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HDFS-10682. Replace FsDatasetImpl object lock with a separate lock object. (Contributed by Chen Liang)

This commit is contained in:
Arpit Agarwal 2016-08-17 16:22:00 -07:00
parent bb6d866207
commit ad0ac6cced
10 changed files with 535 additions and 447 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
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@ -46,6 +46,7 @@ import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.ReadaheadPool.ReadaheadRequest;
import org.apache.hadoop.io.nativeio.NativeIO;
import org.apache.hadoop.net.SocketOutputStream;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.DataChecksum;
import org.apache.htrace.core.Sampler;
import org.apache.htrace.core.TraceScope;
@ -242,7 +243,7 @@ class BlockSender implements java.io.Closeable {
}
final long replicaVisibleLength;
synchronized(datanode.data) {
try(AutoCloseableLock lock = datanode.data.acquireDatasetLock()) {
replica = getReplica(block, datanode);
replicaVisibleLength = replica.getVisibleLength();
}

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -201,6 +201,7 @@ import org.apache.hadoop.tracing.TraceAdminProtocolPB;
import org.apache.hadoop.tracing.TraceAdminProtocolServerSideTranslatorPB;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.hadoop.tracing.TracerConfigurationManager;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.Daemon;
import org.apache.hadoop.util.DiskChecker;
import org.apache.hadoop.util.DiskChecker.DiskErrorException;
@ -2831,7 +2832,7 @@ public class DataNode extends ReconfigurableBase
final BlockConstructionStage stage;
//get replica information
synchronized(data) {
try(AutoCloseableLock lock = data.acquireDatasetLock()) {
Block storedBlock = data.getStoredBlock(b.getBlockPoolId(),
b.getBlockId());
if (null == storedBlock) {

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DirectoryScanner.java
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@ -44,12 +44,14 @@ import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.Daemon;
import org.apache.hadoop.util.StopWatch;
import org.apache.hadoop.util.Time;
@ -583,7 +585,7 @@ public class DirectoryScanner implements Runnable {
Map<String, ScanInfo[]> diskReport = getDiskReport();
// Hold FSDataset lock to prevent further changes to the block map
synchronized(dataset) {
try(AutoCloseableLock lock = dataset.acquireDatasetLock()) {
for (Entry<String, ScanInfo[]> entry : diskReport.entrySet()) {
String bpid = entry.getKey();
ScanInfo[] blockpoolReport = entry.getValue();

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/FsDatasetSpi.java
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@ -60,6 +60,7 @@ import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
import org.apache.hadoop.hdfs.server.protocol.StorageReport;
import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.ReflectionUtils;
/**
@ -641,4 +642,9 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
* Confirm whether the block is deleting
*/
boolean isDeletingBlock(String bpid, long blockId);
/**
* Acquire the lock of the dataset.
*/
AutoCloseableLock acquireDatasetLock();
}

930
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
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File diff suppressed because it is too large Load Diff

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java
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@ -56,6 +56,7 @@ import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.CloseableReferenceCount;
import org.apache.hadoop.util.DiskChecker.DiskErrorException;
import org.apache.hadoop.util.StringUtils;
@ -304,7 +305,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
private void decDfsUsedAndNumBlocks(String bpid, long value,
boolean blockFileDeleted) {
synchronized(dataset) {
try(AutoCloseableLock lock = dataset.acquireDatasetLock()) {
BlockPoolSlice bp = bpSlices.get(bpid);
if (bp != null) {
bp.decDfsUsed(value);
@ -316,7 +317,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
}
void incDfsUsedAndNumBlocks(String bpid, long value) {
synchronized (dataset) {
try(AutoCloseableLock lock = dataset.acquireDatasetLock()) {
BlockPoolSlice bp = bpSlices.get(bpid);
if (bp != null) {
bp.incDfsUsed(value);
@ -326,7 +327,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
}
void incDfsUsed(String bpid, long value) {
synchronized(dataset) {
try(AutoCloseableLock lock = dataset.acquireDatasetLock()) {
BlockPoolSlice bp = bpSlices.get(bpid);
if (bp != null) {
bp.incDfsUsed(value);
@ -337,7 +338,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
@VisibleForTesting
public long getDfsUsed() throws IOException {
long dfsUsed = 0;
synchronized(dataset) {
try(AutoCloseableLock lock = dataset.acquireDatasetLock()) {
for(BlockPoolSlice s : bpSlices.values()) {
dfsUsed += s.getDfsUsed();
}

9
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java
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@ -62,6 +62,7 @@ import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.metrics2.MetricsCollector;
import org.apache.hadoop.metrics2.util.MBeans;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.DataChecksum;
/**
@ -113,6 +114,8 @@ public class SimulatedFSDataset implements FsDatasetSpi<FsVolumeSpi> {
"dfs.datanode.simulateddatastorage.state";
private static final DatanodeStorage.State DEFAULT_STATE =
DatanodeStorage.State.NORMAL;
private final AutoCloseableLock datasetLock;
static final byte[] nullCrcFileData;
static {
@ -550,6 +553,7 @@ public class SimulatedFSDataset implements FsDatasetSpi<FsVolumeSpi> {
conf.getLong(CONFIG_PROPERTY_CAPACITY, DEFAULT_CAPACITY),
conf.getEnum(CONFIG_PROPERTY_STATE, DEFAULT_STATE));
this.volume = new SimulatedVolume(this.storage);
this.datasetLock = new AutoCloseableLock();
}
public synchronized void injectBlocks(String bpid,
@ -1365,5 +1369,10 @@ public class SimulatedFSDataset implements FsDatasetSpi<FsVolumeSpi> {
public boolean isDeletingBlock(String bpid, long blockId) {
throw new UnsupportedOperationException();
}
@Override
public AutoCloseableLock acquireDatasetLock() {
return datasetLock.acquire();
}
}

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockRecovery.java
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@ -85,6 +85,7 @@ import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
import org.apache.hadoop.hdfs.server.protocol.StorageReport;
import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.Time;
import org.apache.log4j.Level;
@ -693,7 +694,7 @@ public class TestBlockRecovery {
final RecoveringBlock recoveringBlock = new RecoveringBlock(
block.getBlock(), locations, block.getBlock()
.getGenerationStamp() + 1);
synchronized (dataNode.data) {
try(AutoCloseableLock lock = dataNode.data.acquireDatasetLock()) {
Thread.sleep(2000);
dataNode.initReplicaRecovery(recoveringBlock);
}

9
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java
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@ -63,6 +63,7 @@ import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetTestUtil;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.LazyPersistTestCase;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.Time;
import org.junit.Before;
import org.junit.Test;
@ -113,7 +114,7 @@ public class TestDirectoryScanner {
/** Truncate a block file */
private long truncateBlockFile() throws IOException {
synchronized (fds) {
try(AutoCloseableLock lock = fds.acquireDatasetLock()) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File f = b.getBlockFile();
File mf = b.getMetaFile();
@ -138,7 +139,7 @@ public class TestDirectoryScanner {
/** Delete a block file */
private long deleteBlockFile() {
synchronized(fds) {
try(AutoCloseableLock lock = fds.acquireDatasetLock()) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File f = b.getBlockFile();
File mf = b.getMetaFile();
@ -154,7 +155,7 @@ public class TestDirectoryScanner {
/** Delete block meta file */
private long deleteMetaFile() {
synchronized(fds) {
try(AutoCloseableLock lock = fds.acquireDatasetLock()) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File file = b.getMetaFile();
// Delete a metadata file
@ -173,7 +174,7 @@ public class TestDirectoryScanner {
* @throws IOException
*/
private void duplicateBlock(long blockId) throws IOException {
synchronized (fds) {
try(AutoCloseableLock lock = fds.acquireDatasetLock()) {
ReplicaInfo b = FsDatasetTestUtil.fetchReplicaInfo(fds, bpid, blockId);
try (FsDatasetSpi.FsVolumeReferences volumes =
fds.getFsVolumeReferences()) {

6
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalDatasetImpl.java
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@ -43,6 +43,7 @@ import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
import org.apache.hadoop.hdfs.server.protocol.StorageReport;
import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
import org.apache.hadoop.metrics2.MetricsCollector;
import org.apache.hadoop.util.AutoCloseableLock;
public class ExternalDatasetImpl implements FsDatasetSpi<ExternalVolumeImpl> {
@ -448,4 +449,9 @@ public class ExternalDatasetImpl implements FsDatasetSpi<ExternalVolumeImpl> {
public boolean isDeletingBlock(String bpid, long blockId) {
return false;
}
@Override
public AutoCloseableLock acquireDatasetLock() {
return null;
}
}