Update NIOConnector.java
Update NIOConnector.java

import java.util.concurrent.atomic.AtomicLong;
magicdoom/Mycat-Server,ccvcd/Mycat-Server,magicdoom/Mycat-Server,ccvcd/Mycat-Server,magicdoom/Mycat-Server,ccvcd/Mycat-Server,magicdoom/Mycat-Server,ccvcd/Mycat-Server