On Tue, Dec 14, 2010 at 7:14 AM, Alberto Velandia
wrote:
> Hi has anyone noticed that the documentation for the Cassandra Class is gone
> from the website?
>
> http://blog.evanweaver.com/2010/12/06/cassandra-0-8/
http://rdoc.info/gems/cassandra will always have the latest rdocs.
> I was wonderi
There's an estimateKeys() function exposed via JMX that will give you an
approximate row count for the node. In jconsole this shows up under
o.a.c.db -> ColumnFamilies -> Keyspace -> CF -> Operations.
There's not a "precise" way to count rows other than to do a
get_range_slices() over the entire
There is a truncate() function on the ruby api if you require Cassandra/0.7
this can truncate all the data in a CF. It will call the truncate function on
the thrift api.
I do not know of a precise way to get a count of rows. There is a function to
count the number of columns, see count_columns
