/**
* 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.server.datanode;
import static org.junit.Assert.*;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.AppendTestUtil;
import org.apache.hadoop.hdfs.MiniAvatarCluster;
import org.apache.hadoop.hdfs.TestFileCreation;
import org.apache.hadoop.hdfs.MiniAvatarCluster.NameNodeInfo;
import org.apache.hadoop.hdfs.server.namenode.AvatarNode;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.zookeeper.server.quorum.QuorumPeerConfig.ConfigException;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestAvatarDataNodeMultipleRegistrations {
private static final Log LOG =
LogFactory.getLog(TestAvatarDataNodeMultipleRegistrations.class);
Configuration conf;
boolean simulatedStorage = false;
static final long seed = 0xDEADBEEFL;
static final int blockSize = 8192;
static final int numBlocks = 2;
static final int fileSize = numBlocks * blockSize + 1;
@BeforeClass
public static void setUpClass() throws Exception {
MiniAvatarCluster.createAndStartZooKeeper();
}
@Before
public void setUp() throws Exception {
conf = new Configuration();
// populate repl queues on standby (in safe mode)
conf.setFloat("dfs.namenode.replqueue.threshold-pct", 0f);
conf.setLong("fs.avatar.standbyfs.initinterval", 1000);
conf.setLong("fs.avatar.standbyfs.checkinterval", 1000);
}
/**
* start multiple NNs and single DN and verifies per BP registrations and
* handshakes.
*
* @throws IOException
*/
@Test
public void test2NNRegistration()
throws IOException, ConfigException, InterruptedException{
MiniAvatarCluster cluster = new MiniAvatarCluster(conf, 1, true, null, null, 2, true);
try {
NameNodeInfo nn1 = cluster.getNameNode(0);
NameNodeInfo nn2 = cluster.getNameNode(1);
AvatarNode nn1zero = nn1.avatars.get(0).avatar;
AvatarNode nn1one = nn1.avatars.get(1).avatar;
AvatarNode nn2zero = nn2.avatars.get(0).avatar;
AvatarNode nn2one = nn2.avatars.get(1).avatar;
assertNotNull("cannot create nn1 avatar 0", nn1zero);
assertNotNull("cannot create nn1 avatar 1", nn1one);
assertNotNull("cannot create nn2 avatar 0", nn2zero);
assertNotNull("cannot create nn2 avatar 1", nn2one);
int ns1zero = nn1zero.getNamespaceID();
int ns1one = nn1one.getNamespaceID();
assertEquals("namespace ids for namenode 1 should be the same",
ns1zero, ns1one);
int ns2zero = nn2zero.getNamespaceID();
int ns2one = nn2one.getNamespaceID();
assertEquals("namespace ids for namenode 2 should be the same",
ns2zero, ns2one);
int lv1zero = nn1zero.getFSImage().getLayoutVersion();
int lv1one = nn1one.getFSImage().getLayoutVersion();
int lv2zero = nn2zero.getFSImage().getLayoutVersion();
int lv2one = nn2one.getFSImage().getLayoutVersion();
assertNotSame("namespace ids should be different", ns1zero, ns2zero);
LOG.info("nn1zero: lv=" + lv1zero + ";uri=" + nn1zero.getNameNodeAddress());
LOG.info("nn1one: lv=" + lv1one + ";uri=" + nn1one.getNameNodeAddress());
LOG.info("nn2zero: lv=" + lv2zero + ";uri=" + nn2zero.getNameNodeAddress());
LOG.info("nn2one: lv=" + lv2one + ";uri=" + nn2one.getNameNodeAddress());
// check number of volumes in fsdataset
AvatarDataNode dn = cluster.getDataNodes().get(0);
for (NamespaceService nsos : dn.getAllNamespaceServices()) {
LOG.info("reg: nsid =" + nsos.getNamespaceId() + "; name="
+ nsos.getNsRegistration().name + "; sid="
+ nsos.getNsRegistration().storageID + "; nna="
+ nsos.getNNSocketAddress());
}
NamespaceService nsos1 = dn.getAllNamespaceServices()[0];
NamespaceService nsos2 = dn.getAllNamespaceServices()[1];
// The order of bpos is not guaranteed, so fix the order
if (nsos1.getNNSocketAddress().equals(nn2zero.getNameNodeDNAddress())) {
NamespaceService tmp = nsos1;
nsos1 = nsos2;
nsos2 = tmp;
}
assertEquals("wrong nn address", nsos1.getNNSocketAddress(),
nn1zero.getNameNodeDNAddress());
assertEquals("wrong nn address", nsos2.getNNSocketAddress(),
nn2zero.getNameNodeDNAddress());
assertEquals("wrong nsid", nsos1.getNamespaceId(), ns1zero);
assertEquals("wrong nsid", nsos2.getNamespaceId(), ns2zero);
} finally {
cluster.shutDown();
}
}
/**
* starts single nn and single dn and verifies registration and handshake
*
* @throws IOException
*/
@Test
public void testFedSingleNN()
throws IOException, ConfigException, InterruptedException {
MiniAvatarCluster cluster = new MiniAvatarCluster(conf, 1, true, null, null, 1, true);
try {
NameNodeInfo nn1 = cluster.getNameNode(0);
AvatarNode nn1zero = nn1.avatars.get(0).avatar;
AvatarNode nn1one = nn1.avatars.get(1).avatar;
assertNotNull("cannot create nn1 zero", nn1zero);
assertNotNull("cannot create nn1 one", nn1one);
int nsid1zero = nn1zero.getNamespaceID();
int nsid1one = nn1one.getNamespaceID();
assertEquals("namespace ids for namenode 1 should be the same",
nsid1zero, nsid1one);
int lv1zero = nn1zero.getFSImage().getLayoutVersion();
int lv1one = nn1one.getFSImage().getLayoutVersion();
LOG.info("nn1: lv=" + lv1zero + ";nsid=" + nsid1zero + ";uri="
+ nn1zero.getNameNodeAddress());
LOG.info("nn1: lv=" + lv1one + ";nsid=" + nsid1one + ";uri="
+ nn1one.getNameNodeAddress());
// check number of vlumes in fsdataset
AvatarDataNode dn = cluster.getDataNodes().get(0);
for (NamespaceService nsos : dn.getAllNamespaceServices()) {
LOG.info("reg: nsid =" + nsos.getNamespaceId() + "; name="
+ nsos.getNsRegistration().name + "; sid="
+ nsos.getNsRegistration().storageID + "; nna="
+ nsos.getNNSocketAddress());
}
// try block report
NamespaceService nsos1 = dn.getAllNamespaceServices()[0];
nsos1.scheduleBlockReport(0);
assertEquals("wrong nn address", nsos1.getNNSocketAddress(),
nn1zero.getNameNodeDNAddress());
assertEquals("wrong nsid", nsos1.getNamespaceId(), nsid1zero);
cluster.shutDown();
// Ensure all the BPOfferService threads are shutdown
assertEquals(0, dn.getAllNamespaceServices().length);
cluster = null;
} finally {
if (cluster != null) {
cluster.shutDown();
}
}
}
@Test
public void testMiniAvatarClusterWithMultipleNN()
throws IOException, ConfigException, InterruptedException {
Configuration conf = new Configuration();
// start Federated cluster and add a node.
MiniAvatarCluster cluster = new MiniAvatarCluster(conf, 1, true, null, null, 2, true);
Assert.assertNotNull(cluster);
Assert.assertEquals("(1)Should be 2 namenodes", 2, cluster.getNumNameNodes());
// add a node
cluster.addNameNode(conf);
Assert.assertEquals("(1)Should be 3 namenodes", 3, cluster.getNumNameNodes());
cluster.shutDown();
// 2. start with Federation flag set
conf = new Configuration();
cluster = new MiniAvatarCluster(conf, 1, true, null, null, 1, true);
Assert.assertNotNull(cluster);
Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes());
// add a node
cluster.addNameNode(conf);
Assert.assertEquals("(2)Should be 2 namenodes", 2, cluster.getNumNameNodes());
cluster.shutDown();
// 3. start non-federated
conf = new Configuration();
cluster = new MiniAvatarCluster(conf, 1, true, null, null);
Assert.assertNotNull(cluster);
Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes());
// add a node
try {
cluster.addNameNode(conf);
Assert.fail("shouldn't be able to add another NN to non federated cluster");
} catch (IOException e) {
// correct
Assert.assertTrue(e.getMessage().startsWith("cannot add namenode"));
Assert.assertEquals("(3)Should be 1 namenodes", 1, cluster.getNumNameNodes());
} finally {
cluster.shutDown();
}
}
/**
* Test that file data becomes available before file is closed.
*/
@Test
public void testFileCreation()
throws IOException, ConfigException, InterruptedException {
Configuration conf = new Configuration();
if (simulatedStorage) {
conf.setBoolean(SimulatedFSDataset.CONFIG_PROPERTY_SIMULATED, true);
}
MiniAvatarCluster cluster = new MiniAvatarCluster(conf, 1, true, null, null, 3, true);
try {
for (int i = 0; i < cluster.getNumNameNodes(); i++) {
FileSystem fs = cluster.getFileSystem(i);
//
// check that / exists
//
Path path = new Path("/");
System.out.println("Path : \"" + path.toString() + "\"");
System.out.println(fs.getFileStatus(path).isDir());
assertTrue("/ should be a directory",
fs.getFileStatus(path).isDir() == true);
//
// Create a directory inside /, then try to overwrite it
//
Path dir1 = new Path("/test_dir");
fs.mkdirs(dir1);
System.out.println("createFile: Creating " + dir1.getName() +
" for overwrite of existing directory.");
try {
fs.create(dir1, true); // Create path, overwrite=true
fs.close();
assertTrue("Did not prevent directory from being overwritten.", false);
} catch (IOException ie) {
if (!ie.getMessage().contains("already exists as a directory."))
throw ie;
}
// create a new file in home directory. Do not close it.
//
Path file1 = new Path("filestatus.dat");
FSDataOutputStream stm = TestFileCreation.createFile(fs, file1, 1);
// verify that file exists in FS namespace
assertTrue(file1 + " should be a file",
fs.getFileStatus(file1).isDir() == false);
System.out.println("Path : \"" + file1 + "\"");
// write to file
TestFileCreation.writeFile(stm);
// Make sure a client can read it before it is closed.
checkFile(fs, file1, 1);
// verify that file size has changed
long len = fs.getFileStatus(file1).getLen();
assertTrue(file1 + " should be of size " + (numBlocks * blockSize) +
" but found to be of size " + len,
len == numBlocks * blockSize);
stm.close();
// verify that file size has changed to the full size
len = fs.getFileStatus(file1).getLen();
assertTrue(file1 + " should be of size " + fileSize +
" but found to be of size " + len,
len == fileSize);
// Check storage usage
// can't check capacities for real storage since the OS file system may be changing under us.
if (simulatedStorage) {
AvatarDataNode dn = cluster.getDataNodes().get(0);
int namespaceId = cluster.getNameNode(i).avatars.get(0).avatar.getNamespaceID();
assertEquals(fileSize, dn.getFSDataset().getNSUsed(namespaceId));
//Because all namespaces share the same simulated dataset
assertEquals(SimulatedFSDataset.DEFAULT_CAPACITY-fileSize*(i+1),
dn.getFSDataset().getRemaining());
}
}
} finally {
cluster.shutDown();
}
}
/**
* Test that file data becomes available before file is closed.
*/
@Test
public void testFileCreationSimulated()
throws IOException, ConfigException, InterruptedException {
simulatedStorage = true;
testFileCreation();
simulatedStorage = false;
}
//
// verify that the data written to the full blocks are sane
//
private void checkFile(FileSystem fileSys, Path name, int repl)
throws IOException {
boolean done = false;
// wait till all full blocks are confirmed by the datanodes.
while (!done) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {}
done = true;
BlockLocation[] locations = fileSys.getFileBlockLocations(
fileSys.getFileStatus(name), 0, fileSize);
if (locations.length < numBlocks) {
done = false;
continue;
}
for (int idx = 0; idx < locations.length; idx++) {
if (locations[idx].getHosts().length < repl) {
done = false;
break;
}
}
}
FSDataInputStream stm = fileSys.open(name);
final byte[] expected;
if (simulatedStorage) {
expected = new byte[numBlocks * blockSize];
for (int i= 0; i < expected.length; i++) {
expected[i] = SimulatedFSDataset.DEFAULT_DATABYTE;
}
} else {
expected = AppendTestUtil.randomBytes(seed, numBlocks*blockSize);
}
// do a sanity check. Read the file
byte[] actual = new byte[numBlocks * blockSize];
stm.readFully(0, actual);
stm.close();
checkData(actual, 0, expected, "Read 1");
}
static private void checkData(byte[] actual, int from, byte[] expected, String message) {
for (int idx = 0; idx < actual.length; idx++) {
assertEquals(message+" byte "+(from+idx)+" differs. expected "+
expected[from+idx]+" actual "+actual[idx],
expected[from+idx], actual[idx]);
actual[idx] = 0;
}
}
@AfterClass
public static void shutDownClass() throws Exception {
MiniAvatarCluster.shutDownZooKeeper();
}
}