/**
* 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.mapred;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.LocatedFileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.PathFilter;
import org.apache.hadoop.fs.RawLocalFileSystem;
import org.apache.hadoop.fs.RemoteIterator;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import com.google.common.collect.Lists;
@RunWith(value = Parameterized.class)
public class TestFileInputFormat {
private static final Log LOG = LogFactory.getLog(TestFileInputFormat.class);
private static String testTmpDir = System.getProperty("test.build.data", "/tmp");
private static final Path TEST_ROOT_DIR = new Path(testTmpDir, "TestFIF");
private static FileSystem localFs;
private int numThreads;
public TestFileInputFormat(int numThreads) {
this.numThreads = numThreads;
LOG.info("Running with numThreads: " + numThreads);
}
@Parameters
public static Collection<Object[]> data() {
Object[][] data = new Object[][] { { 1 }, { 5 }};
return Arrays.asList(data);
}
@Before
public void setup() throws IOException {
LOG.info("Using Test Dir: " + TEST_ROOT_DIR);
localFs = FileSystem.getLocal(new Configuration());
localFs.delete(TEST_ROOT_DIR, true);
localFs.mkdirs(TEST_ROOT_DIR);
}
@After
public void cleanup() throws IOException {
localFs.delete(TEST_ROOT_DIR, true);
}
@Test
public void testListLocatedStatus() throws Exception {
Configuration conf = getConfiguration();
conf.setBoolean("fs.test.impl.disable.cache", false);
conf.setInt(FileInputFormat.LIST_STATUS_NUM_THREADS, numThreads);
conf.set(org.apache.hadoop.mapreduce.lib.input.FileInputFormat.INPUT_DIR,
"test:///a1/a2");
MockFileSystem mockFs =
(MockFileSystem) new Path("test:///").getFileSystem(conf);
Assert.assertEquals("listLocatedStatus already called",
0, mockFs.numListLocatedStatusCalls);
JobConf job = new JobConf(conf);
TextInputFormat fileInputFormat = new TextInputFormat();
fileInputFormat.configure(job);
InputSplit[] splits = fileInputFormat.getSplits(job, 1);
Assert.assertEquals("Input splits are not correct", 2, splits.length);
Assert.assertEquals("listLocatedStatuss calls",
1, mockFs.numListLocatedStatusCalls);
FileSystem.closeAll();
}
@Test
public void testSplitLocationInfo() throws Exception {
Configuration conf = getConfiguration();
conf.set(org.apache.hadoop.mapreduce.lib.input.FileInputFormat.INPUT_DIR,
"test:///a1/a2");
JobConf job = new JobConf(conf);
TextInputFormat fileInputFormat = new TextInputFormat();
fileInputFormat.configure(job);
FileSplit[] splits = (FileSplit[]) fileInputFormat.getSplits(job, 1);
String[] locations = splits[0].getLocations();
Assert.assertEquals(2, locations.length);
SplitLocationInfo[] locationInfo = splits[0].getLocationInfo();
Assert.assertEquals(2, locationInfo.length);
SplitLocationInfo localhostInfo = locations[0].equals("localhost") ?
locationInfo[0] : locationInfo[1];
SplitLocationInfo otherhostInfo = locations[0].equals("otherhost") ?
locationInfo[0] : locationInfo[1];
Assert.assertTrue(localhostInfo.isOnDisk());
Assert.assertTrue(localhostInfo.isInMemory());
Assert.assertTrue(otherhostInfo.isOnDisk());
Assert.assertFalse(otherhostInfo.isInMemory());
}
@Test
public void testListStatusSimple() throws IOException {
Configuration conf = new Configuration();
conf.setInt(FileInputFormat.LIST_STATUS_NUM_THREADS, numThreads);
List<Path> expectedPaths = org.apache.hadoop.mapreduce.lib.input.TestFileInputFormat
.configureTestSimple(conf, localFs);
JobConf jobConf = new JobConf(conf);
TextInputFormat fif = new TextInputFormat();
fif.configure(jobConf);
FileStatus[] statuses = fif.listStatus(jobConf);
org.apache.hadoop.mapreduce.lib.input.TestFileInputFormat
.verifyFileStatuses(expectedPaths, Lists.newArrayList(statuses),
localFs);
}
@Test
public void testListStatusNestedRecursive() throws IOException {
Configuration conf = new Configuration();
conf.setInt(FileInputFormat.LIST_STATUS_NUM_THREADS, numThreads);
List<Path> expectedPaths = org.apache.hadoop.mapreduce.lib.input.TestFileInputFormat
.configureTestNestedRecursive(conf, localFs);
JobConf jobConf = new JobConf(conf);
TextInputFormat fif = new TextInputFormat();
fif.configure(jobConf);
FileStatus[] statuses = fif.listStatus(jobConf);
org.apache.hadoop.mapreduce.lib.input.TestFileInputFormat
.verifyFileStatuses(expectedPaths, Lists.newArrayList(statuses),
localFs);
}
@Test
public void testListStatusNestedNonRecursive() throws IOException {
Configuration conf = new Configuration();
conf.setInt(FileInputFormat.LIST_STATUS_NUM_THREADS, numThreads);
List<Path> expectedPaths = org.apache.hadoop.mapreduce.lib.input.TestFileInputFormat
.configureTestNestedNonRecursive(conf, localFs);
JobConf jobConf = new JobConf(conf);
TextInputFormat fif = new TextInputFormat();
fif.configure(jobConf);
FileStatus[] statuses = fif.listStatus(jobConf);
org.apache.hadoop.mapreduce.lib.input.TestFileInputFormat
.verifyFileStatuses(expectedPaths, Lists.newArrayList(statuses),
localFs);
}
@Test
public void testListStatusErrorOnNonExistantDir() throws IOException {
Configuration conf = new Configuration();
conf.setInt(FileInputFormat.LIST_STATUS_NUM_THREADS, numThreads);
org.apache.hadoop.mapreduce.lib.input.TestFileInputFormat
.configureTestErrorOnNonExistantDir(conf, localFs);
JobConf jobConf = new JobConf(conf);
TextInputFormat fif = new TextInputFormat();
fif.configure(jobConf);
try {
fif.listStatus(jobConf);
Assert.fail("Expecting an IOException for a missing Input path");
} catch (IOException e) {
Path expectedExceptionPath = new Path(TEST_ROOT_DIR, "input2");
expectedExceptionPath = localFs.makeQualified(expectedExceptionPath);
Assert.assertTrue(e instanceof InvalidInputException);
Assert.assertEquals(
"Input path does not exist: " + expectedExceptionPath.toString(),
e.getMessage());
}
}
private Configuration getConfiguration() {
Configuration conf = new Configuration();
conf.set("fs.test.impl.disable.cache", "true");
conf.setClass("fs.test.impl", MockFileSystem.class, FileSystem.class);
conf.set(org.apache.hadoop.mapreduce.lib.input.FileInputFormat.INPUT_DIR,
"test:///a1");
return conf;
}
static class MockFileSystem extends RawLocalFileSystem {
int numListLocatedStatusCalls = 0;
@Override
public FileStatus[] listStatus(Path f) throws FileNotFoundException,
IOException {
if (f.toString().equals("test:/a1")) {
return new FileStatus[] {
new FileStatus(0, true, 1, 150, 150, new Path("test:/a1/a2")),
new FileStatus(10, false, 1, 150, 150, new Path("test:/a1/file1")) };
} else if (f.toString().equals("test:/a1/a2")) {
return new FileStatus[] {
new FileStatus(10, false, 1, 150, 150,
new Path("test:/a1/a2/file2")),
new FileStatus(10, false, 1, 151, 150,
new Path("test:/a1/a2/file3")) };
}
return new FileStatus[0];
}
@Override
public FileStatus[] globStatus(Path pathPattern, PathFilter filter)
throws IOException {
return new FileStatus[] { new FileStatus(10, true, 1, 150, 150,
pathPattern) };
}
@Override
public FileStatus[] listStatus(Path f, PathFilter filter)
throws FileNotFoundException, IOException {
return this.listStatus(f);
}
@Override
public BlockLocation[] getFileBlockLocations(Path p, long start, long len)
throws IOException {
return new BlockLocation[] {
new BlockLocation(new String[] { "localhost:50010", "otherhost:50010" },
new String[] { "localhost", "otherhost" }, new String[] { "localhost" },
new String[0], 0, len, false) };
}
@Override
protected RemoteIterator<LocatedFileStatus> listLocatedStatus(Path f,
PathFilter filter) throws FileNotFoundException, IOException {
++numListLocatedStatusCalls;
return super.listLocatedStatus(f, filter);
}
}
}