[Neo] Error on startup

Ryan Levering rrlevering at gmail.com
Fri Feb 12 15:49:13 CET 2010


Yeah, I get that error all the time when my web server hotswaps.

On Feb 12, 2010, at 9:30 AM, Rick Bullotta wrote:

> Figured it out. It occurs if you try to create two instances of EmbeddedGraphDatabase that point to the same path.  Need to clean up our singleton usage a bit.
> 
> 
> -----Original Message-----
> From: user-bounces at lists.neo4j.org [mailto:user-bounces at lists.neo4j.org] On Behalf Of Mattias Persson
> Sent: Friday, February 12, 2010 9:27 AM
> To: Neo user discussions
> Subject: Re: [Neo] Error on startup
> 
> I don't recognize that exception. Could you please provide the full
> stack trace for further information.
> 
> 2010/2/12 Rick Bullotta <rick.bullotta at burningskysoftware.com>:
>> On startup, if no neo database exists, we create one and populate it with
>> some initial content.  However, it recently started throwing an error:
>> 
>> 
>> 
>> Could not create data source [nioneodb], see nested exception for cause of
>> error.
>> 
>> 
>> 
>> .and the nested error is:
>> 
>> 
>> 
>> java.nio.channels.OverlappingFileLockException
>> 
>> 
>> 
>> AFAIK, there is only one thread active doing any Neo work, since it is in
>> the WebApp's context listener.
>> 
>> 
>> 
>> Any thoughts?
>> 
>> 
>> 
>> Thanks,
>> 
>> 
>> 
>> Rick
>> 
>> 
>> 
>> _______________________________________________
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>> User at lists.neo4j.org
>> https://lists.neo4j.org/mailman/listinfo/user
>> 
> 
> 
> 
> -- 
> Mattias Persson, [mattias at neotechnology.com]
> Neo Technology, www.neotechnology.com
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