Yelp/mrjob — pull request #487 by irskep (2012-06-21 01:16:02+00:00)
Title: Fix HADOOP_HOME regression

Fixes #482.

I wrote some bad code last August that assumed $HADOOP_HOME would be set. I wasn't aware of the `hadoop_home` option at the time.

Test coverage in mrjob.hadoop is suboptimal to say the least.