“9bdee4372e2b5bc61753963bb8492b7817a5dc4d”上不存在“...paddle/fluid/tests/unittests/test_random_routing_op.py”
* Refine beam_search_op to output an extra parent_idx tensor. test=develop * Fix the unittest test_beam_search_op. test=develop * Fix the merging mistake. test=develop