HADOOP-19037. AWS SDK v2: ITestS3AConfiguration failing with region problems (#6486)

Stop test STS client relying on SDK region resolution

Contributed by Shintaro Onuma <[email protected]>

Author: shintaroonuma

hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AConfiguration.java

@@ -92,6 +92,10 @@ public class ITestS3AConfiguration extends AbstractHadoopTestBase {
   private static final String AP_ILLEGAL_ACCESS =
       "ARN of type accesspoint cannot be passed as a bucket";
 
+  private static final String US_EAST_1 = "us-east-1";
+
+  private static final String STS_ENDPOINT = "sts.us-east-1.amazonaws.com";
+
   private Configuration conf;
   private S3AFileSystem fs;
 
@@ -625,8 +629,9 @@ public void testS3SpecificSignerOverride() throws Exception {
 
     final String bucket = fs.getBucket();
     StsClient stsClient =
-        STSClientFactory.builder(config, bucket, new AnonymousAWSCredentialsProvider(), "",
-            "").build();
+        STSClientFactory.builder(config, bucket, new AnonymousAWSCredentialsProvider(),
+                STS_ENDPOINT, US_EAST_1).build();
+
 
     intercept(StsException.class, "", () ->
         stsClient.getSessionToken());