Nice and simple! -----Original Message----- From: Oleg Anastasyev [mailto:olega...@gmail.com] Sent: Tuesday, October 19, 2010 9:00 AM To: user@cassandra.apache.org Subject: Re: Preventing an update of a CF row
kannan chandrasekaran <ckannanck <at> yahoo.com> writes: > Hi All,I have a query regarding the insert operation. The insert operation by default inserts an new row or updates an existing row. Is it possible to prevent an update but allow only inserts automatically ( especially when multiple clients are writing to cassandra)? I was wondering if there is any flag in cassandra that will validate this for me automatically ( something like unique key constraint) ? If not, is it non-trivial to implement this ? Any suggestions would be helpful.ThanksKannan Always specify some constant value for timestamp. Only 1st insertion with that timestamp will succeed. Others will be ignored, because will be considered duplicates by cassandra.
