Wangshen (Peter)
2014-Feb-15 07:26 UTC
[Gluster-users] question about brain split or network partition
Hi, All I'm working on distributed storage system analysis, including glusterfs. With some information on internet and done some test, I found that when brain split or network partition occurs, both side of the system can accept new write requests. It seems gluster can not guarantee consistency in this situation. According to CAP theorem(http://en.wikipedia.org/wiki/CAP_theorem), it seems gluster is an AP system. I can't find any value information about my question, so could you explain these below, or give me some valuable link. 1. Is gluster an AP system? Whether there have some way in gluster to guarantee data consistency when the two situation occurs? 2. How does gluster handle brain split and network partition? 3. Does gluster treat brain split and network partition as the same situation? Thanks! Peter
Joe Julian
2014-Feb-15 15:49 UTC
[Gluster-users] question about brain split or network partition
You can set quorum for volumes and/or servers, trading consistency for availability if that's more appropriate for your use case. On February 14, 2014 11:26:26 PM PST, "Wangshen (Peter)" <peter.w at huawei.com> wrote:>Hi, All >I'm working on distributed storage system analysis, including >glusterfs. >With some information on internet and done some test, I found that when >brain split or network partition occurs, both side of the system can >accept new write requests. It seems gluster can not guarantee >consistency in this situation. >According to CAP theorem(http://en.wikipedia.org/wiki/CAP_theorem), it >seems gluster is an AP system. > >I can't find any value information about my question, so could you >explain these below, or give me some valuable link. >1. Is gluster an AP system? Whether there have some way in gluster to >guarantee data consistency when the two situation occurs? >2. How does gluster handle brain split and network partition? >3. Does gluster treat brain split and network partition as the same >situation? > > >Thanks! > >Peter >_______________________________________________ >Gluster-users mailing list >Gluster-users at gluster.org >http://supercolony.gluster.org/mailman/listinfo/gluster-users-- Sent from my Android device with K-9 Mail. Please excuse my brevity. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20140215/21679e66/attachment.html>