> But when I run the same query with consistency level as Quorum, it is taking > ~2.3 seconds. It feels as if querying of the nodes are in sequence. No.
As Sankalp says look for GC issues. If none then take a look at how much data you are pulling back, and tell us what sort of query you are using. Cheers ----------------- Aaron Morton Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 11/07/2013, at 7:10 AM, sankalp kohli <kohlisank...@gmail.com> wrote: > The coordinator node has to merge the results from 2 nodes and the request is > done in parallel. I have seen lot of GC pressure with range queries because > of tombstones. > Can you see logs to see if there is lot of GC going on. Also try to have GC > log enabled. > > > On Wed, Jul 10, 2013 at 9:57 AM, Baskar Duraikannu > <baskar.duraikannu...@gmail.com> wrote: > Just adding few other details to my question. > > - We are using RandomPartitioner > - 256 virtual nodes configured. > > > On Wed, Jul 10, 2013 at 12:54 PM, Baskar Duraikannu > <baskar.duraikannu...@gmail.com> wrote: > I have a 3 node cluster with RF=3. All nodes are running. I have a table > with 39 rows and ~44,000 columns evenly spread across 39 rows. > > When I do range slice query on this table with consistency of one, it returns > the data back in about ~600 ms. I tried the same from all of the 3 nodes,no > matter which node I ran it from, queries were answered in 600 ms for > consistency level of one. > > But when I run the same query with consistency level as Quorum, it is taking > ~2.3 seconds. It feels as if querying of the nodes are in sequence. > > Is this normal? > > -- > Regards, > Baskar Duraikannu > > >
