Address review comments

benchmark/benchmark.go

@@ -173,6 +173,10 @@ func DoStreamingRoundTrip(stream testpb.BenchmarkService_StreamingCallClient, re
 		return grpc.Errorf(grpc.Code(err), "StreamingCall(_).Send: %v", grpc.ErrorDesc(err))
 	}
 	if _, err := stream.Recv(); err != nil {
+		// EOF should be a valid error here.
+		if err == io.EOF {
+			return nil
+		}
 		return grpc.Errorf(grpc.Code(err), "StreamingCall(_).Recv: %v", grpc.ErrorDesc(err))
 	}
 	return nil

benchmark/grpc_testing/control.proto

@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without

benchmark/grpc_testing/messages.proto

@@ -1,5 +1,4 @@
-
-// Copyright 2015-2016, Google Inc.
+// Copyright 2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without

benchmark/grpc_testing/payloads.proto

@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without

benchmark/grpc_testing/services.proto

@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without

benchmark/grpc_testing/stats.proto

@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without

benchmark/stats/histogram.go

@@ -145,6 +145,7 @@ func NewHistogram(opts HistogramOptions) *Histogram {
 	return &h
 }
 
+// Clear resets all the content of histogram.
 func (h *Histogram) Clear() {
 	h.count = newCounter()
 	h.sum = newCounter()