正在准备做Spark SQL external data source与关系型数据库交互的部分，参考下Sqoop2是如何操作关系型数据库的。
下载地址：http://archive.cloudera.com/cdh5/cdh/5/
下载并安装：
cd /home/spark/app/
wget http://archive.cloudera.com/cdh5/cdh/5/sqoop2-1.99.3-cdh5.0.0.tar.gz
tar -zxvf sqoop2-1.99.-cdh5.0.0.tar.gz
cd sqoop2-1.99.-cdh5.0.0
注：由于本地采用的hadoop是2.3.0-cdh5.0.0版本，故本案例中使用的是cdh5.0.0对应的sqoop版本；
添加sqoop2到系统环境变量中：
export SQOOP2_HOME=/home/spark/app/sqoop2-1.99.-cdh5.0.0
export CATALINA_BASE=$SQOOP2_HOME/server
export PATH=.:$SQOOP2_HOME/bin:$PATH
拷贝mysql驱动包到$SQOOP2_HOME/server/lib下
cp mysql-connector-java-5.1.-bin.jar $SQOOP2_HOME/server/lib/
修改配置文件：
$SQOOP2_HOME/server/conf/sqoop.properties
org.apache.sqoop.submission.engine.mapreduce.configuration.directory=/home/spark/app/hadoop-2.3.0-cdh5.0.0/etc/hadoop
$SQOOP2_HOME/server/conf/catalina.properties
common.loader=${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar,${catalina.home}/../lib/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/common/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/common/lib/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/hdfs/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/hdfs/lib/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/mapreduce/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/mapreduce/lib/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/tools/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/tools/lib/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/yarn/*.jar,/home/spark/app/hadoop-2.3.0-cdh5.0.0/share/hadoop/yarn/lib/*.jar
如果想修改tomcat的端口号等信息可以在$SQOOP2_HOME/server/conf/server.xml中进行设置；
启停sqoop-server:
$SQOOP2_HOME/bin/sqoop.sh server start
$SQOOP2_HOME/bin/sqoop.sh server stop
或者
$SQOOP2_HOME/bin/sqoop2-server start
$SQOOP2_HOME/bin/sqoop2-server stop
验证是否启动成功：
方式一：jps查看进程: Bootstrap
方式二：http://hadoop000:12000/sqoop/version
方式二：http://hadoop000:12000/sqoop/version
方式三：wget -qO - hadoop000:12000/sqoop/version
启动sqoop客户端：
$SQOOP2_HOME/bin/sqoop.sh client
或者
$SQOOP2_HOME/bin/sqoop2-shell
为客户端配置服务器：
sqoop:> set server --host hadoop000 --port --webapp sqoop
查看服务器端信息：
sqoop:> show server --all