That is impossible to implement without making the write path at least as slow
as the read path. Things like this typically get layed on Cassandra by using an
external locking framework, like Zookeeper.
-----Original Message-----
From: Rishi Bhardwaj <khichri...@yahoo.com>
Date: Sun, 20 Jun 2010 14:57:46
To: <dev@cassandra.apache.org>
Reply-To: dev@cassandra.apache.org
Subject: Atomic Compare and Swap
Hi
I was wondering if Cassandra has any plans for supporting atomic compare and
swap operation on a column value? Compare could be on timestamp for the column
or the column value itself and the write of course is on the column value + a
new timestamp. If there are no plans on supporting such an operation, how
difficult would it be to implement such a functionality? I would be interested
to start working on this if no one else is doing so and would really appreciate
any pointers in the right direction in how to contribute here.
Thanks,
Rishi
