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Hadoop, mail # user - JAVA_HOME is not set


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Ying Huang 2012-07-05, 16:42
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Re: JAVA_HOME is not set
Arpit Gupta 2012-07-05, 17:04
JAVA_HOME is set for user root but not for user hdfs. Make sure JAVA_HOME is set for user hdfs and then try the command again.

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Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On Jul 5, 2012, at 9:42 AM, Ying Huang wrote:

> Hello,
>    I am installing hadoop according to this page: https://cwiki.apache.org/BIGTOP/how-to-install-hadoop-distribution-from-bigtop.html
>    I think I have successfully installed hadoop on my Ubuntu 12.04 x64.
>    Then I go to step Running Hadoop, bellowing is my operation step, why it prompts that my JAVA_HOME is not set?
> ------------------------------------------------------------------------------------------
> root@ubuntu32:/usr/lib/hadoop# export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-i386/jre/bin/java
> root@ubuntu32:/usr/lib/hadoop# sudo -u hdfs hadoop namenode -format
> Error: JAVA_HOME is not set.
> root@ubuntu32:/usr/lib/hadoop# ls $JAVA_HOME -al
> -rwxr-xr-x 1 root root 5588 May  2 20:14 /usr/lib/jvm/java-7-openjdk-i386/jre/bin/java
> root@ubuntu32:/usr/lib/hadoop#
>
> ------------------------------------------------------------------------------------------
>
>
> --
>
>
> Best Regards
> Ying Huang
>

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Simon 2012-07-05, 16:53
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Leo Leung 2012-07-05, 17:14
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Ying Huang 2012-07-05, 17:02
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Simon 2012-07-05, 17:06
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Ying Huang 2012-07-05, 17:27