Did you configure JAVA_HOME in file hadoop-env.sh? Simon
On Thu, Jul 5, 2012 at 1:02 PM, Ying Huang <huangyi...@gmail.com> wrote: > According to your suggestion, I try following command, but still fail: > -------------------------------------------------------------------- > root@ubuntu32:/usr/lib/hadoop# export > JAVA_HOME=/usr/lib/jvm/java-7-openjdk-i386/jre > > 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 > total 20 > drwxr-xr-x 5 root root 4096 Jul 3 20:43 . > drwxr-xr-x 5 root root 4096 Jul 3 20:43 .. > lrwxrwxrwx 1 root root 50 May 2 20:14 ASSEMBLY_EXCEPTION -> > ../../java-7-openjdk-common/jre/ASSEMBLY_EXCEPTION > drwxr-xr-x 2 root root 4096 Jul 3 20:43 bin > drwxr-xr-x 8 root root 4096 Jul 3 20:43 lib > drwxr-xr-x 4 root root 4096 Jul 3 20:43 man > lrwxrwxrwx 1 root root 50 May 2 20:14 THIRD_PARTY_README -> > ../../java-7-openjdk-common/jre/THIRD_PARTY_README > root@ubuntu32:/usr/lib/hadoop# > > -------------------------------------------------------------------- > > On 07/05/2012 11:53 AM, Simon wrote: > > I think you should set JAVA_HOME=/usr/lib/jvm/java-7-openjdk-i386/jre > > JAVA_HOME is the base location of java, where it can find the java > executable $JAVA_HOME/bin/java > > Regards, > Simon > > > On Thu, Jul 5, 2012 at 12:42 PM, Ying Huang <huangyi...@gmail.com> 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 >> >> > > > -- > > > Best Regards > Ying Huang > >
