Bug: T162121
Change-Id: I05b539922508d5e73979ccc8ea1c148b16dd13db
$totalcnt = $rescnt;
$category = $this->cat;
DeferredUpdates::addCallableUpdate( function () use ( $category ) {
- $category->refreshCounts();
+ # Avoid excess contention on the same category (T162121)
+ $dbw = wfGetDB( DB_MASTER );
+ $name = __METHOD__ . ':' . md5( $this->mName );
+ $scopedLock = $dbw->getScopedLockAndFlush( $name, __METHOD__, 1 );
+ if ( $scopedLock ) {
+ $category->refreshCounts();
+ }
} );
} else {
// Case 3: hopeless. Don't give a total count at all.