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
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
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
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?