Yelp/mrjob — pull request #461 by irskep (2012-05-21 16:38:35+00:00)
Title: Counter fetching no longer aborts inappropriately

Consider a persistent job flow that is still running. SSH is not available or logs are not where mrjob expects them to be. You try `fetch_logs --counters` or mrjob tries to look for counters.

Before: counter fetching aborts before attempting.

After: counter fetching proceeds, but prints a helpful message if nothing is found.

Also includes some small cleanup.

This branch fixes #451.