com.mysql.jdbc.exceptions.jdbc4.CommunicationsException from JBoss background connection checker

Issue

• We are trying to import a large amount of data from mysql. when ever that transaction time would be reach more than 25 seconds,Jboss server will throw 503 error to webserver. I am attaching some of the logs below.

    WARN  [org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker] Unexpected error in ping
    java.lang.reflect.InvocationTargetException
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:597)
         at org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker.isValidConnection(MySQLValidConnectionChecker.java:83)
         at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnectionFactory.isValidConnection(BaseWrapperManagedConnectionFactory.java:458)
         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
         at java.lang.Thread.run(Thread.java:619)
    Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure. Last packet sent to the server was 1 ms ago.
         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
         at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
         at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
         at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3009)
         at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2895)
         at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3438)
         at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1951)
         at com.mysql.jdbc.ConnectionImpl.pingInternal(.MysqlIO.reuseAndReadPacket(MysqlIO.java:2906)