Thanks Abdul On Mon, May 21, 2018 at 6:28 AM Abdul Patel <abd786...@gmail.com> wrote:
> We have a paramater in reaper yaml file called > repairManagerSchrdulingIntervalSeconds default is 10 seconds , i tested > with 8,6,5 seconds and found 5 seconds optimal for my environment ..you go > down further but it will have cascading effects in cpu and memory > consumption. > So test well. > > > On Monday, May 21, 2018, Surbhi Gupta <surbhi.gupt...@gmail.com> wrote: > >> Thanks a lot for your inputs, >> Abdul, how did u tune reaper? >> >> On Sun, May 20, 2018 at 10:10 AM Jonathan Haddad <j...@jonhaddad.com> >> wrote: >> >>> FWIW the largest deployment I know about is a single reaper instance >>> managing 50 clusters and over 2000 nodes. >>> >>> There might be bigger, but I either don’t know about it or can’t >>> remember. >>> >>> On Sun, May 20, 2018 at 10:04 AM Abdul Patel <abd786...@gmail.com> >>> wrote: >>> >>>> Hi, >>>> >>>> I recently tested reaper and it actually helped us alot. Even with our >>>> small footprint 18 node reaper takes close to 6 hrs.<intially took 13 hrs >>>> ,i was able to tune it 50%>. But it really depends on number nodes. For >>>> example if you have 4 nodes then it runs on 4*256<vnodes> =1024 segements , >>>> so for your env. Ut will be 256*144 close to 36k segements. >>>> Better test on poc box how much time it takes and then proceed further >>>> ..i have tested so far in 1 dc only , we can actually have seperate reaper >>>> instance handling seperate dc but havent tested it yet. >>>> >>>> >>>> On Sunday, May 20, 2018, Surbhi Gupta <surbhi.gupt...@gmail.com> wrote: >>>> >>>>> Hi, >>>>> >>>>> We have a cluster with 144 nodes( 3 datacenter) with 256 Vnodes . >>>>> When we tried to start repairs from opscenter then it showed >>>>> 1.9Million ranges to repair . >>>>> And even after doing compaction and strekamthroughput to 0 , opscenter >>>>> is not able to help us much to finish repair in 9 days timeframe . >>>>> >>>>> What is your thought on Reaper ? >>>>> Do you think , Reaper might be able to help us in this scenario ? >>>>> >>>>> Thanks >>>>> Surbhi >>>>> >>>>> >>>>> -- >>> Jon Haddad >>> http://www.rustyrazorblade.com >>> twitter: rustyrazorblade >>> >>> >>> >> >>
