how to integrate cassandra with zookeeper to support transactions

Question

I have a Cassandra cluster and Zookeeper server installed. Now I want to support transactions in cassandra using zookeeper. How do i do that.

Zookeeper creates znod

Answer 1

There are ways you can use to implement transactions in Cassandra without ZooKeeper.

Cassandra itself has a feature called Lightweight transactions which provides per key linearizability and compare-and-set. With such primitives you can implement serializable transactions on the application level by youself.

Please see the Visualization of serializable cross shard client-side transactions post for for details and step-by-step visualization.

The variants of this approach are used in Google's Percolator system and in CockroachDB.

By the way, if you're fine with Read Committed isolation level then it makes sense to take a look on the RAMP transactions paper by Peter Bailis.