/** @var int Read from the master/quorum and lock out other writers and locking readers */
const READ_EXCLUSIVE = self::READ_LOCKING | 4; // READ_LOCKING (3) and "FOR UPDATE" (4)
/** @var int Read from the master/quorum and lock out other writers and locking readers */
const READ_EXCLUSIVE = self::READ_LOCKING | 4; // READ_LOCKING (3) and "FOR UPDATE" (4)