Hi all, We use Cassandra in mixed Ec2/OpenStack environment. Unfortunately due to decisions made long ago the OpenStack availability zone name obtainable through http://169.254.169.254/latest/meta-data/placement/availability-zone is not compatible with Cassandra's parsing in o.a.c.locator.Ec2Snitch - the format uses dot instead of minus as field separator. Currently I manage my own fork of Cassandra's snitches, which is error prone. I thought I might patch Cassandra so that it understands custom formats:
- make the format a regex configurable in cassandra.yaml with defaults (option not set at all) set to current implementation - make it easy - presume three groups (us-east-1a, openstack.something-computenode and the like) where the first two groups form datacenter name and the last one the rack (plus keeping CASSANDRA-4026 functionality in place) For users not configuring the regex nothing will change, others, like me, will have the option to parse different availability zone names. What do you think? Does it have a chance being accepted? regards, ondřej černoš
