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https://issues.apache.org/jira/browse/HADOOP-19941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18107333#comment-18107333
]
ASF GitHub Bot commented on HADOOP-19941:
-----------------------------------------
anmolanmol1234 commented on code in PR #8611:
URL: https://github.com/apache/hadoop/pull/8611#discussion_r3842847844
##########
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/contract/TestResponseParserFactory.java:
##########
@@ -0,0 +1,121 @@
+/**
+ * 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.fs.azurebfs.contract;
+
+import java.util.function.Supplier;
+
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
+import org.junit.jupiter.api.Test;
+
+import org.apache.hadoop.fs.azurebfs.contracts.services.ArrowListBlobParser;
+import org.apache.hadoop.fs.azurebfs.contracts.services.ListBlobResponseParser;
+import org.apache.hadoop.fs.azurebfs.contracts.services.ResponseParserFactory;
+import
org.apache.hadoop.fs.azurebfs.contracts.services.XmlListBlobResponseParser;
+
+import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.APPLICATION_APACHE_ARROW_STREAM;
+import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.APPLICATION_XML;
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Unit tests for {@link ResponseParserFactory} parser selection based on the
+ * response Content-Type.
+ */
+public class TestResponseParserFactory {
Review Comment:
No case for a case-insensitive Arrow type carrying parameters
("Application/VND.Apache.Arrow.Stream; charset=UTF-8"). The lowercase and the
parameter paths are tested separately but never together, which is the
combination a real service response is most likely to be.
> ABFS: Support Photon (Apache Arrow) based ListBlobs on Blob endpoint with XML
> fallback
> --------------------------------------------------------------------------------------
>
> Key: HADOOP-19941
> URL: https://issues.apache.org/jira/browse/HADOOP-19941
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs/azure
> Reporter: Manish Bhatt
> Assignee: Manish Bhatt
> Priority: Major
> Labels: pull-request-available
>
> Add config-gated support (fs.azure.photon.enabled, default off) for consuming
> ListBlobs responses in the Apache Arrow (Photon) format on the ABFS Blob
> endpoint. When enabled, ABFS advertises Arrow via an Accept header; the
> response Content-Type selects an Arrow or the existing XML parser, both
> producing identical FileStatus results, so downstream behaviour is unchanged.
> Includes automatic, transparent fallback to XML, full parsing parity
> (metadata, directory markers, implicit directories, copy properties, native
> timestamp/length vectors), interrupt-safe Arrow parsing, and Photon telemetry
> (request, response, fallback, parse-failure counts and listing latency). No
> public API changes. Covered by unit and integration tests.
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