Re: Non-zero nodes are marked as down after restarting cassandra process

2017-03-01 Thread Ben Dalling
Hi Andrew, We were having problems with gossip TCP connections being held open and changed our SOP for stopping cassandra to being: nodetool disablegossip nodetool drain service cassandra stop This seemed to close down the gossip cleanly (the nodetool drain is advised as well) and meant that the

Re: Cassandra Upgrade

2016-11-29 Thread Ben Dalling
ction based on this > message or any information herein. > If you have received this message in error, please advise the sender > immediately by reply email and delete this message. Thank you. > -- *Ben Dalling** MSc, CEng, MBCS CITP* League of Crafty Programmers Ltd Mobile: +44 (0) 776 981-1900 email: b.dall...@locp.co.uk www: http://www.locp.co.uk http://www.linkedin.com/in/bendalling

Re: Is it a must to run Cassandra repair in scheduled time

2016-11-18 Thread Ben Dalling
Hi Simon, See http://www.datastax.com/dev/blog/repair-in-cassandra for a good explanation. Basically repair is not a good word because it suggests it is fixing something that is broken. This is not the case. It ensures the consistency across your cluster. Not running repairs is a VERY BAD THIN

Re: Where to change the datacenter name?

2016-10-10 Thread Ben Dalling
Hi, It depends on which snitch you are using, but the DC name is in cassandra-rackdc.properties for the GossipingPropertyFileSnitch. Best wishes, Ben On 10 October 2016 at 20:54, Adam Hutson wrote: > There is a cluster name in the cassandra.yaml for naming the cluster, aka > data center. Then