Hi Deva, Thanks for your response. The file etc/hadoop/yarn-env.sh has the following entries: export HADOOP_MAPRED_HOME=/usr/local/hadoop export HADOOP_COMMON_HOME=/usr/local/hadoop export HADOOP_HDFS_HOME=/usr/local/hadoop export YARN_HOME=/usr/local/hadoop export HADOOP_CONF_DIR=/usr/local/hadoop/etc/hadoop export YARN_CONF_DIR=$HADOOP_CONF_DIR
Is it expected to have these variables in profile file of the Linux user?? I am not using Windows client. My client is running on Mac and the cluster is running on Linux versions. Cheers, Subroto Sanyal On Jun 5, 2012, at 10:50 AM, Devaraj k wrote: > Can you check all the hadoop environment variables are set properly in which > the app master is getting launching. > > > If you are submitting from windows, this might be the issue > https://issues.apache.org/jira/browse/MAPREDUCE-4052. > > Thanks > Devaraj > From: Subroto [ssan...@datameer.com] > Sent: Tuesday, June 05, 2012 2:14 PM > To: mapreduce-user@hadoop.apache.org > Subject: java.lang.NoClassDefFoundError: > org/apache/hadoop/mapreduce/v2/app/MRAppMaste > > Hi, > > While running MR Jobs over a yarn cluster I keep on getting: > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/hadoop/mapreduce/v2/app/MRAppMaster > Caused by: java.lang.ClassNotFoundException: > org.apache.hadoop.mapreduce.v2.app.MRAppMaster > 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) > Could not find the main class: > org.apache.hadoop.mapreduce.v2.app.MRAppMaster. Program will exit. > > My client is running from a different environment from where the cluster is > running. > If I submit a job from the cluster environment; it runs successfully. > > I have verified the property yarn.application.classpath before submitting it > from the client. The value is set to: > $HADOOP_CONF_DIR,$HADOOP_COMMON_HOME/*,$HADOOP_COMMON_HOME/lib/*,$HADOOP_HDFS_HOME/*,$HADOOP_HDFS_HOME/lib/*,$HADOOP_MAPRED_HOME/*,$HADOOP_MAPRED_HOME/lib/*,$YARN_HOME/*,$YARN_HOME/lib/* > > Please let me know if I am missing anything. > > Cheers, > Subroto Sanyal
