title: Cassandra datastore size
body: <p>I am using Cassandra to store my parsed site logs. I have two column families with multiple secondary indices. The log data by itself is around 30 gb in size. However, the size of the cassandra data dir is ~91g. Is there any way I can reduce the size of this store? Also, will having multiple secondary indices have a big impact on the datastore size?</p>