| /** |
| * 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.IOException; |
| import java.util.Random; |
| |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.apache.hadoop.test.GenericTestUtils.LogCapturer; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| public class TestDataStream { |
| static MiniDFSCluster cluster; |
| static int PACKET_SIZE = 1024; |
| |
| @BeforeClass |
| public static void setup() throws IOException { |
| Configuration conf = new Configuration(); |
| conf.setInt(HdfsClientConfigKeys.DFS_CLIENT_WRITE_PACKET_SIZE_KEY, |
| PACKET_SIZE); |
| conf.setInt(HdfsClientConfigKeys.DFS_CLIENT_SLOW_IO_WARNING_THRESHOLD_KEY, |
| 10000); |
| conf.setInt(HdfsClientConfigKeys.DFS_CLIENT_SOCKET_TIMEOUT_KEY, 60000); |
| cluster = new MiniDFSCluster.Builder(conf).build(); |
| } |
| |
| @Test(timeout = 60000) |
| public void testDfsClient() throws IOException, InterruptedException { |
| LogCapturer logs = GenericTestUtils.LogCapturer.captureLogs(LogFactory |
| .getLog(DataStreamer.class)); |
| byte[] toWrite = new byte[PACKET_SIZE]; |
| new Random(1).nextBytes(toWrite); |
| final Path path = new Path("/file1"); |
| final DistributedFileSystem dfs = cluster.getFileSystem(); |
| FSDataOutputStream out = null; |
| out = dfs.create(path, false); |
| |
| out.write(toWrite); |
| out.write(toWrite); |
| out.hflush(); |
| |
| //Wait to cross slow IO warning threshold |
| Thread.sleep(15 * 1000); |
| |
| out.write(toWrite); |
| out.write(toWrite); |
| out.hflush(); |
| |
| //Wait for capturing logs in busy cluster |
| Thread.sleep(5 * 1000); |
| |
| out.close(); |
| logs.stopCapturing(); |
| GenericTestUtils.assertDoesNotMatch(logs.getOutput(), |
| "Slow ReadProcessor read fields for block"); |
| } |
| |
| @AfterClass |
| public static void tearDown() { |
| cluster.shutdown(); |
| } |
| |
| } |