/**
* 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.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.security.Permission;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import java.util.Scanner;
import java.util.zip.GZIPOutputStream;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSInputChecker;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FsShell;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.shell.Count;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.FSDataset;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.security.UnixUserGroupInformation;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.ToolRunner;
/**
* This class tests commands from DFSShell.
*/
public class TestDFSShell extends TestCase {
static final String TEST_ROOT_DIR =
new Path(System.getProperty("test.build.data","/tmp"))
.toString().replace(' ', '+');
static Path writeFile(FileSystem fs, Path f) throws IOException {
DataOutputStream out = fs.create(f);
out.writeBytes("dhruba: " + f);
out.close();
assertTrue(fs.exists(f));
return f;
}
static Path mkdir(FileSystem fs, Path p) throws IOException {
assertTrue(fs.mkdirs(p));
assertTrue(fs.exists(p));
assertTrue(fs.getFileStatus(p).isDir());
return p;
}
static File createLocalFile(File f) throws IOException {
assertTrue(!f.exists());
PrintWriter out = new PrintWriter(f);
out.print("createLocalFile: " + f.getAbsolutePath());
out.flush();
out.close();
assertTrue(f.exists());
assertTrue(f.isFile());
return f;
}
static void show(String s) {
System.out.println(Thread.currentThread().getStackTrace()[2] + " " + s);
}
public void testZeroSizeFile() throws IOException {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = cluster.getFileSystem();
assertTrue("Not a HDFS: "+fs.getUri(),
fs instanceof DistributedFileSystem);
final DistributedFileSystem dfs = (DistributedFileSystem)fs;
try {
//create a zero size file
final File f1 = new File(TEST_ROOT_DIR, "f1");
assertTrue(!f1.exists());
assertTrue(f1.createNewFile());
assertTrue(f1.exists());
assertTrue(f1.isFile());
assertEquals(0L, f1.length());
//copy to remote
final Path root = mkdir(dfs, new Path("/test/zeroSizeFile"));
final Path remotef = new Path(root, "dst");
show("copy local " + f1 + " to remote " + remotef);
dfs.copyFromLocalFile(false, false, new Path(f1.getPath()), remotef);
//getBlockSize() should not throw exception
show("Block size = " + dfs.getFileStatus(remotef).getBlockSize());
//copy back
final File f2 = new File(TEST_ROOT_DIR, "f2");
assertTrue(!f2.exists());
dfs.copyToLocalFile(remotef, new Path(f2.getPath()));
assertTrue(f2.exists());
assertTrue(f2.isFile());
assertEquals(0L, f2.length());
f1.delete();
f2.delete();
} finally {
try {dfs.close();} catch (Exception e) {}
cluster.shutdown();
}
}
public void testRecrusiveRm() throws IOException {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = cluster.getFileSystem();
assertTrue("Not a HDFS: " + fs.getUri(),
fs instanceof DistributedFileSystem);
try {
fs.mkdirs(new Path(new Path("parent"), "child"));
try {
fs.delete(new Path("parent"), false);
assert(false); // should never reach here.
} catch(IOException e) {
//should have thrown an exception
}
try {
fs.delete(new Path("parent"), true);
} catch(IOException e) {
assert(false);
}
} finally {
try { fs.close();}catch(IOException e){};
cluster.shutdown();
}
}
public void testDu() throws IOException {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = cluster.getFileSystem();
assertTrue("Not a HDFS: "+fs.getUri(),
fs instanceof DistributedFileSystem);
final DistributedFileSystem dfs = (DistributedFileSystem)fs;
PrintStream psBackup = System.out;
ByteArrayOutputStream out = new ByteArrayOutputStream();
PrintStream psOut = new PrintStream(out);
System.setOut(psOut);
FsShell shell = new FsShell();
shell.setConf(conf);
try {
Path myPath = new Path("/test/dir");
assertTrue(fs.mkdirs(myPath));
assertTrue(fs.exists(myPath));
Path myFile = new Path("/test/dir/file");
writeFile(fs, myFile);
assertTrue(fs.exists(myFile));
Path myFile2 = new Path("/test/dir/file2");
writeFile(fs, myFile2);
assertTrue(fs.exists(myFile2));
String[] args = new String[2];
args[0] = "-du";
args[1] = "/test/dir";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
String returnString = out.toString();
out.reset();
// Check if size matchs as expected
assertTrue(returnString.contains("22"));
assertTrue(returnString.contains("23"));
} finally {
try {dfs.close();} catch (Exception e) {}
System.setOut(psBackup);
cluster.shutdown();
}
}
public void testPut() throws IOException {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = cluster.getFileSystem();
assertTrue("Not a HDFS: "+fs.getUri(),
fs instanceof DistributedFileSystem);
final DistributedFileSystem dfs = (DistributedFileSystem)fs;
try {
// remove left over crc files:
new File(TEST_ROOT_DIR, ".f1.crc").delete();
new File(TEST_ROOT_DIR, ".f2.crc").delete();
final File f1 = createLocalFile(new File(TEST_ROOT_DIR, "f1"));
final File f2 = createLocalFile(new File(TEST_ROOT_DIR, "f2"));
final Path root = mkdir(dfs, new Path("/test/put"));
final Path dst = new Path(root, "dst");
show("begin");
final Thread copy2ndFileThread = new Thread() {
public void run() {
try {
show("copy local " + f2 + " to remote " + dst);
dfs.copyFromLocalFile(false, false, new Path(f2.getPath()), dst);
} catch (IOException ioe) {
show("good " + StringUtils.stringifyException(ioe));
return;
}
//should not be here, must got IOException
assertTrue(false);
}
};
//use SecurityManager to pause the copying of f1 and begin copying f2
SecurityManager sm = System.getSecurityManager();
System.out.println("SecurityManager = " + sm);
System.setSecurityManager(new SecurityManager() {
private boolean firstTime = true;
public void checkPermission(Permission perm) {
if (firstTime) {
Thread t = Thread.currentThread();
if (!t.toString().contains("DataNode")) {
String s = "" + Arrays.asList(t.getStackTrace());
if (s.contains("FileUtil.copyContent")) {
//pause at FileUtil.copyContent
firstTime = false;
copy2ndFileThread.start();
try {Thread.sleep(5000);} catch (InterruptedException e) {}
}
}
}
}
});
show("copy local " + f1 + " to remote " + dst);
dfs.copyFromLocalFile(false, false, new Path(f1.getPath()), dst);
show("done");
try {copy2ndFileThread.join();} catch (InterruptedException e) { }
System.setSecurityManager(sm);
// copy multiple files to destination directory
final Path destmultiple = mkdir(dfs, new Path("/test/putmultiple"));
Path[] srcs = new Path[2];
srcs[0] = new Path(f1.getPath());
srcs[1] = new Path(f2.getPath());
dfs.copyFromLocalFile(false, false, srcs, destmultiple);
srcs[0] = new Path(destmultiple,"f1");
srcs[1] = new Path(destmultiple,"f2");
assertTrue(dfs.exists(srcs[0]));
assertTrue(dfs.exists(srcs[1]));
// move multiple files to destination directory
final Path destmultiple2 = mkdir(dfs, new Path("/test/movemultiple"));
srcs[0] = new Path(f1.getPath());
srcs[1] = new Path(f2.getPath());
dfs.moveFromLocalFile(srcs, destmultiple2);
assertFalse(f1.exists());
assertFalse(f2.exists());
srcs[0] = new Path(destmultiple2, "f1");
srcs[1] = new Path(destmultiple2, "f2");
assertTrue(dfs.exists(srcs[0]));
assertTrue(dfs.exists(srcs[1]));
f1.delete();
f2.delete();
} finally {
try {dfs.close();} catch (Exception e) {}
cluster.shutdown();
}
}
/** check command error outputs and exit statuses. */
public void testErrOutPut() throws Exception {
Configuration conf = new Configuration();
MiniDFSCluster cluster = null;
PrintStream bak = null;
try {
cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem srcFs = cluster.getFileSystem();
Path root = new Path("/nonexistentfile");
bak = System.err;
ByteArrayOutputStream out = new ByteArrayOutputStream();
PrintStream tmp = new PrintStream(out);
System.setErr(tmp);
String[] argv = new String[2];
argv[0] = "-cat";
argv[1] = root.toUri().getPath();
int ret = ToolRunner.run(new FsShell(), argv);
assertTrue(" -cat returned -1 ", 0>=ret);
String returned = out.toString();
assertTrue("cat does not print exceptions ",
(returned.lastIndexOf("Exception") == -1));
out.reset();
argv[0] = "-rm";
argv[1] = root.toString();
FsShell shell = new FsShell();
shell.setConf(conf);
ret = ToolRunner.run(shell, argv);
assertTrue(" -rm returned -1 ", 0>=ret);
returned = out.toString();
out.reset();
assertTrue("rm prints reasonable error ",
(returned.lastIndexOf("No such file or directory") != -1));
argv[0] = "-rmr";
argv[1] = root.toString();
ret = ToolRunner.run(shell, argv);
assertTrue(" -rmr returned -1", 0>=ret);
returned = out.toString();
assertTrue("rmr prints reasonable error ",
(returned.lastIndexOf("No such file or directory") != -1));
out.reset();
argv[0] = "-du";
argv[1] = "/nonexistentfile";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" -du prints reasonable error ",
(returned.lastIndexOf("No such file or directory") != -1));
out.reset();
argv[0] = "-dus";
argv[1] = "/nonexistentfile";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" -dus prints reasonable error",
(returned.lastIndexOf("No such file or directory") != -1));
out.reset();
argv[0] = "-ls";
argv[1] = "/nonexistenfile";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" -ls does not return Found 0 items",
(returned.lastIndexOf("Found 0") == -1));
out.reset();
argv[0] = "-ls";
argv[1] = "/nonexistentfile";
ret = ToolRunner.run(shell, argv);
assertTrue(" -lsr should fail ",
(ret < 0));
out.reset();
srcFs.mkdirs(new Path("/testdir"));
argv[0] = "-ls";
argv[1] = "/testdir";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" -ls does not print out anything ",
(returned.lastIndexOf("Found 0") == -1));
out.reset();
argv[0] = "-ls";
argv[1] = "/user/nonxistant/*";
ret = ToolRunner.run(shell, argv);
assertTrue(" -ls on nonexistent glob returns -1",
(ret < 0));
out.reset();
argv[0] = "-mkdir";
argv[1] = "/testdir";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" -mkdir returned -1 ", (ret < 0));
assertTrue(" -mkdir returned File exists",
(returned.lastIndexOf("File exists") != -1));
Path testFile = new Path("/testfile");
OutputStream outtmp = srcFs.create(testFile);
outtmp.write(testFile.toString().getBytes());
outtmp.close();
out.reset();
argv[0] = "-mkdir";
argv[1] = "/testfile";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" -mkdir returned -1", (ret < 0));
assertTrue(" -mkdir returned this is a file ",
(returned.lastIndexOf("not a directory") != -1));
out.reset();
argv = new String[3];
argv[0] = "-mv";
argv[1] = "/testfile";
argv[2] = "file";
ret = ToolRunner.run(shell, argv);
assertTrue("mv failed to rename", ret == -1);
out.reset();
argv = new String[3];
argv[0] = "-mv";
argv[1] = "/testfile";
argv[2] = "/testfiletest";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue("no output from rename",
(returned.lastIndexOf("Renamed") == -1));
out.reset();
argv[0] = "-mv";
argv[1] = "/testfile";
argv[2] = "/testfiletmp";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" unix like output",
(returned.lastIndexOf("No such file or") != -1));
out.reset();
argv = new String[1];
argv[0] = "-du";
srcFs.mkdirs(srcFs.getHomeDirectory());
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertTrue(" no error ", (ret == 0));
assertTrue("empty path specified",
(returned.lastIndexOf("empty string") == -1));
} finally {
if (bak != null) {
System.setErr(bak);
}
if (cluster != null) {
cluster.shutdown();
}
}
}
public void testURIPaths() throws Exception {
Configuration srcConf = new Configuration();
Configuration dstConf = new Configuration();
MiniDFSCluster srcCluster = null;
MiniDFSCluster dstCluster = null;
String bak = System.getProperty("test.build.data");
try{
srcCluster = new MiniDFSCluster(srcConf, 2, true, null);
File nameDir = new File(new File(bak), "dfs_tmp_uri/");
nameDir.mkdirs();
System.setProperty("test.build.data", nameDir.toString());
dstCluster = new MiniDFSCluster(dstConf, 2, true, null);
FileSystem srcFs = srcCluster.getFileSystem();
FileSystem dstFs = dstCluster.getFileSystem();
FsShell shell = new FsShell();
shell.setConf(srcConf);
//check for ls
String[] argv = new String[2];
argv[0] = "-ls";
argv[1] = dstFs.getUri().toString() + "/";
int ret = ToolRunner.run(shell, argv);
assertTrue("ls works on remote uri ", (ret==0));
//check for rm -r
dstFs.mkdirs(new Path("/hadoopdir"));
argv = new String[2];
argv[0] = "-rmr";
argv[1] = dstFs.getUri().toString() + "/hadoopdir";
ret = ToolRunner.run(shell, argv);
assertTrue("-rmr works on remote uri " + argv[1], (ret==0));
//check du
argv[0] = "-du";
argv[1] = dstFs.getUri().toString() + "/";
ret = ToolRunner.run(shell, argv);
assertTrue("du works on remote uri ", (ret ==0));
//check put
File furi = new File(TEST_ROOT_DIR, "furi");
createLocalFile(furi);
argv = new String[3];
argv[0] = "-put";
argv[1] = furi.toString();
argv[2] = dstFs.getUri().toString() + "/furi";
ret = ToolRunner.run(shell, argv);
assertTrue(" put is working ", (ret==0));
//check cp
argv[0] = "-cp";
argv[1] = dstFs.getUri().toString() + "/furi";
argv[2] = srcFs.getUri().toString() + "/furi";
ret = ToolRunner.run(shell, argv);
assertTrue(" cp is working ", (ret==0));
assertTrue(srcFs.exists(new Path("/furi")));
//check cat
argv = new String[2];
argv[0] = "-cat";
argv[1] = dstFs.getUri().toString() + "/furi";
ret = ToolRunner.run(shell, argv);
assertTrue(" cat is working ", (ret == 0));
//check chown
dstFs.delete(new Path("/furi"), true);
dstFs.delete(new Path("/hadoopdir"), true);
String file = "/tmp/chownTest";
Path path = new Path(file);
Path parent = new Path("/tmp");
Path root = new Path("/");
TestDFSShell.writeFile(dstFs, path);
runCmd(shell, "-chgrp", "-R", "herbivores", dstFs.getUri().toString() +"/*");
confirmOwner(null, "herbivores", dstFs, parent, path);
runCmd(shell, "-chown", "-R", ":reptiles", dstFs.getUri().toString() + "/");
confirmOwner(null, "reptiles", dstFs, root, parent, path);
//check if default hdfs:/// works
argv[0] = "-cat";
argv[1] = "hdfs:///furi";
ret = ToolRunner.run(shell, argv);
assertTrue(" default works for cat", (ret == 0));
argv[0] = "-ls";
argv[1] = "hdfs:///";
ret = ToolRunner.run(shell, argv);
assertTrue("default works for ls ", (ret == 0));
argv[0] = "-rmr";
argv[1] = "hdfs:///furi";
ret = ToolRunner.run(shell, argv);
assertTrue("default works for rm/rmr", (ret ==0));
} finally {
System.setProperty("test.build.data", bak);
if (null != srcCluster) {
srcCluster.shutdown();
}
if (null != dstCluster) {
dstCluster.shutdown();
}
}
}
public void testText() throws Exception {
Configuration conf = new Configuration();
MiniDFSCluster cluster = null;
PrintStream bak = null;
try {
cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = cluster.getFileSystem();
Path root = new Path("/texttest");
fs.mkdirs(root);
OutputStream zout = new GZIPOutputStream(
fs.create(new Path(root, "file.gz")));
Random r = new Random();
ByteArrayOutputStream file = new ByteArrayOutputStream();
for (int i = 0; i < 1024; ++i) {
char c = Character.forDigit(r.nextInt(26) + 10, 36);
file.write(c);
zout.write(c);
}
zout.close();
bak = System.out;
ByteArrayOutputStream out = new ByteArrayOutputStream();
System.setOut(new PrintStream(out));
String[] argv = new String[2];
argv[0] = "-text";
argv[1] = new Path(root, "file.gz").toUri().getPath();
int ret = ToolRunner.run(new FsShell(), argv);
assertTrue("-text returned -1", 0 >= ret);
file.reset();
out.reset();
assertTrue("Output doesn't match input",
Arrays.equals(file.toByteArray(), out.toByteArray()));
} finally {
if (null != bak) {
System.setOut(bak);
}
if (null != cluster) {
cluster.shutdown();
}
}
}
public void testCopyToLocal() throws IOException {
Configuration conf = new Configuration();
/* This tests some properties of ChecksumFileSystem as well.
* Make sure that we create ChecksumDFS */
conf.set("fs.hdfs.impl",
"org.apache.hadoop.hdfs.ChecksumDistributedFileSystem");
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = cluster.getFileSystem();
assertTrue("Not a HDFS: "+fs.getUri(),
fs instanceof ChecksumDistributedFileSystem);
ChecksumDistributedFileSystem dfs = (ChecksumDistributedFileSystem)fs;
FsShell shell = new FsShell();
shell.setConf(conf);
try {
String root = createTree(dfs, "copyToLocal");
// Verify copying the tree
{
try {
assertEquals(0,
runCmd(shell, "-copyToLocal", root + "*", TEST_ROOT_DIR));
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
File localroot = new File(TEST_ROOT_DIR, "copyToLocal");
File localroot2 = new File(TEST_ROOT_DIR, "copyToLocal2");
File f1 = new File(localroot, "f1");
assertTrue("Copying failed.", f1.isFile());
File f2 = new File(localroot, "f2");
assertTrue("Copying failed.", f2.isFile());
File sub = new File(localroot, "sub");
assertTrue("Copying failed.", sub.isDirectory());
File f3 = new File(sub, "f3");
assertTrue("Copying failed.", f3.isFile());
File f4 = new File(sub, "f4");
assertTrue("Copying failed.", f4.isFile());
File f5 = new File(localroot2, "f1");
assertTrue("Copying failed.", f5.isFile());
f1.delete();
f2.delete();
f3.delete();
f4.delete();
f5.delete();
sub.delete();
}
// Verify copying non existing sources do not create zero byte
// destination files
{
String[] args = {"-copyToLocal", "nosuchfile", TEST_ROOT_DIR};
try {
assertEquals(-1, shell.run(args));
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
File f6 = new File(TEST_ROOT_DIR, "nosuchfile");
assertTrue(!f6.exists());
}
} finally {
try {
dfs.close();
} catch (Exception e) {
}
cluster.shutdown();
}
}
static String createTree(FileSystem fs, String name) throws IOException {
// create a tree
// ROOT
// |- f1
// |- f2
// + sub
// |- f3
// |- f4
// ROOT2
// |- f1
String path = "/test/" + name;
Path root = mkdir(fs, new Path(path));
Path sub = mkdir(fs, new Path(root, "sub"));
Path root2 = mkdir(fs, new Path(path + "2"));
writeFile(fs, new Path(root, "f1"));
writeFile(fs, new Path(root, "f2"));
writeFile(fs, new Path(sub, "f3"));
writeFile(fs, new Path(sub, "f4"));
writeFile(fs, new Path(root2, "f1"));
mkdir(fs, new Path(root2, "sub"));
return path;
}
public void testCount() throws Exception {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
DistributedFileSystem dfs = (DistributedFileSystem)cluster.getFileSystem();
FsShell shell = new FsShell();
shell.setConf(conf);
try {
String root = createTree(dfs, "count");
// Verify the counts
runCount(root, 2, 4, conf);
runCount(root + "2", 2, 1, conf);
runCount(root + "2/f1", 0, 1, conf);
runCount(root + "2/sub", 1, 0, conf);
final FileSystem localfs = FileSystem.getLocal(conf);
Path localpath = new Path(TEST_ROOT_DIR, "testcount");
localpath = localpath.makeQualified(localfs);
localfs.mkdirs(localpath);
final String localstr = localpath.toString();
System.out.println("localstr=" + localstr);
runCount(localstr, 1, 0, conf);
assertEquals(0, new Count(new String[]{root, localstr}, 0, conf).runAll());
} finally {
try {
dfs.close();
} catch (Exception e) {
}
cluster.shutdown();
}
}
private void runCount(String path, long dirs, long files, Configuration conf
) throws IOException {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
PrintStream out = new PrintStream(bytes);
PrintStream oldOut = System.out;
System.setOut(out);
Scanner in = null;
String results = null;
try {
new Count(new String[]{path}, 0, conf).runAll();
results = bytes.toString();
in = new Scanner(results);
assertEquals(dirs, in.nextLong());
assertEquals(files, in.nextLong());
} finally {
if (in!=null) in.close();
IOUtils.closeStream(out);
System.setOut(oldOut);
System.out.println("results:\n" + results);
}
}
//throws IOException instead of Exception as shell.run() does.
private int runCmd(FsShell shell, String... args) throws IOException {
try {
return shell.run(args);
} catch (IOException e) {
throw e;
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new IOException(StringUtils.stringifyException(e));
}
}
/**
* Test chmod.
*/
void testChmod(Configuration conf, FileSystem fs, String chmodDir)
throws IOException {
FsShell shell = new FsShell();
shell.setConf(conf);
try {
//first make dir
Path dir = new Path(chmodDir);
fs.delete(dir, true);
fs.mkdirs(dir);
runCmd(shell, "-chmod", "u+rwx,g=rw,o-rwx", chmodDir);
assertEquals("rwxrw----",
fs.getFileStatus(dir).getPermission().toString());
//create an empty file
Path file = new Path(chmodDir, "file");
TestDFSShell.writeFile(fs, file);
//test octal mode
runCmd(shell, "-chmod", "644", file.toString());
assertEquals("rw-r--r--",
fs.getFileStatus(file).getPermission().toString());
//test recursive
runCmd(shell, "-chmod", "-R", "a+rwX", chmodDir);
assertEquals("rwxrwxrwx",
fs.getFileStatus(dir).getPermission().toString());
assertEquals("rw-rw-rw-",
fs.getFileStatus(file).getPermission().toString());
fs.delete(dir, true);
} finally {
try {
fs.close();
shell.close();
} catch (IOException ignored) {}
}
}
private void confirmOwner(String owner, String group,
FileSystem fs, Path... paths) throws IOException {
for(Path path : paths) {
if (owner != null) {
assertEquals(owner, fs.getFileStatus(path).getOwner());
}
if (group != null) {
assertEquals(group, fs.getFileStatus(path).getGroup());
}
}
}
public void testFilePermissions() throws IOException {
Configuration conf = new Configuration();
//test chmod on local fs
FileSystem fs = FileSystem.getLocal(conf);
testChmod(conf, fs,
(new File(TEST_ROOT_DIR, "chmodTest")).getAbsolutePath());
conf.set("dfs.permissions", "true");
//test chmod on DFS
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
fs = cluster.getFileSystem();
testChmod(conf, fs, "/tmp/chmodTest");
// test chown and chgrp on DFS:
FsShell shell = new FsShell();
shell.setConf(conf);
fs = cluster.getFileSystem();
/* For dfs, I am the super user and I can change ower of any file to
* anything. "-R" option is already tested by chmod test above.
*/
String file = "/tmp/chownTest";
Path path = new Path(file);
Path parent = new Path("/tmp");
Path root = new Path("/");
TestDFSShell.writeFile(fs, path);
runCmd(shell, "-chgrp", "-R", "herbivores", "/*", "unknownFile*");
confirmOwner(null, "herbivores", fs, parent, path);
runCmd(shell, "-chgrp", "mammals", file);
confirmOwner(null, "mammals", fs, path);
runCmd(shell, "-chown", "-R", ":reptiles", "/");
confirmOwner(null, "reptiles", fs, root, parent, path);
runCmd(shell, "-chown", "python:", "/nonExistentFile", file);
confirmOwner("python", "reptiles", fs, path);
runCmd(shell, "-chown", "-R", "hadoop:toys", "unknownFile", "/");
confirmOwner("hadoop", "toys", fs, root, parent, path);
// Test different characters in names
runCmd(shell, "-chown", "hdfs.user", file);
confirmOwner("hdfs.user", null, fs, path);
runCmd(shell, "-chown", "_Hdfs.User-10:_hadoop.users--", file);
confirmOwner("_Hdfs.User-10", "_hadoop.users--", fs, path);
runCmd(shell, "-chown", "hdfs/hadoop-core@apache.org:asf-projects", file);
confirmOwner("hdfs/hadoop-core@apache.org", "asf-projects", fs, path);
runCmd(shell, "-chgrp", "hadoop-core@apache.org/100", file);
confirmOwner(null, "hadoop-core@apache.org/100", fs, path);
cluster.shutdown();
}
/**
* Tests various options of DFSShell.
*/
public void testDFSShell() throws IOException {
Configuration conf = new Configuration();
/* This tests some properties of ChecksumFileSystem as well.
* Make sure that we create ChecksumDFS */
conf.set("fs.hdfs.impl",
"org.apache.hadoop.hdfs.ChecksumDistributedFileSystem");
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = cluster.getFileSystem();
assertTrue("Not a HDFS: "+fs.getUri(),
fs instanceof ChecksumDistributedFileSystem);
ChecksumDistributedFileSystem fileSys = (ChecksumDistributedFileSystem)fs;
FsShell shell = new FsShell();
shell.setConf(conf);
try {
// First create a new directory with mkdirs
Path myPath = new Path("/test/mkdirs");
assertTrue(fileSys.mkdirs(myPath));
assertTrue(fileSys.exists(myPath));
assertTrue(fileSys.mkdirs(myPath));
// Second, create a file in that directory.
Path myFile = new Path("/test/mkdirs/myFile");
writeFile(fileSys, myFile);
assertTrue(fileSys.exists(myFile));
Path myFile2 = new Path("/test/mkdirs/myFile2");
writeFile(fileSys, myFile2);
assertTrue(fileSys.exists(myFile2));
// Verify that rm with a pattern
{
String[] args = new String[2];
args[0] = "-rm";
args[1] = "/test/mkdirs/myFile*";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
assertFalse(fileSys.exists(myFile));
assertFalse(fileSys.exists(myFile2));
//re-create the files for other tests
writeFile(fileSys, myFile);
assertTrue(fileSys.exists(myFile));
writeFile(fileSys, myFile2);
assertTrue(fileSys.exists(myFile2));
}
// Verify that we can read the file
{
String[] args = new String[3];
args[0] = "-cat";
args[1] = "/test/mkdirs/myFile";
args[2] = "/test/mkdirs/myFile2";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run: " +
StringUtils.stringifyException(e));
}
assertTrue(val == 0);
}
fileSys.delete(myFile2, true);
// Verify that we can get with and without crc
{
File testFile = new File(TEST_ROOT_DIR, "mkdirs/myFile");
File checksumFile = new File(fileSys.getChecksumFile(
new Path(testFile.getAbsolutePath())).toString());
testFile.delete();
checksumFile.delete();
String[] args = new String[3];
args[0] = "-get";
args[1] = "/test/mkdirs";
args[2] = TEST_ROOT_DIR;
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
assertTrue("Copying failed.", testFile.exists());
assertTrue("Checksum file " + checksumFile+" is copied.", !checksumFile.exists());
testFile.delete();
}
{
File testFile = new File(TEST_ROOT_DIR, "mkdirs/myFile");
File checksumFile = new File(fileSys.getChecksumFile(
new Path(testFile.getAbsolutePath())).toString());
testFile.delete();
checksumFile.delete();
String[] args = new String[4];
args[0] = "-get";
args[1] = "-crc";
args[2] = "/test/mkdirs";
args[3] = TEST_ROOT_DIR;
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
assertTrue("Copying data file failed.", testFile.exists());
assertTrue("Checksum file " + checksumFile+" not copied.", checksumFile.exists());
testFile.delete();
checksumFile.delete();
}
// Verify that we get an error while trying to read an nonexistent file
{
String[] args = new String[2];
args[0] = "-cat";
args[1] = "/test/mkdirs/myFile1";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val != 0);
}
// Verify that we get an error while trying to delete an nonexistent file
{
String[] args = new String[2];
args[0] = "-rm";
args[1] = "/test/mkdirs/myFile1";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val != 0);
}
// Verify that we succeed in removing the file we created
{
String[] args = new String[2];
args[0] = "-rm";
args[1] = "/test/mkdirs/myFile";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
}
// Verify touch/test
{
String[] args = new String[2];
args[0] = "-touchz";
args[1] = "/test/mkdirs/noFileHere";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
args = new String[3];
args[0] = "-test";
args[1] = "-e";
args[2] = "/test/mkdirs/noFileHere";
val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
}
// Verify that cp from a directory to a subdirectory fails
{
String[] args = new String[2];
args[0] = "-mkdir";
args[1] = "/test/dir1";
int val = -1;
try {
val = shell.run(args);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
// this should fail
String[] args1 = new String[3];
args1[0] = "-cp";
args1[1] = "/test/dir1";
args1[2] = "/test/dir1/dir2";
val = 0;
try {
val = shell.run(args1);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == -1);
// this should succeed
args1[0] = "-cp";
args1[1] = "/test/dir1";
args1[2] = "/test/dir1foo";
val = -1;
try {
val = shell.run(args1);
} catch (Exception e) {
System.err.println("Exception raised from DFSShell.run " +
e.getLocalizedMessage());
}
assertTrue(val == 0);
}
} finally {
try {
fileSys.close();
} catch (Exception e) {
}
cluster.shutdown();
}
}
static List<File> getBlockFiles(MiniDFSCluster cluster) throws IOException {
List<File> files = new ArrayList<File>();
List<DataNode> datanodes = cluster.getDataNodes();
Block[][] blocks = cluster.getAllBlockReports();
for(int i = 0; i < blocks.length; i++) {
FSDataset ds = (FSDataset)datanodes.get(i).getFSDataset();
for(Block b : blocks[i]) {
files.add(ds.getBlockFile(b));
}
}
return files;
}
static void corrupt(List<File> files) throws IOException {
for(File f : files) {
StringBuilder content = new StringBuilder(DFSTestUtil.readFile(f));
char c = content.charAt(0);
content.setCharAt(0, ++c);
PrintWriter out = new PrintWriter(f);
out.print(content);
out.flush();
out.close();
}
}
static interface TestGetRunner {
String run(int exitcode, String... options) throws IOException;
}
public void testRemoteException() throws Exception {
UnixUserGroupInformation tmpUGI = new UnixUserGroupInformation("tmpname",
new String[] {
"mygroup"});
MiniDFSCluster dfs = null;
PrintStream bak = null;
try {
Configuration conf = new Configuration();
dfs = new MiniDFSCluster(conf, 2, true, null);
FileSystem fs = dfs.getFileSystem();
Path p = new Path("/foo");
fs.mkdirs(p);
fs.setPermission(p, new FsPermission((short)0700));
UnixUserGroupInformation.saveToConf(conf,
UnixUserGroupInformation.UGI_PROPERTY_NAME, tmpUGI);
FsShell fshell = new FsShell(conf);
bak = System.err;
ByteArrayOutputStream out = new ByteArrayOutputStream();
PrintStream tmp = new PrintStream(out);
System.setErr(tmp);
String[] args = new String[2];
args[0] = "-ls";
args[1] = "/foo";
int ret = ToolRunner.run(fshell, args);
assertTrue("returned should be -1", (ret == -1));
String str = out.toString();
assertTrue("permission denied printed", str.indexOf("Permission denied") != -1);
out.reset();
} finally {
if (bak != null) {
System.setErr(bak);
}
if (dfs != null) {
dfs.shutdown();
}
}
}
public void testGet() throws IOException {
DFSTestUtil.setLogLevel2All(FSInputChecker.LOG);
final Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
DistributedFileSystem dfs = (DistributedFileSystem)cluster.getFileSystem();
try {
final String fname = "testGet.txt";
final File localf = createLocalFile(new File(TEST_ROOT_DIR, fname));
final String localfcontent = DFSTestUtil.readFile(localf);
final Path root = mkdir(dfs, new Path("/test/get"));
final Path remotef = new Path(root, fname);
dfs.copyFromLocalFile(false, false, new Path(localf.getPath()), remotef);
final FsShell shell = new FsShell();
shell.setConf(conf);
TestGetRunner runner = new TestGetRunner() {
private int count = 0;
public String run(int exitcode, String... options) throws IOException {
String dst = TEST_ROOT_DIR + "/" + fname+ ++count;
String[] args = new String[options.length + 3];
args[0] = "-get";
args[args.length - 2] = remotef.toString();
args[args.length - 1] = dst;
for(int i = 0; i < options.length; i++) {
args[i + 1] = options[i];
}
show("args=" + Arrays.asList(args));
try {
assertEquals(exitcode, shell.run(args));
} catch (Exception e) {
assertTrue(StringUtils.stringifyException(e), false);
}
return exitcode == 0? DFSTestUtil.readFile(new File(dst)): null;
}
};
assertEquals(localfcontent, runner.run(0));
assertEquals(localfcontent, runner.run(0, "-ignoreCrc"));
//find and modify the block files
List<File> files = getBlockFiles(cluster);
show("files=" + files);
corrupt(files);
assertEquals(null, runner.run(-1));
String corruptedcontent = runner.run(0, "-ignoreCrc");
assertEquals(localfcontent.substring(1), corruptedcontent.substring(1));
assertEquals(localfcontent.charAt(0)+1, corruptedcontent.charAt(0));
localf.delete();
} finally {
try {dfs.close();} catch (Exception e) {}
cluster.shutdown();
}
}
public void testLsr() throws Exception {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
DistributedFileSystem dfs = (DistributedFileSystem)cluster.getFileSystem();
try {
final String root = createTree(dfs, "lsr");
dfs.mkdirs(new Path(root, "zzz"));
runLsr(new FsShell(conf), root, 0);
final Path sub = new Path(root, "sub");
dfs.setPermission(sub, new FsPermission((short)0));
final UserGroupInformation ugi = UserGroupInformation.getCurrentUGI();
final String tmpusername = ugi.getUserName() + "1";
UnixUserGroupInformation tmpUGI = new UnixUserGroupInformation(
tmpusername, new String[] {tmpusername});
UnixUserGroupInformation.saveToConf(conf,
UnixUserGroupInformation.UGI_PROPERTY_NAME, tmpUGI);
String results = runLsr(new FsShell(conf), root, -1);
assertTrue(results.contains("zzz"));
} finally {
cluster.shutdown();
}
}
private static String runLsr(final FsShell shell, String root, int returnvalue
) throws Exception {
System.out.println("root=" + root + ", returnvalue=" + returnvalue);
final ByteArrayOutputStream bytes = new ByteArrayOutputStream();
final PrintStream out = new PrintStream(bytes);
final PrintStream oldOut = System.out;
final PrintStream oldErr = System.err;
System.setOut(out);
System.setErr(out);
final String results;
try {
assertEquals(returnvalue, shell.run(new String[]{"-lsr", root}));
results = bytes.toString();
} finally {
IOUtils.closeStream(out);
System.setOut(oldOut);
System.setErr(oldErr);
}
System.out.println("results:\n" + results);
return results;
}
}