Merge pull request BVLC#2612 from ih4cku/master

register a dummy reducer to prevent mincepie runtime error

Author: shelhamer

tools/extra/resize_and_crop_images.py

@@ -101,7 +101,7 @@ def map(self, key, value):
         yield value, FLAGS.output_folder
 
 mapreducer.REGISTER_DEFAULT_MAPPER(ResizeCropImagesMapper)
-
+mapreducer.REGISTER_DEFAULT_REDUCER(mapreducer.NoPassReducer)
 mapreducer.REGISTER_DEFAULT_READER(mapreducer.FileReader)
 mapreducer.REGISTER_DEFAULT_WRITER(mapreducer.FileWriter)