Have you looked at the TTL column feature in 0.7? http://www.datastax.com/dev/blog/whats-new-cassandra-07-expiring-columns
Those will automatically expire columns after a certain time period - not when you near the column limit, but might be helpful for you. On Jun 9, 2011, at 10:51 AM, Bahadur, Kamal wrote: > From the documentation, I came to know that there is a limitation of maximum > number (2 billion) of columns that a column family can have. My questions is, > is there a way to purge the old columns when the number of columns is nearing > the 2 billion mark? > > Thanks, > Kamal
