phoenix-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From James Taylor <jamestay...@apache.org>
Subject Re: Salt Number
Date Fri, 08 Sep 2017 16:56:31 GMT
Hi Pradheep,
Would you be able to describe your use case and why you're salting? We
really only recommend salting if you have write hotspotting. Otherwise, it
increases the overall load on your cluster.
Thanks,
James

On Fri, Sep 8, 2017 at 9:13 AM, Pradheep Shanmugam <
Pradheep.Shanmugam@infor.com> wrote:

> Hi,
>
>
> As the salt number cannot be changed later, what is is best number we can
> give in different cases for cluster with 10 region servers with say 6 cores
> in each.
>
> Should we consider cores while deciding the number..
>
> In some places i see number can be in the range 1-256 and in some place i
> see that it is equal to the number of region servers..can the number in the
> multiples of region server(say 20, 30 etc)
>
>
> read heavy large(several 100 millions) table with range scans
>
> write heavy large table with less frequent range scans
>
> large table with hybrid load with range scans
>
>
> Thanks,
>
> Pradheep
>

Mime
View raw message