Re: deleting columns with CAS (2.0.0-beta2)

2013-07-31 Thread Kalpana Suraesh
Actually, it was pointed out to me that there's a comment in org.apache.cassandra.service.StorageProxy#cas() that says: // finish the paxos round w/ the desired updates // TODO turn null updates into delete? Commit proposal = Commit.newProposal(key, ballot,

Re: deleting columns with CAS (2.0.0-beta2)

2013-07-29 Thread aaron morton
I presume it can be done because conditional deletes work through CQL3. Out of interest where do you have an example or a reference for this? Cheers - Aaron Morton Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 26/07/2013, at 8:07 AM, Kalpana

Re: deleting columns with CAS (2.0.0-beta2)

2013-07-29 Thread Kalpana Suraesh
Yep, for example, I created a simple users table and then issued a delete with an IF statement. i.e CREATE TABLE users ( user_name varchar, password varchar, state varchar, PRIMARY KEY (user_name) ); INSERT INTO users (user_name, password,

deleting columns with CAS (2.0.0-beta2)

2013-07-25 Thread Kalpana Suraesh
Hi, I've been playing around with CAS (compare-and-swap) in the 2.0 beta, using the Thrift API. I can't at all figure out how to delete columns while using CAS, however. I'm able to update/insert columns by adding them to the list of updates that is passed as a parameter to