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From Ashwin Chandra Putta <ashwinchand...@gmail.com>
Subject Re: Input Operator Question
Date Mon, 25 Jan 2016 22:58:23 GMT
Smith,

Within a yarn container, we can start multiple operators. Each such
operator runs in one thread. All the calls on the operator happen in that
thread. So the operator is not shared.

Regards,
Ashwin.

On Mon, Jan 25, 2016 at 2:33 PM, Smith, Kent <Kent.Smith2@capitalone.com>
wrote:

> Wait, additional newbee question.  So an Operator runs in own thread.  Do
> you mean a given Operator is shared or could multiple threads, external to
> the Operator thread call the same operator and each get an operator thread
> of their own (within their context) or would each thread call within the
> Operator thread one at a time so each context shares the Operator thread?
>
> Thanks.
>
> -----Original Message-----
> From: Bryan Bende [mailto:bbende@gmail.com]
> Sent: Monday, January 25, 2016 5:27 PM
> To: dev@apex.incubator.apache.org
> Subject: Re: Input Operator Question
>
> Thanks! Appreciate the quick response.
>
> On Mon, Jan 25, 2016 at 5:22 PM, Ashwin Chandra Putta <
> ashwinchandrap@gmail.com> wrote:
>
> > It always called sequentially in a single thread. A given operator
> > runs in its main thread and all the calls on the operator are called
> > with in the same thread.
> >
> > Regards,
> > Ashwin.
> >
> > On Mon, Jan 25, 2016 at 2:13 PM, Bryan Bende <bbende@gmail.com> wrote:
> >
> > > Hello,
> > >
> > > Quick beginner question regarding the life-cycle of operators...
> > >
> > > Can emitTuples() get called concurrently by multiple threads? or is
> > > it always called sequentially for a given window until endWindow()
> > > is
> > called?
> > >
> > > Thanks,
> > >
> > > Bryan
> > >
> >
> >
> >
> > --
> >
> > Regards,
> > Ashwin.
> >
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-- 

Regards,
Ashwin.

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