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From Nirmallya Mukherjee <>
Subject Re: How to create an additional cluster in Cassandra exclusively for Analytics Purpose
Date Fri, 04 Mar 2016 09:43:34 GMT
You cannot have a cluster within a cluster in C*. In my opinion you have 2 choices -1. Have
a DC3 and replicate data to it. In your app code, include a DC aware RR policy so that the
coordinator is chosen from DC1 or DC2 and not from DC3.2. In case you want to have a different
cluster for OLAP and search then modify your app DAO to insert into two separate clusters.
In this case for all practical purposes these are 2 completely independent C* clusters with
no relationship with each other.
Option 1 is the preferred choice in my view.

    On Friday, 4 March 2016 1:57 PM, Bhuvan Rawal <> wrote:

We would like to create an additional C* data center for batch processing using spark on CFS.
We would like to limit this DC exclusively for Spark operations and would like to continue
the Application Servers to continue fetching data from OLTP. 
Is there any way to configure the same? 

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