what is quorum for a key? On Tue, Jul 14, 2009 at 8:25 AM, Jonathan Ellis <[email protected]> wrote:
> Note that for N=2, quorum write is the same as block-for-all. That is > why N=3 is more popular, because it allows for one node to be down but > still give you a quorum for any key. > > -Jonathan > > On Tue, Jul 14, 2009 at 10:22 AM, <[email protected]> wrote: > > starting with replica count 2 is more prudent thanks > > > > On Tue, Jul 14, 2009 at 8:21 AM, Jonathan Ellis <[email protected]> > wrote: > >> > >> although the repair code Stu is working on > >> (https://issues.apache.org/jira/browse/CASSANDRA-193) could handle > >> increasing the replica count, IMO there's little sense in relying any > >> more on features that don't yet exist than necessary. :) > >> > >> On Tue, Jul 14, 2009 at 10:17 AM, <[email protected]> wrote: > >> > as a followup question > >> > the items we are storing are extremely valuable and we are using > >> > cassandra > >> > as a sql replacement tool.. ie no more postgres and all data from > >> > cassandra, > >> > given cassandra scalability > >> > as we hit limits on postgres and found pgpool-II horizontal > partitioning > >> > too > >> > clunky and skype, plproxy requires too much rewiring the client code. > >> > should we start with a replica factor 1 and then increase replica > factor > >> > to > >> > 2 > >> > or is is prudent to start with a replica factor of 2 > >> > Can cassandra replicate even after running for a long time with a > >> > replica > >> > factor of 1, if we change the replica factor to say 2 after 2months > when > >> > we > >> > add more nodes and figure there is enough space now to replicate > >> > thanks > >> > > >> > -- > >> > Bidegg worlds best auction site > >> > http://bidegg.com > >> > > > > > > > > > -- > > Bidegg worlds best auction site > > http://bidegg.com > > > -- Bidegg worlds best auction site http://bidegg.com
