[jira] Commented: (COUCHDB-196) Bug in _all_docs: extra incorrect row returned when ?key= is specified

["Bob Dionne (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COUCHDB-196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12661974#action_12661974 ] 

Bob Dionne commented on COUCHDB-196:
------------------------------------

attached is a simpler test case that exhibits the bug. I stepped into this a bit in a debugger. The AdapterFun (line#-288 in couch_httpd_db) is called twice with oth records "Z" and "a", which the debug statements already confirm. Not too up on the code yet so I'm not sure if it's in couch_httpd_view:make_view_fold_fun or couch_db:enum_docs.  Here's what the state looks like the first time through:

http://gist.github.com/44721



> Bug in _all_docs: extra incorrect row returned when ?key= is specified
> ----------------------------------------------------------------------
>
>                 Key: COUCHDB-196
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-196
>             Project: CouchDB
>          Issue Type: Bug
>          Components: HTTP Interface
>            Reporter: Jason Davies
>         Attachments: collation_ids.diff, collation_test.2.diff, collation_test.diff
>
>
> I first noticed this when attempting to reverse the order of docs displayed in Futon, when listing the design docs.  When the order is reversed, non-design docs are displayed.
> After digging deeper I discovered that querying _all_docs with key="Z" can potentially return two rows, with keys "Z" and "a".
> I will attach a test case to reproduce this.  My locale is set to en_GB.UTF-8, which could be related to this problem.

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