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https://issues.apache.org/jira/browse/COUCHDB-355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12733058#action_12733058
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Adam Kocoloski commented on COUCHDB-355:
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This bug is complicated by our use of configuration directories. At the moment
runtime updates to the configuration are persisted in the last file in the
config chain. If the config KV we want to delete is in another file we're
going to have trouble finding it.
> deleting a _config key sets the value to ""
> -------------------------------------------
>
> Key: COUCHDB-355
> URL: https://issues.apache.org/jira/browse/COUCHDB-355
> Project: CouchDB
> Issue Type: Bug
> Components: Database Core
> Affects Versions: 0.9
> Reporter: Adam Kocoloski
> Assignee: Adam Kocoloski
>
> couch_config:delete/2 is implemented as
> delete(Section, Key) ->
> set(Section, Key, "").
> I think that's misleading -- a key with an empty value is not the same as no
> key at all. Consider the case of an update_notification process. To me,
> deleting that key should just send an EOF to the process. Instead Couch
> sends the EOF and then tries to spawn an os_process to execute "". The end
> result is the same, but a few things crash along the way.
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