See the section on memtable_total_space_in_mb here http://thelastpickle.com/2011/05/04/How-are-Memtables-measured/
Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 6/06/2012, at 2:27 AM, rohit bhatia wrote: > I am trying to understand the variance in flushes frequency in a 8 > node Cassandra cluster. > All the flushes are of the same type and initiated by MeteredFlusher.java => > > "INFO [OptionalTasks:1] 2012-06-05 06:32:05,873 MeteredFlusher.java > (line 62) flushing high-traffic column family CFS(Keyspace='Stats', > ColumnFamily='Minutewise_Channel_Stats') (estimated 501695882 bytes)" > [taken from system.log] > > Number of flushes for 1 column family vary from 6 flushes per day to > 24 flushes per day among nodes of same configuration and same > hardware. > Could you please throw light on the what conditions does > MeteredFlusher use to trigger memtable flushes. > Also how accurate is the estimated size in the above logfile entry. > > Regards > Rohit Bhatia > Software Engineer, Media.net
