mathcamp/pypicloud — pull request #27 by raizyr (2014-06-09 17:44:27+00:00)
Title: Rollback any pending transactions prior to reloading schema

Issue https://github.com/mathcamp/pypicloud/issues/26 appears to be related to aggressive locking that is not present in sqlite. Issuing a session.rollback() prior to reloading schema seems to fix the hanging.