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From Will Johnson <w...@attivio.com>
Subject RE: multiple zookeepers - same data directory
Date Thu, 05 Jul 2012 17:34:10 GMT


- will

-----Original Message-----
From: Patrick Hunt [mailto:phunt@apache.org] 
Sent: Thursday, July 05, 2012 1:10 PM
To: user@zookeeper.apache.org
Subject: Re: multiple zookeepers - same data directory

Yes, please file a jira for this.


On Thu, Jul 5, 2012 at 10:01 AM, Camille Fournier <camille@apache.org> wrote:
> There's nothing to prevent this as it stands, no, except user action. 
> A lock file might not be a bad idea.
> C
> On Thu, Jul 5, 2012 at 12:53 PM, Will Johnson <will@attivio.com> wrote:
>> We recently ran into an issue where two zookeepers servers which were 
>> a part of two separate quorums were configured to use the same data 
>> directory.  Interestingly, the zookeeper servers did not seem to 
>> complain and both seemed to work fine until one of them was 
>> restarted.  Once that happened all sort of chaos ensued.  I 
>> understand that this is a misconfiguration should zookeeper complain 
>> about this or do users need to protect themselves in some external 
>> fashion?  Is a simple file lock enough or are there other things I 
>> should take into consideration if it's up to me to handle?
>> I'm happy to file a jira for this as I didn't see any doc related to 
>> it but I wanted to see if I missed something first.
>> -          will

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