On Fri, Dec 18, 2015 at 9:17 AM, DuyHai Doan <doanduy...@gmail.com> wrote:
> Cassandra will perform a full table scan and fetch all the data in memory > to apply the aggregate function. Just to clarify for others on the list: when executing aggregation functions, Cassandra *will* use paging internally, so at most one page worth of data will be held in memory at a time. However, if your aggregation function retains a large amount of data, this may contribute to heap pressure. -- Tyler Hobbs DataStax <http://datastax.com/>
