Nutch 0.8 java 1.4/1.5

["Håvard W. Kongsgård" <h....@niap.no>]

I am trying to get nutch/hadoop to run on 3 servers with SUSE linux.

I have followed the Nutch Hadoop Tutorial and everything works find (I 
can run bin/hadoop dfs –ls), but when I run “bin/nutch inject crawldb 
urls” I get this error.

Exception in thread "main" java.lang.UnsupportedClassVersionError: 
org/apache/commons/cli/ParseException (Unsupported major.minor version 49.0)

at java.lang.ClassLoader.defineClass0(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:539)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)

at java.net.URLClassLoader.access$100(URLClassLoader.java:55)

at java.net.URLClassLoader$1.run(URLClassLoader.java:194)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:187)

at java.lang.ClassLoader.loadClass(ClassLoader.java:289)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)

at java.lang.ClassLoader.loadClass(ClassLoader.java:235)

at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

at org.apache.nutch.crawl.Injector.inject(Injector.java:138)

at org.apache.nutch.crawl.Injector.main(Injector.java:164)

I have set the JAVA_HOME variable in hadoop-env.sh to 
/usr/java/jdk1.5.0_07/ but nutch still tells me that I use version 48.0 
(java 1.4).

I have also tried to set the JAVA_HOME variable in bin/nutch but with 
the same result.

Re: Nutch 0.8 java 1.4/1.5

[Marko Bauhardt <mb...@media-style.com>]

Hi,
try to export JAVA_HOME in your $HOME/.bashrc and  
$HOME/.bash_profile. You must also export $JAVA_HOME/bin in your  
$PATH variable.
e.g. export PATH=$JAVA_HOME/bin:$PATH.

It is important that you export your $JAVA_HOME/bin before the rest  
of the other $PATH variables. The first Java/bin which is found in  
the $PATH variable is used.
So, do not export JAVA_HOME/bin like this line:
export PATH=$PATH:$JAVA_HOME/bin.

Hope this helps,
Marko




Am 17.07.2006 um 10:42 schrieb Håvard W. Kongsgård:

> I am trying to get nutch/hadoop to run on 3 servers with SUSE linux.
>
> I have followed the Nutch Hadoop Tutorial and everything works find  
> (I can run bin/hadoop dfs –ls), but when I run “bin/nutch inject  
> crawldb urls” I get this error.
>
> Exception in thread "main" java.lang.UnsupportedClassVersionError:  
> org/apache/commons/cli/ParseException (Unsupported major.minor  
> version 49.0)
>
> at java.lang.ClassLoader.defineClass0(Native Method)
>
> at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
>
> at java.security.SecureClassLoader.defineClass 
> (SecureClassLoader.java:123)
>
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
>
> at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
>
> at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
>
> at java.security.AccessController.doPrivileged(Native Method)
>
> at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
>
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
>
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
>
> at org.apache.nutch.crawl.Injector.inject(Injector.java:138)
>
> at org.apache.nutch.crawl.Injector.main(Injector.java:164)
>
> I have set the JAVA_HOME variable in hadoop-env.sh to /usr/java/ 
> jdk1.5.0_07/ but nutch still tells me that I use version 48.0 (java  
> 1.4).
>
> I have also tried to set the JAVA_HOME variable in bin/nutch but  
> with the same result.
>
>