RE: remote datacentre consistency

2013-01-09 Thread Simon Guindon
Here's a good document on how hinted handoff works http://www.datastax.com/dev/blog/modern-hinted-handoff I believe if I understand that document correctly that a hinted handoff will get created if the replica is down in the other data center. Also since Cassandra is self-healing, reads will cau

RE: Concurrency and secondary indexes

2012-11-23 Thread Simon Guindon
, Simon Guindon mailto:simon.guin...@jsitelecom.com>> wrote: We are importing data from one column family into a second column family via "nodetool refresh" but we are finding a secondary index is performing slow and the machine CPU is pretty much idle. We are trying to bulk load

Concurrency and secondary indexes

2012-11-22 Thread Simon Guindon
We are importing data from one column family into a second column family via "nodetool refresh" but we are finding a secondary index is performing slow and the machine CPU is pretty much idle. We are trying to bulk load data as fast as possible. Are secondary indexes concurrent or single thread