address comments

Author: wangzlei

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/aws_batch_unsampled_span_processor.py

@@ -18,7 +18,7 @@ class BatchUnsampledSpanProcessor(BaseBatchSpanProcessor):
     # pylint: disable=no-self-use
     def on_start(self, span: Span, parent_context: Optional[Context] = None) -> None:
         if not span.context.trace_flags.sampled:
-            span.set_attribute(AWS_TRACE_FLAG_UNSAMPLED, "True")
+            span.set_attribute(AWS_TRACE_FLAG_UNSAMPLED, True)
 
     def on_end(self, span: ReadableSpan) -> None:
         if span.context.trace_flags.sampled:

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/aws_opentelemetry_configurator.py

@@ -155,7 +155,6 @@ def _init_tracing(
         span_exporter = _customize_exporter(span_exporter, resource)
         trace_provider.add_span_processor(BatchSpanProcessor(span_exporter))
 
-    _export_unsampled_span_for_lambda(trace_provider, resource)
     _customize_span_processors(trace_provider, resource)
 
     set_tracer_provider(trace_provider)
@@ -276,6 +275,8 @@ def _customize_span_processors(provider: TracerProvider, resource: Resource) ->
     if not _is_application_signals_enabled():
         return
 
+    _export_unsampled_span_for_lambda(provider, resource)
+
     # Construct and set local and remote attributes span processor
     provider.add_span_processor(AttributePropagatingSpanProcessorBuilder().build())