more questions on Cassandra ACID properties

2010-07-20 Thread Alex Yiu
guess we should change the wording from insert to insert or update in the wiki doc And, ideally, insert(...) API operation name would be adapted to update_or_insert(...) Looking forward to replies that may confirm my understanding. Thanks! Regards, Alex Yiu

testing please ignore

2010-07-20 Thread Alex Yiu
testing please ignore

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 jbel...@gmail.com wrote: On Tue, Jul 20, 2010 at 2

Re: Understanding atomicity in Cassandra

2010-07-20 Thread Alex Yiu
gone through. Hope this email helps. Thanks! Regards, Alex Yiu On Tue, Jul 20, 2010 at 2:03 PM, Jonathan Ellis jbel...@gmail.com wrote: 2010/7/20 Patricio Echagüe patric...@gmail.com: Would it be bad design to store all the data that need to be consistent under one big key

Re: Understanding atomicity in Cassandra

2010-07-19 Thread Alex Yiu
writes for /a/b/c into 2 CFs and two writes for /foo/bar into 2) would interleave each other and create an undesirable result. I guess that is not a likely situation in your case. Hopefully, my email helps. See also: http://wiki.apache.org/cassandra/FAQ#batch_mutate_atomic Regards, Alex Yiu