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From Sudhir Vallamkondu <Sudhir.Vallamko...@icrossing.com>
Subject Re: common-user Digest 8 Dec 2010 00:07:01 -0000 Issue 1611
Date Wed, 08 Dec 2010 03:58:39 GMT
I second Ed's answer. Try unistalling whatever you installed and start
fresh. Whenever I see this error when trying to installing a native bridge,
this solution always worked for me.


On 12/7/10 5:07 PM, "common-user-digest-help@hadoop.apache.org"
<common-user-digest-help@hadoop.apache.org> wrote:

> From: Edward Capriolo <edlinuxguru@gmail.com>
> Date: Tue, 7 Dec 2010 17:22:03 -0500
> To: <common-user@hadoop.apache.org>
> Subject: Re: HDFS and libhfds
> 
> 2010/12/7 Petrucci Andreas <petrucci_2005@hotmail.com>:
>> 
>> hello there, im trying to compile libhdfs in order  but there are some
>> problems. According to http://wiki.apache.org/hadoop/MountableHDFS  i have
>> already installes fuse. With ant compile-c++-libhdfs -Dlibhdfs=1 the buils is
>> successful.
>> 
>> However when i try ant package -Djava5.home=... -Dforrest.home=... the build
>> fails and the output is the below :
>> 
>>  [exec]
>>     [exec] Exception in thread "main" java.lang.UnsupportedClassVersionError:
>> Bad version number in .class file
>>     [exec]     at java.lang.ClassLoader.defineClass1(Native Method)
>>     [exec]     at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
>>     [exec]     at
>> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>>     [exec]     at
>> java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>>     [exec]     at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
>>     [exec]     at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>>     [exec]     at java.security.AccessController.doPrivileged(Native Method)
>>     [exec]     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>>     [exec]     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>>     [exec]     at
>> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
>>     [exec]     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
>>     [exec]     at
>> org.apache.avalon.excalibur.logger.DefaultLogTargetFactoryManager.configure(D
>> efaultLogTargetFactoryManager.java:113)
>>     [exec]     at
>> org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.j
>> ava:201)
>>     [exec]     at
>> org.apache.avalon.excalibur.logger.LogKitLoggerManager.setupTargetFactoryMana
>> ger(LogKitLoggerManager.java:436)
>>     [exec]     at
>> org.apache.avalon.excalibur.logger.LogKitLoggerManager.configure(LogKitLogger
>> Manager.java:400)
>>     [exec]     at
>> org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.j
>> ava:201)
>>     [exec]     at
>> org.apache.cocoon.core.CoreUtil.initLogger(CoreUtil.java:607)
>>     [exec]     at org.apache.cocoon.core.CoreUtil.init(CoreUtil.java:169)
>>     [exec]     at org.apache.cocoon.core.CoreUtil.<init>(CoreUtil.java:115)
>>     [exec]     at
>> org.apache.cocoon.bean.CocoonWrapper.initialize(CocoonWrapper.java:128)
>>     [exec]     at
>> org.apache.cocoon.bean.CocoonBean.initialize(CocoonBean.java:97)
>>     [exec]     at org.apache.cocoon.Main.main(Main.java:310)
>>     [exec] Java Result: 1
>>     [exec]
>>     [exec]   Copying broken links file to site root.
>>     [exec]
>>     [exec]
>>     [exec] BUILD FAILED
>>     [exec] /apache-forrest-0.8/main/targets/site.xml:175: Warning: Could not
>> find file /hadoop-0.20.2/src/docs/build/tmp/brokenlinks.xml to copy.
>>     [exec]
>>     [exec] Total time: 4 seconds
>> 
>> BUILD FAILED
>> /hadoop-0.20.2/build.xml:867: exec returned: 1
>> 
>> 
>> any ideas what's wrong???
>> 
> 
> I never saw this usage:
> -Djava5.home
> Try
> export JAVA_HOME=/usr/java
> 
> " Bad version number in .class file " means you are mixing and
> matching java versions somehow.


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