The high cpu is probably the hints getting replayed slamming the write path
Slowing it down with the hint throttle may help It’s not instant. > On Jan 27, 2020, at 6:05 PM, Erick Ramirez <flightc...@gmail.com> wrote: > > >> Increase the max_hint_window_in_ms setting in cassandra.yaml to more than 3 >> hours, perhaps 6 hours. If the issue still persists networking may need to >> be tested for bandwidth issues. > > Just a note of warning about bumping up the hint window without understanding > the pros and cons. Be aware that doubling it means: > you'll end up doubling the size of stored hints in the hints_directory > there'll be twice as much hints to replay when node(s) come back online > There's always 2 sides to fiddling with the knobs in C*. Cheers!
