There was a thread on this a couple days ago -- short answer, the 'owns %' column is effectively incorrect when you're using multiple DCs. If you had all 3 servers in 1 DC, since server YYY has token 1 and server XXX has token 0, then server XXX would truly 'own' 0% (actually, 1/(2^128) :) ), and depending on your replication factor might have no data (if replication were 1).
But two data centers is effectively like two rings - since the two nodes in DC2 are token-balanced, you'd see even distribution between them, and DC1 has only one server, so that would be even as well (assuming you replicate to both sites). --DRS On Feb 12, 2012, at 5:42 PM, Roshan wrote: > Hi > > I have deployed Cassandra 1.0.6 to a 2 data center and one data center (DC1) > having one node and the other data center (DC2) having two nodes. But when I > do a nodetool ring using one IP, the output says 0% owns of DC1 node. Please > see the output below. > > # sh nodetool -h 10.XXX.XXX.XX ring > Address DC Rack Status State Load Owns > Token > > 85070591730234615865843651857942052864 > XXX.XXX.XXX.XXX DC2 RAC1 Up Normal 83.89 KB > 50.00% 0 > YYY.YYY.YY.YYY DC1 RAC1 Up Normal 71.4 KB 0.00% > 1 > ZZ.ZZZ.ZZZ.ZZ DC2 RAC1 Up Normal 65.94 KB > 50.00% 85070591730234615865843651857942052864 > > Could someone explain this behavior. > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Multiple-data-center-nodetool-ring-output-display-0-owns-tp7279122p7279122.html > Sent from the cassandra-u...@incubator.apache.org mailing list archive at > Nabble.com.
