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max k-safety
Posted: Wed Apr 16, 2014 4:17 pm
by nnani
Hello All,
What is the maximum number of k-safety value we can configure.
Lets say I have a 10 node cluster, what will be the best k-safety and what will be the max k-safety
Thanks
Re: max k-safety
Posted: Wed Apr 16, 2014 4:38 pm
by id10t
Hi!
[DELETED]
Re: max k-safety
Posted: Thu Apr 17, 2014 3:54 am
by JimKnicely
What do you guys think about leaving k safety at 1 when the number of nodes > 4?
Re: max k-safety
Posted: Thu Apr 17, 2014 1:44 pm
by NorbertKrupa
After we had 2 nodes down in our 8 node environment, I've always wanted to go to K-safety of 2.
Re: max k-safety
Posted: Sun Apr 20, 2014 5:45 am
by cbennett
I know they exist, but we typically don't recommend K=2 because the ROI just really isn't there. If you really demand 100% uptime, a DR solution is your best alternative, vs. adding that much more data into your existing cluster.
Re: max k-safety
Posted: Fri Apr 25, 2014 8:33 pm
by BearFan
We briefly went to k-safety 2 and pretty hastily beat a retreat back to 1. I/O performance took a bit of a hit at 2 and thinking it through, even at 1, you can have more than 1 node go down (depending on which node it it). When I taked to Vertica support, they recommended avoiding 2 as well.