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Posted to user@storm.apache.org by "Nick R. Katsipoulakis" <ni...@gmail.com> on 2016/03/09 22:02:15 UTC
Difference between an assignable and an available slot
Hello all,
I was going through the backtype.storm.scheduler package and I came across
class Cluster. What is the difference between the following two methods:
Cluster.getAssignableSlots(SupervisorDetails supervisor) and
Cluster.getAvailableSlots(SupervisorDetails supervisor)
Also, if an executor thread is assigned to a WorkerSlot returned by
getAvailableSlots(), can another executor thread be assigned to the same
WorkerSlot returned by the getAssignableSlots()?
Thanks,
Nick
Re: Difference between an assignable and an available slot
Posted by Rudraneel chakraborty <ru...@gmail.com>.
Yeah , a slot is basically a worker process exposed by a supervisor daemon
running on some node
On Wednesday, 9 March 2016, Nick R. Katsipoulakis <ni...@gmail.com>
wrote:
> Hello Rudraneel and thank you for your timely response!
>
> So, from what I understand, the answer to my question is yes. Also, in the
> documentation jargon, a "slot" translates to a worker process, right?
>
> Thank you again!
>
> Cheers,
> Nick
>
> On Wed, Mar 9, 2016 at 4:04 PM, Rudraneel chakraborty <
> rudraneel.chakraborty@gmail.com
> <javascript:_e(%7B%7D,'cvml','rudraneel.chakraborty@gmail.com');>> wrote:
>
>> You can assign executors of the same topology in a worker process. For an
>> example if a topology has 10 executors , you can assign all of them in a
>> single worker slot
>>
>>
>> On Wednesday, 9 March 2016, Nick R. Katsipoulakis <nick.katsip@gmail.com
>> <javascript:_e(%7B%7D,'cvml','nick.katsip@gmail.com');>> wrote:
>>
>>> Hello all,
>>>
>>> I was going through the backtype.storm.scheduler package and I came
>>> across class Cluster. What is the difference between the following two
>>> methods:
>>>
>>> Cluster.getAssignableSlots(SupervisorDetails supervisor) and
>>>
>>> Cluster.getAvailableSlots(SupervisorDetails supervisor)
>>>
>>> Also, if an executor thread is assigned to a WorkerSlot returned by
>>> getAvailableSlots(), can another executor thread be assigned to the same
>>> WorkerSlot returned by the getAssignableSlots()?
>>>
>>> Thanks,
>>> Nick
>>>
>>
>>
>> --
>> Rudraneel Chakraborty
>> Carleton University Real Time and Distributed Systems Reserach
>>
>>
>
>
> --
> Nick R. Katsipoulakis,
> Department of Computer Science
> University of Pittsburgh
>
--
Rudraneel Chakraborty
Carleton University Real Time and Distributed Systems Reserach
Re: Difference between an assignable and an available slot
Posted by "Nick R. Katsipoulakis" <ni...@gmail.com>.
Hello Rudraneel and thank you for your timely response!
So, from what I understand, the answer to my question is yes. Also, in the
documentation jargon, a "slot" translates to a worker process, right?
Thank you again!
Cheers,
Nick
On Wed, Mar 9, 2016 at 4:04 PM, Rudraneel chakraborty <
rudraneel.chakraborty@gmail.com> wrote:
> You can assign executors of the same topology in a worker process. For an
> example if a topology has 10 executors , you can assign all of them in a
> single worker slot
>
>
> On Wednesday, 9 March 2016, Nick R. Katsipoulakis <ni...@gmail.com>
> wrote:
>
>> Hello all,
>>
>> I was going through the backtype.storm.scheduler package and I came
>> across class Cluster. What is the difference between the following two
>> methods:
>>
>> Cluster.getAssignableSlots(SupervisorDetails supervisor) and
>>
>> Cluster.getAvailableSlots(SupervisorDetails supervisor)
>>
>> Also, if an executor thread is assigned to a WorkerSlot returned by
>> getAvailableSlots(), can another executor thread be assigned to the same
>> WorkerSlot returned by the getAssignableSlots()?
>>
>> Thanks,
>> Nick
>>
>
>
> --
> Rudraneel Chakraborty
> Carleton University Real Time and Distributed Systems Reserach
>
>
--
Nick R. Katsipoulakis,
Department of Computer Science
University of Pittsburgh
Re: Difference between an assignable and an available slot
Posted by Rudraneel chakraborty <ru...@gmail.com>.
You can assign executors of the same topology in a worker process. For an
example if a topology has 10 executors , you can assign all of them in a
single worker slot
On Wednesday, 9 March 2016, Nick R. Katsipoulakis <ni...@gmail.com>
wrote:
> Hello all,
>
> I was going through the backtype.storm.scheduler package and I came across
> class Cluster. What is the difference between the following two methods:
>
> Cluster.getAssignableSlots(SupervisorDetails supervisor) and
>
> Cluster.getAvailableSlots(SupervisorDetails supervisor)
>
> Also, if an executor thread is assigned to a WorkerSlot returned by
> getAvailableSlots(), can another executor thread be assigned to the same
> WorkerSlot returned by the getAssignableSlots()?
>
> Thanks,
> Nick
>
--
Rudraneel Chakraborty
Carleton University Real Time and Distributed Systems Reserach