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MapReduce, mail # dev - ClassNotFoundException: org.apache.commons.io.FileUtils

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ClassNotFoundException: org.apache.commons.io.FileUtils
Ted Yu 2012-05-18, 03:01
HBase 0.92 upgraded hadoop to 1.0.3 today.
We started seeing some test failures which we didn't see before. e.g.:
Here is the interesting part:

Caused by: java.lang.ClassNotFoundException: org.apache.commons.io.FileUtils
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)
... 15 more

In hadoop 1.0, I see:

HBase doesn't specify commons-io version.

When I run the same test on MacBook, I don't see the test fail.

commons-io in local mvn repo is 1.3.2

If someone can give me hint on why the unit test failed, that would be