Hello Mohit, It is advised not to go above two or three column families. This is because, when we have many column families, the flushing and compaction can cause too many needless i/o operations, thus reducing the performance.
As far as versions are concerned, default value is 3. Although we can change it as per our need, but it is not recommended to set the number of max versions to an exceedingly high level because this will increase size of the StoreFile greatly. Regards, Mohammad Tariq On Wed, Aug 1, 2012 at 10:10 AM, Mohit Anchlia <mohitanch...@gmail.com> wrote: > Are there any disadvantages of: > > 1. using multiple column families in a table > 2. using multiple versions of a columns