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A J
Asked: 2014-05-09 23:22:40 +0800 CST

How to uninstall or remove Hadoop from Ubuntu ?

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I have installed Hadoop-2.4.0 in my system(14.04), I want to remove it completely and reinstall it. If I have delete the configured folder hadoop, is it enough to remove hadoop in my Ubuntu 14.04 LTS.

14.04

3 Answers

  1. Best Answer

    Actually I just delete the folder hadoop which given permission(shown below) to my HDFS user.

    $ sudo rm -r -f /usr/local/hadoop/

    Previously I extracted hadoop-2.4.0 and given permission for my HDFS user(hadoopuser - HDFS user),

    $ sudo chown -R hadoopuser:hadoop hadoop

    After that I removed user(hadoopuser) and group(hadoop)

    root@ARUL-PC:~# deluser hadoopuser
Removing user `hadoopuser' ...
Warning: group `hadoop' has no more members.
Done.
root@ARUL-PC:~# deluser --group hadoop
Removing group `hadoop' ...
Done.

    Now hadoop-2.4.0 not present in my system.

    Note : In my system, configured hadoop folder is /usr/local/hadoop/.

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  2. You can uninstall hadoop using:

    sudo apt-get purge hadoop-2.4.*

    This will remove all packages and configurations related to hadoop from your system.

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  3. I struggled through this for longer than a while and then decided to share it here:

    The trick is to basically delete all the symlinks pointing back to locations where HDP components reside since that is what causes 80% of the problem. Here is a step by step tutorial for that:

    http://www.yourtechchick.com/hadoop/how-to-completely-remove-and-uninstall-hdp-components-hadoop-uninstall-on-linux-system/

    Hope that helps!

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