| /** |
| * 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.server.namenode; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.protocol.FSConstants.SafeModeAction; |
| import org.apache.hadoop.io.IOUtils; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestBBWBlockReport { |
| |
| private final Path src = new Path(System.getProperty("test.build.data", |
| "/tmp"), "testfile"); |
| |
| private Configuration conf = null; |
| |
| private final String fileContent = "PartialBlockReadTest"; |
| |
| @Before |
| public void setUp() { |
| conf = new Configuration(); |
| conf.setInt("ipc.client.connection.maxidletime", 1000); |
| } |
| |
| @Test(timeout = 60000) |
| // timeout is mainly for safe mode |
| public void testDNShouldSendBBWReportIfAppendOn() throws Exception { |
| FileSystem fileSystem = null; |
| FSDataOutputStream outStream = null; |
| MiniDFSCluster cluster = new MiniDFSCluster(conf, 1, true, null); |
| try { |
| fileSystem = cluster.getFileSystem(); |
| // Keep open stream |
| outStream = writeFileAndSync(fileSystem, src, fileContent); |
| // Parameter true will ensure that NN came out of safemode |
| cluster.restartNameNode(true); |
| assertEquals( |
| "Not able to read the synced block content after NameNode restart (with append support)", |
| fileContent, getFileContentFromDFS(fileSystem)); |
| } finally { |
| if (null != fileSystem) |
| fileSystem.close(); |
| if (null != outStream) |
| outStream.close(); |
| cluster.shutdown(); |
| } |
| } |
| |
| @Test |
| public void testDNShouldNotSendBBWReportIfAppendOff() throws Exception { |
| FileSystem fileSystem = null; |
| FSDataOutputStream outStream = null; |
| // disable the append support |
| conf.setBoolean("dfs.support.append", false); |
| MiniDFSCluster cluster = new MiniDFSCluster(conf, 1, true, null); |
| try { |
| fileSystem = cluster.getFileSystem(); |
| // Keep open stream |
| outStream = writeFileAndSync(fileSystem, src, fileContent); |
| cluster.restartNameNode(false); |
| Thread.sleep(2000); |
| assertEquals( |
| "Able to read the synced block content after NameNode restart (without append support", |
| 0, getFileContentFromDFS(fileSystem).length()); |
| } finally { |
| // NN will not come out of safe mode. So exited the safemode forcibly to |
| // clean the resources. |
| cluster.getNameNode().setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| if (null != fileSystem) |
| fileSystem.close(); |
| if (null != outStream) |
| outStream.close(); |
| cluster.shutdown(); |
| } |
| } |
| |
| private String getFileContentFromDFS(FileSystem fs) throws IOException { |
| ByteArrayOutputStream bio = new ByteArrayOutputStream(); |
| IOUtils.copyBytes(fs.open(src), bio, conf, true); |
| return new String(bio.toByteArray()); |
| } |
| |
| private FSDataOutputStream writeFileAndSync(FileSystem fs, Path src, |
| String fileContent) throws IOException { |
| FSDataOutputStream fo = fs.create(src); |
| fo.writeBytes(fileContent); |
| fo.sync(); |
| return fo; |
| } |
| } |