twitter/scalding — pull request #726 by lewchuk-inkling (2013-12-18 22:43:02+00:00)
Title: Enable use of Cascading TemplateTaps in scalding.

This change adds a new TemplateSource that creates a TemplateTap. These are write only taps. Some minor restructuring to FileSource was required to permit reuse of the *Scheme traits with TemplateSource.