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From Abdul Patel <abd786...@gmail.com>
Subject Re: Question About Reaper
Date Sun, 20 May 2018 17:04:02 GMT
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.gupta01@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
>

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