Re: electricity outage problem

2016-01-15 Thread Adil
our case is not about accepting connection, some nodes receives gossip generation number greater the local one, a looked at the tables peers and local and can't found where local one is stored. 2016-01-15 17:54 GMT+01:00 daemeon reiydelle : > Nodes need about 60-90 second delay before it can star

Re: electricity outage problem

2016-01-15 Thread daemeon reiydelle
Nodes need about 60-90 second delay before it can start accepting connections as a seed node. Also a seed node needs time to accept a node starting up, and syncing to other nodes (on 10gbit the max new nodes is only 1 or 2, on 1gigabit it can handle at least 3-4 new nodes connecting). In a large cl

Re: electricity outage problem

2016-01-15 Thread Adil
Hi, we did full restart of the cluster but nodetool status still giving incoerent info from different nodes, some nodes appers UP from a node but appers DOWN from another, and in the log as is said still having the message "received an invalid gossip generation for peer /x.x.x.x" cassandra version

Re: electricity outage problem

2016-01-12 Thread Jack Krupansky
Sometimes you may have to clear out the saved Gossip state: https://docs.datastax.com/en/cassandra/2.0/cassandra/operations/ops_gossip_purge.html Note the instruction about bringing up the seed nodes first. Normally seed nodes are only relevant when initially joining a node to a cluster (and then

Re: electricity outage problem

2016-01-12 Thread daemeon reiydelle
This happens when there is insufficient time for nodes coming up to join a network. It takes a few seconds for a node to come up, e.g. your seed node. If you tell a node to join a cluster you can get this scenario because of high network utilization as well. I wait 90 seconds after the first (i.e.