A dead node should exist in the ring until it is replaced. If you remove a node without a replacement, you’ll end up with that replica’s ownership being placed onto another node without the data having been transferred, and queries against that range will falsely empty records until a repair is completed. I believe the most correct action is to start up a replacement node using the -Dcassandra.replace_address=ip_of_dead_node command line argument. Reference http://docs.datastax.com/en/cassandra/2.0/cassandra/operations/ops_replace_node_t.html <http://docs.datastax.com/en/cassandra/2.0/cassandra/operations/ops_replace_node_t.html>.
-Jeff > On Sep 21, 2015, at 5:32 PM, Shenghua(Daniel) Wan <wansheng...@gmail.com> > wrote: > > Hi, > When a node is dead, is it supposed to exist in the ring? When I found a node > is lost, and I check with nodetool and ops center, I still see the lost node > in the token ring. When I describe_ring, the lost node is also returned. Is > this what it is supposed to be? Why did not C* server hide the lost nodes > from the clients? > > Thanks a lot! > > -- > > Regards, > Shenghua (Daniel) Wan
