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The following commit(s) were added to refs/heads/master by this push:
     new e4db8a6c7f2 HDDS-15345. Make GetBucketLocation return NotImplemented 
Response (#10332)
e4db8a6c7f2 is described below

commit e4db8a6c7f210fd8853aac38ba9f3ddf2453a214
Author: fmorg-git <[email protected]>
AuthorDate: Sun May 24 22:26:10 2026 -0700

    HDDS-15345. Make GetBucketLocation return NotImplemented Response (#10332)
---
 hadoop-hdds/docs/content/interface/S3.md           |  1 -
 .../org/apache/hadoop/ozone/audit/S3GAction.java   |  1 +
 .../hadoop/ozone/s3/endpoint/BucketEndpoint.java   |  1 +
 .../s3/endpoint/BucketGetLocationHandler.java      | 47 +++++++++++++++++++
 .../org/apache/hadoop/ozone/s3/util/S3Consts.java  |  2 +
 .../ozone/s3/endpoint/TestBucketGetLocation.java   | 52 ++++++++++++++++++++++
 6 files changed, 103 insertions(+), 1 deletion(-)

diff --git a/hadoop-hdds/docs/content/interface/S3.md 
b/hadoop-hdds/docs/content/interface/S3.md
index 1edc89f809d..b43abb13db5 100644
--- a/hadoop-hdds/docs/content/interface/S3.md
+++ b/hadoop-hdds/docs/content/interface/S3.md
@@ -68,7 +68,6 @@ The Ozone S3 Gateway implements a substantial subset of the 
Amazon S3 REST API.
 | ✅ 
[CreateBucket](https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateBucket.html)
           | Creates a new bucket. | **Non-compliant behavior:** The default 
bucket ACL may include extra group permissions instead of being strictly 
private. Bucket names must adhere to S3 naming conventions. |
 | ✅ 
[HeadBucket](https://docs.aws.amazon.com/AmazonS3/latest/API/API_HeadBucket.html)
               | Checks for the existence of a bucket. | Returns a 200 status 
if the bucket exists. |
 | ✅ 
[DeleteBucket](https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteBucket.html)
           | Deletes a bucket. | Bucket must be empty before deletion. |
-| ✅ 
[GetBucketLocation](https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetBucketLocation.html)
 | Retrieves the location (region) of a bucket. | Typically returns a default 
region (e.g., `us-east-1`), which may differ from AWS if region-specific 
responses are expected. |
 
 ### Object Operations
 
diff --git 
a/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/audit/S3GAction.java
 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/audit/S3GAction.java
index 6c295b7aafc..2561faa3226 100644
--- 
a/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/audit/S3GAction.java
+++ 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/audit/S3GAction.java
@@ -31,6 +31,7 @@ public enum S3GAction implements AuditAction {
   PUT_ACL,
   LIST_MULTIPART_UPLOAD,
   MULTI_DELETE,
+  GET_BUCKET_LOCATION,
 
   //RootEndpoint
   LIST_S3_BUCKETS,
diff --git 
a/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/BucketEndpoint.java
 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/BucketEndpoint.java
index 83965732db2..9301c235f40 100644
--- 
a/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/BucketEndpoint.java
+++ 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/BucketEndpoint.java
@@ -415,6 +415,7 @@ protected void init() {
 
     // initialize handlers
     BucketOperationHandler chain = BucketOperationHandlerChain.newBuilder(this)
+        .add(new BucketGetLocationHandler())
         .add(new BucketAclHandler())
         .add(new ListMultipartUploadsHandler())
         .add(new BucketCrudHandler())
diff --git 
a/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/BucketGetLocationHandler.java
 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/BucketGetLocationHandler.java
new file mode 100644
index 00000000000..b01daf14e85
--- /dev/null
+++ 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/BucketGetLocationHandler.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.ozone.s3.endpoint;
+
+import static 
org.apache.hadoop.ozone.s3.exception.S3ErrorTable.NOT_IMPLEMENTED;
+import static org.apache.hadoop.ozone.s3.exception.S3ErrorTable.newError;
+
+import java.io.IOException;
+import javax.ws.rs.core.Response;
+import org.apache.hadoop.ozone.audit.S3GAction;
+import org.apache.hadoop.ozone.s3.exception.OS3Exception;
+import org.apache.hadoop.ozone.s3.util.S3Consts.QueryParams;
+
+/**
+ * Handles GET bucket {@code ?location} ({@code GetBucketLocation}).
+ * <p>
+ * This operation is not implemented; previously the request incorrectly fell
+ * through to list-objects and returned a {@code ListBucketResult} body.
+ */
+class BucketGetLocationHandler extends BucketOperationHandler {
+
+  @Override
+  Response handleGetRequest(S3RequestContext context, String bucketName)
+      throws IOException, OS3Exception {
+    if (queryParams().get(QueryParams.LOCATION) == null) {
+      return null;
+    }
+
+    context.setAction(S3GAction.GET_BUCKET_LOCATION);
+    throw newError(NOT_IMPLEMENTED, "GetBucketLocation");
+  }
+}
diff --git 
a/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/util/S3Consts.java
 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/util/S3Consts.java
index 76addc4b9e3..157324d4a24 100644
--- 
a/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/util/S3Consts.java
+++ 
b/hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/util/S3Consts.java
@@ -130,6 +130,8 @@ public static final class QueryParams {
     public static final String DELIMITER = "delimiter";
     public static final String ENCODING_TYPE = "encoding-type";
     public static final String KEY_MARKER = "key-marker";
+    // GetBucketLocation is not implemented
+    public static final String LOCATION = "location";
     public static final String MARKER = "marker";
     public static final String MAX_KEYS = "max-keys";
     public static final String MAX_PARTS = "max-parts";
diff --git 
a/hadoop-ozone/s3gateway/src/test/java/org/apache/hadoop/ozone/s3/endpoint/TestBucketGetLocation.java
 
b/hadoop-ozone/s3gateway/src/test/java/org/apache/hadoop/ozone/s3/endpoint/TestBucketGetLocation.java
new file mode 100644
index 00000000000..f51ad3f54dd
--- /dev/null
+++ 
b/hadoop-ozone/s3gateway/src/test/java/org/apache/hadoop/ozone/s3/endpoint/TestBucketGetLocation.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.ozone.s3.endpoint;
+
+import static 
org.apache.hadoop.ozone.s3.endpoint.EndpointTestUtils.assertErrorResponse;
+
+import java.io.IOException;
+import org.apache.hadoop.ozone.client.OzoneClient;
+import org.apache.hadoop.ozone.client.OzoneClientStub;
+import org.apache.hadoop.ozone.s3.exception.S3ErrorTable;
+import org.apache.hadoop.ozone.s3.util.S3Consts.QueryParams;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+/** Tests for {@code GET /{bucket}?location} ({@code GetBucketLocation}). */
+public class TestBucketGetLocation {
+
+  private static final String BUCKET_NAME = "my bucket";
+  private BucketEndpoint bucketEndpoint;
+
+  @BeforeEach
+  public void setup() throws IOException {
+    final OzoneClient clientStub = new OzoneClientStub();
+    clientStub.getObjectStore().createS3Bucket(BUCKET_NAME);
+
+    bucketEndpoint = EndpointBuilder.newBucketEndpointBuilder()
+        .setClient(clientStub)
+        .build();
+  }
+
+  @Test
+  public void getBucketLocationIsNotImplemented() {
+    bucketEndpoint.queryParamsForTest().set(QueryParams.LOCATION, "");
+
+    assertErrorResponse(S3ErrorTable.NOT_IMPLEMENTED, () -> 
bucketEndpoint.get(BUCKET_NAME));
+  }
+}


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