Write latency spikes

2013-03-06 Thread Jouni Hartikainen
Hi all, I'm experiencing strange latency spikes when writing and trying to figure out what could cause them. My setup: - 3 nodes, writing at CL.ONE using Hector client, no reads - Writing simultaneously to 3 CFs, inserts with 25h TTL, no deletes, no updates, RF 3 - 2 CFs have small data (row

Re: Read IO

2013-02-21 Thread Jouni Hartikainen
Hi, On Feb 21, 2013, at 7:52 , Kanwar Sangha wrote: > Hi – Can someone explain the worst case IOPS for a read ? No key cache, No > row cache, sampling rate say 512. > > 1) Bloom filter will be checked to see existence of key (In RAM) > 2) Index filer sample (IN RAM) will be checked

Re: Bootstrapping a new node to a virtual node cluster

2013-02-12 Thread Jouni Hartikainen
On Feb 12, 2013, at 18:58 , aaron morton wrote: > Just checking if this sorted it's self out? Well, partially. :) Situation at the moment: >> 1) Is the new node not showing up in the "nodetool status" expected behavior? Not showing still, don't know if should. :) >> 2) Do I have to wait fo

Bootstrapping a new node to a virtual node cluster

2013-02-09 Thread Jouni Hartikainen
Hello all, I have a cluster of three nodes running 1.2.1 and I'd like to increase the capacity by adding a new node. I'm using virtual nodes with 256 tokens and planning to use the same configuration for the new node as well. My cluster looks like this before adding the new node: Status=Up/Dow