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https://issues.apache.org/jira/browse/COUCHDB-505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Joseph Davis updated COUCHDB-505:
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Skill Level: Regular Contributors Level (Easy to Medium)
> 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: 0.12
>
>
> 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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