如果报错no suitable driver found for jdbc
是spark没有合适的jdbc连接驱动，需要下一个jdbc connector的jar包放到spark路径下并把次路径放到spark/conf/spark-env.sh的SPARK_CLASSPATH里
如：export SPARK_CLASSPATH=$SPARK_CLASSPATH:/root/spark/mysql-connector-java-5.1.35.jar
如果报ERROR 1130: Host ’x′ is not allowed to connect to this MySQL server则是对面MySQL做了ip限制，本机无权限访问mysql
grant all privileges on database.* to root@‘ ‘ identified by ‘user‘ with grant option;
flush privileges;
原文：http://www.cnblogs.com/cenkai/p/5120056.html