S3CrossRegionSyncClient with s3.amazonaws.com endpoint throws 400 for non-existent buckets and objects

[virajjasani]

Describe the bug

When we set endpoint as s3.amazonaws.com with cross-region access enabled, S3CrossRegionSyncClient is unable to throw 404 for non-existent buckets and objects. It rather returns 400.

e.g.

1. Non-existent object:

Caused by: software.amazon.awssdk.services.s3.model.S3Exception: null (Service: S3, Status Code: 400, Request ID: GNE62FJWMK16ZEW0, Extended Request ID: oJ7iYhAw3pLu7/Vi4JsALTOucFJQd+qpU0SiojAqaUkvoCCQNTgR3sW9EvIZYXqnWTPzrKtU50o=)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleErrorResponse(AwsXmlPredicatedResponseHandler.java:156)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleResponse(AwsXmlPredicatedResponseHandler.java:108)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:85)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:43)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler$Crc32ValidationResponseHandler.handle(AwsSyncClientHandler.java:93)
	at software.amazon.awssdk.core.internal.handler.BaseClientHandler.lambda$successTransformationResponseHandler$7(BaseClientHandler.java:279)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:38)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:72)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:78)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:40)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:55)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:39)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:81)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:56)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:80)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:60)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:32)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:37)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:26)
	at software.amazon.awssdk.core.internal.http.AmazonSyncHttpClient$RequestExecutionBuilderImpl.execute(AmazonSyncHttpClient.java:224)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.invoke(BaseSyncClientHandler.java:103)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.doExecute(BaseSyncClientHandler.java:173)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.lambda$execute$1(BaseSyncClientHandler.java:80)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.measureApiCallSuccess(BaseSyncClientHandler.java:182)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:74)
	at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:45)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:53)
	at software.amazon.awssdk.services.s3.DefaultS3Client.headObject(DefaultS3Client.java:6315)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.lambda$headObject$53(DelegatingS3Client.java:5053)
	at software.amazon.awssdk.services.s3.internal.crossregion.S3CrossRegionSyncClient.invokeOperation(S3CrossRegionSyncClient.java:73)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.headObject(DelegatingS3Client.java:5053)

2. Non-existent bucket:

Caused by: software.amazon.awssdk.services.s3.model.S3Exception: null (Service: S3, Status Code: 400, Request ID: 7WYJNQGS9H4BRAHY, Extended Request ID: oVHpyOEEIGxcC5zKrU5mEoP5po2/qlzXficqXthFEoFz5nAwTshhFKiH2+V3g9qGdaZ3C7PW6hY=)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleErrorResponse(AwsXmlPredicatedResponseHandler.java:156)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleResponse(AwsXmlPredicatedResponseHandler.java:108)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:85)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:43)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler$Crc32ValidationResponseHandler.handle(AwsSyncClientHandler.java:93)
	at software.amazon.awssdk.core.internal.handler.BaseClientHandler.lambda$successTransformationResponseHandler$7(BaseClientHandler.java:279)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:38)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:72)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:78)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:40)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:55)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:39)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:81)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:56)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:80)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:60)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:32)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:37)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:26)
	at software.amazon.awssdk.core.internal.http.AmazonSyncHttpClient$RequestExecutionBuilderImpl.execute(AmazonSyncHttpClient.java:224)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.invoke(BaseSyncClientHandler.java:103)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.doExecute(BaseSyncClientHandler.java:173)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.lambda$execute$1(BaseSyncClientHandler.java:80)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.measureApiCallSuccess(BaseSyncClientHandler.java:182)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:74)
	at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:45)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:53)
	at software.amazon.awssdk.services.s3.DefaultS3Client.headBucket(DefaultS3Client.java:6100)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.lambda$headBucket$52(DelegatingS3Client.java:4857)
	at software.amazon.awssdk.services.s3.internal.crossregion.S3CrossRegionSyncClient.invokeOperation(S3CrossRegionSyncClient.java:73)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.headBucket(DelegatingS3Client.java:4857)

Expected Behavior

1. Non-existent object:
   Exception of format:
   software.amazon.awssdk.services.s3.model.NoSuchKeyException: null (Service: S3, Status Code: 404, Request ID: N02Z0Y034BCY72W9, Extended Request ID: AoVnLQe5MjDd9IyDUWGPsRJo+AtrziK40ImJI/e2qYQT9fyeYG0bpxkNv8LR3NzcLtEhN0eM6u8=) (Service: S3, Status Code: 404, Request ID: N02Z0Y034BCY72W9)

2. Non-existent bucket:
   Exception of format:
   software.amazon.awssdk.services.s3.model.NoSuchBucketException: null (Service: S3, Status Code: 404, Request ID: BQ881CNTXACAJ5N3, Extended Request ID: MoSDCAY/R+O3eIzjMhkrqnObhs7EgJT+d7D48eG2MlnlT03G0WQmC4Je29KGjWjIYKOh8qujSCs=) (Service: S3, Status Code: 404, Request ID: BQ881CNTXACAJ5N3)

Current Behavior

1. Non-existent object:

Caused by: software.amazon.awssdk.services.s3.model.S3Exception: null (Service: S3, Status Code: 400, Request ID: GNE62FJWMK16ZEW0, Extended Request ID: oJ7iYhAw3pLu7/Vi4JsALTOucFJQd+qpU0SiojAqaUkvoCCQNTgR3sW9EvIZYXqnWTPzrKtU50o=)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleErrorResponse(AwsXmlPredicatedResponseHandler.java:156)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleResponse(AwsXmlPredicatedResponseHandler.java:108)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:85)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:43)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler$Crc32ValidationResponseHandler.handle(AwsSyncClientHandler.java:93)
	at software.amazon.awssdk.core.internal.handler.BaseClientHandler.lambda$successTransformationResponseHandler$7(BaseClientHandler.java:279)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:38)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:72)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:78)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:40)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:55)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:39)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:81)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:56)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:80)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:60)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:32)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:37)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:26)
	at software.amazon.awssdk.core.internal.http.AmazonSyncHttpClient$RequestExecutionBuilderImpl.execute(AmazonSyncHttpClient.java:224)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.invoke(BaseSyncClientHandler.java:103)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.doExecute(BaseSyncClientHandler.java:173)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.lambda$execute$1(BaseSyncClientHandler.java:80)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.measureApiCallSuccess(BaseSyncClientHandler.java:182)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:74)
	at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:45)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:53)
	at software.amazon.awssdk.services.s3.DefaultS3Client.headObject(DefaultS3Client.java:6315)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.lambda$headObject$53(DelegatingS3Client.java:5053)
	at software.amazon.awssdk.services.s3.internal.crossregion.S3CrossRegionSyncClient.invokeOperation(S3CrossRegionSyncClient.java:73)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.headObject(DelegatingS3Client.java:5053)

2. Non-existent bucket:

Caused by: software.amazon.awssdk.services.s3.model.S3Exception: null (Service: S3, Status Code: 400, Request ID: 7WYJNQGS9H4BRAHY, Extended Request ID: oVHpyOEEIGxcC5zKrU5mEoP5po2/qlzXficqXthFEoFz5nAwTshhFKiH2+V3g9qGdaZ3C7PW6hY=)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleErrorResponse(AwsXmlPredicatedResponseHandler.java:156)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handleResponse(AwsXmlPredicatedResponseHandler.java:108)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:85)
	at software.amazon.awssdk.protocols.xml.internal.unmarshall.AwsXmlPredicatedResponseHandler.handle(AwsXmlPredicatedResponseHandler.java:43)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler$Crc32ValidationResponseHandler.handle(AwsSyncClientHandler.java:93)
	at software.amazon.awssdk.core.internal.handler.BaseClientHandler.lambda$successTransformationResponseHandler$7(BaseClientHandler.java:279)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.HandleResponseStage.execute(HandleResponseStage.java:38)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:72)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:78)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:40)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:55)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:39)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:81)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:56)
	at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:36)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:80)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:60)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:42)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:50)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:32)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:37)
	at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:26)
	at software.amazon.awssdk.core.internal.http.AmazonSyncHttpClient$RequestExecutionBuilderImpl.execute(AmazonSyncHttpClient.java:224)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.invoke(BaseSyncClientHandler.java:103)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.doExecute(BaseSyncClientHandler.java:173)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.lambda$execute$1(BaseSyncClientHandler.java:80)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.measureApiCallSuccess(BaseSyncClientHandler.java:182)
	at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:74)
	at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:45)
	at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:53)
	at software.amazon.awssdk.services.s3.DefaultS3Client.headBucket(DefaultS3Client.java:6100)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.lambda$headBucket$52(DelegatingS3Client.java:4857)
	at software.amazon.awssdk.services.s3.internal.crossregion.S3CrossRegionSyncClient.invokeOperation(S3CrossRegionSyncClient.java:73)
	at software.amazon.awssdk.services.s3.DelegatingS3Client.headBucket(DelegatingS3Client.java:4857)

Reproduction Steps

Set endpoint: s3.amazonaws.com
Set region: us-east-2 (or us-east-1)
Enable cross region access: true

1. client#headObject call for non-existent object.
2. client#headBucket call for non-existent bucket.

Possible Solution

No response

Additional Information/Context

No response

AWS Java SDK version used

2.23.5

JDK version used

openjdk version "1.8.0_362"

Operating System and version

macOS, 14.2.1 (23C71)

[ahmarsuhail]

Just some additional context, we're facing an issue in Hadoop S3A where Spark will set the endpoint to s3.amazonaws.com if a user does not set endpoint or region, and so in this case we set the endpoint to s3.amazonaws.com, the region to US_EAST_2 and enable cross region access as we don't know the region of the bucket.

See https://issues.apache.org/jira/browse/HADOOP-19044 for more info.

[joviegas]

1. What is the requirement to set explicit "s3.amazonaws.com"? Why can't we use the default endpoint resolution by the client?
2. Status Code: 400 occurs when `"HTTP/1.1 400 Bad Request[\r][\n]" is response send by S3. For instance, "The authorization header is malformed; the region 'us-east-2' is wrong; expecting 'us-east-1' (Service: S3, Status Code: 400)." If your signing region and endpoint region are different, then you will encounter this issue. In this case, your signing region is 'us-east-2' since you created the client with this region, and the endpoint region is global. Thus, you get this error during authorization.
3. This behavior is not specific to CrossRegions clients; you will see this even in a normal client. Please confirm this and update the description of the issue to avoid confusions.
4. On a side note , Fix for issue #4720 , Cross Region enabled Clients created in US-EAST-1 will by internally disable global endpoint and do a regional endpoint call. #4849 will fix the issue when redirect was not happening when default region was us-east-1
5. 3. In summary , leave the Endpoint resolution to Client and let the client do the Endpoint setting based on different Endpoint rules internally. However , while using cross region feature if you somehow want to set the endpoint then make sure your signing region is same as Endpoint region. Example: if you want your Client region as "us-east-1" then your endpoint should have been "https://s3.us-east-1.amazonaws.com"

[virajjasani]

This behavior is not specific to CrossRegions clients; you will see this even in a normal client.

When cross region access is enabled,

1. If bucket and/or object exists on different region (e.g. us-west-2), using s3.amazonaws.com endpoint and us-east-2 region, results into successful headBucket and headObject calls.
2. If bucket and/or object does not exist on any region, using s3.amazonaws.com endpoint and us-east-2 region, results into above mentioned (in the description) 400 error rather than 404.

If cross region access is not enabled,

1. If bucket and/or object exists on different region (e.g. us-west-2), using s3.amazonaws.com endpoint and us-east-2 region, results into software.amazon.awssdk.services.s3.model.S3Exception: The authorization header is malformed; the region 'us-east-2' is wrong; expecting 'us-west-2' (Service: S3, Status Code: 400, Request ID: ${req_id}, Extended Request ID: ${extended_req_id})
2. If object does not exist on bucket from us-west-2, using s3.amazonaws.com endpoint and us-east-2 region, results into software.amazon.awssdk.services.s3.model.S3Exception: The authorization header is malformed; the region 'us-east-2' is wrong; expecting 'us-west-2' (Service: S3, Status Code: 400, Request ID: ${req_id}, Extended Request ID: ${extended_req_id})

In summary , leave the Endpoint resolution to Client and let the client do the Endpoint setting based on different Endpoint rules internally. However , while using cross region feature if you somehow want to set the endpoint then make sure your signing region is same as Endpoint region.

Sure, let me try out leaving endpoint resolution to client. Thanks @joviegas.

[debora-ito]

Are there any more questions regarding this issue?

[virajjasani]

For central endpoint, leaving endpoint resolution to the client seems to be working fine so far.