Re: ZOOKEEPER-702

[Flavio Junqueira]

Hi Gustavo, I don't know if Abmar was using Cassandra as reference (it doesn't sound like from the jira comments), but I followed the paper. Feel free to double-check it if you have a chance. Also, note that it won't replace the current mechanism with phi accrual, but it will enable the use of phi accrual. -Flavio On Nov 24, 2010, at 10:06 AM, Gustavo Niemeyer wrote: Hi Flavio, Hi, ZOOKEEPER-702 changes the way we do failure detection in ZooKeeper, and it is an important change. I'd like to see it committed soon (it has been sitting there for a while), but at the same time I'd like to make sure that no one has an issue with it. If this is interesting to you or affects you in any way, please consider having a look at it soon. As a minor comment, even though Cassandra claims to implement the Phi accrual failure detector, last time I looked they didn't really implement the algorithm which is in the paper.  If someone is going to implement something similar, I suggest looking at the paper rather than Cassandra's code. -- Gustavo Niemeyer http://niemeyer.net http://niemeyer.net/blog http://niemeyer.net/twitter flavio junqueira   research scientist   f...@yahoo-inc.com direct +34 93-183-8828   avinguda diagonal 177, 8th floor, barcelona, 08018, es phone (408) 349 3300    fax (408) 349 3301