mukund-thakur commented on code in PR #6865:
URL: https://github.com/apache/hadoop/pull/6865#discussion_r1637115037


##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/sdk/TestAWSV2SDK.java:
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@@ -0,0 +1,93 @@
+/*
+ * 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.sdk;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+import org.junit.Test;
+import org.apache.hadoop.test.AbstractHadoopTestBase;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests to verify AWS SDK based issues like duplicated shaded classes and 
others
+ */
+public class TestAWSV2SDK extends AbstractHadoopTestBase {
+
+  private static final Logger LOG = 
LoggerFactory.getLogger(TestAWSV2SDK.class.getName());
+
+  @Test
+  public void testShadedClasses() throws IOException {
+    String allClassPath = System.getProperty("java.class.path");
+    LOG.debug("Current classpath:{}", allClassPath);
+    String[] classPaths = allClassPath.split(File.pathSeparator);
+    String v2ClassPath = null;
+    for (String classPath : classPaths) {
+      //Checking for only version 2.x sdk here
+      if (classPath.contains("awssdk/bundle/2")) {
+        v2ClassPath = classPath;
+        break;
+      }
+    }
+    assertThat(v2ClassPath)

Review Comment:
   maybe log the class path for manual debugging later if this fails. 



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