RE: ZooKeeper ensemble. Size and Impact ?

@zookeeper.apache.org Cc: Alexander Shraer Subject: RE: ZooKeeper ensemble. Size and Impact ? Thanks to all of you guys. I will try it out. By any chance does anyone know when would the final/stable version of 3.5.0 be available. Because I can see it's in 3.5.0-alpha. Thanks, Srini -Original Message- From

RE: ZooKeeper ensemble. Size and Impact ?

[mailto:srinivasan.veerapand...@ericsson.com] Sent: 13 July 2015 15:01 To: user@zookeeper.apache.org Subject: RE: ZooKeeper ensemble. Size and Impact ? Rakesh Garry, Thanks for the information and details. From both of your responses I can see that, more failures will cause drop of quorum automatically

RE: ZooKeeper ensemble. Size and Impact ?

: ZooKeeper ensemble. Size and Impact ? Hi Srini, ZooKeeper service will be available if 'quorum' number of servers are running(simple majority voting factors). I could see, one of the reason to get a majority vote is to avoid split-brain problem. In a network failure we don't want the two

Re: ZooKeeper ensemble. Size and Impact ?

Veerapandian [mailto:srinivasan.veerapand...@ericsson.com ] Sent: 13 July 2015 15:01 To: user@zookeeper.apache.org Subject: RE: ZooKeeper ensemble. Size and Impact ? Rakesh Garry, Thanks for the information and details.  From both of your responses I can see

RE: ZooKeeper ensemble. Size and Impact ?

:12 AM To: user@zookeeper.apache.org; Srinivasan Veerapandian Cc: Alexander Shraer Subject: Re: ZooKeeper ensemble. Size and Impact ? Thank you Alex for the info. Hi Srini, I think Observer would be fine for your case. Probably you can try it out. -Rakesh On 13 Jul 2015 21:41, Alexander Shraer

Re: ZooKeeper ensemble. Size and Impact ?

-Original Message- From: Srinivasan Veerapandian [mailto:srinivasan.veerapand...@ericsson.com ] Sent: 13 July 2015 15:01 To: user@zookeeper.apache.org Subject: RE: ZooKeeper ensemble. Size and Impact ? Rakesh Garry, Thanks for the information and details. From both of your responses I can

RE: ZooKeeper ensemble. Size and Impact ?

Hi, I claim no ZK expertise but did have a similar scenario so I'll share my conclusion and then the ZK experts can point out how wrong I am. :) The odd number of servers requirement is because a ZK consensus can only be formed by an *absolute* majority of nodes in the ensemble. With an even

RE: ZooKeeper ensemble. Size and Impact ?

Hi Srini, ZooKeeper service will be available if 'quorum' number of servers are running(simple majority voting factors). I could see, one of the reason to get a majority vote is to avoid split-brain problem. In a network failure we don't want the two parts of the system to continue as usual.