spotify/luigi — pull request #410 by jimjh (2014-08-27 21:24:42+00:00)
Title: fix recursive delete to use correct cmd

We are pretty sure that `-rmr` is the correct command.

See http://hadoop.apache.org/docs/r1.0.4/file_system_shell.html#rmr

Tested on hadoop 1.0.3 on EMR.