Some information on query plans http://thelastpickle.com/2011/07/04/Cassandra-Query-Plans/
Tl;Dr; Select columns with no start, in the natural Comparator order. Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 25/03/2012, at 2:25 PM, Mohit Anchlia wrote: > I have rows with around 2K-50K columns but when I do a query I only need to > fetch few columns between start and end columns. I was wondering what > performance overhead does it cause by using slice query with start and end > columns? > > Looking at the code it looks like when you give start and end column it goes > in IndexSliceReader logic, but it's hard to tell how much overhead on an > average one would see? Or is it even worth worrying about?