我正在尝试运行一个oozie工作流，它应该执行mrv1 hadoop作业。
从cloudera quickstart vm 5.4.2-0开始。将其配置为使用mrv1（附加在底部）。
但工作流失败：

Failing Oozie Launcher, Main class [org.apache.oozie.action.hadoop.MapReduceMain], main() threw exception, org/apache/hadoop/yarn/exceptions/YarnException
java.lang.NoClassDefFoundError: org/apache/hadoop/yarn/exceptions/YarnException
    at org.apache.oozie.action.hadoop.MapReduceMain.run(MapReduceMain.java:58)
    at org.apache.oozie.action.hadoop.LauncherMain.run(LauncherMain.java:46)
    at org.apache.oozie.action.hadoop.MapReduceMain.main(MapReduceMain.java:38)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.oozie.action.hadoop.LauncherMapper.map(LauncherMapper.java:228)
    at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
    at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:417)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:332)
    at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
    at org.apache.hadoop.mapred.Child.main(Child.java:262)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.yarn.exceptions.YarnException
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

奇怪的是，当我查看类路径时，它从正确的位置加载jar文件；即 /usr/lib/hadoop-0.20-mapreduce -----配置----
将oozie配置为使用mapreduce而不是Yarn：
更改了cdh中oozie的配置：mapreduce服务 YARN 至 MapReduce 通过设置oozie-site.xml值更改了中oozie的配置： <property> <name>oozie.service.HadoopAccessorService.jobTracker.whitelist</name> <value>quickstart.cloudera:8021</value> </property> 使用替代方法更改了tomcat配置： sudo alternatives --config oozie-tomcat-deployment -- chose tomcat-conf.http.mr1 已将hadoop配置为使用mapreduce： sudo alternatives --config hadoop-conf -- chose conf.cloudera.mapreduce