Re: more questions on Cassandra ACID properties

2010-07-20 Thread Alex Yiu
Hi, all, (Jonathan Ellis, Jonathan Shook, Aaron Morton) Thanks for the confirmation. JonE, the "update" wording has been added to wiki page w.r.t. to insert and mutation API. Regards, Alex Yiu On Tue, Jul 20, 2010 at 2:02 PM, Jonathan Ellis wrote: > On Tue, Jul 20, 2010 at 2:58 PM, Alex Yi

Re: more questions on Cassandra ACID properties

2010-07-20 Thread Aaron Morton
Yes, both inserts (colD and colE) will succeed if you send insert() or batch_mutation()s from the client. It's also correct to think of them as insert-or-update calls. AaronOn 21 Jul, 2010,at 07:58 AM, Alex Yiu wrote:Hi,I have more questions on Cassandra ACID properties. Say, I have a row

Re: more questions on Cassandra ACID properties

2010-07-20 Thread Jonathan Shook
a logical instance of each row, from what I know. Maybe a dev can confirm this. On Tue, Jul 20, 2010 at 2:58 PM, Alex Yiu wrote: > > > Hi, > I have more questions on Cassandra ACID properties. > Say, I have a row that has 3 columns already: colA, colB and colC > And, if two *c

Re: more questions on Cassandra ACID properties

2010-07-20 Thread Jonathan Ellis
On Tue, Jul 20, 2010 at 2:58 PM, Alex Yiu wrote: > Say, I have a row that has 3 columns already: colA, colB and colC > And, if two *concurrent* clients perform a different insert(...) into the > same row, > one insert is for colD and the other insert is for colE. > Then, Cassandra would guarantee

more questions on Cassandra ACID properties

2010-07-20 Thread Alex Yiu
Hi, I have more questions on Cassandra ACID properties. Say, I have a row that has 3 columns already: colA, colB and colC And, if two *concurrent* clients perform a different insert(...) into the same row, one insert is for colD and the other insert is for colE. Then, Cassandra would guarantee