Could not find or load main class org.apache.hadoop.util.VersionInfo
It is a problem of environmental variables setup. Apparently, I didnt find one which can work until NOW. I was trying on 2.6.4. Here is what we should do
export HADOOP_HOME=/home/centos/HADOOP/hadoop-2.6.4export HADOOP_INSTALL=$HADOOP_HOMEexport HADOOP_MAPRED_HOME=$HADOOP_HOMEexport HADOOP_COMMON_HOME=$HADOOP_HOMEexport HADOOP_HDFS_HOME=$HADOOP_HOMEexport YARN_HOME=$HADOOP_HOMEexport HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/nativeexport PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/binexport HADOOP_CONF_DIR=$HADOOP_HOMEexport HADOOP_PREFIX=$HADOOP_HOMEexport HADOOP_LIBEXEC_DIR=$HADOOP_HOME/libexecexport JAVA_LIBRARY_PATH=$HADOOP_HOME/lib/native:$JAVA_LIBRARY_PATHexport HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoop
Add these into your .bashrc and dont forget to do
source ~/.bashrc
I think your problem will be solved as was mine.
You probably did not follow the instructions correctly. Here are some things to try and help us / you diagnose this:
In the shell that you ran
hadoop version
, runexport
and show us the list of relevant environment variables.Show us what you put in the
/usr/local/hadoop/etc/hadoop/hadoop-env.sh
file.If neither of the above gives you / us any clues, then find and use a text editor to (temporarily) modify the
hadoop
wrapper shell script. Add the line "set -xv" somewhere near the beginning. Then runhadoop version
, and show us what it produces.