[jira] [Closed] (COUCHDB-505) Erlang code path prefers older versions of CouchDB

["Jan Lehnardt (Closed) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COUCHDB-505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jan Lehnardt closed COUCHDB-505.
--------------------------------

    Resolution: Won't Fix

Declaring this won't fix now that we are >1.0
                
> Erlang code path prefers older versions of CouchDB
> --------------------------------------------------
>
>                 Key: COUCHDB-505
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-505
>             Project: CouchDB
>          Issue Type: Bug
>    Affects Versions: 0.11
>         Environment: any system where different minor versions of CouchDB have been installed to the same --prefix
>            Reporter: Adam Kocoloski
>            Assignee: Adam Kocoloski
>             Fix For: 1.2
>
>
> We're using ERL_LIBS to add PREFIX/lib/couchdb/erlang/lib to the code path on CouchDB startup.  If multiple versions of CouchDB have been installed,  that directory might look something like
> mochiweb-r97
> ibrowse-1.5.2
> couch-0.9.0
> couch-0.10.0a
> ...
> In this case, we want the system to use beams from couch-0.10.0a, but apparently Erlang's code loader sorts couch-0.9.0 higher.  
> One solution would be to fall back to explicitly adding specific app directories to the code path using -pa.
> An elegant solution would be to make sure that our app directories are named in such a way that they automatically sort correctly in the code loader.  I'm not sure this is really possible, though, particularly when a user is installing development versions built from source next to released versions.

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