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From Utkarsh Sengar <utkarsh2...@gmail.com>
Subject Re: Motivation for a DHT ring
Date Thu, 30 Jun 2016 17:49:10 GMT
With fault tolerance and reliability, it also gives a faster lookup
mechanism across various nodes in a cluster.
Amazon's dynamo paper might be a better read to understand the reasoning
behind a DHT based system:
http://www.allthingsdistributed.com/files/amazon-dynamo-sosp2007.pdf

On Wed, Jun 29, 2016 at 11:48 PM, Jens Rantil <jens.rantil@tink.se> wrote:

> Some reasons I can come up with:
> - it would be hard to have tunable read/consistencies/replicas when
> interfacing with a file system.
> - data locality support would require strong coupling to the distributed
> file system interface (if at all possible given that certain sstables
> should live on the same data node).
> - operator complexity both administering a distributed file system as well
> as a Cassandra cluster. This was a personal reason why I chose Cassandra
> instead of HBase for a project.
>
> Cheers,
> Jens
>
> Den ons 29 juni 2016 13:01jean paul <researcherfr@gmail.com> skrev:
>
>>
>>
>> 2016-06-28 22:29 GMT+01:00 jean paul <researcherfr@gmail.com>:
>>
>>> Hi all,
>>>
>>> Please, What is the motivation for choosing a DHT ring in cassandra? Why
>>> not use a normal parallel or distributed file system that supports
>>> replication?
>>>
>>> Thank you so much for clarification.
>>>
>>> Kind regards.
>>>
>>
>> --
>
> Jens Rantil
> Backend Developer @ Tink
>
> Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
> For urgent matters you can reach me at +46-708-84 18 32.
>



-- 
Thanks,
-Utkarsh

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