Looks like the graph is wrong. Hannu
> On 22 Nov 2016, at 15.43, CHAUMIER, RAPHAËL <racha...@bouyguestelecom.fr> > wrote: > > Hello everyone, > > I don’t know if you have access to DataStax documentation. I don’t understand > the example about Multiple datacenter write requests > (http://docs.datastax.com/en/cassandra/3.0/cassandra/dml/dmlClientRequestsMultiDCWrites.html > > <http://docs.datastax.com/en/cassandra/3.0/cassandra/dml/dmlClientRequestsMultiDCWrites.html>). > The graph shows there’s 3 nodes making up of QUORUM, but based on the quorum > computation rule > (http://docs.datastax.com/en/cassandra/3.0/cassandra/dml/dmlConfigConsistency.html#dmlConfigConsistency__about-the-quorum-level > > <http://docs.datastax.com/en/cassandra/3.0/cassandra/dml/dmlConfigConsistency.html#dmlConfigConsistency__about-the-quorum-level>) > > quorum = (sum_of_replication_factors / 2) + 1 > > sum_of_replication_factors = datacenter1_RF + datacenter2_RF + . . . + > datacentern_RF > > If I have 2 DC of 3 replica nodes so the quorum should be = ( 3+3 /2) +1 = > (6/2) + 1 = 3 + 1 = 4 > > Am I missing something ? > > Thanks for your response. > > Regards, > > > > L'intégrité de ce message n'étant pas assurée sur internet, la société > expéditrice ne peut être tenue responsable de son contenu ni de ses pièces > jointes. Toute utilisation ou diffusion non autorisée est interdite. Si vous > n'êtes pas destinataire de ce message, merci de le détruire et d'avertir > l'expéditeur. > > The integrity of this message cannot be guaranteed on the Internet. The > company that sent this message cannot therefore be held liable for its > content nor attachments. Any unauthorized use or dissemination is prohibited. > If you are not the intended recipient of this message, then please delete it > and notify the sender.
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