https://bugzilla.wikimedia.org/show_bug.cgi?id=49391
Web browser: ---
Bug ID: 49391
Summary: FSFileBackend doPrepareInternal() should recover from
mkdir failure when directory exists (race)
Product: MediaWiki
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: File management
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Mobile Platform: ---
Browsers doing multiple http requests at once for items linked to (thumbs) in a
file description page are going to set off the race condition from time to time
in FSFBackend:
if ( !wfMkdirParents( $dir ) ) { // make directory and its parents
$status->fatal( 'directorycreateerror', $params['dir'] ); // fails on
races
Why not check if the error was 'File exists' and proceed in that case? The
debug log entry looks like this:
[FSFileBackend] mkdir() [<a href='function.mkdir'>function.mkdir</a>]: File
exists
If the status object doesn't have a good representation of the type of error
condition, you could always double check if the dir is suddenly there before
giving up.
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