Sorry for the last mail, hit the wrong button. This JMX property gives a per-CF granularity, right?
I think it doesn't solve the problem completely here because the problem of key load-balancing effectively demands for a per-key granularity. But this could help statistical sampling. Roland 26.03.2010 22:29 schrieb am "Rob Coli" <rc...@digg.com>: On 3/26/10 1:36 PM, Roland Hänel wrote: > > If I was going to write such a tool: do you think the th... The JMX interface exposes an Attribute which seems appropriate to this use. It is called "TotalDiskSpaceUsed," and is available on a per-columnfamily basis. Given a CF called "Users" in a Keyspace called "MyKeyspace", it is accessible at : " org.apache.cassandra.db:type=ColumnFamilyStores,keyspace=MyKeyspace,columnfamily=Users " Unfortunately, I have yet to document the per-CF "ColumnFamilyStores" and "Caches" JMX interface Attributes and Operations, including this one. But when I do so, I will do it here : http://wiki.apache.org/cassandra/JmxInterface =Rob
