Yelp/mrjob — pull request #952 by benjolitz (2014-11-13 22:36:54+00:00)
Title: Update function for get_bucket mock, set validate=True if boto.Version >= '2.25.0'

Should answer issue #865.

Versions of boto prior to 2.25.0 do an expensive enumeration to see if a
bucket exists. Instead of stripping out validation completely, disable
it only on older versions.