I replied this earlier. Quoted:

"
1) Is there any way to have the unit test for this on by default? What's required to set it up? This is a pretty major piece of functionality and it would be good to test it by default.

It requires to run Tachyon locally to set it up.

I totally agree to test it by default. Tachyon has a local cluster mode for testing. But it is in the test jar, which will be release from Tachyon 0.5.0. The current unit test has been tested locally. How about let's modify this to use TachyonLocalClusterMode after from 0.5.0 release?

"