeled as a state machine
@Sharma #3 looks impressive and I hear the pain. Few questions:
* Since you already have the state machine modeling, can't the scheduler
actions also be modeled as a state machine transitions?
I suppose that is possible in theory. I am thinking that the scheduler
state will have to be a
Hi,
I am working on a tiny experimental framework for Mesos. I was wondering
what is the recommended way of writing testcases for framework testing. I
looked at the several existing frameworks, but its still not clear to me. I
understand that I might be able to test executor functionality in
For our frameworks, we don't tend to do much automated testing of the Mesos
interface--instead, we construct the framework state, then send it a
message, since our callbacks take the state of the framework + the event
as the argument. This way, we don't need to have mesos running, and we can
trim
Thanks David.
Taking state of the framework is an interesting design. I am assuming the
scheduler is maintaining the state and then handing tasks on slaves. If
that's the case, we can safely test executor (stateless - receiving event
and returning appropriate status to the scheduler). You
Trying to test the framework in an automated way, I tend to think of the
framework in these parts:
1. Executor
2. Scheduler's interaction with Mesos and state persistence
3. Scheduler's task assignment of resources
I will skip #1, you covered that already and it depends largely on the kind
of
Specifically with regards to the state of the framework due to callback
ordering, we ensure that our framework is written in a functional style, so
that all callbacks atomically transform the previous state to a new state.
By doing this, we serialize all callbacks. At this point, you can do
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