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From John Sirois <jsir...@apache.org>
Subject Re: [FEEDBACK] Transitioning Aurora leader election to Apache Curator (`-zk_use_curator`)
Date Wed, 15 Jun 2016 16:54:29 GMT
On Wed, Jun 15, 2016 at 10:49 AM, Bill Farner <wfarner@apache.org> wrote:

> >
> > Assuming we don't run into any roadblocks: How about changing the
> > default of `-zk_use_curator` from False to True for the next release?
>
>
> +1
>
> I believe that was the plan of action, though i can't recall if it was
> recorded anywhere more official than the dev list.
>

Its effectively the plan of action recorded in
https://issues.apache.org/jira/browse/AURORA-1669 which tracks deprecating
the flag in the 0.15.0 release (and deleting in 0.16.0 by implication).
I've clarified though.


>
> On Wed, Jun 15, 2016 at 9:44 AM, Stephan Erb <serb@apache.org> wrote:
>
> > Thanks for doing the follow-up! I'll gradually enable the option on our
> > clusters sometime next week and let you know if we hit any issues.
> >
> > Assuming we don't run into any roadblocks: How about changing the
> > default of `-zk_use_curator` from False to True for the next release?
> > Then we cane make significant progress with the deprecation while still
> > giving operators the possibility to do a  fall-back if necessary.
> >
> > Cheers,
> > Stephan
> >
> > On Di, 2016-06-14 at 17:43 -0600, John Sirois wrote:
> > > I'd like to move forward with https://issues.apache.org/jira/browse/A
> > > URORA-1669 asap; ie: removing legacy (Twitter) commons zookeeper
> > > libraries used for Aurora leader election in favor of Apache Curator
> > > libraries. The change submitted in https://reviews.apache.org/r/46286
> > > / is now live in Aurora 0.14.0 and Apache Curator based service
> > > discovery can be enabled with the Aurora scheduler flag `-
> > > zk_use_curator`.  I'd like feedback from users who enable this
> > > option.  If you have a test cluster where you can enable `-
> > > zk_use_curator` and exercise leader failure and failover, I'd be
> > > grateful.  If you have moved to using this option in production with
> > > demonstrable improvements or even maintenance of status quo, I'd also
> > > be grateful for this news. If you've found regressions or new bugs,
> > > I'd love to know about those as well.
> > >
> > > Thanks in advance to all those who find time to test this out on real
> > > systems!
> >
>

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