[rabbitmq-discuss] Warnings on server startup

Thu Jan 20 00:54:06 GMT 2011

Jon (and Lars):

Would either of you guys have a canned set of repro steps going from a
freshly downloaded RabbitMQ for Windows to the pesky object code out of date
warnings?  I know some of us have seen these now and again on Windows, but
I've been unable to reproduce them on a fresh download and install of the
2.1.1 Windows complete Rabbit package.  Might some of the files have been
moved around or touched after your initial install?

Best regards,
Jerry

Jon Rowland-2 wrote:
> 
> I had the same problem a month or so ago, see the thread "Plug-in out of
> date warnings when starting the RabbitMQ server on Windows".
> 
> I didn't manage to resolve (moved on to something else).
> 
> Regards,
> Jon
> 
> -----Original Message-----
> From: rabbitmq-discuss-bounces at lists.rabbitmq.com
> [mailto:rabbitmq-discuss-bounces at lists.rabbitmq.com] On Behalf Of David
> Wragg
> Sent: 15 October 2010 12:18
> To: Lars Wilhelmsen
> Cc: rabbitmq-discuss at lists.rabbitmq.com
> Subject: Re: [rabbitmq-discuss] Warnings on server startup
> 
> Hi Lars,
> 
> Lars Wilhelmsen <larsw at kredinor.no> writes:
>> I'm a RabbitMQ newbie with a fresh Erlang (5.8.1.1) and RabbitMQ
>> (2.1.0) installation on my Win7-64 laptop.
>>
>> When I start the server with rabbitmq-server.bat, it reports:
>>
>> *WARNING* rabbit: Object code (delegate) out of date
>> [...]
>> *WARNING* rabbit: Object code (worker_pool_sup) out of date
>>
>> What do I have to do to resolve these warnings?
> 
> I think these warnings result from you having erlang object code files
> (.beam files) and erlang source code files (.erl files), and erlang
> noticing that the source code files have been modified after the
> corresponding object code files, therefore the object code files are out
> of date.
> 
> I'm not sure what might have led up to this situation occuring for you -
> it doesn't seem to have been reported before.  But deleting the source
> files in rabbitmq_server-2.1.0\src should fix it - they are not required
> for rabbitmq-server to function.
> 
>> Can it be that
>> RabbitMQ was built against an earlier version of Erlang (5.8.1
>> perhaps) and because of that it reports the warnings?
> 
> We always build RabbitMQ releases with quite an old version of erlang
> anyway, in order to be able to run on a wide range of erlang releases.
> 
> David
> 
> -- 
> David Wragg
> Staff Engineer, RabbitMQ
> SpringSource, a division of VMware
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