Re: timeouts on counter tables

2017-08-27 Thread kurt greaves
If every node is a replica it sounds like you've got hardware issues. Have you compared iostat to the "normal" nodes? I assume there is nothing different in the logs on this one node? Also sanity check, you are using DCAwareRoundRobinPolicy? ​

Re: timeouts on counter tables

2017-08-27 Thread Rudi Bruchez
Le 28/08/2017 à 00:11, kurt greaves a écrit : What is your RF? Also, as a side note RAID 1 shouldn't be necessary if you have >1 RF and would give you worse performance 2 + 1 on a backup single node. Consistency one. You're right about RAID 1, if the disk perf is the problem, that might be

Re: timeouts on counter tables

2017-08-27 Thread kurt greaves
What is your RF? Also, as a side note RAID 1 shouldn't be necessary if you have >1 RF and would give you worse performance

timeouts on counter tables

2017-08-27 Thread Rudi Bruchez
Hello, On a 3 nodes cluster (nodes : 48 procs, 32 Go RAM, SSD), I've timeouts on counter table UPDATEs. One node is specifically slow, generating timeouts. IO bound. iotop shows consistently about 300 Mb/s reads, and writes are around 100 ko/s, changing. The keys seem well distributed. The