stratosphere/stratosphere — pull request #809 by fhueske (2014-05-14 16:09:20+00:00)
Title: Fix for branching merging logic in BulkIterationPlanNode

Fixes a NPE in the BulkIterationPlanNode that occurs when a the output of the bulk iteration is used as a broadcast set with the (branched) input of the bulk iteration.
See the added test case which reproduced the bug.