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From Alexander Shraer <shra...@gmail.com>
Subject Re: majority of non-failing machines VS quorum
Date Thu, 30 May 2019 20:56:59 GMT
yep, for odd n that's right.

On Thu, May 30, 2019 at 1:30 PM Joel Mestres <joel.mestres@globant.com>
wrote:

> ok great so the minimum quorum always is F + 1 considering n as odd, right
> ?
>
> On Thu, May 30, 2019 at 3:38 PM Alexander Shraer <shralex@gmail.com>
> wrote:
>
> > If you're using "majority quorums" (the default in ZK),
> F=floor((n-1)/2). A
> > quorum is any set containing a majority (or more) of servers.
> > The basic requirement is that any two quorums must intersect.
> >
> >
> > On Wed, May 29, 2019 at 6:55 PM Patrick Hunt <phunt@apache.org> wrote:
> >
> > > 2n+1 = ensemble size required to survive n failed zkservers (servers
> not
> > in
> > > the quorum)
> > >
> > > iow: 3 nodes means 1 zkserver can fail and the service is still up. 5
> and
> > > you can survive 2 failures.
> > >
> > > Patrick
> > >
> > > On Wed, May 29, 2019 at 4:43 PM Joel Mestres <joel.mestres@globant.com
> >
> > > wrote:
> > >
> > > > Hello which is the relation between the number of F failling machines
> > > that
> > > > the cluster can tolerate and the quorum configuration? F determines
> the
> > > > posibles numbers of quorums? or F can be greater / smaller than
> quorum
> > ?
> > > > thanks in advance for your response!
> > > >
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>
> The information contained in this e-mail may be confidential. It has been
> sent for the sole use of the intended recipient(s). If the reader of this
> message is not an intended recipient, you are hereby notified that any
> unauthorized review, use, disclosure, dissemination, distribution or
> copying of this communication, or any of its contents, is strictly
> prohibited. If you have received it by mistake please let us know by
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>
>
> La información
> contenida en este mensaje puede ser confidencial. Ha sido enviada para el
> uso exclusivo del destinatario(s) previsto. Si el lector de este mensaje
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> fuera el destinatario previsto, por el presente queda Ud. notificado que
> cualquier lectura, uso, publicación, diseminación, distribución o copiado
> de esta comunicación o su contenido está estrictamente prohibido. En caso
> de que Ud. hubiera recibido este mensaje por error le agradeceremos
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>

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