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Unable to submit a job

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#1

bash: JarDependencies/MapReduceJarDependencies/MapReduce-1.0-SNAPSHOT.jar: Permission denied

Course: https://www.educative.io/collection/5352985413550080/4876435773718528
Lesson: https://www.educative.io/collection/page/5352985413550080/4876435773718528/5452880774430720

#2

Hi @ANIKET_PATRA
The error message “Permission denied” typically indicates that the user running the command does not have the necessary permissions to access the JAR file. Here are a few steps you can take to troubleshoot and resolve this issue:

  1. Check File Permissions: Ensure that the JAR file you’re trying to execute (MapReduce-1.0-SNAPSHOT.jar) has the correct permissions set. You can use the ls -l command to view the permissions of the file. If necessary, you can change the permissions using the chmod command. For example:

    chmod +x JarDependencies/MapReduceJarDependencies/MapReduce-1.0-SNAPSHOT.jar

  2. Check Path: Verify that the path to the JAR file is correct. If the path is incorrect, the system won’t be able to locate the file.

  3. Check User Permissions: Ensure that the user executing the command has the necessary permissions to access the JAR file and execute Hadoop commands. Depending on your setup, you might need administrative privileges or specific permissions granted to your user account.

  4. Run as Superuser: If you’re encountering permission issues, you can try running the command with superuser privileges using sudo. For example:

    sudo hadoop jar JarDependencies/MapReduceJarDependencies/MapReduce-1.0-SNAPSHOT.jar Driver /cars.data /MyJobResult

    Note: Running commands with superuser privileges should be done cautiously, especially in production environments.

  5. Verify Hadoop Configuration: Ensure that your Hadoop configuration is set up correctly, including the environment variables like HADOOP_HOME and JAVA_HOME.

By addressing these points, you should be able to resolve the permission issue and successfully submit the MapReduce job for execution. If you continue to encounter problems, feel free to provide more details or error messages for further assistance.
I hope it helps. Happy Learning :blush: