Re: Effective cache size

2010-06-03 Thread Jonathan Ellis
On Thu, Jun 3, 2010 at 10:17 AM, David King wrote: >>> So with the row cache, that first node (the primary replica) is the one >>> that has that row cached, yes? >> No, it's the closest node as determined by snitch.sortByProximity. > > And with the default snitch, rack-unaware placement, random p

Re: Effective cache size

2010-06-03 Thread David King
>> So with the row cache, that first node (the primary replica) is the one that >> has that row cached, yes? > No, it's the closest node as determined by snitch.sortByProximity. And with the default snitch, rack-unaware placement, random partitioner, and all nodes up, that's the primary replica,

Re: Effective cache size

2010-06-02 Thread Jonathan Ellis
On Wed, Jun 2, 2010 at 10:39 PM, David King wrote: > If I go to fetch some row given the rack-unaware placement strategy, the > default snitch and CL==ONE, the node that is asked is the first node in the > ring with the datum that is currently up, then a checksum is sent to the > replicas to tr

Effective cache size

2010-06-02 Thread David King
If I go to fetch some row given the rack-unaware placement strategy, the default snitch and CL==ONE, the node that is asked is the first node in the ring with the datum that is currently up, then a checksum is sent to the replicas to trigger read repair as appropriate. So with the row cache, tha