异常:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/sqoop/Sqoop
Caused by: java.lang.ClassNotFoundException: org.apache.sqoop.Sqoop at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) 一看就是找不到jar包，这个问题困扰了我1天,各种修改改lib，没用，网上找到的英文资料也是修改lib都没用(版本太新，没有中文资料)。解决办法： 去$SQOOP_HOME/bin下，修改sqoop脚本： 修改前:exec ${Hadoop_COMMON_HOME}/bin/hadoop org.apache.sqoop.Sqoop "$@" 修改后:exec ${HADOOP_COMMON_HOME}/bin/hadoop jar $SQOOP_HOME/lib/sqoop-1.4.3-cdh4.5.0.jar org.apache.sqoop.Sqoop "$@" 由此可见，由于使用了hadoop命令，所以在安装sqoop-1.4.3-cdh4.5.0的机器上必选先安装hadoop
