https://bugzilla.wikimedia.org/show_bug.cgi?id=32853
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Bug #: 32853
Summary: DBA backend is broken in MW 1.18 ($dir is an array)
Product: MediaWiki
Version: 1.18.0
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: General/Unknown
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
In MediaWiki 1.18, when you set DBA as the main caching mechanism
($wgMainCacheType = CACHE_DB) you'll run into an error.
In includes/objectcache/DBABagOStuff.php on line 17 you check if $dir === false
or not. In my case it isn't, so you assign its value to $this->mFile =
"$dir/mw-cache-" . wfWikiID();.
The problem is that from v1.18 on the $dir is an array.
I got the following when I print_r'd the $dir variable in the first line of the
__construct function: Array ( [class] => DBABagOStuff ).
Of course in this case the $this->mFile = "$dir/mw-cache-" . wfWikiID(); line
will be broken also and that's why later MW cannot open the DBA cache.
For an ugly workaround I forced the $wgTempDirectory to be assigned to the $dir
variable:
if ( $dir === false || is_array($dir) ) {
global $wgTmpDirectory;
$dir = $wgTmpDirectory;
}
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