Re: when a node is dead in Cassandra cluster

2015-09-21 Thread Jeff Ferland
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

Re: when a node is dead in Cassandra cluster

2015-09-21 Thread John Wong
On Mon, Sep 21, 2015 at 8:32 PM, Shenghua(Daniel) Wan wrote: > Hi, > When a node is dead, is it supposed to exist in the ring? > It is still considered as part of a cluster. Imagine a case when you do a rolling restart, the node would be temporary out of service for maybe a few minutes to a few

when a node is dead in Cassandra cluster

2015-09-21 Thread Shenghua(Daniel) Wan
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 l