Re: RE: Cassandra datacenters replication advanced usage

2015-06-02 Thread Anuj Wadehra
at 5:12 pm Subject:RE: Cassandra datacenters replication advanced usage Hello Marcus and thank you for your fast reply.   Yes, we thought about that and indeed it would work. However we really have writes and reads constraints for respectively producer and consumer datacenters so we would like to kee

RE: Cassandra datacenters replication advanced usage

2015-06-02 Thread Fabrice Douchant
ization between datacenters to be fast, we just need to know when it's done :-/ Fabrice From: Marcus Olsson [mailto:marcus.ols...@ericsson.com] Sent: mardi 2 juin 2015 13:29 To: user@cassandra.apache.org Subject: Re: Cassandra datacenters replication advanced usage Hi Fabrice, Have

Re: Cassandra datacenters replication advanced usage

2015-06-02 Thread Marcus Olsson
Hi Fabrice, Have you considered using "each_quorum" instead of "all"? Each_quorum will require replies from a quorum of nodes from all datacenters. This could be used either: Producer using each_quorum and consumer local_quroum. (better read latencies at the cost of write latencies) or Pr

Cassandra datacenters replication advanced usage

2015-06-02 Thread Fabrice Douchant
Hi everyone. For a project, we use a Cassandra cluster in order to have fast reads/writes on a large number of (column oriented) generated data. Until now, we only had 1 datacenter for prototyping. We now plan to split our cluster in 2 datacenters to meet performance requirements (the data tra