When I try to execute any Hadoop commands error pops up saying unable to find or load main class M

+1 vote

I have done the following steps

  1. Extracted the tar.gz into a folder in C:\ ---> C:\hadoop
  2. Created and set the HADOOP_HOME environment variable to C:\hadoop
  3. Updated the PATH environment variable by adding C:\hadoop\bin
  4. Added the JAVA_HOME environment variable and set it to the jdk home folder.
Jul 17, 2018 in Big Data Hadoop by Neha
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+1 vote

The error might be due to the syntax problem of the system username.

1. In this case, I request you to go to Hadoop Directory and  edit /etc/hadoop/hadoop-env.cmd

2. At the end of the file, you will find  set HADOOP_IDENT_STRING=%USERNAME%

3.In this, you can change the file name and rename it, but  make sure it does  NOT have the space eg.:

set HADOOP_IDENT_STRING=myedureka

I hope this answer helps :)

answered Jul 17, 2018 by Frankie
• 9,570 points

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