TestDFSShellGenericOptions.java
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上传日期:2018-01-08
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网格计算
开发平台:
Java
- /**
- * 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 java.io.File;
- import java.io.FileNotFoundException;
- import java.io.IOException;
- import java.io.PrintWriter;
- import junit.framework.TestCase;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.fs.FileSystem;
- import org.apache.hadoop.fs.FsShell;
- import org.apache.hadoop.fs.Path;
- import org.apache.hadoop.hdfs.server.namenode.NameNode;
- import org.apache.hadoop.net.NetUtils;
- import org.apache.hadoop.util.ToolRunner;
- public class TestDFSShellGenericOptions extends TestCase {
- public void testDFSCommand() throws IOException {
- String namenode = null;
- MiniDFSCluster cluster = null;
- try {
- Configuration conf = new Configuration();
- cluster = new MiniDFSCluster(conf, 1, true, null);
- namenode = FileSystem.getDefaultUri(conf).toString();
- String [] args = new String[4];
- args[2] = "-mkdir";
- args[3] = "/data";
- testFsOption(args, namenode);
- testConfOption(args, namenode);
- testPropertyOption(args, namenode);
- } finally {
- if (cluster != null) { cluster.shutdown(); }
- }
- }
- private void testFsOption(String [] args, String namenode) {
- // prepare arguments to create a directory /data
- args[0] = "-fs";
- args[1] = namenode;
- execute(args, namenode);
- }
- private void testConfOption(String[] args, String namenode) {
- // prepare configuration hdfs-site.xml
- File configDir = new File(new File("build", "test"), "minidfs");
- assertTrue(configDir.mkdirs());
- File siteFile = new File(configDir, "hdfs-site.xml");
- PrintWriter pw;
- try {
- pw = new PrintWriter(siteFile);
- pw.print("<?xml version="1.0"?>n"+
- "<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>n"+
- "<configuration>n"+
- " <property>n"+
- " <name>fs.default.name</name>n"+
- " <value>"+namenode+"</value>n"+
- " </property>n"+
- "</configuration>n");
- pw.close();
- // prepare arguments to create a directory /data
- args[0] = "-conf";
- args[1] = siteFile.getPath();
- execute(args, namenode);
- } catch (FileNotFoundException e) {
- e.printStackTrace();
- } finally {
- siteFile.delete();
- configDir.delete();
- }
- }
- private void testPropertyOption(String[] args, String namenode) {
- // prepare arguments to create a directory /data
- args[0] = "-D";
- args[1] = "fs.default.name="+namenode;
- execute(args, namenode);
- }
- private void execute(String [] args, String namenode) {
- FsShell shell=new FsShell();
- FileSystem fs=null;
- try {
- ToolRunner.run(shell, args);
- fs = new DistributedFileSystem(NameNode.getAddress(namenode),
- shell.getConf());
- assertTrue("Directory does not get created",
- fs.isDirectory(new Path("/data")));
- fs.delete(new Path("/data"), true);
- } catch (Exception e) {
- System.err.println(e.getMessage());
- e.printStackTrace();
- } finally {
- if (fs!=null) {
- try {
- fs.close();
- } catch (IOException ignored) {
- }
- }
- }
- }
- }