Thanks Andrew for catching and fixing this!
Some small comments:
- Let's add a input nullity check in toHdfsFileStatusArray
- Maybe change assert array != null; to Precondition checks to be more consistent?
- In the doc, the Iteratively_list_a_Directory link didn't work on my local. Iteratively_List_a_Directory worked.
Test failures look unrelated. +1 after the above are addressed.