| /** |
| * 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.tajo.storage; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.*; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.DistributedFileSystem; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.tajo.conf.TajoConf; |
| import org.apache.tajo.storage.text.ByteBufLineReader; |
| import org.apache.tajo.util.CommonTestingUtil; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.nio.charset.Charset; |
| import java.util.UUID; |
| |
| import static org.junit.Assert.*; |
| |
| public class TestByteBufLineReader { |
| private TajoConf conf; |
| private static String TEST_PATH = "target/test-data/TestByteBufLineReader"; |
| private Path testDir; |
| private FileSystem fs; |
| private static String LINE = "A big data warehouse system on Hadoop"; |
| |
| @Before |
| public void setUp() throws Exception { |
| conf = new TajoConf(); |
| testDir = CommonTestingUtil.getTestDir(TEST_PATH); |
| fs = testDir.getFileSystem(conf); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| } |
| |
| @Test |
| public void testReaderWithLocalFS() throws Exception { |
| Path tablePath = new Path(testDir, "testReaderWithLocalFS"); |
| Path filePath = new Path(tablePath, "data.dat"); |
| |
| FileSystem fileSystem = filePath.getFileSystem(conf); |
| assertTrue(fileSystem instanceof LocalFileSystem); |
| |
| FSDataOutputStream out = fs.create(filePath, true); |
| out.write(LINE.getBytes(Charset.defaultCharset())); |
| out.write('\n'); |
| out.close(); |
| |
| assertTrue(fs.exists(filePath)); |
| |
| FSDataInputStream inputStream = fs.open(filePath); |
| assertFalse(inputStream.getWrappedStream() instanceof ByteBufferReadable); |
| |
| ByteBufLineReader lineReader = new ByteBufLineReader(new FSDataInputChannel(inputStream)); |
| assertEquals(LINE, lineReader.readLine()); |
| lineReader.seek(0); |
| assertEquals(LINE, lineReader.readLine()); |
| assertNull(lineReader.readLine()); |
| |
| lineReader.close(); |
| fs.close(); |
| } |
| |
| @Test |
| public void testReaderWithDFS() throws Exception { |
| final Configuration conf = new HdfsConfiguration(); |
| String testDataPath = TEST_PATH + "/" + UUID.randomUUID().toString(); |
| conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, testDataPath); |
| conf.setLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, 0); |
| conf.setBoolean(DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED, true); |
| |
| final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf) |
| .numDataNodes(2).build(); |
| cluster.waitClusterUp(); |
| |
| TajoConf tajoConf = new TajoConf(conf); |
| tajoConf.setVar(TajoConf.ConfVars.ROOT_DIR, cluster.getFileSystem().getUri() + "/tajo"); |
| |
| Path tablePath = new Path("/testReaderWithDFS"); |
| Path filePath = new Path(tablePath, "data.dat"); |
| try { |
| DistributedFileSystem fs = cluster.getFileSystem(); |
| FSDataOutputStream out = fs.create(filePath, true); |
| out.write(LINE.getBytes(Charset.defaultCharset())); |
| out.write('\n'); |
| out.close(); |
| |
| assertTrue(fs.exists(filePath)); |
| FSDataInputStream inputStream = fs.open(filePath); |
| assertTrue(inputStream.getWrappedStream() instanceof ByteBufferReadable); |
| |
| ByteBufLineReader lineReader = new ByteBufLineReader(new FSDataInputChannel(inputStream)); |
| assertEquals(LINE, lineReader.readLine()); |
| lineReader.seek(0); |
| assertEquals(LINE, lineReader.readLine()); |
| assertNull(lineReader.readLine()); |
| |
| lineReader.close(); |
| fs.close(); |
| } finally { |
| cluster.shutdown(true); |
| } |
| } |
| |
| @Test |
| public void testReaderWithNIO() throws Exception { |
| Path tablePath = new Path(testDir, "testReaderWithNIO"); |
| Path filePath = new Path(tablePath, "data.dat"); |
| |
| FileSystem fileSystem = filePath.getFileSystem(conf); |
| assertTrue(fileSystem instanceof LocalFileSystem); |
| |
| FSDataOutputStream out = fs.create(filePath, true); |
| out.write(LINE.getBytes(Charset.defaultCharset())); |
| out.write('\n'); |
| out.close(); |
| |
| File file = new File(filePath.toUri()); |
| assertTrue(file.exists()); |
| |
| FileInputStream inputStream = new FileInputStream(file); |
| ByteBufLineReader lineReader = new ByteBufLineReader(new LocalFileInputChannel(inputStream)); |
| |
| assertEquals(LINE, lineReader.readLine()); |
| lineReader.seek(0); |
| assertEquals(LINE, lineReader.readLine()); |
| assertNull(lineReader.readLine()); |
| |
| lineReader.close(); |
| inputStream.close(); |
| } |
| } |