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From Jamie Cockrill <jamie.cockr...@gmail.com>
Subject Re: Hadoop installation on Windows
Date Fri, 12 Nov 2010 20:03:04 GMT
Very quick spot:

>From the docs: http://hadoop.apache.org/common/docs/current/commands_manual.html#version
------
version

Prints the version.

Usage: hadoop version
------

you don't need the '--' on the front of the version argument. Will
have a look at the other thing.

Ta

Jamie


On 11 November 2010 17:36, Christopher Worley
<christoph.worley@gmail.com> wrote:
> Hello,
>
> I'm trying to get Hadoop working on Cygwin/Windows XP in
> Pseudo-Distributed Mode.  I downloaded version 0.21.0 and unpacked it
> to a cygwin directory.  I'm following the quickstart directions here:
> http://hadoop.apache.org/common/docs/r0.20.2/quickstart.html
>
>
> I get the following error when I try to check the Hadoop version:
>
>
> $ bin/hadoop --version
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/hadoop/util/PlatformName
> Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.util.PlatformName
>
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
> Could not find the main class: org.apache.hadoop.util.PlatformName.  Program wil
> l exit.
> Unrecognized option: --version
> Could not create the Java virtual machine.
>
>
> I get similar exceptions when I run "start-all.sh", but I am still
> able to browse the web interface for NameNode and JobTracker.
>
> I'm sure has something to do with an installation step that I'm
> missing--some step that windows users have to do, that linux users do
> not.  I did web searches for this problem, but I only found it
> occurring when people were building Hadoop.  I'm not building.
>
> I appreciate any help anyone can give.
>
> Thanks,
> Chris
>

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