Hi, I have stored following data structure in cassandra RowKey: 119551747098
=> (name=c:per:@batchId, value=ad1, timestamp=1408345109805011, ttl=1436489) => (name=c:per:@currency, value=USD, timestamp=1408345109805009, ttl=1436489) => (name=c:per:@decimalValue, value=2, timestamp=1408345109805003, ttl=1436489) here Rowkey 119551747098 is a numeric number containing serial number of data These columns get expired when ttl value for that column is reached. I what to generate an log entry which contains value of RowKey along when column pointed by this Rowkey gets deleted due to ttl expiration. Where in code I can put log entries so that Rowkey corresponding to deleted columns gets printed in log file? Regards, Gaurav