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From Adam Kocoloski <kocol...@apache.org>
Subject Re: CouchDB failing to open socket 5984 ?
Date Wed, 16 Sep 2009 15:35:59 GMT
On Sep 16, 2009, at 9:31 AM, Jan Lehnardt wrote:

> On 16 Sep 2009, at 15:24, Adam Kocoloski wrote:
>
>> On Sep 16, 2009, at 8:44 AM, Jan Lehnardt wrote:
>>
>>> On 16 Sep 2009, at 14:21, Adam Kocoloski wrote:
>>>
>>>> On Sep 16, 2009, at 4:00 AM, Brian Candler wrote:
>>>>
>>>>> Does this make any sense to you? It looks like it's reading  
>>>>> couch.beam from
>>>>> couch-0.11.0a815641 (correct), but couch.app from  
>>>>> couch-0.9.0a767213 (?!).
>>>>
>>>> Bingo, there's the problem.  It looks like Erlang's code loader  
>>>> wasn't prepared for double-digit minor versions, and it considers  
>>>> 0.9.* as newer than 0.1* (including 0.10 and 0.11).
>>>>
>>>> This may be a serious problem for the 0.10 release, as anyone who  
>>>> upgrades from 0.9.x to 0.10.0 using the same install prefix may  
>>>> end up with a crash.  Thanks again,
>>>
>>> We had this popping up on IRC today, again. I agree this is  
>>> serious. Is there anything we can do on install time that checks  
>>> for older versions?
>>
>> After some more thought I realized that this isn't a problem for  
>> 0.10.  In 0.10 we use the old startup procedure that explicitly  
>> adds individual ebin directories to the code path.  In trunk we  
>> switched to adding the entire PREFIX/lib/couchdb/erlang/lib  
>> directory to ERL_LIBS, and thus triggered the issue with the code  
>> loader and our versioning system.
>
> FWIW, the IRC incident update to trunk, which is 0.11.0a. Should we  
> open a ticket for this?

https://issues.apache.org/jira/browse/COUCHDB-505

Best, Adam

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