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From Tupshin Harper <tups...@tupshin.com>
Subject Re: Setting up DSE 4.5 for mixed workload with BYOH
Date Thu, 03 Jul 2014 01:00:23 GMT
For performance reasons, you shouldn't enable vnodes on any Cassandra/DSE
datacenter that is doing hadoop analytics workloads.  Other DCs in the
cluster can use vnodes.

-Tupshin
On Jul 2, 2014 5:50 PM, "Clint Kelly" <clint.kelly@gmail.com> wrote:

> Hi everyone,
>
> Apologies if this is the incorrect forum for a question like this.
>
> I am going to set up a mixed-workload (real-time and analytics)
> installation of DSE 4.5 using bring-your-own Hadoop (BYOH).  We are
> using CDH 5.0.
>
> I was reviewing the installation instructions, and I came across the
> following comment here:
>
> http://www.datastax.com/documentation/datastax_enterprise/4.5/datastax_enterprise/byoh/byohInstall.html
>
> "6. Observe workload isolation best practices. Do not enable vnodes."
>
> Does this mean that the use of vnodes is not compatible with a
> mixed-workload installation?  Or with BYOH?  I am confused why this
> would be the case.
>
> If anyone can clarify, I would greatly appreciate it.
>
> Best regards,
> Clint
>

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