Max value for TTL in cassandra

Question

What is the maximum value we can assign to TTL ?

In the java driver for cassandra TTL is set as a int. Does that mean it is limited to Integer.MAX (2,147,483,647 secs) ?

Answer 1

The maximum TTL is actually 20 years. From org.apache.cassandra.db.ExpiringCell:

public static final int MAX_TTL = 20 * 365 * 24 * 60 * 60; // 20 years in seconds

I think this is verified along both the CQL and Thrift query paths.