[GitHub] [hadoop] steveloughran commented on a change in pull request #533: HADOOP-14630 Contract Tests to verify create, mkdirs and rename under a file is forbidden

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steveloughran commented on a change in pull request #533: HADOOP-14630  Contract Tests to verify create, mkdirs and rename under a file is forbidden
URL: https://github.com/apache/hadoop/pull/533#discussion_r389723098
 
 

 ##########
 File path: hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/contract/AbstractContractCreateTest.java
 ##########
 @@ -332,4 +323,117 @@ public void testCreateMakesParentDirs() throws Throwable {
     assertTrue("Grandparent directory does not appear to be a directory",
         fs.getFileStatus(grandparent).isDirectory());
   }
+
+  @Test
+  public void testCreateFileUnderFile() throws Throwable {
+    describe("Verify that it is forbidden to create file/file");
+    if (isSupported(CREATE_FILE_UNDER_FILE_ALLOWED)) {
+      // object store or some file systems: downgrade to a skip so that the
+      // failure is visible in test results
+      skip("This filesystem supports creating files under files");
+    }
+    Path grandparent = methodPath();
+    Path parent = new Path(grandparent, "parent");
+    expectCreateUnderFileFails(
+        "creating a file under a file",
+        grandparent,
+        parent);
+  }
+
+  @Test
+  public void testCreateUnderFileSubdir() throws Throwable {
+    describe("Verify that it is forbidden to create file/dir/file");
+    if (isSupported(CREATE_FILE_UNDER_FILE_ALLOWED)) {
+      // object store or some file systems: downgrade to a skip so that the
+      // failure is visible in test results
+      skip("This filesystem supports creating files under files");
+    }
+    Path grandparent = methodPath();
+    Path parent = new Path(grandparent, "parent");
+    Path child = new Path(parent, "child");
+    expectCreateUnderFileFails(
+        "creating a file under a subdirectory of a file",
+        grandparent,
+        child);
+  }
+
+
+  @Test
+  public void testMkdirUnderFile() throws Throwable {
+    describe("Verify that it is forbidden to create file/dir");
+    Path grandparent = methodPath();
+    Path parent = new Path(grandparent, "parent");
+    expectMkdirsUnderFileFails("mkdirs() under a file",
+        grandparent, parent);
+  }
+
+  @Test
+  public void testMkdirUnderFileSubdir() throws Throwable {
+    describe("Verify that it is forbidden to create file/dir/dir");
+    Path grandparent = methodPath();
+    Path parent = new Path(grandparent, "parent");
+    Path child = new Path(parent, "child");
+    expectMkdirsUnderFileFails("mkdirs() file/dir",
+        grandparent, child);
+
+    try {
 
 Review comment:
   just being curious about deeper creation .. those object stores are so troublesome here

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