TestDistCpWithXAttrs.java
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* 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.tools;
import java.io.IOException;
import java.net.URI;
import java.util.Map;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.tools.util.DistCpTestUtils;
import org.apache.hadoop.util.Progressable;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.apache.hadoop.thirdparty.com.google.common.collect.Maps;
/**
* Tests distcp in combination with HDFS XAttrs.
*/
public class TestDistCpWithXAttrs {
private static MiniDFSCluster cluster;
private static Configuration conf;
private static FileSystem fs;
//XAttrs
private static final String name1 = "user.a1";
private static final byte[] value1 = {0x31, 0x32, 0x33};
private static final String name2 = "trusted.a2";
private static final byte[] value2 = {0x37, 0x38, 0x39};
private static final String name3 = "user.a3";
private static final byte[] value3 = null;
private static final String name4 = "user.a4";
private static final byte[] value4 = null;
private static final Path dir1 = new Path("/src/dir1");
private static final Path subDir1 = new Path(dir1, "subdir1");
private static final Path file1 = new Path("/src/file1");
private static final Path dir2 = new Path("/src/dir2");
private static final Path file2 = new Path(dir2, "file2");
private static final Path file3 = new Path(dir2, "file3");
private static final Path file4 = new Path(dir2, "file4");
private static final Path dstDir1 = new Path("/dstPreserveXAttrs/dir1");
private static final Path dstSubDir1 = new Path(dstDir1, "subdir1");
private static final Path dstFile1 = new Path("/dstPreserveXAttrs/file1");
private static final Path dstDir2 = new Path("/dstPreserveXAttrs/dir2");
private static final Path dstFile2 = new Path(dstDir2, "file2");
private static final Path dstFile3 = new Path(dstDir2, "file3");
private static final Path dstFile4 = new Path(dstDir2, "file4");
private static final String rootedSrcName = "/src";
@BeforeClass
public static void init() throws Exception {
initCluster(true, true);
fs.mkdirs(subDir1);
fs.create(file1).close();
fs.mkdirs(dir2);
fs.create(file2).close();
fs.create(file3).close();
fs.create(file4).close();
// dir1
fs.setXAttr(dir1, name1, value1);
fs.setXAttr(dir1, name2, value2);
// subDir1
fs.setXAttr(subDir1, name1, value1);
fs.setXAttr(subDir1, name3, value3);
// file1
fs.setXAttr(file1, name1, value1);
fs.setXAttr(file1, name2, value2);
fs.setXAttr(file1, name3, value3);
// dir2
fs.setXAttr(dir2, name2, value2);
// file2
fs.setXAttr(file2, name1, value1);
fs.setXAttr(file2, name4, value4);
// file3
fs.setXAttr(file3, name3, value3);
fs.setXAttr(file3, name4, value4);
}
@AfterClass
public static void shutdown() {
IOUtils.cleanupWithLogger(null, fs);
if (cluster != null) {
cluster.shutdown();
}
}
@Test
public void testPreserveXAttrs() throws Exception {
DistCpTestUtils.assertRunDistCp(DistCpConstants.SUCCESS, rootedSrcName,
"/dstPreserveXAttrs", "-px", conf);
// dstDir1
Map<String, byte[]> xAttrs = Maps.newHashMap();
xAttrs.put(name1, value1);
xAttrs.put(name2, value2);
DistCpTestUtils.assertXAttrs(dstDir1, fs, xAttrs);
// dstSubDir1
xAttrs.clear();
xAttrs.put(name1, value1);
xAttrs.put(name3, new byte[0]);
DistCpTestUtils.assertXAttrs(dstSubDir1, fs, xAttrs);
// dstFile1
xAttrs.clear();
xAttrs.put(name1, value1);
xAttrs.put(name2, value2);
xAttrs.put(name3, new byte[0]);
DistCpTestUtils.assertXAttrs(dstFile1, fs, xAttrs);
// dstDir2
xAttrs.clear();
xAttrs.put(name2, value2);
DistCpTestUtils.assertXAttrs(dstDir2, fs, xAttrs);
// dstFile2
xAttrs.clear();
xAttrs.put(name1, value1);
xAttrs.put(name4, new byte[0]);
DistCpTestUtils.assertXAttrs(dstFile2, fs, xAttrs);
// dstFile3
xAttrs.clear();
xAttrs.put(name3, new byte[0]);
xAttrs.put(name4, new byte[0]);
DistCpTestUtils.assertXAttrs(dstFile3, fs, xAttrs);
// dstFile4
xAttrs.clear();
DistCpTestUtils.assertXAttrs(dstFile4, fs, xAttrs);
}
@Test
public void testXAttrsNotEnabled() throws Exception {
try {
restart(false);
DistCpTestUtils.assertRunDistCp(DistCpConstants.XATTRS_NOT_SUPPORTED,
rootedSrcName, "/dstXAttrsNotEnabled", "-px", conf);
} finally {
restart(true);
}
}
@Test
public void testXAttrsNotImplemented() throws Exception {
DistCpTestUtils.assertRunDistCp(DistCpConstants.XATTRS_NOT_SUPPORTED,
rootedSrcName, "stubfs://dstXAttrsNotImplemented", "-px", conf);
}
/**
* Stub FileSystem implementation used for testing the case of attempting
* distcp with XAttrs preserved on a file system that does not support XAttrs.
* The base class implementation throws UnsupportedOperationException for
* the XAttr methods, so we don't need to override them.
*/
public static class StubFileSystem extends FileSystem {
@Override
public FSDataOutputStream append(Path f, int bufferSize,
Progressable progress) throws IOException {
return null;
}
@Override
public FSDataOutputStream create(Path f, FsPermission permission,
boolean overwrite, int bufferSize, short replication, long blockSize,
Progressable progress) throws IOException {
return null;
}
@Override
public boolean delete(Path f, boolean recursive) throws IOException {
return false;
}
@Override
public FileStatus getFileStatus(Path f) throws IOException {
return null;
}
@Override
public URI getUri() {
return URI.create("stubfs:///");
}
@Override
public Path getWorkingDirectory() {
return new Path(Path.SEPARATOR);
}
@Override
public FileStatus[] listStatus(Path f) throws IOException {
return new FileStatus[0];
}
@Override
public boolean mkdirs(Path f, FsPermission permission) throws IOException {
return false;
}
@Override
public FSDataInputStream open(Path f, int bufferSize) throws IOException {
return null;
}
@Override
public boolean rename(Path src, Path dst) throws IOException {
return false;
}
@Override
public void setWorkingDirectory(Path dir) {
}
}
/**
* Initialize the cluster, wait for it to become active, and get FileSystem.
*
* @param format if true, format the NameNode and DataNodes before starting up
* @param xAttrsEnabled if true, XAttr support is enabled
* @throws Exception if any step fails
*/
private static void initCluster(boolean format, boolean xAttrsEnabled)
throws Exception {
conf = new Configuration();
conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_XATTRS_ENABLED_KEY, xAttrsEnabled);
conf.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY, "stubfs:///");
conf.setClass("fs.stubfs.impl", StubFileSystem.class, FileSystem.class);
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).format(format)
.build();
cluster.waitActive();
fs = cluster.getFileSystem();
}
/**
* Restarts the cluster with XAttrs enabled or disabled.
*
* @param xAttrsEnabled if true, XAttr support is enabled
* @throws Exception if any step fails
*/
private static void restart(boolean xAttrsEnabled) throws Exception {
shutdown();
initCluster(false, xAttrsEnabled);
}
}