Valdimir, Good scenario. As Mahadev points out quorum and HA are slightly different animals. If I am correct, the Quorum also has the correctness attribute, which needs more than one server - the 2n+1 requirement.
Looks like what you are looking for is the traditional HA primitive with an active-active configuration. You might still be able to use Zookeeper, with leader election and state management, but you will need at least 3 processes - (at least)one Zookeeper, two server processes. Cheers <k/> P.S : May be we should capture this pattern in ZooKeeper. (May be we already have, as I am coming up to speed) |-----Original Message----- |From: Mahadev Konar [mailto:[EMAIL PROTECTED] |Sent: Tuesday, November 25, 2008 9:27 AM |To: firstname.lastname@example.org |Subject: Re: 2 Server Cluster !? | |Hi Valdimir, | Its not possible to run a Zookeeeper quorum of 2 such that if one dies |the |other one continues to run and server clients. The whole idea of |zookeeper |is its high reliability and the guarantee's it provides. |http://wiki.apache.org/hadoop/ZooKeeper/Tao | |So, its not possible to run zookeeper as you state. | |mahadev | | |On 11/25/08 7:33 AM, "Vladimir Bobic" <[EMAIL PROTECTED]> wrote: | |> Ahoy everyone, |> |> I'm interested to know if there is anyway to run 2 servers cluster in |which: |> - if 1 server fails other one continues to serve clients. |> - when failed server is back, force elections to favored server |> I'm aware that there is possibility for both servers to work |> independently not knowing for each other, |> difference that could immerge is not issue. |> |> Regards, |> Vladimir