[erlang-questions] Network partitions and Quorom

Joseph Norton <>
Thu Aug 18 17:54:05 CEST 2011


There is an Erlang application bundled as a part of Hibari called partition-detector on GitHub.

https://github.com/hibari/partition-detector

There is some documentation for this particular application embedded in this document on GitHub.

http://hibari.github.com/hibari-doc/hibari-sysadmin-guide.en.html#partition-detector

This application was originally developed and deployed for Mnesia-based systems.  If this looks helpful to you, contact me off list for further details.

thanks,


Joseph Norton




On Aug 19, 2011, at 12:29 AM, Steve Strong wrote:

> Hi,
> 
> After a lot of googling, I haven't found a clear answer to something that I'd have thought was a solved problem in the Erlang community - I've got an application that needs to run on one and only one of N potential hosts, where N is fixed.  I'm hoping that there's a standard library I can use for this, but I've not found one yet.
> 
> Currently, we are using a simple distributed app as built into the Erlang release but I don't believe this will handle network partitions in the way that I need (i.e., if node A becomes partitioned from B & C, I could end up with my app running on both A and one of B & C).
> 
> Use of gen_leader is a possibility, although I'm unclear how (if) it handles network partitions at the moment - if it does have a concept of quorum then it will be ideal, but a quick google and read of the code left me unsure if it handled partitions or not.
> 
> Any advice on either gen_leader or other options would be much appreciated.
> 
> Cheers,
> 
> Steve
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