I have tried increasing timeout to 10000 but no help. Also verified that there is no network lost packets.
Jaydeep On Wed, Mar 4, 2015 at 12:19 PM, Jan <cne...@yahoo.com> wrote: > 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 helps > Jan/ > > > > 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=3 > Node 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 > > > -- Jaydeep
