HI Jaydeep;
- look at the i/o on all three nodes
- Increase the write_request_timeout_in_ms: 10000
- check the time-outs if any on the client inserting the Writes
- check the Network for dropped/lost packets
hope this helpsJan/
On Wednesday, March 4, 2015 12:26 PM, Jaydeep Chovatia
<chovatia.jayd...@gmail.com> wrote:
Hi,
In my test program when I increase load then I keep getting few "write timeout"
from Cassandra say every 10~15 mins. My read:write ratio is 50:50. My reads are
fine but only writes time out.
Here is my Cassandra details:Version: 2.0.11
Ring of 3 nodes with RF=3Node configuration: 24 core + 64GB RAM + 2TB
"write_request_timeout_in_ms: 5000", rest of Cassandra.yaml configuration is
default
I've also checked IO on Cassandra nodes and looks very low (around 5%). I've
also checked Cassandra log file and do not see any GC happening. Also CPU on
Cassandra is low (around 20%). I have 20GB data on each node.
My test program creates connection to all three Cassandra nodes and sends
read+write request randomly.
Any idea what should I look for?
Jaydeep
