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(DefaultLogTargetFactoryManager.java:113)
     [exec]     at org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
     [exec]     at org.apache.avalon.excalibur.logger.LogKitLoggerManager.setupTargetFactoryManager(LogKitLoggerManager.java:436)
     [exec]     at org.apache.avalon.excalibur.logger.LogKitLoggerManager.configure(LogKitLoggerManager.java:400)
     [exec]     at org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java: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???
     

2010/12/7 Petrucci Andreas <[EMAIL PROTECTED]>:
>
> 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(DefaultLogTargetFactoryManager.java:113)
>     [exec]     at org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
>     [exec]     at org.apache.avalon.excalibur.logger.LogKitLoggerManager.setupTargetFactoryManager(LogKitLoggerManager.java:436)
>     [exec]     at org.apache.avalon.excalibur.logger.LogKitLoggerManager.configure(LogKitLoggerManager.java:400)
>     [exec]     at org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java: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.

It is seems that you're trying to run ant with java5. Make sure your
JAVA_HOME is set properly.
--
  Take care,
Konstantin (Cos) Boudnik

2010/12/7 Petrucci Andreas <[EMAIL PROTECTED]>:
>
> 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(DefaultLogTargetFactoryManager.java:113)
>     [exec]     at org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
>     [exec]     at org.apache.avalon.excalibur.logger.LogKitLoggerManager.setupTargetFactoryManager(LogKitLoggerManager.java:436)
>     [exec]     at org.apache.avalon.excalibur.logger.LogKitLoggerManager.configure(LogKitLoggerManager.java:400)
>     [exec]     at org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java: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???
>

yes, my JAVA_HOME is properly set. however in hadoop 0.20.2 that i'm using when i run from HADOOP_HOME the command ant compile-contrib -Dlibhdfs=1 -Dcompile.c++=1  then the tail of the output is the following :

    [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c: In function 'hdfsUtime':
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1488: error: 'JNIEnv' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1488: error: 'env' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1490: error: 'errno' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1494: error: 'jobject' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1494: error: expected ';' before 'jFS'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1497: error: expected ';' before 'jPath'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1498: error: 'jPath' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1503: error: 'jlong' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1503: error: expected ';' before 'jmtime'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1504: error: expected ';' before 'jatime'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1507: error: 'jthrowable' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1507: error: expected ';' before 'jExc'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1508: error: 'jExc' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1508: error: 'jFS' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1510: error: 'jmtime' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1510: error: 'jatime' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c: In function 'hdfsGetHosts':
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1533: error: 'JNIEnv' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1533: error: 'env' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1535: error: 'errno' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1539: error: 'jobject' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1539: error: expected ';' before 'jFS'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1542: error: expected ';' before 'jPath'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1543: error: 'jPath' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1547: error: 'jvalue' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1547: error: expected ';' before 'jFSVal'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1548: error: 'jthrowable' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1548: error: expected ';' before 'jFSExc'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1549: error: 'jFSVal' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1549: error: 'jFSExc' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1549: error: 'jFS' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1559: error: expected ';' before 'jFileStatus'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1563: error: 'jobjectArray' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1563: error: expected ';' before 'jBlockLocations'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1564: error: expected ';' before 'jVal'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1565: error: expected ';' before 'jExc'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1566: error: 'jVal' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1566: error: 'jExc' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1570: error: 'jFileStatus' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1577: error: 'jBlockLocations' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1581: error: 'jsize' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1581: error: expected ';' before 'jNumFileBlocks'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1583: error: 'jNumFileBlocks' undeclared (first use in this function)
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1597: error: expected ';' before 'jFileBlock'
     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1600: error: expected ';' bef

Try this and see if it works

Open the build.xml file and the add env JAVA_HOME in compile-core-native
target. After adding the change should look like below

<exec dir="${build.native}" executable="sh" failonerror="true">
     <env key="OS_NAME" value="${os.name}"/>
     <env key="JAVA_HOME" value="/usr/java"/>
     <env key="OS_ARCH" value="${os.arch}"/>
     <env key="JVM_DATA_MODEL" value="${sun.arch.data.model}"/>
     <env key="HADOOP_NATIVE_SRCDIR" value="${native.src.dir}"/>
     <arg line="${native.src.dir}/configure"/>
</exec>
On 12/7/10 5:07 PM, "[EMAIL PROTECTED]"
<[EMAIL PROTECTED]> wrote:

> From: Petrucci Andreas <[EMAIL PROTECTED]>
> Date: Wed, 8 Dec 2010 02:06:26 +0200
> To: <[EMAIL PROTECTED]>
> Subject: RE: HDFS and libhfds
>
>
> yes, my JAVA_HOME is properly set. however in hadoop 0.20.2 that i'm using
> when i run from HADOOP_HOME the command ant compile-contrib -Dlibhdfs=1
> -Dcompile.c++=1  then the tail of the output is the following :
>
>     [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c: In
> function 'hdfsUtime':
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1488:
> error: 'JNIEnv' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1488:
> error: 'env' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1490:
> error: 'errno' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1494:
> error: 'jobject' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1494:
> error: expected ';' before 'jFS'
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1497:
> error: expected ';' before 'jPath'
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1498:
> error: 'jPath' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1503:
> error: 'jlong' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1503:
> error: expected ';' before 'jmtime'
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1504:
> error: expected ';' before 'jatime'
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1507:
> error: 'jthrowable' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1507:
> error: expected ';' before 'jExc'
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1508:
> error: 'jExc' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1508:
> error: 'jFS' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1510:
> error: 'jmtime' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1510:
> error: 'jatime' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c: In
> function 'hdfsGetHosts':
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1533:
> error: 'JNIEnv' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1533:
> error: 'env' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1535:
> error: 'errno' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1539:
> error: 'jobject' undeclared (first use in this function)
>      [exec] /home/hy59045/sfakiana/hadoop-0.20.2/src/c++/libhdfs/hdfs.c:1539:
> error: expected ';' before 'jFS'
iCrossing Privileged and Confidential Information
This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information of iCrossing. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message.

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, "[EMAIL PROTECTED]"
<[EMAIL PROTECTED]> wrote:

> From: Edward Capriolo <[EMAIL PROTECTED]>
> Date: Tue, 7 Dec 2010 17:22:03 -0500
> To: <[EMAIL PROTECTED]>
> Subject: Re: HDFS and libhfds
>
> 2010/12/7 Petrucci Andreas <[EMAIL PROTECTED]>:
>>
>> 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.
iCrossing Privileged and Confidential Information
This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information of iCrossing. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message.

thanks for the replies, this solved my problems

http://mail-archives.apache.org/mod_mbox/hadoop-common-user/200909.mbox/%[EMAIL PROTECTED]%3E

...i think i should write a post in my blog about this night with hdfs, libhdfs and fuse...

> Date: Tue, 7 Dec 2010 22:44:39 -0700
> Subject: Re: HDFS and libhfds
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
>
> 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, "[EMAIL PROTECTED]"
> <[EMAIL PROTECTED]> wrote:
>
> > From: Edward Capriolo <[EMAIL PROTECTED]>
> > Date: Tue, 7 Dec 2010 17:22:03 -0500
> > To: <[EMAIL PROTECTED]>
> > Subject: Re: HDFS and libhfds
> >
> > 2010/12/7 Petrucci Andreas <[EMAIL PROTECTED]>:
> >>
> >> 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
     

Feel free to update https://issues.apache.org/jira/browse/HDFS-1519 if
you find it suitable.
2010/12/7 Petrucci Andreas <[EMAIL PROTECTED]>:
>
> thanks for the replies, this solved my problems
>
> http://mail-archives.apache.org/mod_mbox/hadoop-common-user/200909.mbox/%[EMAIL PROTECTED]%3E
>
> ...i think i should write a post in my blog about this night with hdfs, libhdfs and fuse...
>
>> Date: Tue, 7 Dec 2010 22:44:39 -0700
>> Subject: Re: HDFS and libhfds
>> From: [EMAIL PROTECTED]
>> To: [EMAIL PROTECTED]
>>
>> 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, "[EMAIL PROTECTED]"
>> <[EMAIL PROTECTED]> wrote:
>>
>> > From: Edward Capriolo <[EMAIL PROTECTED]>
>> > Date: Tue, 7 Dec 2010 17:22:03 -0500
>> > To: <[EMAIL PROTECTED]>
>> > Subject: Re: HDFS and libhfds
>> >
>> > 2010/12/7 Petrucci Andreas <[EMAIL PROTECTED]>:
>> >>
>> >> 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