def update_put_timestamp(self, timestamp):
        with self.get() as conn:
            conn.execute(
                'UPDATE %s_stat SET put_timestamp = ?'
                ' WHERE put_timestamp < ?' % self.db_type,
                (timestamp, timestamp))
            conn.commit()
Update the put_timestamp.  Only modifies it if it is greater than
dataset/ETHPy150Open openstack/swift/swift/common/db.py/DatabaseBroker.update_put_timestamp