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From Drew Gross <drew.a.gr...@gmail.com>
Subject Re: ClassNotFoundException while running quick start guide on Windows.
Date Wed, 22 Jun 2011 04:26:00 GMT
Thanks Jeff, it was a problem with JAVA_HOME. I have another problem
now though, I have this:

$JAVA:  /cygdrive/c/Program Files/Java/jdk1.6.0_26/bin/java
$JAVA_HEAP_MAX:  -Xmx1000m
$HADOOP_OPTS:  -Dhadoop.log.dir=C:\Users\Drew
Gross\Documents\Projects\discom\hadoop-0.21.0\logs
-Dhadoop.log.file=hadoop.log -Dhadoop.home.dir=C:\Users\Drew
Gross\Documents\Projects\discom\hadoop-0.21.0\ -Dhadoop.id.str=
-Dhadoop.root.logger=INFO,console
 -Djava.library.path=/cygdrive/c/Users/Drew
Gross/Documents/Projects/discom/hadoop-0.21.0/lib/native/
-Dhadoop.policy.file=hadoop-policy.xml
$CLASS:  org.apache.hadoop.util.RunJar
Exception in thread "main" java.lang.NoClassDefFoundError:
Gross\Documents\Projects\discom\hadoop-0/21/0\logs
Caused by: java.lang.ClassNotFoundException:
Gross\Documents\Projects\discom\hadoop-0.21.0\logs
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class:
Gross\Documents\Projects\discom\hadoop-0.21.0\logs.  Program will
exit.

(This is with some extra debugging info added by me in bin/hadoop)

It looks like the windows style file names are causing problems,
especially the spaces. Has anyone encountered this before, and know
how to fix? I tried escaping the spaces and surrounding the file paths
with quotes (not at the same time), but that didn't help.

Drew


On Tue, Jun 21, 2011 at 6:24 AM, madhu phatak <phatak.dev@gmail.com> wrote:
>
> I think the jar have some issuses where its not able to read the Main class
> from manifest . try unjar the jar and see in Manifest.xml what is the main
> class and then run as follows
>
>  bin/hadoop jar hadoop-*-examples.jar <Full qualified main class> grep input
> output 'dfs[a-z.]+'
> On Thu, Jun 16, 2011 at 10:23 AM, Drew Gross <drew.a.gross@gmail.com> wrote:
>
> > Hello,
> >
> > I'm trying to run the example from the quick start guide on Windows and I
> > get this error:
> >
> > $ bin/hadoop jar hadoop-*-examples.jar grep input output 'dfs[a-z.]+'
> > Exception in thread "main" java.lang.NoClassDefFoundError:
> > Caused by: java.lang.ClassNotFoundException:
> >        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> >        at java.security.AccessController.doPrivileged(Native Method)
> >        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> >        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> >        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> >        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> > Could not find the main class: .  Program will exit.
> > Exception in thread "main" java.lang.NoClassDefFoundError:
> > Gross\Documents\Projects\discom\hadoop-0/21/0\logs
> > Caused by: java.lang.ClassNotFoundException:
> > Gross\Documents\Projects\discom\hadoop-0.21.0\logs
> >        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> >        at java.security.AccessController.doPrivileged(Native Method)
> >        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> >        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> >        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> >        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> > Could not find the main class:
> > Gross\Documents\Projects\discom\hadoop-0.21.0\logs.  Program will exit.
> >
> > Does anyone know what I need to change?
> >
> > Thank you.
> >
> > From, Drew
> >
> > --
> > Forget the environment. Print this e-mail immediately. Then burn it.
> >



--
Forget the environment. Print this e-mail immediately. Then burn it.

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