Author: vicente.aguilar
Description:
On some of our wikis, on Special:Properties some properties appear twice (see attachment), once with "0 uses" and once with "X uses" (X>0, the real usage data). When clicking on the Property:XYZ link they both go to the same article with the property definition, whether it has been defined or not (red link). Depending on which one of the two occurrences ("0 uses" or "X uses") appears first on Special:Properties, we don't get any values when #asking for this property. This happens for properties of any type.
Sometimes a full refresh (SMW_refreshData -ftpv, then another -v) fixes the issue, sometimes it doesn't.
This is difficult to reproduce, we have several wikis with same version (OS, MW, SMW), configuration and content (partially) and we can have the issue in one but not the others. Content is exported/imported or synced using Special:Push, no copy-paste or manual sync.
ATM we're using MW 1.19.3, SMW 1.8.0.4 with CentOS 6.2 (PHP 5.3.3, MySQL 5.1.61).
Version: master
Severity: major
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=48707