Changed get_tracer of invalid values to return empty string

Author: eddyleelin

Diff for: opentelemetry-sdk/src/opentelemetry/sdk/trace/__init__.py

@@ -997,7 +997,7 @@ def get_tracer(
         instrumenting_library_version: str = "",
     ) -> "trace_api.Tracer":
         if not instrumenting_module_name:  # Reject empty strings too.
-            instrumenting_module_name = "ERROR:MISSING MODULE NAME"
+            instrumenting_module_name = ""
             logger.error("get_tracer called with missing module name.")
         return Tracer(
             self.sampler,

Diff for: opentelemetry-sdk/tests/trace/test_trace.py

@@ -260,15 +260,22 @@ def test_invalid_instrumentation_info(self):
         self.assertEqual(
             tracer1.instrumentation_info, tracer2.instrumentation_info
         )
+
         self.assertIsInstance(
             tracer1.instrumentation_info, InstrumentationInfo
         )
         span1 = tracer1.start_span("foo")
         self.assertTrue(span1.is_recording())
         self.assertEqual(tracer1.instrumentation_info.version, "")
-        self.assertEqual(
-            tracer1.instrumentation_info.name, "ERROR:MISSING MODULE NAME"
+        self.assertEqual(tracer1.instrumentation_info.name, "")
+
+        self.assertIsInstance(
+            tracer2.instrumentation_info, InstrumentationInfo
         )
+        span2 = tracer2.start_span("bar")
+        self.assertTrue(span2.is_recording())
+        self.assertEqual(tracer2.instrumentation_info.version, "")
+        self.assertEqual(tracer2.instrumentation_info.name, "")
 
     def test_span_processor_for_source(self):
         tracer_provider = trace.TracerProvider()