Hello Have you checked the log file to see what's happening during startup ? What caused the rolling restart? Did you preform an upgrade or change a config?
> On Jun 18, 2014, at 5:40 AM, Alain RODRIGUEZ <arodr...@gmail.com> wrote: > > Hi guys > > Using 1.2.11, when I try to rolling restart the cluster, any node I restart > makes the whole cluster cpu load to increase, reaching a "red" state in > opscenter (load from 3-4 to 20+). This happens once the node is back online. > > The restarted node uses 100 % cpu for 5 - 10 min and sometimes drop mutations. > > I have tried to throttle handoff to 256 (instead of 1024), yet it doesn't > seems to help that much. > > Disks are not the bottleneck. PARNEW GC increase a bit, but nothing > problematic I think. > > Basically, what could be happening on node restart ? What is taking that much > CPU on every machine ? There is no steal or iowait. > > What can I try to tune ? >
