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HDFS-8086. Move LeaseRenewer to the hdfs.client.impl package. Contributed by Takanobu

This commit is contained in:
Tsz-Wo Nicholas Sze 2015-05-01 15:11:09 -07:00
parent 64d30a6186
commit d3d019c337
6 changed files with 91 additions and 71 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -494,6 +494,9 @@ Release 2.8.0 - UNRELEASED
HDFS-8292. Move conditional in fmt_time from dfs-dust.js to status.html.
(Charles Lamb via wang)
HDFS-8086. Move LeaseRenewer to the hdfs.client.impl package. (Takanobu
Asanuma via szetszwo)
OPTIMIZATIONS
HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than

13
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
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@ -101,6 +101,7 @@ import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.client.HdfsDataInputStream;
import org.apache.hadoop.hdfs.client.HdfsDataOutputStream;
import org.apache.hadoop.hdfs.client.impl.DfsClientConf;
import org.apache.hadoop.hdfs.client.impl.LeaseRenewer;
import org.apache.hadoop.hdfs.net.Peer;
import org.apache.hadoop.hdfs.net.TcpPeerServer;
import org.apache.hadoop.hdfs.protocol.AclException;
@ -481,7 +482,7 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
* enforced to consistently update its local dfsclients array and
* client's filesBeingWritten map.
*/
void putFileBeingWritten(final long inodeId, final DFSOutputStream out) {
public void putFileBeingWritten(final long inodeId, final DFSOutputStream out) {
synchronized(filesBeingWritten) {
filesBeingWritten.put(inodeId, out);
// update the last lease renewal time only when there was no
@ -494,7 +495,7 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
}
/** Remove a file. Only called from LeaseRenewer. */
void removeFileBeingWritten(final long inodeId) {
public void removeFileBeingWritten(final long inodeId) {
synchronized(filesBeingWritten) {
filesBeingWritten.remove(inodeId);
if (filesBeingWritten.isEmpty()) {
@ -504,14 +505,14 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
}
/** Is file-being-written map empty? */
boolean isFilesBeingWrittenEmpty() {
public boolean isFilesBeingWrittenEmpty() {
synchronized(filesBeingWritten) {
return filesBeingWritten.isEmpty();
}
}
/** @return true if the client is running */
boolean isClientRunning() {
public boolean isClientRunning() {
return clientRunning;
}
@ -533,7 +534,7 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
* @return true if lease was renewed. May return false if this
* client has been closed or has no files open.
**/
boolean renewLease() throws IOException {
public boolean renewLease() throws IOException {
if (clientRunning && !isFilesBeingWrittenEmpty()) {
try {
namenode.renewLease(clientName);
@ -565,7 +566,7 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
}
/** Abort and release resources held. Ignore all errors. */
void abort() {
public void abort() {
clientRunning = false;
closeAllFilesBeingWritten(true);
try {

46
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/LeaseRenewer.java → hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/client/impl/LeaseRenewer.java
View File

@ -15,7 +15,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs;
package org.apache.hadoop.hdfs.client.impl;
import java.io.IOException;
import java.net.SocketTimeoutException;
@ -31,6 +31,8 @@ import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.HadoopIllegalArgumentException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.DFSClient;
import org.apache.hadoop.hdfs.DFSOutputStream;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.Daemon;
@ -40,7 +42,7 @@ import com.google.common.annotations.VisibleForTesting;
/**
* <p>
* Used by {@link DFSClient} for renewing file-being-written leases
* Used by {@link org.apache.hadoop.hdfs.DFSClient} for renewing file-being-written leases
* on the namenode.
* When a file is opened for write (create or append),
* namenode stores a file lease for recording the identity of the writer.
@ -53,12 +55,12 @@ import com.google.common.annotations.VisibleForTesting;
* This class also provides the following functionality:
* <ul>
* <li>
* It maintains a map from (namenode, user) pairs to lease renewers.
* It maintains a map from (namenode, user) pairs to lease renewers.
* The same {@link LeaseRenewer} instance is used for renewing lease
* for all the {@link DFSClient} to the same namenode and the same user.
* for all the {@link org.apache.hadoop.hdfs.DFSClient} to the same namenode and the same user.
* </li>
* <li>
* Each renewer maintains a list of {@link DFSClient}.
* Each renewer maintains a list of {@link org.apache.hadoop.hdfs.DFSClient}.
* Periodically the leases for all the clients are renewed.
* A client is removed from the list when the client is closed.
* </li>
@ -70,21 +72,21 @@ import com.google.common.annotations.VisibleForTesting;
* </p>
*/
@InterfaceAudience.Private
class LeaseRenewer {
public class LeaseRenewer {
static final Log LOG = LogFactory.getLog(LeaseRenewer.class);
static final long LEASE_RENEWER_GRACE_DEFAULT = 60*1000L;
static final long LEASE_RENEWER_SLEEP_DEFAULT = 1000L;
/** Get a {@link LeaseRenewer} instance */
static LeaseRenewer getInstance(final String authority,
public static LeaseRenewer getInstance(final String authority,
final UserGroupInformation ugi, final DFSClient dfsc) throws IOException {
final LeaseRenewer r = Factory.INSTANCE.get(authority, ugi);
r.addClient(dfsc);
return r;
}
/**
/**
* A factory for sharing {@link LeaseRenewer} objects
* among {@link DFSClient} instances
* so that there is only one renewer per authority per user.
@ -124,7 +126,7 @@ class LeaseRenewer {
return this.authority.equals(that.authority)
&& this.ugi.equals(that.ugi);
}
return false;
return false;
}
@Override
@ -170,17 +172,17 @@ class LeaseRenewer {
/** Only the daemon with currentId should run. */
private int currentId = 0;
/**
/**
* A period in milliseconds that the lease renewer thread should run
* after the map became empty.
* In other words,
* if the map is empty for a time period longer than the grace period,
* the renewer should terminate.
* the renewer should terminate.
*/
private long gracePeriod;
/**
* The time period in milliseconds
* that the renewer sleeps for each iteration.
* that the renewer sleeps for each iteration.
*/
private long sleepPeriod;
@ -199,7 +201,7 @@ class LeaseRenewer {
private LeaseRenewer(Factory.Key factorykey) {
this.factorykey = factorykey;
unsyncSetGraceSleepPeriod(LEASE_RENEWER_GRACE_DEFAULT);
if (LOG.isTraceEnabled()) {
instantiationTrace = StringUtils.stringifyException(
new Throwable("TRACE"));
@ -244,7 +246,7 @@ class LeaseRenewer {
}
private synchronized long getSleepPeriod() {
return sleepPeriod;
return sleepPeriod;
}
/** Set the grace period and adjust the sleep period accordingly. */
@ -272,19 +274,19 @@ class LeaseRenewer {
public boolean isEmpty() {
return dfsclients.isEmpty();
}
/** Used only by tests */
synchronized String getDaemonName() {
return daemon.getName();
}
/** Is the empty period longer than the grace period? */
/** Is the empty period longer than the grace period? */
private synchronized boolean isRenewerExpired() {
return emptyTime != Long.MAX_VALUE
&& Time.monotonicNow() - emptyTime > gracePeriod;
}
synchronized void put(final long inodeId, final DFSOutputStream out,
public synchronized void put(final long inodeId, final DFSOutputStream out,
final DFSClient dfsc) {
if (dfsc.isClientRunning()) {
if (!isRunning() || isRenewerExpired()) {
@ -314,7 +316,7 @@ class LeaseRenewer {
}
}
}
@Override
public String toString() {
return String.valueOf(LeaseRenewer.this);
@ -333,7 +335,7 @@ class LeaseRenewer {
}
/** Close a file. */
void closeFile(final long inodeId, final DFSClient dfsc) {
public void closeFile(final long inodeId, final DFSClient dfsc) {
dfsc.removeFileBeingWritten(inodeId);
synchronized(this) {
@ -355,7 +357,7 @@ class LeaseRenewer {
}
/** Close the given client. */
synchronized void closeClient(final DFSClient dfsc) {
public synchronized void closeClient(final DFSClient dfsc) {
dfsclients.remove(dfsc);
if (dfsclients.isEmpty()) {
if (!isRunning() || isRenewerExpired()) {
@ -381,7 +383,7 @@ class LeaseRenewer {
}
}
void interruptAndJoin() throws InterruptedException {
public void interruptAndJoin() throws InterruptedException {
Daemon daemonCopy = null;
synchronized (this) {
if (isRunning()) {
@ -389,7 +391,7 @@ class LeaseRenewer {
daemonCopy = daemon;
}
}
if (daemonCopy != null) {
if(LOG.isDebugEnabled()) {
LOG.debug("Wait for lease checker to terminate");

59
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDistributedFileSystem.java
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@ -31,6 +31,7 @@ import static org.mockito.Mockito.mock;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.SocketTimeoutException;
@ -64,6 +65,7 @@ import org.apache.hadoop.fs.RemoteIterator;
import org.apache.hadoop.fs.VolumeId;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.MiniDFSCluster.DataNodeProperties;
import org.apache.hadoop.hdfs.client.impl.LeaseRenewer;
import org.apache.hadoop.hdfs.net.Peer;
import org.apache.hadoop.hdfs.server.datanode.DataNodeFaultInjector;
import org.apache.hadoop.hdfs.server.namenode.ha.HATestUtil;
@ -264,78 +266,84 @@ public class TestDistributedFileSystem {
{
final DistributedFileSystem dfs = cluster.getFileSystem();
dfs.dfs.getLeaseRenewer().setGraceSleepPeriod(grace);
assertFalse(dfs.dfs.getLeaseRenewer().isRunning());
Method setMethod = dfs.dfs.getLeaseRenewer().getClass()
.getDeclaredMethod("setGraceSleepPeriod", long.class);
setMethod.setAccessible(true);
setMethod.invoke(dfs.dfs.getLeaseRenewer(), grace);
Method checkMethod = dfs.dfs.getLeaseRenewer().getClass()
.getDeclaredMethod("isRunning");
checkMethod.setAccessible(true);
assertFalse((boolean) checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
{
//create a file
final FSDataOutputStream out = dfs.create(filepaths[0]);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//write something
out.writeLong(millis);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//close
out.close();
Thread.sleep(grace/4*3);
//within grace period
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
for(int i = 0; i < 3; i++) {
if (dfs.dfs.getLeaseRenewer().isRunning()) {
if ((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer())) {
Thread.sleep(grace/2);
}
}
//passed grace period
assertFalse(dfs.dfs.getLeaseRenewer().isRunning());
assertFalse((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
}
{
//create file1
final FSDataOutputStream out1 = dfs.create(filepaths[1]);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//create file2
final FSDataOutputStream out2 = dfs.create(filepaths[2]);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//write something to file1
out1.writeLong(millis);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//close file1
out1.close();
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//write something to file2
out2.writeLong(millis);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//close file2
out2.close();
Thread.sleep(grace/4*3);
//within grace period
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
}
{
//create file3
final FSDataOutputStream out3 = dfs.create(filepaths[3]);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
Thread.sleep(grace/4*3);
//passed previous grace period, should still running
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//write something to file3
out3.writeLong(millis);
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//close file3
out3.close();
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
Thread.sleep(grace/4*3);
//within grace period
assertTrue(dfs.dfs.getLeaseRenewer().isRunning());
assertTrue((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
for(int i = 0; i < 3; i++) {
if (dfs.dfs.getLeaseRenewer().isRunning()) {
if ((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer())) {
Thread.sleep(grace/2);
}
}
//passed grace period
assertFalse(dfs.dfs.getLeaseRenewer().isRunning());
assertFalse((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
}
dfs.close();
@ -364,15 +372,18 @@ public class TestDistributedFileSystem {
{
final DistributedFileSystem dfs = cluster.getFileSystem();
assertFalse(dfs.dfs.getLeaseRenewer().isRunning());
Method checkMethod = dfs.dfs.getLeaseRenewer().getClass()
.getDeclaredMethod("isRunning");
checkMethod.setAccessible(true);
assertFalse((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
//open and check the file
FSDataInputStream in = dfs.open(filepaths[0]);
assertFalse(dfs.dfs.getLeaseRenewer().isRunning());
assertFalse((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
assertEquals(millis, in.readLong());
assertFalse(dfs.dfs.getLeaseRenewer().isRunning());
assertFalse((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
in.close();
assertFalse(dfs.dfs.getLeaseRenewer().isRunning());
assertFalse((boolean)checkMethod.invoke(dfs.dfs.getLeaseRenewer()));
dfs.close();
}

1
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLease.java
View File

@ -45,6 +45,7 @@ import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Options;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.client.impl.LeaseRenewer;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;

40
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLeaseRenewer.java → hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/client/impl/TestLeaseRenewer.java
View File

@ -15,13 +15,15 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs;
package org.apache.hadoop.hdfs.client.impl;
import static org.junit.Assert.assertSame;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.hadoop.hdfs.DFSClient;
import org.apache.hadoop.hdfs.DFSOutputStream;
import org.apache.hadoop.hdfs.client.impl.DfsClientConf;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.test.GenericTestUtils;
@ -46,19 +48,19 @@ public class TestLeaseRenewer {
private DFSClient MOCK_DFSCLIENT;
private LeaseRenewer renewer;
/** Cause renewals often so test runs quickly. */
private static final long FAST_GRACE_PERIOD = 100L;
@Before
public void setupMocksAndRenewer() throws IOException {
MOCK_DFSCLIENT = createMockClient();
renewer = LeaseRenewer.getInstance(
FAKE_AUTHORITY, FAKE_UGI_A, MOCK_DFSCLIENT);
renewer.setGraceSleepPeriod(FAST_GRACE_PERIOD);
}
private DFSClient createMockClient() {
final DfsClientConf mockConf = Mockito.mock(DfsClientConf.class);
Mockito.doReturn((int)FAST_GRACE_PERIOD).when(mockConf).getHdfsTimeout();
@ -79,12 +81,12 @@ public class TestLeaseRenewer {
LeaseRenewer lr2 = LeaseRenewer.getInstance(
FAKE_AUTHORITY, FAKE_UGI_A, MOCK_DFSCLIENT);
Assert.assertSame(lr, lr2);
// But a different UGI should return a different instance
LeaseRenewer lr3 = LeaseRenewer.getInstance(
FAKE_AUTHORITY, FAKE_UGI_B, MOCK_DFSCLIENT);
Assert.assertNotSame(lr, lr3);
// A different authority with same UGI should also be a different
// instance.
LeaseRenewer lr4 = LeaseRenewer.getInstance(
@ -92,7 +94,7 @@ public class TestLeaseRenewer {
Assert.assertNotSame(lr, lr4);
Assert.assertNotSame(lr3, lr4);
}
@Test
public void testRenewal() throws Exception {
// Keep track of how many times the lease gets renewed
@ -105,7 +107,7 @@ public class TestLeaseRenewer {
}
}).when(MOCK_DFSCLIENT).renewLease();
// Set up a file so that we start renewing our lease.
DFSOutputStream mockStream = Mockito.mock(DFSOutputStream.class);
long fileId = 123L;
@ -123,7 +125,7 @@ public class TestLeaseRenewer {
renewer.closeFile(fileId, MOCK_DFSCLIENT);
}
/**
* Regression test for HDFS-2810. In this bug, the LeaseRenewer has handles
* to several DFSClients with the same name, the first of which has no files
@ -136,7 +138,7 @@ public class TestLeaseRenewer {
Mockito.doReturn(false).when(mockClient1).renewLease();
assertSame(renewer, LeaseRenewer.getInstance(
FAKE_AUTHORITY, FAKE_UGI_A, mockClient1));
// Set up a file so that we start renewing our lease.
DFSOutputStream mockStream1 = Mockito.mock(DFSOutputStream.class);
long fileId = 456L;
@ -152,7 +154,7 @@ public class TestLeaseRenewer {
DFSOutputStream mockStream2 = Mockito.mock(DFSOutputStream.class);
renewer.put(fileId, mockStream2, mockClient2);
// Wait for lease to get renewed
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
@ -174,28 +176,28 @@ public class TestLeaseRenewer {
renewer.closeFile(fileId, mockClient1);
renewer.closeFile(fileId, mockClient2);
}
@Test
public void testThreadName() throws Exception {
DFSOutputStream mockStream = Mockito.mock(DFSOutputStream.class);
long fileId = 789L;
Assert.assertFalse("Renewer not initially running",
renewer.isRunning());
// Pretend to open a file
renewer.put(fileId, mockStream, MOCK_DFSCLIENT);
Assert.assertTrue("Renewer should have started running",
renewer.isRunning());
// Check the thread name is reasonable
String threadName = renewer.getDaemonName();
Assert.assertEquals("LeaseRenewer:myuser@hdfs://nn1/", threadName);
// Pretend to close the file
renewer.closeFile(fileId, MOCK_DFSCLIENT);
renewer.setEmptyTime(Time.monotonicNow());
// Should stop the renewer running within a few seconds
long failTime = Time.monotonicNow() + 5000;
while (renewer.isRunning() && Time.monotonicNow() < failTime) {
@ -203,5 +205,5 @@ public class TestLeaseRenewer {
}
Assert.assertFalse(renewer.isRunning());
}
}