Last modified: 2011-01-25 00:23:41 UTC

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Bug 13808 - False positives on Special:DoubleRedirects
False positives on Special:DoubleRedirects
Status: RESOLVED INVALID
Product: Wikimedia
Classification: Unclassified
Site requests (Other open bugs)
unspecified
All All
: Normal normal (vote)
: ---
Assigned To: Nobody - You can work on this!
: shell
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2008-04-21 15:15 UTC by Russell Blau
Modified: 2011-01-25 00:23 UTC (History)
3 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Russell Blau 2008-04-21 15:15:43 UTC
When a cached double-redirect is fixed, the item continues to display on [[Special:DoubleRedirects]] until the next time the cache is updated, but the item is struck-out using <s> and </s> tags, as per Bug #10985.

Within the past week or so, however, some entries have remained un-struck even though they appear to have been fixed and are no longer double-redirects.  This can best be seen on [[w:en:Special:DoubleRedirects]], as this wiki has a much larger collection of double-redirects than any other.
Comment 1 Russell Blau 2008-04-22 13:02:45 UTC
On further study, the bug appears to be placing pages on [[Special:DoubleRedirects]] that are not double-redirects at all (at least not at the time the listing is generated).  Example:  currently, [[w:en:Special:DoubleRedirects]] includes the following entry:

# [[w:en:Football World Cup 2006 - Asian Qualification Groups]] →‎ [[w:en:2006 FIFA World Cup (qualification AFC)]] →‎ [[w:en:2006 FIFA World Cup qualification (AFC)]] 

Checking the page histories reveals that this was a double-redirect that actually was fixed back in July 2006, and neither of the two redirect pages has been edited at all since that time.

Just a hunch, but this may be related to the changes made to fix Bug #10931.
Comment 2 Jelte (WebBoy) 2008-05-05 17:32:41 UTC
This bug is caused by false entries in the redirect table:

mysql> select page_id from page where page_namespace = 0 and page_title = 'Football_World_Cup_2006_-_Asian_Qualification_Groups';
+---------+
| page_id |
+---------+
| 2922110 |
+---------+
1 row in set (0.00 sec)

mysql> select rd_namespace, rd_title from redirect where rd_from = 2922110;
+--------------+-----------------------------------------+
| rd_namespace | rd_title                                |
+--------------+-----------------------------------------+
|            0 | 2006_FIFA_World_Cup_(qualification_AFC) |
+--------------+-----------------------------------------+
1 row in set (0.01 sec)

mysql> select page_id from page where page_namespace = 0 and page_title = 'Smackdown!';
+---------+
| page_id |
+---------+
| 1058156 |
+---------+
1 row in set (0.01 sec)

mysql> select rd_namespace, rd_title from redirect where rd_from = 1058156;
+--------------+------------+
| rd_namespace | rd_title   |
+--------------+------------+
|            0 | SmackDown! |
+--------------+------------+
1 row in set (0.37 sec)

(Toolserver database)
Comment 3 Siebrand Mazeland 2008-08-18 17:30:58 UTC
Domain: MediaWiki/Special pages -> Wikimedia/Site requests
Keywords: shell
Comment 4 Roan Kattouw 2009-12-12 15:58:49 UTC
I checked out these entries, and the quoted entries are correct (the pages are indeed redirects). If you find any incorrect entries, report them.

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