On Sun, Sep 12, 2010 at 2:56 PM, kannan chandrasekaran <ckanna...@yahoo.com> wrote: > 1) What determines the amount of memory used per schema ignoring the general > overhead to get cassandra up and running? Is it just the size of the caches > for the column Family + the memtable size ?
and the bloom filter and index samples from the sstable files. > 2) Is the size of the cache configured ( in terms of absolute numbers or > percentages), an upper bound on the amount of memory that can be allocated > and which grows as more data is filled up in the cache ? no. it's strictly the number of items you give it. so you need to be careful not to make it larger than you have room in the heap. -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
