[Gluster-devel] raft consensus algorithm and glusterfs

[Prashanth Pai]

Hi,

There is already an ongoing effort to use RAFT for synchronous replication. You can find the repo here:

http://review.gluster.org/#/q/project:glusterfs-nsr,n,z
https://forge.gluster.org/new-style-replication

Regards,
 -Prashanth Pai

----- Original Message -----
From: "Sharuzzaman Ahmat Raslan" <sharuzzaman at gmail.com>
To: "Gluster Devel" <gluster-devel at nongnu.org>
Sent: Thursday, February 6, 2014 1:53:45 PM
Subject: [Gluster-devel] raft consensus algorithm and glusterfs

Hi all, 

I'm not sure if you all have heard about Raft Consensus Algorithm, but from the paper, video, and slides on the Internet, I think that this algorithm can help to solve a lot of distributed cases in GlusterFS. 

For example, right now the initial mounting of the filesystem can use any nodes IP, and later when the application needs to read or write the data, it will randomly picked from the peer list 

With Raft, one of the node will act as a master, after successful election among the peers. With one master in place, the read/write can directly goes to the master, which will replicate to other follower, according to the distribution requirement (distribute, replicate, stripe, distribute-replicate, etc) 

I also believe that with this method (having a master), the lock issue happen with samba could be reduced or resolved. 

For more information, please visit 
http://raftconsensus.github.io/ 
https://www.youtube.com/watch?v=YbZ3zDzDnrw 

and the paper 
http://ramcloud.stanford.edu/raft.pdf 

Thanks. 


-- 
Sharuzzaman Ahmat Raslan 

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