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From Sergey Chugunov <sergey.chugu...@gmail.com>
Subject Re: Cluster auto activation design proposal
Date Thu, 10 Aug 2017 14:41:07 GMT
Going down "node set" road:

-fixed node set
-established node set
-base node set

On Thu, Aug 10, 2017 at 5:23 PM, Dmitriy Setrakyan <dsetrakyan@apache.org>
wrote:

> Can we brainstorm on the names again, I am not sure we have a consensus on
> the name "baseline topology". This will be included in Ignite
> configuration, so the name has to be clear.
>
> Some of the proposals were:
>
> - baseline topology
> - minimal node set
> - node restart set
> - minimal topology
>
> Any other suggestions?
>
> D.
>
> On Thu, Aug 10, 2017 at 2:13 AM, Alexey Goncharuk <
> alexey.goncharuk@gmail.com> wrote:
>
> > Denis,
> >
> > This should be handled by the BT triggers. If I have 3 backups
> configured,
> > I actually won't care if my cluster will live 6 hours without an
> additional
> > backup. If for a partition there is only one backup left - a new BT
> should
> > be triggered automatically.
> >
> > 2017-08-10 0:33 GMT+03:00 Denis Magda <dmagda@apache.org>:
> >
> > > Sergey,
> > >
> > > That’s the only concern I have:
> > >
> > > * 5. User takes out nodes from cluster (e.g. for maintenance purposes):
> > no
> > >   rebalance happens until user recreates BLT on new cluster topology.*
> > >
> > > What if a node is crashed (or some other kind of outage) in the middle
> of
> > > the night and the user has to be sure that survived nodes will
> rearrange
> > > and rebalancing partitions?
> > >
> > > —
> > > Denis
> > >
> > >
> > > > On Aug 4, 2017, at 9:21 AM, Sergey Chugunov <
> sergey.chugunov@gmail.com
> > >
> > > wrote:
> > > >
> > > > Folks,
> > > >
> > > > I've summarized all results from our discussion so far on wiki page:
> > > > https://cwiki.apache.org/confluence/display/IGNITE/
> > > Automatic+activation+design+-+draft
> > > >
> > > > I hope I reflected the most important details and going to add API
> > > > suggestions for all use cases soon.
> > > >
> > > > Feel free to give feedback here or in comments under the page.
> > > >
> > > > Thanks,
> > > > Sergey.
> > > >
> > > > On Thu, Aug 3, 2017 at 5:40 PM, Alexey Kuznetsov <
> > akuznetsov@apache.org>
> > > > wrote:
> > > >
> > > >> Hi,
> > > >>
> > > >>>> 1. User creates new BLT using WebConsole or other tool and
> "applies"
> > > it
> > > >> to brand-new cluster.
> > > >>
> > > >> Good idea, but we also should implement *command-line utility* for
> the
> > > same
> > > >> use case.
> > > >>
> > > >> --
> > > >> Alexey Kuznetsov
> > > >>
> > >
> > >
> >
>

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