Java exception

[Odin Guillermo Caudillo Gallegos <od...@gmail.com>]

Hi, i'm building a code to write files on hdfs, but it gives me the
following error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/htrace/Trace
at org.apache.hadoop.hdfs.DFSOutputStream.<init>(DFSOutputStream.java:1703)
at
org.apache.hadoop.hdfs.DFSOutputStream.newStreamForCreate(DFSOutputStream.java:1756)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1668)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1593)
at
org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:397)
at
org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:393)
at
org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at
org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:393)
at
org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:337)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:909)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:802)
at test.HDFSMain.main(HDFSMain.java:23)
Caused by: java.lang.ClassNotFoundException: org.htrace.Trace
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 12 more

I already have the htrace-core-3.1.0-incubating.jar in my external jars,
but it appears that isnt't looking for the apache one but a different
version.
I had included all the jars in the hadoop library folder but no success.
Thanks