Re: Motivation for a DHT ring

2016-12-23 Thread jean paul
Hi all, Please, i'd like to discuss again this question: *What is the motivation for choosing a DHT ring in cassandra? Why not use a normal parallel or distributed file system that supports replication?* @Utkarsh Sengar: *Where in the Dynamo paper is such argumentation?* Did you mean these

Re: Motivation for a DHT ring

2016-06-30 Thread Utkarsh Sengar
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,

Re: Motivation for a DHT ring

2016-06-30 Thread Jens Rantil
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

Re: Motivation for a DHT ring

2016-06-29 Thread jean paul
2016-06-28 22:29 GMT+01:00 jean paul : > 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. >