$i = $this->getRandomNonLagged( $currentLoads, $wiki );
if ( $i === false && count( $currentLoads ) != 0 ) {
# All slaves lagged. Switch to read-only mode
$i = $this->getRandomNonLagged( $currentLoads, $wiki );
if ( $i === false && count( $currentLoads ) != 0 ) {
# All slaves lagged. Switch to read-only mode