Update CHANGELOGs, clean up trace/span_processor

Author: scottgerring

opentelemetry-otlp/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## vNext
 
+- `OtlpHttpClient.shutdown` `TonicLogsClient.shutdown`, and `TonicTracesClient.shutdown` now explicitly return a result. The
+    semantics of the method have not changed, but you will have a new lint encouraging you to consume these results.
+
 ## 0.27.0
 
 Released 2024-Nov-11

opentelemetry-sdk/CHANGELOG.md

@@ -9,6 +9,8 @@
     transparent change.
     [#2338](https://github.com/open-telemetry/opentelemetry-rust/pull/2338)
   - `ResourceDetector.detect()` no longer supports timeout option.
+  - The trait functions `LogExporter.shutdown` and `TraceExporter.shutdown` now explicitly return a result. The
+    semantics of the method have not changed, but you will have a new lint encouraging you to consume these results.
 
 ## 0.27.1
 

opentelemetry-sdk/src/trace/span_processor.rs

@@ -149,14 +149,7 @@ impl SpanProcessor for SimpleSpanProcessor {
     }
 
     fn shutdown(&self) -> TraceResult<()> {
-        if let Ok(mut exporter) = self.exporter.lock() {
-            exporter.shutdown()?;
-            Ok(())
-        } else {
-            Err(TraceError::Other(
-                "SimpleSpanProcessor mutex poison at shutdown".into(),
-            ))
-        }
+        self.exporter.lock()?.shutdown()
     }
 
     fn set_resource(&mut self, resource: &Resource) {

opentelemetry-stdout/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## vNext
 
+- `LogExporter.shutdown` and `SpanExporter.shutdown`  now explicitly return a result. The
+    semantics of the method have not changed, but you will have a new lint encouraging you to consume these results.
+
+
 ## 0.27.0
 
 Released 2024-Nov-11