Hi,
We have a cassandra cluster in ec2.
If i stop a node and start it - as a result the node ip changes. The
node is recognised as NEW node and is declared as replacing the previous
node with same token.(But this is the same node of course)
In this specific case the node ip before stop/start was 10.63.14.214 and
new ip is 10.54.81.14.
And even that the cluster and node seems to be working fine for more
than a day after the stop/start of this node, I see the following loop
of messages ~ once every minute.
INFO [GossipStage:1] 2012-04-30 14:18:57,089 Gossiper.java (line 838)
Node /10.63.14.214 is now part of the cluster
INFO [GossipStage:1] 2012-04-30 14:18:57,089 Gossiper.java (line 804)
InetAddress /10.63.14.214 is now UP
INFO [GossipStage:1] 2012-04-30 14:18:57,090 StorageService.java (line
1017) Nodes /10.63.14.214 and cassa1a.internal/10.54.81.14 have the same
token 0. Ignoring /10.63.14.214
INFO [GossipTasks:1] 2012-04-30 14:19:11,834 Gossiper.java (line 818)
InetAddress /10.63.14.214 is now dead.
INFO [GossipTasks:1] 2012-04-30 14:19:27,896 Gossiper.java (line 632)
FatClient /10.63.14.214 has been silent for 30000ms, removing from gossip
INFO [GossipStage:1] 2012-04-30 14:20:30,803 Gossiper.java (line 838)
Node /10.63.14.214 is now part of the cluster
...
How come the old ip 10.63.14.214 still popup as UP and then declared as
DEAD again, an so on and on?
I know since this is ec2 other node with same ip can come UP, but i've
verified and there is no such node and it certainly does not run
cassandra :)
I stop/started another node and observe similar behaviour.
This is version 1.0.8
Another question, if node is recognised as new (due to ip change) but
with same token - will other nodes stream the hinted handoffs to it?
And is there way to tell cassandra also use names and if ip changes but
node name is the same and resolves to the new ip then the cluster treat
it as old node?
Thanks
Alex
