On: The Paxos algorithm for consensus in a distributed system

[iradik]

Why isn't there a good open-source paxos implementation out there? Or is there?

[nicolast → iradik]

http://www.arakoon.org uses (Multi-)Paxos. Version 2.0 in development at https://github.com/Incubaid/arakoon (e.g. see https://github.com/Incubaid/arakoon/blob/2.0/src/hope/mp.ml for the state machine implementation).

[stock_toaster → iradik]

https://news.ycombinator.com/item?id=4052123 ?

[jackowayed → iradik]

I think Apache Zookeeper is a Paxos implementation. I've heard very good things about it. Various pieces of Hadoop use it, and I know of people who use it for medium-sized webapps that need a canonical, fault-tolerant configuration system.

[zaa → jackowayed]

Zookeeper uses its own consensus protocol - ZAB (http://wiki.apache.org/hadoop/ZooKeeper/Zab).