Funny, I was just trying to add something to the wiki addressing this.
These instructions are for 2.2, but I imagine that 2.0.5 is probably very
similar.
If the formatting doesn't come through for whatever reason, I posted the
same thing here:
http://answers.splunk.com/answers/118174/hunk-
If you use tarballs, you will need to build native libraries for your
OS. Follow instructions for native libraries under src/BUILDING.txt of
a source tarball.
Alternatively, pick up Apache Hadoop packages from Apache Bigtop for
2.0.5-alpha and they'll come with pre-built, proper native libraries.