找不到或无法加载主类 org.apache.hadoop.mapreduce.v2.app.MRAppMaster

找不到或无法加载主类 org.apache.hadoop.mapreduce.v2.app.MRAppMaster

Application application_1558512564390_0003 failed 2 times due to AM Container for appattempt_1558512564390_0003_000002 exited with exitCode: 1
Failing this attempt.Diagnostics: [2019-05-29 08:06:23.227]Exception from container-launch.
Container id: container_1558512564390_0003_02_000001
Exit code: 1
[2019-05-29 08:06:23.232]Container exited with a non-zero exit code 1. Error file: prelaunch.err.
Last 4096 bytes of prelaunch.err :
Last 4096 bytes of stderr :
错误: 找不到或无法加载主类 org.apache.hadoop.mapreduce.v2.app.MRAppMaster
[2019-05-29 08:06:23.233]Container exited with a non-zero exit code 1. Error file: prelaunch.err.
Last 4096 bytes of prelaunch.err :
Last 4096 bytes of stderr :
错误: 找不到或无法加载主类 org.apache.hadoop.mapreduce.v2.app.MRAppMaster
For more detailed output, check the application tracking page: http://dataxone-cdh1:8088/cluster/app/application_1558512564390_0003 Then click on links to logs of each attempt.
. Failing the application.

在界面运行：

hadoop classpath

记录下信息

修改 $HADOOP_HOME/etc/hadoop/yarn-site.xml文件.增加

<property>
        <name>yarn.application.classpath</name>
        <value>hadoop classpath返回信息</value>
</property>

重启yarn