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From Joel Mestres <joel.mest...@globant.com>
Subject Re: majority of non-failing machines VS quorum
Date Thu, 30 May 2019 20:29:30 GMT
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 e-mail 
immediately and delete it from your system. Many thanks.

 

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 no 
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 
notificarnos por e-mail inmediatamente y eliminarlo de su sistema. Muchas 
gracias.


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