I would guess not. > I know this goes against keeping updates idempotent, There are also issues with consistency. i.e. is the read local or does it happen at the CL level ? And it makes things go slower.
> We currently do things like this in client code, but it would be great to be > able to this on the server side to minimize the chance of race conditions. Sometimes you can write the plus one into a new column and then apply the changes in the reading client thread. Cheers ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 4/04/2013, at 12:48 AM, Drew Kutcharian <d...@venarc.com> wrote: > Hi Guys, > > Are there any short/long term plans to support UPDATE operations that require > read-before-write, such as increment on a numeric non-counter column? > i.e. > > UPDATE CF SET NON_COUNTER_NUMERIC_COLUMN = NON_COUNTER_NUMERIC_COLUMN + 1; > > UPDATE CF SET STRING_COLUMN = STRING_COLUMN + "postfix"; > > etc. > > I know this goes against keeping updates idempotent, but there are times you > need to do these kinds of operations. We currently do things like this in > client code, but it would be great to be able to this on the server side to > minimize the chance of race conditions. > > -- Drew
