TestDFSMkdirs.java
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上传日期:2018-01-08
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- /**
- * 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.hdfs;
- import junit.framework.TestCase;
- import java.io.*;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.fs.FileSystem;
- import org.apache.hadoop.fs.Path;
- /**
- * This class tests that the DFS command mkdirs cannot create subdirectories
- * from a file when passed an illegal path. HADOOP-281.
- */
- public class TestDFSMkdirs extends TestCase {
- private void writeFile(FileSystem fileSys, Path name) throws IOException {
- DataOutputStream stm = fileSys.create(name);
- stm.writeBytes("wchien");
- stm.close();
- }
-
- /**
- * Tests mkdirs can create a directory that does not exist and will
- * not create a subdirectory off a file.
- */
- public void testDFSMkdirs() throws IOException {
- Configuration conf = new Configuration();
- MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
- FileSystem fileSys = cluster.getFileSystem();
- try {
- // First create a new directory with mkdirs
- Path myPath = new Path("/test/mkdirs");
- assertTrue(fileSys.mkdirs(myPath));
- assertTrue(fileSys.exists(myPath));
- assertTrue(fileSys.mkdirs(myPath));
- // Second, create a file in that directory.
- Path myFile = new Path("/test/mkdirs/myFile");
- writeFile(fileSys, myFile);
-
- // Third, use mkdir to create a subdirectory off of that file,
- // and check that it fails.
- Path myIllegalPath = new Path("/test/mkdirs/myFile/subdir");
- Boolean exist = true;
- try {
- fileSys.mkdirs(myIllegalPath);
- } catch (IOException e) {
- exist = false;
- }
- assertFalse(exist);
- assertFalse(fileSys.exists(myIllegalPath));
- fileSys.delete(myFile, true);
-
- } finally {
- fileSys.close();
- cluster.shutdown();
- }
- }
- }