On Thu, May 23, 2013 at 12:07 PM, Emalayan Vairavanathan <[email protected]> wrote: > Do you have any idea how Cassandra is going to handle concurrent namespace > and column family creation (Here all the instances are going to create the > same namespace and column families concurrently)? > [...] > However I am not sure how Cassandra is going to behave if multiple nodes try > to create the same schema (namespace and column families) concurrently. It > would be nice if someone can tell me about the implications of Option - 2 > with Cassandra version 1.2.2.
Concurrent CREATE is allegedly working in 1.2.0, per NEWS.txt [1]. I say allegedly working because this feature was also allegedly working in 1.1.0. Given past experience, I continue to (perhaps pessimistically) believe that frequent dynamic updates of schema are likely to result in schema desynch. I would be interested to hear if you go down this route and do not encounter problems. See also CASSANDRA-3794 [2] for details. =Rob [1] https://github.com/apache/cassandra/blob/cassandra-1.2/NEWS.txt [2] https://issues.apache.org/jira/browse/CASSANDRA-3794
