Using batch_mutate on a single row will count as 1 write operation, even if you mutate multiple columns. Using batch_mutate on N rows will count as N write operations. - Tyler
On Mon, Nov 29, 2010 at 5:58 PM, Narendra Sharma <narendra.sha...@gmail.com>wrote: > Hi, > > I am using Cassandra 0.7 beta3 and Hector. > > I create a mutation map. The mutation involves adding few columns for a > given row. After that I use batch_mutate API to send the changes to > Cassandra. > > Question: > If there are multiple column writes on same row in a mutation_map, does > Cassandra show (on JMX write count stats for CF) that as 1 write operation > or as N write operations where N is the number of entries in mutation map > for that row. > Assume all the changes in mutation map are for one row. > > Thanks, > Naren >
