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From Surbhi Gupta <surbhi.gupt...@gmail.com>
Subject Re: Priority for cassandra nodes in cluster
Date Sun, 13 Nov 2016 01:14:51 GMT
If u ask conceptually, it is possible but not recommended.
If u really want to do it use the initial token setting and provide the
broad range to the nodes where u want more data. But u need to understand
about the replication factor consideration, if u keep rf as 3 on a 3 node
cluster that means all nodes has all the data.

On Saturday, November 12, 2016, sat <sathish.alwar@gmail.com> wrote:

> Hi,
>
> Thanks all for your valuable suggestion.
>
> Thanks and Regards
> A.SathishKumar
>
> On Sat, Nov 12, 2016 at 2:59 PM, Ben Bromhead <ben@instaclustr.com
> <javascript:_e(%7B%7D,'cvml','ben@instaclustr.com');>> wrote:
>
>> +1 w/ Benjamin.
>>
>> However if you wish to make use of spare hardware capacity, look to
>> something like mesos DC/OS or kubernetes. You can run multiple services
>> across a fleet of hardware, but provision equal resources to Cassandra and
>> have somewhat reliable hardware sharing mechanisms.
>>
>> On Sat, 12 Nov 2016 at 14:12 Jon Haddad <jonathan.haddad@gmail.com
>> <javascript:_e(%7B%7D,'cvml','jonathan.haddad@gmail.com');>> wrote:
>>
>>> Agreed w/ Benjamin.  Trying to diagnose issues in prod will be a
>>> nightmare.  Keep your DB servers homogeneous.
>>>
>>> On Nov 12, 2016, at 1:52 PM, Benjamin Roth <benjamin.roth@jaumo.com
>>> <javascript:_e(%7B%7D,'cvml','benjamin.roth@jaumo.com');>> wrote:
>>>
>>> 1. From a 15 year experience of running distributed Services: dont Mix
>>> Services on machines if you don't have to. Dedicate each server to a single
>>> task if you can afford it. It is easier to manage and reduces risks in case
>>> of overload or failure
>>> 2. You can assign a different number of tokens for each node by setting
>>> this in Cassandra.yaml before you bootstrap that node
>>>
>>> Am 12.11.2016 22:48 schrieb "sat" <sathish.alwar@gmail.com
>>> <javascript:_e(%7B%7D,'cvml','sathish.alwar@gmail.com');>>:
>>>
>>>> Hi,
>>>>
>>>> We are planning to install 3 node cluster in production environment. Is
>>>> it possible to provide weightage or priority to the nodes in cluster.
>>>>
>>>> Eg., We want more more records to be written to first 2 nodes and less
>>>> to the 3rd node. We are thinking of this approach because we want to
>>>> install other IO intensive messaging server in the 3rd node, in order to
>>>> reduce the load we are requesting for this approach.
>>>>
>>>>
>>>> Thanks and Regards
>>>> A.SathishKumar
>>>>
>>>>
>>> --
>> Ben Bromhead
>> CTO | Instaclustr <https://www.instaclustr.com/>
>> +1 650 284 9692
>> Managed Cassandra / Spark on AWS, Azure and Softlayer
>>
>
>
>
> --
> A.SathishKumar
> 044-24735023
>

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