dimalabs/ozone — pull request #97 by fhueske (2013-09-13 18:55:26+00:00)
Title: Fixed bug. stub.open() was not called for COMBININGSORT local strategy.

open() method is not called on ReduceStub object which is used for COMBINGSORT strategy.
Hence, stub might not get correctly initialized.
Also made an exception message more meaningful by adding the name of the stub class that fails.