add note about default protocol of spring boot starter (#4258)

open-telemetry · Apr 15, 2024 · b9b918c · b9b918c
1 parent c83c483
commit b9b918c
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 2 deletions.
diff --git a/content/en/docs/languages/java/automatic/configuration.md b/content/en/docs/languages/java/automatic/configuration.md
@@ -30,6 +30,14 @@ specific portions of the SDK & agent:
 - [Span limits](https://github.com/open-telemetry/opentelemetry-java/tree/main/sdk-extensions/autoconfigure/README.md#span-limits)
 - [Using SPI to further configure the SDK](https://github.com/open-telemetry/opentelemetry-java/tree/main/sdk-extensions/autoconfigure/README.md#customizing-the-opentelemetry-sdk)
 
+{{% alert title="Important" color="warning" %}}
+
+Unlike the SDK autoconfiguration, versions 2.0+ of the Java agent and
+OpenTelemetry Spring Boot starter use `http/protobuf` as the default protocol,
+not `grpc`.
+
+{{% /alert %}}
+
 ### Enable Resource Providers that are disabled by default
 
 In addition to the resource configuration from the SDK autoconfiguration, you

diff --git a/content/en/docs/languages/java/automatic/spring-boot.md b/content/en/docs/languages/java/automatic/spring-boot.md
@@ -165,8 +165,10 @@ IDE.
 
 The OpenTelemetry Starter supports all the
 [SDK Autoconfiguration](/docs/languages/java/automatic/configuration/#sdk-autoconfiguration)
-(since 2.2.0). You can set properties in the `application.properties` or the
-`application.yaml` file, or use environment variables.
+(since 2.2.0).
+
+You can update the configuration with properties in the `application.properties`
+or the `application.yaml` file, or with environment variables.
 
 `application.properties` example: