Re: About the replication strategy of Cassandra

2010-03-13 Thread Kauzki Aranami
>> Does each replication strategy of "Rack Unaware" "Rack Aware(within a >> datacenter)" "Datacenter Aware" in Cassandra depend by the algorithm >> adopted respectively? > > I still don't understand, sorry. The description of the following document is quoted. Cassandra provides various replic

Re: About the replication strategy of Cassandra

2010-03-13 Thread Jonathan Ellis
On Sat, Mar 13, 2010 at 3:47 PM, Kauzki Aranami wrote: > Does each replication strategy of "Rack Unaware" "Rack Aware(within a > datacenter)" "Datacenter Aware" in Cassandra depend by the algorithm > adopted respectively? I still don't understand, sorry. > For instance, what is the strategy reco

Re: About the replication strategy of Cassandra

2010-03-13 Thread Kauzki Aranami
>> 1. Please give notes the replication strategy of Cassandra is selected. > > Can you be more specific? Does each replication strategy of "Rack Unaware" "Rack Aware(within a datacenter)" "Datacenter Aware" in Cassandra depend by the algorithm adopted respectively? For instance, what is the str

Re: About the replication strategy of Cassandra

2010-03-13 Thread Jonathan Ellis
On Sat, Mar 13, 2010 at 12:51 AM, Kauzki Aranami wrote: > 1. Please give notes the replication strategy of Cassandra is selected. Can you be more specific? > 2. About the Zab protocol adopted with Zookeeper. The weak point of > the Paxos protocol of Chubby is a delay. Is the Zab protocol more >

About the replication strategy of Cassandra

2010-03-12 Thread Kauzki Aranami
Hi all. I am interested in the architecture of Cassandra. Cassandra offers the replication policy such as "Rack Unaware" "Rack Aware(within a datacenter)" "Datacenter Aware". It is necessary to select these replication policies by the application. The algorithm when the replication policy based o