第一步。下载、解压、配置环境变量：
官网下载sqoop1.99.3
http://mirrors.cnnic.cn/apache/sqoop/1.99.3/
将sqoop解压到目标文件夹，我的是
/home/fulong/Sqoop/sqoop-1.99.3-bin-hadoop200
配置环境变量：
export SQOOP_HOME=/home/fulong/Sqoop/sqoop-1.99.3-bin-hadoop200
export PATH=$PATH:$SQOOP_HOME/bin
export CATALINA_BASE=$SQOOP_HOME/server
export LOGDIR=$SQOOP_HOME/logs/
第二步，改动配置文件：
改动配置文件catalina.properties：
vim $SQOOP_HOME/server/conf/catalina.properties
在文件里找到common.loader，在其后加入hadoop相关jar包路径，终于效果例如以下
common.loader=${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar,${catalina.home}/../lib/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/common/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/common/lib/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/hdfs/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/hdfs/lib/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/mapreduce/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/mapreduce/lib/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/tools/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/tools/lib/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/yarn/*.jar,/home/fulong/Hadoop/hadoop-2.2.0/share/hadoop/yarn/lib/*.jar
改动配置文件sqoop.properties：
