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From Chinmay Soman <chinmay.cere...@gmail.com>
Subject Re: Question on zero downtime deployment of Samza jobs
Date Thu, 14 Jan 2016 18:12:20 GMT
Sorry for the long delay (I was trying to find the design doc we made).
Please see attachment for the design doc. I'm also CC'ing Peter Huang (the
intern) who worked on this.

Disclaimer: Given this was an internship project, we've cut some corners.
We plan to come up with an improved version in some time.

On Wed, Jan 6, 2016 at 11:31 AM, Yi Pan <nickpan47@gmail.com> wrote:

> Hi, Chinmay,
>
> That's awesome! Could you share some design doc of this feature? We would
> love to have this feature in LinkedIn as well!
>
> -Yi
>
> On Wed, Jan 6, 2016 at 10:02 AM, Chinmay Soman <chinmay.cerebro@gmail.com>
> wrote:
>
> > FYI: As part of an Uber internship project, we were working on exactly
> this
> > problem. Our approach was to do a rolling restart of all the containers
> > wherein we start a "replica" container for each primary container and let
> > it "catch up" before we do the switch. Of course this doesn't guarantee
> > zero downtime, but it does guarantee minimum time to upgrade each such
> > container.
> >
> > The code is still in POC, but we do plan to finish this and make this
> > available. Let me know if you're interested in trying it out.
> >
> > FYI: the sticky container deployment will also minimize the time to
> upgrade
> > / deploy since majority of the upgrade time is taken up by the container
> in
> > reading all the changelog (if any). Upgrade / re-deploy will also take a
> > long time if the checkpoint topic is not log compacted (which is true in
> > our environment).
> >
> > Thanks,
> > C
> >
> > On Wed, Jan 6, 2016 at 9:56 AM, Bae, Jae Hyeon <metacret@gmail.com>
> wrote:
> >
> > > Hi Samza devs and users
> > >
> > > I know this will be tricky in Samza because Samza Kafka consumer is not
> > > coordinated externally, but do you have any idea how to deploy samza
> jobs
> > > with zero downtime?
> > >
> > > Thank you
> > > Best, Jae
> > >
> >
> >
> >
> > --
> > Thanks and regards
> >
> > Chinmay Soman
> >
>



-- 
Thanks and regards

Chinmay Soman

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