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From Jordan Zimmerman <jor...@jordanzimmerman.com>
Subject Re: cross data center leader election?
Date Fri, 07 Nov 2014 22:39:02 GMT
This comes up all the time. The short answer: I wouldn’t do it. But, please read Camille
Fournier’s post regarding something similar:


On November 7, 2014 at 5:34:11 PM, Ben Hsu (ben.hsu@criticalmedia.com) wrote:

Hello Zookeepers  

We would like to use Zookeeper for master election, with the master and the  
failover in two different data centers. Concretely, what we are thinking of  
is this:  

Zookeeper runs in one data center (potentially AWS or other cloud provider)  
Process 1 runs in data center 1, in one location  
Process 2 runs in data center 2, in a second location  

Process 1 and Process 2 both connect to ZK using an election recipe.  

Process 1 runs normally, and Process 2 runs as a standby. When Process 1  
dies Process 2 will detect the death (using ZK election) and take over.  

Our question is, is this feasible with the latencies and levels of  
reliability we can expect to see. Has anyone on this list tried this? What  
was your experience?  

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