AutoConfiguredOpenTelemetrySdkBuilder does not set GlobalOpenTelemetry by default

sdk-extensions/autoconfigure/src/main/java/io/opentelemetry/sdk/autoconfigure/AutoConfiguredOpenTelemetrySdk.java

@@ -28,7 +28,7 @@ public abstract class AutoConfiguredOpenTelemetrySdk {
    * <p>This will automatically set the resulting SDK as the {@link GlobalOpenTelemetry} instance.
    */
   public static AutoConfiguredOpenTelemetrySdk initialize() {
-    return builder().build();
+    return builder().setResultAsGlobal().build();
   }
 
   /**

sdk-extensions/autoconfigure/src/main/java/io/opentelemetry/sdk/autoconfigure/AutoConfiguredOpenTelemetrySdkBuilder.java

@@ -89,7 +89,7 @@ public final class AutoConfiguredOpenTelemetrySdkBuilder implements AutoConfigur
 
   private boolean registerShutdownHook = true;
 
-  private boolean setResultAsGlobal = true;
+  private boolean setResultAsGlobal = false;
 
   private boolean customized;
 
@@ -297,9 +297,11 @@ public AutoConfiguredOpenTelemetrySdkBuilder disableShutdownHook() {
   /**
    * Sets whether the configured {@link OpenTelemetrySdk} should be set as the application's
    * {@linkplain io.opentelemetry.api.GlobalOpenTelemetry global} instance.
+   *
+   * <p>By default, {@link GlobalOpenTelemetry} is not set.
    */
-  public AutoConfiguredOpenTelemetrySdkBuilder setResultAsGlobal(boolean setResultAsGlobal) {
-    this.setResultAsGlobal = setResultAsGlobal;
+  public AutoConfiguredOpenTelemetrySdkBuilder setResultAsGlobal() {
+    this.setResultAsGlobal = true;
     return this;
   }
 

sdk-extensions/autoconfigure/src/test/java/io/opentelemetry/sdk/autoconfigure/AutoConfiguredOpenTelemetrySdkTest.java

@@ -147,7 +147,6 @@ void resetGlobal() {
     GlobalEventEmitterProvider.resetForTest();
     builder =
         AutoConfiguredOpenTelemetrySdk.builder()
-            .setResultAsGlobal(false)
             .addPropertiesSupplier(disableExportPropertySupplier());
   }
 
@@ -355,15 +354,15 @@ void builder_addLoggerProviderCustomizer() {
   void builder_setResultAsGlobalFalse() {
     GlobalOpenTelemetry.set(OpenTelemetry.noop());
 
-    OpenTelemetrySdk openTelemetry = builder.setResultAsGlobal(false).build().getOpenTelemetrySdk();
+    OpenTelemetrySdk openTelemetry = builder.build().getOpenTelemetrySdk();
 
     assertThat(GlobalOpenTelemetry.get()).extracting("delegate").isNotSameAs(openTelemetry);
     assertThat(GlobalEventEmitterProvider.get()).isNotSameAs(openTelemetry.getSdkLoggerProvider());
   }
 
   @Test
   void builder_setResultAsGlobalTrue() {
-    OpenTelemetrySdk openTelemetry = builder.setResultAsGlobal(true).build().getOpenTelemetrySdk();
+    OpenTelemetrySdk openTelemetry = builder.setResultAsGlobal().build().getOpenTelemetrySdk();
 
     assertThat(GlobalOpenTelemetry.get()).extracting("delegate").isSameAs(openTelemetry);
     assertThat(GlobalEventEmitterProvider.get())
@@ -378,7 +377,7 @@ void builder_registersShutdownHook() {
     Thread thread = new Thread();
     doReturn(thread).when(builder).shutdownHook(any());
 
-    OpenTelemetrySdk sdk = builder.setResultAsGlobal(false).build().getOpenTelemetrySdk();
+    OpenTelemetrySdk sdk = builder.build().getOpenTelemetrySdk();
 
     verify(builder, times(1)).shutdownHook(sdk);
     assertThat(Runtime.getRuntime().removeShutdownHook(thread)).isTrue();
@@ -443,8 +442,7 @@ void tracerProviderCustomizer() {
                 (resource, config) -> resource.merge(Resource.builder().put("cow", "moo").build()))
             .addPropertiesSupplier(() -> singletonMap("otel.metrics.exporter", "none"))
             .addPropertiesSupplier(() -> singletonMap("otel.traces.exporter", "none"))
-            .addPropertiesSupplier(() -> singletonMap("otel.logs.exporter", "none"))
-            .setResultAsGlobal(false);
+            .addPropertiesSupplier(() -> singletonMap("otel.logs.exporter", "none"));
 
     AutoConfiguredOpenTelemetrySdk autoConfigured = autoConfiguration.build();
     assertThat(autoConfigured.getResource().getAttribute(stringKey("cow"))).isEqualTo("moo");
@@ -515,7 +513,6 @@ void configurationError_ClosesResources() {
                     .addPropertiesSupplier(() -> singletonMap("otel.traces.exporter", "none"))
                     .addPropertiesSupplier(() -> singletonMap("otel.logs.exporter", "none"))
                     .addPropertiesSupplier(() -> singletonMap("otel.propagators", "foo"))
-                    .setResultAsGlobal(false)
                     .build())
         .isInstanceOf(ConfigurationException.class)
         .hasMessageContaining("Unrecognized value for otel.propagators");

sdk-extensions/autoconfigure/src/testAutoConfigureOrder/java/io/opentelemetry/sdk/autoconfigure/OrderedSpiTest.java

@@ -15,11 +15,7 @@ class OrderedSpiTest {
 
   @Test
   void shouldLoadSpiImplementationsInOrder() {
-    AutoConfiguredOpenTelemetrySdk sdk =
-        AutoConfiguredOpenTelemetrySdk.builder()
-            .setResultAsGlobal(false)
-            .disableShutdownHook()
-            .build();
+    AutoConfiguredOpenTelemetrySdk sdk = AutoConfiguredOpenTelemetrySdk.builder().build();
 
     assertThat(sdk.getResource().getAttributes().asMap())
         .contains(

sdk-extensions/autoconfigure/src/testConditionalResourceProvider/java/io/opentelemetry/sdk/autoconfigure/ConditionalResourceProviderTest.java

@@ -16,8 +16,7 @@ class ConditionalResourceProviderTest {
 
   @Test
   void shouldConditionallyProvideResourceAttributes_skipBasedOnPreviousResource() {
-    AutoConfiguredOpenTelemetrySdk sdk =
-        AutoConfiguredOpenTelemetrySdk.builder().setResultAsGlobal(false).build();
+    AutoConfiguredOpenTelemetrySdk sdk = AutoConfiguredOpenTelemetrySdk.builder().build();
 
     assertThat(sdk.getResource().getAttributes().asMap())
         .contains(entry(ResourceAttributes.SERVICE_NAME, "test-service"));
@@ -27,7 +26,6 @@ void shouldConditionallyProvideResourceAttributes_skipBasedOnPreviousResource()
   void shouldConditionallyProvideResourceAttributes_skipBasedOnConfig() {
     AutoConfiguredOpenTelemetrySdk sdk =
         AutoConfiguredOpenTelemetrySdk.builder()
-            .setResultAsGlobal(false)
             .addPropertiesSupplier(() -> singletonMap("skip-first-resource-provider", "true"))
             .build();
 

sdk-extensions/autoconfigure/src/testFullConfig/java/io/opentelemetry/sdk/autoconfigure/AutoConfiguredOpenTelemetrySdkTest.java

@@ -44,10 +44,7 @@ void initializeAndGet() {
   @Test
   void initializeAndGet_noGlobal() {
     try (OpenTelemetrySdk sdk =
-        AutoConfiguredOpenTelemetrySdk.builder()
-            .setResultAsGlobal(false)
-            .build()
-            .getOpenTelemetrySdk()) {
+        AutoConfiguredOpenTelemetrySdk.builder().build().getOpenTelemetrySdk()) {
       assertThat(GlobalOpenTelemetry.get()).isNotSameAs(sdk);
     }
   }

sdk-extensions/autoconfigure/src/testFullConfig/java/io/opentelemetry/sdk/autoconfigure/MetricExporterConfigurationTest.java

@@ -72,7 +72,6 @@ void autoConfiguredOpenTelemetrySdk_PrometheusOnClasspath() {
 
     try (OpenTelemetrySdk sdk =
         AutoConfiguredOpenTelemetrySdk.builder()
-            .setResultAsGlobal(false)
             .setConfig(DefaultConfigProperties.createForTest(config))
             .build()
             .getOpenTelemetrySdk()) {

sdk-extensions/incubator/src/test/java/io/opentelemetry/sdk/extension/incubator/metric/viewconfig/ViewConfigCustomizerTest.java

@@ -28,7 +28,6 @@ class ViewConfigCustomizerTest {
   void customizeMeterProvider_Spi() {
     InMemoryMetricReader reader = InMemoryMetricReader.create();
     AutoConfiguredOpenTelemetrySdk.builder()
-        .setResultAsGlobal(false)
         .addPropertiesSupplier(
             () ->
                 ImmutableMap.of(