On Fri, Nov 18, 2011 at 4:23 PM, Anthony Ikeda <[email protected]> wrote: > This is the setup: > Cassandra 0.8.6 > 3 nodes > Keyspace: NetworkTopologyStrategy, 1DC, RF=2 > > 1 node goes down and we cannot read from the ring. > > My expectation is that LOCAL_QUORUM dictates that it will return a record > once a majority (N/2 +1) of replicas reports back. > > 2/2 + 1 = 2 > > I originally thought N=3 for 3 nodes but someone has corrected me on this > that it's the replicas (2) but when I use the cli, setConsistencyLevel AS > LOCAL_QUORUM nothing comes back. Set it back to ONE I can see the data > > Is there somethin I'm missing?
You've arrived at the right answer, 2, but you're using N to refer to the amount of nodes (in the last part), where you need it to refer to the RF. RF=3 is the minimum amount where you can achieve quorum with a member of the replica set being down. -Brandon
