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svn merge -c 1308437 from trunk for HDFS-3130. Move fsdataset implementation to a package. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1308439 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze 2012-04-02 17:43:31 +00:00
parent 8033cb5881
commit 761f77f0eb
37 changed files with 1821 additions and 1572 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -194,6 +194,8 @@ Release 2.0.0 - UNRELEASED
HDFS-3144. Refactor DatanodeID#getName by use. (eli)
HDFS-3130. Move fsdataset implementation to a package. (szetszwo)
OPTIMIZATIONS
HDFS-2477. Optimize computing the diff between a block report and the

2
hadoop-hdfs-project/hadoop-hdfs/dev-support/findbugsExcludeFile.xml
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@ -215,7 +215,7 @@
the OBL warning.
-->
<Match>
<Class name="org.apache.hadoop.hdfs.server.datanode.FSDataset" />
<Class name="org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl" />
<Method name="getTmpInputStreams" />
<Bug pattern="OBL_UNSATISFIED_OBLIGATION" />
</Match>

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockMetadataHeader.java
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@ -86,7 +86,7 @@ public class BlockMetadataHeader {
* @return
* @throws IOException
*/
static BlockMetadataHeader readHeader(File file) throws IOException {
public static BlockMetadataHeader readHeader(File file) throws IOException {
DataInputStream in = null;
try {
in = new DataInputStream(new BufferedInputStream(
@ -144,7 +144,7 @@ public class BlockMetadataHeader {
/**
* Returns the size of the header
*/
static int getHeaderSize() {
public static int getHeaderSize() {
return Short.SIZE/Byte.SIZE + DataChecksum.getChecksumHeaderSize();
}
}

15
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -545,8 +545,8 @@ public class DataNode extends Configured
}
}
// calls specific to BP
protected void notifyNamenodeDeletedBlock(ExtendedBlock block) {
/** Notify the corresponding namenode to delete the block. */
public void notifyNamenodeDeletedBlock(ExtendedBlock block) {
BPOfferService bpos = blockPoolManager.get(block.getBlockPoolId());
if (bpos != null) {
bpos.notifyNamenodeDeletedBlock(block);
@ -1139,9 +1139,8 @@ public class DataNode extends Configured
/**
* Check if there is a disk failure and if so, handle the error
*
**/
protected void checkDiskError( ) {
*/
public void checkDiskError() {
try {
data.checkDataDir();
} catch (DiskErrorException de) {
@ -1696,6 +1695,12 @@ public class DataNode extends Configured
return data;
}
/** @return the block scanner. */
public DataBlockScanner getBlockScanner() {
return blockScanner;
}
public static void secureMain(String args[], SecureResources resources) {
try {
StringUtils.startupShutdownMessage(DataNode.class, args, LOG);

19
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataStorage.java
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@ -30,28 +30,25 @@ import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.fs.HardLink;
import org.apache.hadoop.fs.LocalFileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.HardLink;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.LayoutVersion;
import org.apache.hadoop.hdfs.protocol.LayoutVersion.Feature;
import org.apache.hadoop.hdfs.server.common.GenerationStamp;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NodeType;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption;
import org.apache.hadoop.hdfs.server.common.InconsistentFSStateException;
import org.apache.hadoop.hdfs.server.common.Storage;
import org.apache.hadoop.hdfs.server.common.StorageInfo;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NodeType;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption;
import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.Daemon;
@ -65,7 +62,7 @@ import org.apache.hadoop.util.DiskChecker;
@InterfaceAudience.Private
public class DataStorage extends Storage {
// Constants
final static String BLOCK_SUBDIR_PREFIX = "subdir";
public final static String BLOCK_SUBDIR_PREFIX = "subdir";
final static String BLOCK_FILE_PREFIX = "blk_";
final static String COPY_FILE_PREFIX = "dncp_";
final static String STORAGE_DIR_DETACHED = "detach";
@ -98,7 +95,8 @@ public class DataStorage extends Storage {
this.storageID = strgID;
}
synchronized String getStorageID() {
/** @return storage ID. */
public synchronized String getStorageID() {
return storageID;
}
@ -106,7 +104,8 @@ public class DataStorage extends Storage {
this.storageID = newStorageID;
}
synchronized void createStorageID(int datanodePort) {
/** Create an ID for this storage. */
public synchronized void createStorageID(int datanodePort) {
if (storageID != null && !storageID.isEmpty()) {
return;
}

57
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DatanodeUtil.java
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@ -18,21 +18,17 @@
package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.Arrays;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.protocol.Block;
/** Provide utility methods for Datanode. */
@InterfaceAudience.Private
class DatanodeUtil {
static final String METADATA_EXTENSION = ".meta";
public class DatanodeUtil {
public static final String UNLINK_BLOCK_SUFFIX = ".unlinked";
static final String UNLINK_BLOCK_SUFFIX = ".unlinked";
private static final String DISK_ERROR = "Possible disk error: ";
public static final String DISK_ERROR = "Possible disk error: ";
/** Get the cause of an I/O exception if caused by a possible disk error
* @param ioe an I/O exception
@ -52,55 +48,34 @@ class DatanodeUtil {
* @throws IOException
* if the file already exists or if the file cannot be created.
*/
static File createTmpFile(Block b, File f) throws IOException {
public static File createTmpFile(Block b, File f) throws IOException {
if (f.exists()) {
throw new IOException("Unexpected problem in creating temporary file for "
+ b + ". File " + f + " should not be present, but is.");
throw new IOException("Failed to create temporary file for " + b
+ ". File " + f + " should not be present, but is.");
}
// Create the zero-length temp file
final boolean fileCreated;
try {
fileCreated = f.createNewFile();
} catch (IOException ioe) {
throw (IOException)new IOException(DISK_ERROR + f).initCause(ioe);
throw new IOException(DISK_ERROR + "Failed to create " + f, ioe);
}
if (!fileCreated) {
throw new IOException("Unexpected problem in creating temporary file for "
+ b + ". File " + f + " should be creatable, but is already present.");
throw new IOException("Failed to create temporary file for " + b
+ ". File " + f + " should be creatable, but is already present.");
}
return f;
}
static String getMetaFileName(String blockFileName, long genStamp) {
return blockFileName + "_" + genStamp + METADATA_EXTENSION;
/**
* @return the meta name given the block name and generation stamp.
*/
public static String getMetaName(String blockName, long generationStamp) {
return blockName + "_" + generationStamp + Block.METADATA_EXTENSION;
}
static File getMetaFile(File f, long genStamp) {
return new File(getMetaFileName(f.getAbsolutePath(), genStamp));
}
/** Find the corresponding meta data file from a given block file */
static File findMetaFile(final File blockFile) throws IOException {
final String prefix = blockFile.getName() + "_";
final File parent = blockFile.getParentFile();
File[] matches = parent.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return dir.equals(parent)
&& name.startsWith(prefix) && name.endsWith(METADATA_EXTENSION);
}
});
if (matches == null || matches.length == 0) {
throw new IOException("Meta file not found, blockFile=" + blockFile);
}
else if (matches.length > 1) {
throw new IOException("Found more than one meta files: "
+ Arrays.asList(matches));
}
return matches[0];
}
static File getUnlinkTmpFile(File f) {
/** @return the unlink file. */
public static File getUnlinkTmpFile(File f) {
return new File(f.getParentFile(), f.getName()+UNLINK_BLOCK_SUFFIX);
}
}

14
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FinalizedReplica.java
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@ -26,7 +26,7 @@ import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
/**
* This class describes a replica that has been finalized.
*/
class FinalizedReplica extends ReplicaInfo {
public class FinalizedReplica extends ReplicaInfo {
private boolean unlinked; // copy-on-write done for block
/**
@ -37,7 +37,7 @@ class FinalizedReplica extends ReplicaInfo {
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
FinalizedReplica(long blockId, long len, long genStamp,
public FinalizedReplica(long blockId, long len, long genStamp,
FsVolumeSpi vol, File dir) {
super(blockId, len, genStamp, vol, dir);
}
@ -48,7 +48,7 @@ class FinalizedReplica extends ReplicaInfo {
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
FinalizedReplica(Block block, FsVolumeSpi vol, File dir) {
public FinalizedReplica(Block block, FsVolumeSpi vol, File dir) {
super(block, vol, dir);
}
@ -56,7 +56,7 @@ class FinalizedReplica extends ReplicaInfo {
* Copy constructor.
* @param from
*/
FinalizedReplica(FinalizedReplica from) {
public FinalizedReplica(FinalizedReplica from) {
super(from);
this.unlinked = from.isUnlinked();
}
@ -67,12 +67,12 @@ class FinalizedReplica extends ReplicaInfo {
}
@Override // ReplicaInfo
boolean isUnlinked() {
public boolean isUnlinked() {
return unlinked;
}
@Override // ReplicaInfo
void setUnlinked() {
public void setUnlinked() {
unlinked = true;
}
@ -99,6 +99,6 @@ class FinalizedReplica extends ReplicaInfo {
@Override
public String toString() {
return super.toString()
+ "\n unlinked=" + unlinked;
+ "\n unlinked =" + unlinked;
}
}

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaAlreadyExistsException.java
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@ -25,7 +25,7 @@ import java.io.IOException;
* Exception indicating that the target block already exists
* and is not set to be recovered/overwritten.
*/
class ReplicaAlreadyExistsException extends IOException {
public class ReplicaAlreadyExistsException extends IOException {
private static final long serialVersionUID = 1L;
public ReplicaAlreadyExistsException() {

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaBeingWritten.java
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@ -27,7 +27,7 @@ import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
* Those are the replicas that
* are created in a pipeline initiated by a dfs client.
*/
class ReplicaBeingWritten extends ReplicaInPipeline {
public class ReplicaBeingWritten extends ReplicaInPipeline {
/**
* Constructor for a zero length replica
* @param blockId block id
@ -35,7 +35,7 @@ class ReplicaBeingWritten extends ReplicaInPipeline {
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
ReplicaBeingWritten(long blockId, long genStamp,
public ReplicaBeingWritten(long blockId, long genStamp,
FsVolumeSpi vol, File dir) {
super( blockId, genStamp, vol, dir);
}
@ -47,7 +47,7 @@ class ReplicaBeingWritten extends ReplicaInPipeline {
* @param dir directory path where block and meta files are located
* @param writer a thread that is writing to this replica
*/
ReplicaBeingWritten(Block block,
public ReplicaBeingWritten(Block block,
FsVolumeSpi vol, File dir, Thread writer) {
super( block, vol, dir, writer);
}
@ -61,7 +61,7 @@ class ReplicaBeingWritten extends ReplicaInPipeline {
* @param dir directory path where block and meta files are located
* @param writer a thread that is writing to this replica
*/
ReplicaBeingWritten(long blockId, long len, long genStamp,
public ReplicaBeingWritten(long blockId, long len, long genStamp,
FsVolumeSpi vol, File dir, Thread writer ) {
super( blockId, len, genStamp, vol, dir, writer);
}
@ -70,7 +70,7 @@ class ReplicaBeingWritten extends ReplicaInPipeline {
* Copy constructor.
* @param from
*/
ReplicaBeingWritten(ReplicaBeingWritten from) {
public ReplicaBeingWritten(ReplicaBeingWritten from) {
super(from);
}

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInPipeline.java
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@ -37,7 +37,7 @@ import org.apache.hadoop.util.DataChecksum;
*
* The base class implements a temporary replica
*/
class ReplicaInPipeline extends ReplicaInfo
public class ReplicaInPipeline extends ReplicaInfo
implements ReplicaInPipelineInterface {
private long bytesAcked;
private long bytesOnDisk;
@ -50,9 +50,8 @@ class ReplicaInPipeline extends ReplicaInfo
* @param genStamp replica generation stamp
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param state replica state
*/
ReplicaInPipeline(long blockId, long genStamp,
public ReplicaInPipeline(long blockId, long genStamp,
FsVolumeSpi vol, File dir) {
this( blockId, 0L, genStamp, vol, dir, Thread.currentThread());
}
@ -91,7 +90,7 @@ class ReplicaInPipeline extends ReplicaInfo
* Copy constructor.
* @param from
*/
ReplicaInPipeline(ReplicaInPipeline from) {
public ReplicaInPipeline(ReplicaInPipeline from) {
super(from);
this.bytesAcked = from.getBytesAcked();
this.bytesOnDisk = from.getBytesOnDisk();
@ -151,7 +150,7 @@ class ReplicaInPipeline extends ReplicaInfo
* Interrupt the writing thread and wait until it dies
* @throws IOException the waiting is interrupted
*/
void stopWriter() throws IOException {
public void stopWriter() throws IOException {
if (writer != null && writer != Thread.currentThread() && writer.isAlive()) {
writer.interrupt();
try {

25
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInfo.java
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@ -85,19 +85,11 @@ abstract public class ReplicaInfo extends Block implements Replica {
this(from, from.getVolume(), from.getDir());
}
/**
* Get this replica's meta file name
* @return this replica's meta file name
*/
private String getMetaFileName() {
return getBlockName() + "_" + getGenerationStamp() + METADATA_EXTENSION;
}
/**
* Get the full path of this replica's data file
* @return the full path of this replica's data file
*/
File getBlockFile() {
public File getBlockFile() {
return new File(getDir(), getBlockName());
}
@ -105,15 +97,16 @@ abstract public class ReplicaInfo extends Block implements Replica {
* Get the full path of this replica's meta file
* @return the full path of this replica's meta file
*/
File getMetaFile() {
return new File(getDir(), getMetaFileName());
public File getMetaFile() {
return new File(getDir(),
DatanodeUtil.getMetaName(getBlockName(), getGenerationStamp()));
}
/**
* Get the volume where this replica is located on disk
* @return the volume where this replica is located on disk
*/
FsVolumeSpi getVolume() {
public FsVolumeSpi getVolume() {
return volume;
}
@ -136,7 +129,7 @@ abstract public class ReplicaInfo extends Block implements Replica {
* Set the parent directory where this replica is located
* @param dir the parent directory where the replica is located
*/
void setDir(File dir) {
public void setDir(File dir) {
this.dir = dir;
}
@ -145,14 +138,14 @@ abstract public class ReplicaInfo extends Block implements Replica {
* @return true if the replica has already been unlinked
* or no need to be detached; false otherwise
*/
boolean isUnlinked() {
public boolean isUnlinked() {
return true; // no need to be unlinked
}
/**
* set that this replica is unlinked
*/
void setUnlinked() {
public void setUnlinked() {
// no need to be unlinked
}
@ -201,7 +194,7 @@ abstract public class ReplicaInfo extends Block implements Replica {
* false if it is already detached or no need to be detached
* @throws IOException if there is any copy error
*/
boolean unlinkBlock(int numLinks) throws IOException {
public boolean unlinkBlock(int numLinks) throws IOException {
if (isUnlinked()) {
return false;
}

12
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaNotFoundException.java
View File

@ -29,21 +29,21 @@ import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
*/
public class ReplicaNotFoundException extends IOException {
private static final long serialVersionUID = 1L;
final static String NON_RBW_REPLICA = "Cannot recover a non-RBW replica ";
final static String UNFINALIZED_REPLICA =
public final static String NON_RBW_REPLICA = "Cannot recover a non-RBW replica ";
public final static String UNFINALIZED_REPLICA =
"Cannot append to an unfinalized replica ";
final static String UNFINALIZED_AND_NONRBW_REPLICA =
public final static String UNFINALIZED_AND_NONRBW_REPLICA =
"Cannot recover append/close to a replica that's not FINALIZED and not RBW ";
final static String NON_EXISTENT_REPLICA =
public final static String NON_EXISTENT_REPLICA =
"Cannot append to a non-existent replica ";
final static String UNEXPECTED_GS_REPLICA =
public final static String UNEXPECTED_GS_REPLICA =
"Cannot append to a replica with unexpeted generation stamp ";
public ReplicaNotFoundException() {
super();
}
ReplicaNotFoundException(ExtendedBlock b) {
public ReplicaNotFoundException(ExtendedBlock b) {
super("Replica not found for " + b);
}

20
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaUnderRecovery.java
View File

@ -31,12 +31,12 @@ import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
* A recovery with higher recovery id preempts recoveries with a lower id.
*
*/
class ReplicaUnderRecovery extends ReplicaInfo {
public class ReplicaUnderRecovery extends ReplicaInfo {
private ReplicaInfo original; // the original replica that needs to be recovered
private long recoveryId; // recovery id; it is also the generation stamp
// that the replica will be bumped to after recovery
ReplicaUnderRecovery(ReplicaInfo replica, long recoveryId) {
public ReplicaUnderRecovery(ReplicaInfo replica, long recoveryId) {
super(replica.getBlockId(), replica.getNumBytes(), replica.getGenerationStamp(),
replica.getVolume(), replica.getDir());
if ( replica.getState() != ReplicaState.FINALIZED &&
@ -52,7 +52,7 @@ class ReplicaUnderRecovery extends ReplicaInfo {
* Copy constructor.
* @param from
*/
ReplicaUnderRecovery(ReplicaUnderRecovery from) {
public ReplicaUnderRecovery(ReplicaUnderRecovery from) {
super(from);
this.original = from.getOriginalReplica();
this.recoveryId = from.getRecoveryID();
@ -62,7 +62,7 @@ class ReplicaUnderRecovery extends ReplicaInfo {
* Get the recovery id
* @return the generation stamp that the replica will be bumped to
*/
long getRecoveryID() {
public long getRecoveryID() {
return recoveryId;
}
@ -70,7 +70,7 @@ class ReplicaUnderRecovery extends ReplicaInfo {
* Set the recovery id
* @param recoveryId the new recoveryId
*/
void setRecoveryID(long recoveryId) {
public void setRecoveryID(long recoveryId) {
if (recoveryId > this.recoveryId) {
this.recoveryId = recoveryId;
} else {
@ -83,17 +83,17 @@ class ReplicaUnderRecovery extends ReplicaInfo {
* Get the original replica that's under recovery
* @return the original replica under recovery
*/
ReplicaInfo getOriginalReplica() {
public ReplicaInfo getOriginalReplica() {
return original;
}
@Override //ReplicaInfo
boolean isUnlinked() {
public boolean isUnlinked() {
return original.isUnlinked();
}
@Override //ReplicaInfo
void setUnlinked() {
public void setUnlinked() {
original.setUnlinked();
}
@ -131,7 +131,7 @@ class ReplicaUnderRecovery extends ReplicaInfo {
}
@Override //ReplicaInfo
void setDir(File dir) {
public void setDir(File dir) {
super.setDir(dir);
original.setDir(dir);
}
@ -159,7 +159,7 @@ class ReplicaUnderRecovery extends ReplicaInfo {
+ "\n original=" + original;
}
ReplicaRecoveryInfo createInfo() {
public ReplicaRecoveryInfo createInfo() {
return new ReplicaRecoveryInfo(original.getBlockId(),
original.getBytesOnDisk(), original.getGenerationStamp(),
original.getState());

12
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaWaitingToBeRecovered.java
View File

@ -32,7 +32,7 @@ import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
* client continues to write or be recovered as a result of
* lease recovery.
*/
class ReplicaWaitingToBeRecovered extends ReplicaInfo {
public class ReplicaWaitingToBeRecovered extends ReplicaInfo {
private boolean unlinked; // copy-on-write done for block
/**
@ -43,7 +43,7 @@ class ReplicaWaitingToBeRecovered extends ReplicaInfo {
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
ReplicaWaitingToBeRecovered(long blockId, long len, long genStamp,
public ReplicaWaitingToBeRecovered(long blockId, long len, long genStamp,
FsVolumeSpi vol, File dir) {
super(blockId, len, genStamp, vol, dir);
}
@ -54,7 +54,7 @@ class ReplicaWaitingToBeRecovered extends ReplicaInfo {
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
ReplicaWaitingToBeRecovered(Block block, FsVolumeSpi vol, File dir) {
public ReplicaWaitingToBeRecovered(Block block, FsVolumeSpi vol, File dir) {
super(block, vol, dir);
}
@ -62,7 +62,7 @@ class ReplicaWaitingToBeRecovered extends ReplicaInfo {
* Copy constructor.
* @param from
*/
ReplicaWaitingToBeRecovered(ReplicaWaitingToBeRecovered from) {
public ReplicaWaitingToBeRecovered(ReplicaWaitingToBeRecovered from) {
super(from);
this.unlinked = from.isUnlinked();
}
@ -73,12 +73,12 @@ class ReplicaWaitingToBeRecovered extends ReplicaInfo {
}
@Override //ReplicaInfo
boolean isUnlinked() {
public boolean isUnlinked() {
return unlinked;
}
@Override //ReplicaInfo
void setUnlinked() {
public void setUnlinked() {
unlinked = true;
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/FsDatasetSpi.java
View File

@ -33,9 +33,9 @@ import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.FSDataset;
import org.apache.hadoop.hdfs.server.datanode.Replica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipelineInterface;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetFactory;
import org.apache.hadoop.hdfs.server.datanode.metrics.FSDatasetMBean;
import org.apache.hadoop.hdfs.server.protocol.BlockRecoveryCommand.RecoveringBlock;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
@ -58,7 +58,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
@SuppressWarnings("rawtypes")
final Class<? extends Factory> clazz = conf.getClass(
DFSConfigKeys.DFS_DATANODE_FSDATASET_FACTORY_KEY,
FSDataset.Factory.class,
FsDatasetFactory.class,
Factory.class);
return ReflectionUtils.newInstance(clazz, conf);
}

286
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/BlockPoolSlice.java Normal file
View File

@ -0,0 +1,286 @@
/**
* 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.fsdataset.impl;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.DU;
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.BlockMetadataHeader;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
import org.apache.hadoop.hdfs.server.datanode.FinalizedReplica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.ReplicaWaitingToBeRecovered;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.DiskChecker;
import org.apache.hadoop.util.DiskChecker.DiskErrorException;
/**
* A block pool slice represents a portion of a block pool stored on a volume.
* Taken together, all BlockPoolSlices sharing a block pool ID across a
* cluster represent a single block pool.
*
* This class is synchronized by {@link FsVolumeImpl}.
*/
class BlockPoolSlice {
private final String bpid;
private final FsVolumeImpl volume; // volume to which this BlockPool belongs to
private final File currentDir; // StorageDirectory/current/bpid/current
private final LDir finalizedDir; // directory store Finalized replica
private final File rbwDir; // directory store RBW replica
private final File tmpDir; // directory store Temporary replica
// TODO:FEDERATION scalability issue - a thread per DU is needed
private final DU dfsUsage;
/**
* Create a blook pool slice
* @param bpid Block pool Id
* @param volume {@link FsVolumeImpl} to which this BlockPool belongs to
* @param bpDir directory corresponding to the BlockPool
* @param conf
* @throws IOException
*/
BlockPoolSlice(String bpid, FsVolumeImpl volume, File bpDir,
Configuration conf) throws IOException {
this.bpid = bpid;
this.volume = volume;
this.currentDir = new File(bpDir, DataStorage.STORAGE_DIR_CURRENT);
final File finalizedDir = new File(
currentDir, DataStorage.STORAGE_DIR_FINALIZED);
// Files that were being written when the datanode was last shutdown
// are now moved back to the data directory. It is possible that
// in the future, we might want to do some sort of datanode-local
// recovery for these blocks. For example, crc validation.
//
this.tmpDir = new File(bpDir, DataStorage.STORAGE_DIR_TMP);
if (tmpDir.exists()) {
FileUtil.fullyDelete(tmpDir);
}
this.rbwDir = new File(currentDir, DataStorage.STORAGE_DIR_RBW);
final boolean supportAppends = conf.getBoolean(
DFSConfigKeys.DFS_SUPPORT_APPEND_KEY,
DFSConfigKeys.DFS_SUPPORT_APPEND_DEFAULT);
if (rbwDir.exists() && !supportAppends) {
FileUtil.fullyDelete(rbwDir);
}
final int maxBlocksPerDir = conf.getInt(
DFSConfigKeys.DFS_DATANODE_NUMBLOCKS_KEY,
DFSConfigKeys.DFS_DATANODE_NUMBLOCKS_DEFAULT);
this.finalizedDir = new LDir(finalizedDir, maxBlocksPerDir);
if (!rbwDir.mkdirs()) { // create rbw directory if not exist
if (!rbwDir.isDirectory()) {
throw new IOException("Mkdirs failed to create " + rbwDir.toString());
}
}
if (!tmpDir.mkdirs()) {
if (!tmpDir.isDirectory()) {
throw new IOException("Mkdirs failed to create " + tmpDir.toString());
}
}
this.dfsUsage = new DU(bpDir, conf);
this.dfsUsage.start();
}
File getDirectory() {
return currentDir.getParentFile();
}
File getFinalizedDir() {
return finalizedDir.dir;
}
File getRbwDir() {
return rbwDir;
}
/** Run DU on local drives. It must be synchronized from caller. */
void decDfsUsed(long value) {
dfsUsage.decDfsUsed(value);
}
long getDfsUsed() throws IOException {
return dfsUsage.getUsed();
}
/**
* Temporary files. They get moved to the finalized block directory when
* the block is finalized.
*/
File createTmpFile(Block b) throws IOException {
File f = new File(tmpDir, b.getBlockName());
return DatanodeUtil.createTmpFile(b, f);
}
/**
* RBW files. They get moved to the finalized block directory when
* the block is finalized.
*/
File createRbwFile(Block b) throws IOException {
File f = new File(rbwDir, b.getBlockName());
return DatanodeUtil.createTmpFile(b, f);
}
File addBlock(Block b, File f) throws IOException {
File blockFile = finalizedDir.addBlock(b, f);
File metaFile = FsDatasetUtil.getMetaFile(blockFile, b.getGenerationStamp());
dfsUsage.incDfsUsed(b.getNumBytes()+metaFile.length());
return blockFile;
}
void checkDirs() throws DiskErrorException {
finalizedDir.checkDirTree();
DiskChecker.checkDir(tmpDir);
DiskChecker.checkDir(rbwDir);
}
void getVolumeMap(ReplicaMap volumeMap) throws IOException {
// add finalized replicas
finalizedDir.getVolumeMap(bpid, volumeMap, volume);
// add rbw replicas
addToReplicasMap(volumeMap, rbwDir, false);
}
/**
* Add replicas under the given directory to the volume map
* @param volumeMap the replicas map
* @param dir an input directory
* @param isFinalized true if the directory has finalized replicas;
* false if the directory has rbw replicas
*/
void addToReplicasMap(ReplicaMap volumeMap, File dir, boolean isFinalized
) throws IOException {
File blockFiles[] = FileUtil.listFiles(dir);
for (File blockFile : blockFiles) {
if (!Block.isBlockFilename(blockFile))
continue;
long genStamp = FsDatasetUtil.getGenerationStampFromFile(
blockFiles, blockFile);
long blockId = Block.filename2id(blockFile.getName());
ReplicaInfo newReplica = null;
if (isFinalized) {
newReplica = new FinalizedReplica(blockId,
blockFile.length(), genStamp, volume, blockFile.getParentFile());
} else {
newReplica = new ReplicaWaitingToBeRecovered(blockId,
validateIntegrity(blockFile, genStamp),
genStamp, volume, blockFile.getParentFile());
}
ReplicaInfo oldReplica = volumeMap.add(bpid, newReplica);
if (oldReplica != null) {
FsDatasetImpl.LOG.warn("Two block files with the same block id exist " +
"on disk: " + oldReplica.getBlockFile() + " and " + blockFile );
}
}
}
/**
* Find out the number of bytes in the block that match its crc.
*
* This algorithm assumes that data corruption caused by unexpected
* datanode shutdown occurs only in the last crc chunk. So it checks
* only the last chunk.
*
* @param blockFile the block file
* @param genStamp generation stamp of the block
* @return the number of valid bytes
*/
private long validateIntegrity(File blockFile, long genStamp) {
DataInputStream checksumIn = null;
InputStream blockIn = null;
try {
final File metaFile = FsDatasetUtil.getMetaFile(blockFile, genStamp);
long blockFileLen = blockFile.length();
long metaFileLen = metaFile.length();
int crcHeaderLen = DataChecksum.getChecksumHeaderSize();
if (!blockFile.exists() || blockFileLen == 0 ||
!metaFile.exists() || metaFileLen < crcHeaderLen) {
return 0;
}
checksumIn = new DataInputStream(
new BufferedInputStream(new FileInputStream(metaFile),
HdfsConstants.IO_FILE_BUFFER_SIZE));
// read and handle the common header here. For now just a version
BlockMetadataHeader header = BlockMetadataHeader.readHeader(checksumIn);
short version = header.getVersion();
if (version != BlockMetadataHeader.VERSION) {
FsDatasetImpl.LOG.warn("Wrong version (" + version + ") for metadata file "
+ metaFile + " ignoring ...");
}
DataChecksum checksum = header.getChecksum();
int bytesPerChecksum = checksum.getBytesPerChecksum();
int checksumSize = checksum.getChecksumSize();
long numChunks = Math.min(
(blockFileLen + bytesPerChecksum - 1)/bytesPerChecksum,
(metaFileLen - crcHeaderLen)/checksumSize);
if (numChunks == 0) {
return 0;
}
IOUtils.skipFully(checksumIn, (numChunks-1)*checksumSize);
blockIn = new FileInputStream(blockFile);
long lastChunkStartPos = (numChunks-1)*bytesPerChecksum;
IOUtils.skipFully(blockIn, lastChunkStartPos);
int lastChunkSize = (int)Math.min(
bytesPerChecksum, blockFileLen-lastChunkStartPos);
byte[] buf = new byte[lastChunkSize+checksumSize];
checksumIn.readFully(buf, lastChunkSize, checksumSize);
IOUtils.readFully(blockIn, buf, 0, lastChunkSize);
checksum.update(buf, 0, lastChunkSize);
if (checksum.compare(buf, lastChunkSize)) { // last chunk matches crc
return lastChunkStartPos + lastChunkSize;
} else { // last chunck is corrupt
return lastChunkStartPos;
}
} catch (IOException e) {
FsDatasetImpl.LOG.warn(e);
return 0;
} finally {
IOUtils.closeStream(checksumIn);
IOUtils.closeStream(blockIn);
}
}
void clearPath(File f) {
finalizedDir.clearPath(f);
}
@Override
public String toString() {
return currentDir.getAbsolutePath();
}
void shutdown() {
dfsUsage.shutdown();
}
}

73
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FSDatasetAsyncDiskService.java → hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetAsyncDiskService.java
View File

@ -16,7 +16,7 @@
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import java.io.File;
import java.util.HashMap;
@ -29,29 +29,25 @@ import java.util.concurrent.TimeUnit;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.protocol.BlockCommand;
/*
/**
* This class is a container of multiple thread pools, each for a volume,
* so that we can schedule async disk operations easily.
*
* Examples of async disk operations are deletion of block files in FSDataset.
* Examples of async disk operations are deletion of block files.
* We don't want to create a new thread for each of the deletion request, and
* we don't want to do all deletions in the heartbeat thread since deletion
* can be slow, and we don't want to use a single thread pool because that
* is inefficient when we have more than 1 volume. AsyncDiskService is the
* solution for these.
*
* This class is used inside FSDataset.
*
* In the future, we should extract AsyncDiskService and put it into common.
* The FSDataset-specific logic should reside here.
* This class and {@link org.apache.hadoop.util.AsyncDiskService} are similar.
* They should be combined.
*/
class FSDatasetAsyncDiskService {
final FSDataset dataset;
public static final Log LOG = LogFactory.getLog(FSDatasetAsyncDiskService.class);
class FsDatasetAsyncDiskService {
public static final Log LOG = LogFactory.getLog(FsDatasetAsyncDiskService.class);
// ThreadPool core pool size
private static final int CORE_THREADS_PER_VOLUME = 1;
@ -60,9 +56,8 @@ class FSDatasetAsyncDiskService {
// ThreadPool keep-alive time for threads over core pool size
private static final long THREADS_KEEP_ALIVE_SECONDS = 60;
private final ThreadGroup threadGroup = new ThreadGroup("async disk service");
private HashMap<File, ThreadPoolExecutor> executors
private final DataNode datanode;
private Map<File, ThreadPoolExecutor> executors
= new HashMap<File, ThreadPoolExecutor>();
/**
@ -74,8 +69,10 @@ class FSDatasetAsyncDiskService {
*
* @param volumes The roots of the data volumes.
*/
FSDatasetAsyncDiskService(FSDataset dataset, File[] volumes) {
this.dataset = dataset;
FsDatasetAsyncDiskService(DataNode datanode, File[] volumes) {
this.datanode = datanode;
final ThreadGroup threadGroup = new ThreadGroup(getClass().getSimpleName());
// Create one ThreadPool per volume
for (int v = 0 ; v < volumes.length; v++) {
final File vol = volumes[v];
@ -136,16 +133,12 @@ class FSDatasetAsyncDiskService {
* tasks to finish.
*/
synchronized void shutdown() {
if (executors == null) {
LOG.warn("AsyncDiskService has already shut down.");
} else {
LOG.info("Shutting down all async disk service threads...");
for (Map.Entry<File, ThreadPoolExecutor> e
: executors.entrySet()) {
for (Map.Entry<File, ThreadPoolExecutor> e : executors.entrySet()) {
e.getValue().shutdown();
}
// clear the executor map so that calling execute again will fail.
@ -159,11 +152,11 @@ class FSDatasetAsyncDiskService {
* Delete the block file and meta file from the disk asynchronously, adjust
* dfsUsed statistics accordingly.
*/
void deleteAsync(FSDataset.FSVolume volume, File blockFile, File metaFile,
void deleteAsync(FsVolumeImpl volume, File blockFile, File metaFile,
ExtendedBlock block) {
DataNode.LOG.info("Scheduling block " + block.getLocalBlock().toString()
LOG.info("Scheduling block " + block.getLocalBlock()
+ " file " + blockFile + " for deletion");
ReplicaFileDeleteTask deletionTask = new ReplicaFileDeleteTask(dataset,
ReplicaFileDeleteTask deletionTask = new ReplicaFileDeleteTask(
volume, blockFile, metaFile, block);
execute(volume.getCurrentDir(), deletionTask);
}
@ -171,51 +164,43 @@ class FSDatasetAsyncDiskService {
/** A task for deleting a block file and its associated meta file, as well
* as decrement the dfs usage of the volume.
*/
static class ReplicaFileDeleteTask implements Runnable {
final FSDataset dataset;
final FSDataset.FSVolume volume;
class ReplicaFileDeleteTask implements Runnable {
final FsVolumeImpl volume;
final File blockFile;
final File metaFile;
final ExtendedBlock block;
ReplicaFileDeleteTask(FSDataset dataset, FSDataset.FSVolume volume, File blockFile,
ReplicaFileDeleteTask(FsVolumeImpl volume, File blockFile,
File metaFile, ExtendedBlock block) {
this.dataset = dataset;
this.volume = volume;
this.blockFile = blockFile;
this.metaFile = metaFile;
this.block = block;
}
FSDataset.FSVolume getVolume() {
return volume;
}
@Override
public String toString() {
// Called in AsyncDiskService.execute for displaying error messages.
return "deletion of block " + block.getBlockPoolId() + " "
+ block.getLocalBlock().toString() + " with block file " + blockFile
+ block.getLocalBlock() + " with block file " + blockFile
+ " and meta file " + metaFile + " from volume " + volume;
}
@Override
public void run() {
long dfsBytes = blockFile.length() + metaFile.length();
if ( !blockFile.delete() || ( !metaFile.delete() && metaFile.exists() ) ) {
DataNode.LOG.warn("Unexpected error trying to delete block "
+ block.getBlockPoolId() + " " + block.getLocalBlock().toString()
if (!blockFile.delete() || (!metaFile.delete() && metaFile.exists())) {
LOG.warn("Unexpected error trying to delete block "
+ block.getBlockPoolId() + " " + block.getLocalBlock()
+ " at file " + blockFile + ". Ignored.");
} else {
if(block.getLocalBlock().getNumBytes() != BlockCommand.NO_ACK){
dataset.notifyNamenodeDeletedBlock(block);
datanode.notifyNamenodeDeletedBlock(block);
}
volume.decDfsUsed(block.getBlockPoolId(), dfsBytes);
DataNode.LOG.info("Deleted block " + block.getBlockPoolId() + " "
+ block.getLocalBlock().toString() + " at file " + blockFile);
LOG.info("Deleted block " + block.getBlockPoolId() + " "
+ block.getLocalBlock() + " at file " + blockFile);
}
}
}
};
}

36
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetFactory.java Normal file
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@ -0,0 +1,36 @@
/**
* 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.fsdataset.impl;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
/**
* A factory for creating {@link FsDatasetImpl} objects.
*/
public class FsDatasetFactory extends FsDatasetSpi.Factory<FsDatasetImpl> {
@Override
public FsDatasetImpl newInstance(DataNode datanode,
DataStorage storage, Configuration conf) throws IOException {
return new FsDatasetImpl(datanode, storage, conf);
}
}

1470
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FSDataset.java → hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
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107
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetUtil.java Normal file
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@ -0,0 +1,107 @@
/**
* 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.fsdataset.impl;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.Arrays;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.GenerationStamp;
import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
/** Utility methods. */
@InterfaceAudience.Private
public class FsDatasetUtil {
static boolean isUnlinkTmpFile(File f) {
return f.getName().endsWith(DatanodeUtil.UNLINK_BLOCK_SUFFIX);
}
static File getOrigFile(File unlinkTmpFile) {
final String name = unlinkTmpFile.getName();
if (!name.endsWith(DatanodeUtil.UNLINK_BLOCK_SUFFIX)) {
throw new IllegalArgumentException("unlinkTmpFile=" + unlinkTmpFile
+ " does not end with " + DatanodeUtil.UNLINK_BLOCK_SUFFIX);
}
final int n = name.length() - DatanodeUtil.UNLINK_BLOCK_SUFFIX.length();
return new File(unlinkTmpFile.getParentFile(), name.substring(0, n));
}
static File getMetaFile(File f, long gs) {
return new File(f.getParent(),
DatanodeUtil.getMetaName(f.getName(), gs));
}
/** Find the corresponding meta data file from a given block file */
static File findMetaFile(final File blockFile) throws IOException {
final String prefix = blockFile.getName() + "_";
final File parent = blockFile.getParentFile();
final File[] matches = parent.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return dir.equals(parent) && name.startsWith(prefix)
&& name.endsWith(Block.METADATA_EXTENSION);
}
});
if (matches == null || matches.length == 0) {
throw new IOException("Meta file not found, blockFile=" + blockFile);
}
if (matches.length > 1) {
throw new IOException("Found more than one meta files: "
+ Arrays.asList(matches));
}
return matches[0];
}
/**
* Find the meta-file for the specified block file
* and then return the generation stamp from the name of the meta-file.
*/
static long getGenerationStampFromFile(File[] listdir, File blockFile) {
String blockName = blockFile.getName();
for (int j = 0; j < listdir.length; j++) {
String path = listdir[j].getName();
if (!path.startsWith(blockName)) {
continue;
}
if (blockFile == listdir[j]) {
continue;
}
return Block.getGenerationStamp(listdir[j].getName());
}
FsDatasetImpl.LOG.warn("Block " + blockFile + " does not have a metafile!");
return GenerationStamp.GRANDFATHER_GENERATION_STAMP;
}
/** Find the corresponding meta data file from a given block file */
static long parseGenerationStamp(File blockFile, File metaFile
) throws IOException {
final String metaname = metaFile.getName();
final String gs = metaname.substring(blockFile.getName().length() + 1,
metaname.length() - Block.METADATA_EXTENSION.length());
try {
return Long.parseLong(gs);
} catch(NumberFormatException nfe) {
throw new IOException("Failed to parse generation stamp: blockFile="
+ blockFile + ", metaFile=" + metaFile, nfe);
}
}
}

288
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java Normal file
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@ -0,0 +1,288 @@
/**
* 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.fsdataset.impl;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.DF;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.util.DiskChecker.DiskErrorException;
/**
* The underlying volume used to store replica.
*
* It uses the {@link FsDatasetImpl} object for synchronization.
*/
@InterfaceAudience.Private
class FsVolumeImpl implements FsVolumeSpi {
private final FsDatasetImpl dataset;
private final String storageID;
private final Map<String, BlockPoolSlice> bpSlices
= new HashMap<String, BlockPoolSlice>();
private final File currentDir; // <StorageDirectory>/current
private final DF usage;
private final long reserved;
FsVolumeImpl(FsDatasetImpl dataset, String storageID, File currentDir,
Configuration conf) throws IOException {
this.dataset = dataset;
this.storageID = storageID;
this.reserved = conf.getLong(
DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY,
DFSConfigKeys.DFS_DATANODE_DU_RESERVED_DEFAULT);
this.currentDir = currentDir;
File parent = currentDir.getParentFile();
this.usage = new DF(parent, conf);
}
File getCurrentDir() {
return currentDir;
}
File getRbwDir(String bpid) throws IOException {
return getBlockPoolSlice(bpid).getRbwDir();
}
void decDfsUsed(String bpid, long value) {
synchronized(dataset) {
BlockPoolSlice bp = bpSlices.get(bpid);
if (bp != null) {
bp.decDfsUsed(value);
}
}
}
long getDfsUsed() throws IOException {
long dfsUsed = 0;
synchronized(dataset) {
for(BlockPoolSlice s : bpSlices.values()) {
dfsUsed += s.getDfsUsed();
}
}
return dfsUsed;
}
long getBlockPoolUsed(String bpid) throws IOException {
return getBlockPoolSlice(bpid).getDfsUsed();
}
/**
* Calculate the capacity of the filesystem, after removing any
* reserved capacity.
* @return the unreserved number of bytes left in this filesystem. May be zero.
*/
long getCapacity() {
long remaining = usage.getCapacity() - reserved;
return remaining > 0 ? remaining : 0;
}
@Override
public long getAvailable() throws IOException {
long remaining = getCapacity()-getDfsUsed();
long available = usage.getAvailable();
if (remaining > available) {
remaining = available;
}
return (remaining > 0) ? remaining : 0;
}
long getReserved(){
return reserved;
}
BlockPoolSlice getBlockPoolSlice(String bpid) throws IOException {
BlockPoolSlice bp = bpSlices.get(bpid);
if (bp == null) {
throw new IOException("block pool " + bpid + " is not found");
}
return bp;
}
@Override
public String getPath(String bpid) throws IOException {
return getBlockPoolSlice(bpid).getDirectory().getAbsolutePath();
}
@Override
public File getFinalizedDir(String bpid) throws IOException {
return getBlockPoolSlice(bpid).getFinalizedDir();
}
/**
* Make a deep copy of the list of currently active BPIDs
*/
@Override
public String[] getBlockPoolList() {
return bpSlices.keySet().toArray(new String[bpSlices.keySet().size()]);
}
/**
* Temporary files. They get moved to the finalized block directory when
* the block is finalized.
*/
File createTmpFile(String bpid, Block b) throws IOException {
return getBlockPoolSlice(bpid).createTmpFile(b);
}
/**
* RBW files. They get moved to the finalized block directory when
* the block is finalized.
*/
File createRbwFile(String bpid, Block b) throws IOException {
return getBlockPoolSlice(bpid).createRbwFile(b);
}
File addBlock(String bpid, Block b, File f) throws IOException {
return getBlockPoolSlice(bpid).addBlock(b, f);
}
void checkDirs() throws DiskErrorException {
// TODO:FEDERATION valid synchronization
for(BlockPoolSlice s : bpSlices.values()) {
s.checkDirs();
}
}
void getVolumeMap(ReplicaMap volumeMap) throws IOException {
for(BlockPoolSlice s : bpSlices.values()) {
s.getVolumeMap(volumeMap);
}
}
void getVolumeMap(String bpid, ReplicaMap volumeMap) throws IOException {
getBlockPoolSlice(bpid).getVolumeMap(volumeMap);
}
/**
* Add replicas under the given directory to the volume map
* @param volumeMap the replicas map
* @param dir an input directory
* @param isFinalized true if the directory has finalized replicas;
* false if the directory has rbw replicas
* @throws IOException
*/
void addToReplicasMap(String bpid, ReplicaMap volumeMap,
File dir, boolean isFinalized) throws IOException {
BlockPoolSlice bp = getBlockPoolSlice(bpid);
// TODO move this up
// dfsUsage.incDfsUsed(b.getNumBytes()+metaFile.length());
bp.addToReplicasMap(volumeMap, dir, isFinalized);
}
void clearPath(String bpid, File f) throws IOException {
getBlockPoolSlice(bpid).clearPath(f);
}
@Override
public String toString() {
return currentDir.getAbsolutePath();
}
void shutdown() {
Set<Entry<String, BlockPoolSlice>> set = bpSlices.entrySet();
for (Entry<String, BlockPoolSlice> entry : set) {
entry.getValue().shutdown();
}
}
void addBlockPool(String bpid, Configuration conf) throws IOException {
File bpdir = new File(currentDir, bpid);
BlockPoolSlice bp = new BlockPoolSlice(bpid, this, bpdir, conf);
bpSlices.put(bpid, bp);
}
void shutdownBlockPool(String bpid) {
BlockPoolSlice bp = bpSlices.get(bpid);
if (bp != null) {
bp.shutdown();
}
bpSlices.remove(bpid);
}
boolean isBPDirEmpty(String bpid) throws IOException {
File volumeCurrentDir = this.getCurrentDir();
File bpDir = new File(volumeCurrentDir, bpid);
File bpCurrentDir = new File(bpDir, DataStorage.STORAGE_DIR_CURRENT);
File finalizedDir = new File(bpCurrentDir,
DataStorage.STORAGE_DIR_FINALIZED);
File rbwDir = new File(bpCurrentDir, DataStorage.STORAGE_DIR_RBW);
if (finalizedDir.exists() && FileUtil.list(finalizedDir).length != 0) {
return false;
}
if (rbwDir.exists() && FileUtil.list(rbwDir).length != 0) {
return false;
}
return true;
}
void deleteBPDirectories(String bpid, boolean force) throws IOException {
File volumeCurrentDir = this.getCurrentDir();
File bpDir = new File(volumeCurrentDir, bpid);
if (!bpDir.isDirectory()) {
// nothing to be deleted
return;
}
File tmpDir = new File(bpDir, DataStorage.STORAGE_DIR_TMP);
File bpCurrentDir = new File(bpDir, DataStorage.STORAGE_DIR_CURRENT);
File finalizedDir = new File(bpCurrentDir,
DataStorage.STORAGE_DIR_FINALIZED);
File rbwDir = new File(bpCurrentDir, DataStorage.STORAGE_DIR_RBW);
if (force) {
FileUtil.fullyDelete(bpDir);
} else {
if (!rbwDir.delete()) {
throw new IOException("Failed to delete " + rbwDir);
}
if (!finalizedDir.delete()) {
throw new IOException("Failed to delete " + finalizedDir);
}
FileUtil.fullyDelete(tmpDir);
for (File f : FileUtil.listFiles(bpCurrentDir)) {
if (!f.delete()) {
throw new IOException("Failed to delete " + f);
}
}
if (!bpCurrentDir.delete()) {
throw new IOException("Failed to delete " + bpCurrentDir);
}
for (File f : FileUtil.listFiles(bpDir)) {
if (!f.delete()) {
throw new IOException("Failed to delete " + f);
}
}
if (!bpDir.delete()) {
throw new IOException("Failed to delete " + bpDir);
}
}
}
String getStorageID() {
return storageID;
}
}

172
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeList.java Normal file
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@ -0,0 +1,172 @@
/**
* 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.fsdataset.impl;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.VolumeChoosingPolicy;
import org.apache.hadoop.util.DiskChecker.DiskErrorException;
class FsVolumeList {
/**
* Read access to this unmodifiable list is not synchronized.
* This list is replaced on modification holding "this" lock.
*/
volatile List<FsVolumeImpl> volumes = null;
private final VolumeChoosingPolicy<FsVolumeImpl> blockChooser;
private volatile int numFailedVolumes;
FsVolumeList(List<FsVolumeImpl> volumes, int failedVols,
VolumeChoosingPolicy<FsVolumeImpl> blockChooser) {
this.volumes = Collections.unmodifiableList(volumes);
this.blockChooser = blockChooser;
this.numFailedVolumes = failedVols;
}
int numberOfFailedVolumes() {
return numFailedVolumes;
}
/**
* Get next volume. Synchronized to ensure {@link #curVolume} is updated
* by a single thread and next volume is chosen with no concurrent
* update to {@link #volumes}.
* @param blockSize free space needed on the volume
* @return next volume to store the block in.
*/
synchronized FsVolumeImpl getNextVolume(long blockSize) throws IOException {
return blockChooser.chooseVolume(volumes, blockSize);
}
long getDfsUsed() throws IOException {
long dfsUsed = 0L;
for (FsVolumeImpl v : volumes) {
dfsUsed += v.getDfsUsed();
}
return dfsUsed;
}
long getBlockPoolUsed(String bpid) throws IOException {
long dfsUsed = 0L;
for (FsVolumeImpl v : volumes) {
dfsUsed += v.getBlockPoolUsed(bpid);
}
return dfsUsed;
}
long getCapacity() {
long capacity = 0L;
for (FsVolumeImpl v : volumes) {
capacity += v.getCapacity();
}
return capacity;
}
long getRemaining() throws IOException {
long remaining = 0L;
for (FsVolumeSpi vol : volumes) {
remaining += vol.getAvailable();
}
return remaining;
}
void getVolumeMap(ReplicaMap volumeMap) throws IOException {
for (FsVolumeImpl v : volumes) {
v.getVolumeMap(volumeMap);
}
}
void getVolumeMap(String bpid, ReplicaMap volumeMap) throws IOException {
for (FsVolumeImpl v : volumes) {
v.getVolumeMap(bpid, volumeMap);
}
}
/**
* Calls {@link FsVolumeImpl#checkDirs()} on each volume, removing any
* volumes from the active list that result in a DiskErrorException.
*
* This method is synchronized to allow only one instance of checkDirs()
* call
* @return list of all the removed volumes.
*/
synchronized List<FsVolumeImpl> checkDirs() {
ArrayList<FsVolumeImpl> removedVols = null;
// Make a copy of volumes for performing modification
final List<FsVolumeImpl> volumeList = new ArrayList<FsVolumeImpl>(volumes);
for(Iterator<FsVolumeImpl> i = volumeList.iterator(); i.hasNext(); ) {
final FsVolumeImpl fsv = i.next();
try {
fsv.checkDirs();
} catch (DiskErrorException e) {
FsDatasetImpl.LOG.warn("Removing failed volume " + fsv + ": ",e);
if (removedVols == null) {
removedVols = new ArrayList<FsVolumeImpl>(1);
}
removedVols.add(fsv);
fsv.shutdown();
i.remove(); // Remove the volume
numFailedVolumes++;
}
}
if (removedVols != null && removedVols.size() > 0) {
// Replace volume list
volumes = Collections.unmodifiableList(volumeList);
FsDatasetImpl.LOG.info("Completed checkDirs. Removed " + removedVols.size()
+ " volumes. Current volumes: " + this);
}
return removedVols;
}
@Override
public String toString() {
return volumes.toString();
}
void addBlockPool(String bpid, Configuration conf) throws IOException {
for (FsVolumeImpl v : volumes) {
v.addBlockPool(bpid, conf);
}
}
void removeBlockPool(String bpid) {
for (FsVolumeImpl v : volumes) {
v.shutdownBlockPool(bpid);
}
}
void shutdown() {
for (FsVolumeImpl volume : volumes) {
if(volume != null) {
volume.shutdown();
}
}
}
}

228
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/LDir.java Normal file
View File

@ -0,0 +1,228 @@
/**
* 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.fsdataset.impl;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.util.DiskChecker;
import org.apache.hadoop.util.DiskChecker.DiskErrorException;
/**
* A node type that can be built into a tree reflecting the
* hierarchy of replicas on the local disk.
*/
class LDir {
final File dir;
final int maxBlocksPerDir;
private int numBlocks = 0;
private LDir[] children = null;
private int lastChildIdx = 0;
LDir(File dir, int maxBlocksPerDir) throws IOException {
this.dir = dir;
this.maxBlocksPerDir = maxBlocksPerDir;
if (!dir.exists()) {
if (!dir.mkdirs()) {
throw new IOException("Failed to mkdirs " + dir);
}
} else {
File[] files = FileUtil.listFiles(dir);
List<LDir> dirList = new ArrayList<LDir>();
for (int idx = 0; idx < files.length; idx++) {
if (files[idx].isDirectory()) {
dirList.add(new LDir(files[idx], maxBlocksPerDir));
} else if (Block.isBlockFilename(files[idx])) {
numBlocks++;
}
}
if (dirList.size() > 0) {
children = dirList.toArray(new LDir[dirList.size()]);
}
}
}
File addBlock(Block b, File src) throws IOException {
//First try without creating subdirectories
File file = addBlock(b, src, false, false);
return (file != null) ? file : addBlock(b, src, true, true);
}
private File addBlock(Block b, File src, boolean createOk, boolean resetIdx
) throws IOException {
if (numBlocks < maxBlocksPerDir) {
final File dest = FsDatasetImpl.moveBlockFiles(b, src, dir);
numBlocks += 1;
return dest;
}
if (lastChildIdx < 0 && resetIdx) {
//reset so that all children will be checked
lastChildIdx = DFSUtil.getRandom().nextInt(children.length);
}
if (lastChildIdx >= 0 && children != null) {
//Check if any child-tree has room for a block.
for (int i=0; i < children.length; i++) {
int idx = (lastChildIdx + i)%children.length;
File file = children[idx].addBlock(b, src, false, resetIdx);
if (file != null) {
lastChildIdx = idx;
return file;
}
}
lastChildIdx = -1;
}
if (!createOk) {
return null;
}
if (children == null || children.length == 0) {
children = new LDir[maxBlocksPerDir];
for (int idx = 0; idx < maxBlocksPerDir; idx++) {
final File sub = new File(dir, DataStorage.BLOCK_SUBDIR_PREFIX+idx);
children[idx] = new LDir(sub, maxBlocksPerDir);
}
}
//now pick a child randomly for creating a new set of subdirs.
lastChildIdx = DFSUtil.getRandom().nextInt(children.length);
return children[ lastChildIdx ].addBlock(b, src, true, false);
}
void getVolumeMap(String bpid, ReplicaMap volumeMap, FsVolumeImpl volume
) throws IOException {
if (children != null) {
for (int i = 0; i < children.length; i++) {
children[i].getVolumeMap(bpid, volumeMap, volume);
}
}
recoverTempUnlinkedBlock();
volume.addToReplicasMap(bpid, volumeMap, dir, true);
}
/**
* Recover unlinked tmp files on datanode restart. If the original block
* does not exist, then the tmp file is renamed to be the
* original file name; otherwise the tmp file is deleted.
*/
private void recoverTempUnlinkedBlock() throws IOException {
File files[] = FileUtil.listFiles(dir);
for (File file : files) {
if (!FsDatasetUtil.isUnlinkTmpFile(file)) {
continue;
}
File blockFile = FsDatasetUtil.getOrigFile(file);
if (blockFile.exists()) {
// If the original block file still exists, then no recovery is needed.
if (!file.delete()) {
throw new IOException("Unable to cleanup unlinked tmp file " + file);
}
} else {
if (!file.renameTo(blockFile)) {
throw new IOException("Unable to cleanup detached file " + file);
}
}
}
}
/**
* check if a data diretory is healthy
* @throws DiskErrorException
*/
void checkDirTree() throws DiskErrorException {
DiskChecker.checkDir(dir);
if (children != null) {
for (int i = 0; i < children.length; i++) {
children[i].checkDirTree();
}
}
}
void clearPath(File f) {
String root = dir.getAbsolutePath();
String dir = f.getAbsolutePath();
if (dir.startsWith(root)) {
String[] dirNames = dir.substring(root.length()).
split(File.separator + DataStorage.BLOCK_SUBDIR_PREFIX);
if (clearPath(f, dirNames, 1))
return;
}
clearPath(f, null, -1);
}
/**
* dirNames is an array of string integers derived from
* usual directory structure data/subdirN/subdirXY/subdirM ...
* If dirName array is non-null, we only check the child at
* the children[dirNames[idx]]. This avoids iterating over
* children in common case. If directory structure changes
* in later versions, we need to revisit this.
*/
private boolean clearPath(File f, String[] dirNames, int idx) {
if ((dirNames == null || idx == dirNames.length) &&
dir.compareTo(f) == 0) {
numBlocks--;
return true;
}
if (dirNames != null) {
//guess the child index from the directory name
if (idx > (dirNames.length - 1) || children == null) {
return false;
}
int childIdx;
try {
childIdx = Integer.parseInt(dirNames[idx]);
} catch (NumberFormatException ignored) {
// layout changed? we could print a warning.
return false;
}
return (childIdx >= 0 && childIdx < children.length) ?
children[childIdx].clearPath(f, dirNames, idx+1) : false;
}
//guesses failed. back to blind iteration.
if (children != null) {
for(int i=0; i < children.length; i++) {
if (children[i].clearPath(f, null, -1)){
return true;
}
}
}
return false;
}
@Override
public String toString() {
return "FSDir{dir=" + dir + ", children="
+ (children == null ? null : Arrays.asList(children)) + "}";
}
}

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicasMap.java → hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/ReplicaMap.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.server.datanode;
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import java.util.Collection;
import java.util.HashMap;
@ -23,11 +23,12 @@ import java.util.Map;
import org.apache.hadoop.HadoopIllegalArgumentException;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
/**
* Maintains the replicas map.
* Maintains the replica map.
*/
class ReplicasMap {
class ReplicaMap {
// Object using which this class is synchronized
private final Object mutex;
@ -35,7 +36,7 @@ class ReplicasMap {
private Map<String, Map<Long, ReplicaInfo>> map =
new HashMap<String, Map<Long, ReplicaInfo>>();
ReplicasMap(Object mutex) {
ReplicaMap(Object mutex) {
if (mutex == null) {
throw new HadoopIllegalArgumentException(
"Object to synchronize on cannot be null");

228
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/RollingLogsImpl.java Normal file
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@ -0,0 +1,228 @@
/**
* 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.fsdataset.impl;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintStream;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.hadoop.hdfs.server.datanode.DataBlockScanner;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.RollingLogs;
class RollingLogsImpl implements RollingLogs {
private static final String CURR_SUFFIX = ".curr";
private static final String PREV_SUFFIX = ".prev";
static boolean isFilePresent(String dir, String filePrefix) {
return new File(dir, filePrefix + CURR_SUFFIX).exists() ||
new File(dir, filePrefix + PREV_SUFFIX).exists();
}
private final File curr;
private final File prev;
private PrintStream out; //require synchronized access
private Appender appender = new Appender() {
@Override
public Appendable append(CharSequence csq) {
synchronized(RollingLogsImpl.this) {
if (out == null) {
throw new IllegalStateException(RollingLogsImpl.this
+ " is not yet opened.");
}
out.print(csq);
}
return this;
}
@Override
public Appendable append(char c) {
throw new UnsupportedOperationException();
}
@Override
public Appendable append(CharSequence csq, int start, int end) {
throw new UnsupportedOperationException();
}
@Override
public void close() {
synchronized(RollingLogsImpl.this) {
if (out != null) {
out.close();
out = null;
}
}
}
};
private final AtomicInteger numReaders = new AtomicInteger();
RollingLogsImpl(String dir, String filePrefix) throws FileNotFoundException{
curr = new File(dir, filePrefix + CURR_SUFFIX);
prev = new File(dir, filePrefix + PREV_SUFFIX);
out = new PrintStream(new FileOutputStream(curr, true));
}
@Override
public Reader iterator(boolean skipPrevFile) throws IOException {
numReaders.incrementAndGet();
return new Reader(skipPrevFile);
}
@Override
public Appender appender() {
return appender;
}
@Override
public boolean roll() throws IOException {
if (numReaders.get() > 0) {
return false;
}
if (!prev.delete() && prev.exists()) {
throw new IOException("Failed to delete " + prev);
}
synchronized(this) {
appender.close();
final boolean renamed = curr.renameTo(prev);
out = new PrintStream(new FileOutputStream(curr, true));
if (!renamed) {
throw new IOException("Failed to rename " + curr + " to " + prev);
}
}
return true;
}
@Override
public String toString() {
return curr.toString();
}
/**
* This is used to read the lines in order.
* If the data is not read completely (i.e, untill hasNext() returns
* false), it needs to be explicitly
*/
private class Reader implements RollingLogs.LineIterator {
private File file;
private BufferedReader reader;
private String line;
private boolean closed = false;
private Reader(boolean skipPrevFile) throws IOException {
reader = null;
file = skipPrevFile? curr : prev;
readNext();
}
@Override
public boolean isPrevious() {
return file == prev;
}
private boolean openFile() throws IOException {
for(int i=0; i<2; i++) {
if (reader != null || i > 0) {
// move to next file
file = isPrevious()? curr : null;
}
if (file == null) {
return false;
}
if (file.exists()) {
break;
}
}
if (reader != null ) {
reader.close();
reader = null;
}
reader = new BufferedReader(new FileReader(file));
return true;
}
// read next line if possible.
private void readNext() throws IOException {
line = null;
try {
if (reader != null && (line = reader.readLine()) != null) {
return;
}
if (line == null) {
// move to the next file.
if (openFile()) {
readNext();
}
}
} finally {
if (!hasNext()) {
close();
}
}
}
@Override
public boolean hasNext() {
return line != null;
}
@Override
public String next() {
String curLine = line;
try {
readNext();
} catch (IOException e) {
DataBlockScanner.LOG.warn("Failed to read next line.", e);
}
return curLine;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
@Override
public void close() throws IOException {
if (!closed) {
try {
if (reader != null) {
reader.close();
}
} finally {
file = null;
reader = null;
closed = true;
final int n = numReaders.decrementAndGet();
assert(n >= 0);
}
}
}
}
}

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLeaseRecovery.java
View File

@ -28,7 +28,7 @@ import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.datanode.TestInterDatanodeProtocol;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestInterDatanodeProtocol;
import org.apache.hadoop.hdfs.server.namenode.LeaseManager;
import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter;

33
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/DataNodeTestUtils.java
View File

@ -22,12 +22,16 @@ package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetTestUtil;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol;
import org.mockito.Mockito;
import com.google.common.base.Preconditions;
@ -100,6 +104,19 @@ public class DataNodeTestUtils {
return spy;
}
public static InterDatanodeProtocol createInterDatanodeProtocolProxy(
DataNode dn, DatanodeID datanodeid, final Configuration conf
) throws IOException {
return DataNode.createInterDataNodeProtocolProxy(datanodeid, conf,
dn.getDnConf().socketTimeout);
}
public static void shutdownBlockScanner(DataNode dn) {
if (dn.blockScanner != null) {
dn.blockScanner.shutdown();
}
}
/**
* This method is used for testing.
* Examples are adding and deleting blocks directly.
@ -111,26 +128,22 @@ public class DataNodeTestUtils {
return dn.getFSDataset();
}
public static FSDataset getFsDatasetImpl(DataNode dn) {
return (FSDataset)dn.getFSDataset();
}
public static File getFile(DataNode dn, String bpid, long bid) {
return getFsDatasetImpl(dn).getFile(bpid, bid);
return FsDatasetTestUtil.getFile(dn.getFSDataset(), bpid, bid);
}
public static File getBlockFile(DataNode dn, String bpid, Block b
) throws IOException {
return getFsDatasetImpl(dn).getBlockFile(bpid, b);
return FsDatasetTestUtil.getBlockFile(dn.getFSDataset(), bpid, b);
}
public static boolean unlinkBlock(DataNode dn, ExtendedBlock block, int numLinks
public static boolean unlinkBlock(DataNode dn, ExtendedBlock bk, int numLinks
) throws IOException {
return getFsDatasetImpl(dn).getReplicaInfo(block).unlinkBlock(numLinks);
return FsDatasetTestUtil.unlinkBlock(dn.getFSDataset(), bk, numLinks);
}
public static long getPendingAsyncDeletions(DataNode dn) {
return getFsDatasetImpl(dn).asyncDiskService.countPendingDeletions();
return FsDatasetTestUtil.getPendingAsyncDeletions(dn.getFSDataset());
}
/**
@ -142,6 +155,6 @@ public class DataNodeTestUtils {
*/
public static ReplicaInfo fetchReplicaInfo(final DataNode dn,
final String bpid, final long blkId) {
return getFsDatasetImpl(dn).fetchReplicaInfo(bpid, blkId);
return FsDatasetTestUtil.fetchReplicaInfo(dn.getFSDataset(), bpid, blkId);
}
}

5
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java
View File

@ -613,14 +613,13 @@ public class TestBlockReport {
// Look about specified DN for the replica of the block from 1st DN
final DataNode dn1 = cluster.getDataNodes().get(DN_N1);
final FSDataset dataset1 = (FSDataset)DataNodeTestUtils.getFSDataset(dn1);
String bpid = cluster.getNamesystem().getBlockPoolId();
Replica r = dataset1.fetchReplicaInfo(bpid, bl.getBlockId());
Replica r = DataNodeTestUtils.fetchReplicaInfo(dn1, bpid, bl.getBlockId());
long start = System.currentTimeMillis();
int count = 0;
while (r == null) {
waitTil(5);
r = dataset1.fetchReplicaInfo(bpid, bl.getBlockId());
r = DataNodeTestUtils.fetchReplicaInfo(dn1, bpid, bl.getBlockId());
long waiting_period = System.currentTimeMillis() - start;
if (count++ % 100 == 0)
if(LOG.isDebugEnabled()) {

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeFailure.java
View File

@ -37,6 +37,7 @@ import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
@ -376,7 +377,7 @@ public class TestDataNodeVolumeFailure {
new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.startsWith("blk_") &&
name.endsWith(DatanodeUtil.METADATA_EXTENSION);
name.endsWith(Block.METADATA_EXTENSION);
}
}
);

32
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java
View File

@ -38,7 +38,9 @@ import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.GenerationStamp;
import org.apache.hadoop.hdfs.server.datanode.FSDataset.FSVolume;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetTestUtil;
/**
* Tests {@link DirectoryScanner} handling of differences
@ -51,7 +53,7 @@ public class TestDirectoryScanner extends TestCase {
private MiniDFSCluster cluster;
private String bpid;
private FSDataset fds = null;
private FsDatasetSpi<? extends FsVolumeSpi> fds = null;
private DirectoryScanner scanner = null;
private Random rand = new Random();
private Random r = new Random();
@ -72,7 +74,7 @@ public class TestDirectoryScanner extends TestCase {
/** Truncate a block file */
private long truncateBlockFile() throws IOException {
synchronized (fds) {
for (ReplicaInfo b : fds.volumeMap.replicas(bpid)) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File f = b.getBlockFile();
File mf = b.getMetaFile();
// Truncate a block file that has a corresponding metadata file
@ -91,7 +93,7 @@ public class TestDirectoryScanner extends TestCase {
/** Delete a block file */
private long deleteBlockFile() {
synchronized(fds) {
for (ReplicaInfo b : fds.volumeMap.replicas(bpid)) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File f = b.getBlockFile();
File mf = b.getMetaFile();
// Delete a block file that has corresponding metadata file
@ -107,7 +109,7 @@ public class TestDirectoryScanner extends TestCase {
/** Delete block meta file */
private long deleteMetaFile() {
synchronized(fds) {
for (ReplicaInfo b : fds.volumeMap.replicas(bpid)) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File file = b.getMetaFile();
// Delete a metadata file
if (file.exists() && file.delete()) {
@ -124,7 +126,7 @@ public class TestDirectoryScanner extends TestCase {
long id = rand.nextLong();
while (true) {
id = rand.nextLong();
if (fds.fetchReplicaInfo(bpid, id) == null) {
if (FsDatasetTestUtil.fetchReplicaInfo(fds, bpid, id) == null) {
break;
}
}
@ -142,7 +144,7 @@ public class TestDirectoryScanner extends TestCase {
/** Create a block file in a random volume*/
private long createBlockFile() throws IOException {
List<FSVolume> volumes = fds.getVolumes();
List<? extends FsVolumeSpi> volumes = fds.getVolumes();
int index = rand.nextInt(volumes.size() - 1);
long id = getFreeBlockId();
File finalizedDir = volumes.get(index).getFinalizedDir(bpid);
@ -155,7 +157,7 @@ public class TestDirectoryScanner extends TestCase {
/** Create a metafile in a random volume*/
private long createMetaFile() throws IOException {
List<FSVolume> volumes = fds.getVolumes();
List<? extends FsVolumeSpi> volumes = fds.getVolumes();
int index = rand.nextInt(volumes.size() - 1);
long id = getFreeBlockId();
File finalizedDir = volumes.get(index).getFinalizedDir(bpid);
@ -168,7 +170,7 @@ public class TestDirectoryScanner extends TestCase {
/** Create block file and corresponding metafile in a rondom volume */
private long createBlockMetaFile() throws IOException {
List<FSVolume> volumes = fds.getVolumes();
List<? extends FsVolumeSpi> volumes = fds.getVolumes();
int index = rand.nextInt(volumes.size() - 1);
long id = getFreeBlockId();
File finalizedDir = volumes.get(index).getFinalizedDir(bpid);
@ -228,8 +230,7 @@ public class TestDirectoryScanner extends TestCase {
try {
cluster.waitActive();
bpid = cluster.getNamesystem().getBlockPoolId();
fds = (FSDataset)DataNodeTestUtils.getFSDataset(
cluster.getDataNodes().get(0));
fds = DataNodeTestUtils.getFSDataset(cluster.getDataNodes().get(0));
CONF.setInt(DFSConfigKeys.DFS_DATANODE_DIRECTORYSCAN_THREADS_KEY,
parallelism);
DataNode dn = cluster.getDataNodes().get(0);
@ -348,12 +349,13 @@ public class TestDirectoryScanner extends TestCase {
private void verifyAddition(long blockId, long genStamp, long size) {
final ReplicaInfo replicainfo;
replicainfo = fds.fetchReplicaInfo(bpid, blockId);
replicainfo = FsDatasetTestUtil.fetchReplicaInfo(fds, bpid, blockId);
assertNotNull(replicainfo);
// Added block has the same file as the one created by the test
File file = new File(getBlockFile(blockId));
assertEquals(file.getName(), fds.getFile(bpid, blockId).getName());
assertEquals(file.getName(),
FsDatasetTestUtil.getFile(fds, bpid, blockId).getName());
// Generation stamp is same as that of created file
assertEquals(genStamp, replicainfo.getGenerationStamp());
@ -364,12 +366,12 @@ public class TestDirectoryScanner extends TestCase {
private void verifyDeletion(long blockId) {
// Ensure block does not exist in memory
assertNull(fds.fetchReplicaInfo(bpid, blockId));
assertNull(FsDatasetTestUtil.fetchReplicaInfo(fds, bpid, blockId));
}
private void verifyGenStamp(long blockId, long genStamp) {
final ReplicaInfo memBlock;
memBlock = fds.fetchReplicaInfo(bpid, blockId);
memBlock = FsDatasetTestUtil.fetchReplicaInfo(fds, bpid, blockId);
assertNotNull(memBlock);
assertEquals(genStamp, memBlock.getGenerationStamp());
}

5
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestSimulatedFSDataset.java
View File

@ -31,6 +31,7 @@ import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetFactory;
import org.apache.hadoop.util.DataChecksum;
/**
@ -90,7 +91,7 @@ public class TestSimulatedFSDataset extends TestCase {
public void testFSDatasetFactory() {
final Configuration conf = new Configuration();
FsDatasetSpi.Factory<?> f = FsDatasetSpi.Factory.getFactory(conf);
assertEquals(FSDataset.Factory.class, f.getClass());
assertEquals(FsDatasetFactory.class, f.getClass());
assertFalse(f.isSimulated());
SimulatedFSDataset.setFactory(conf);
@ -243,7 +244,7 @@ public class TestSimulatedFSDataset extends TestCase {
}
}
public void checkInvalidBlock(ExtendedBlock b) throws IOException {
public void checkInvalidBlock(ExtendedBlock b) {
final SimulatedFSDataset fsdataset = getSimulatedFSDataset();
assertFalse(fsdataset.isValidBlock(b));
try {

5
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestTransferRbw.java
View File

@ -36,6 +36,7 @@ import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BlockOpResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetTestUtil;
import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
import org.apache.log4j.Level;
import org.junit.Assert;
@ -58,8 +59,8 @@ public class TestTransferRbw {
}
private static ReplicaInPipeline getReplica(final DataNode datanode,
final String bpid, final ReplicaState expectedState) throws InterruptedException {
final FSDataset dataset = ((FSDataset)datanode.data);
final Collection<ReplicaInfo> replicas = dataset.volumeMap.replicas(bpid);
final Collection<ReplicaInfo> replicas = FsDatasetTestUtil.getReplicas(
datanode.getFSDataset(), bpid);
for(int i = 0; i < 5 && replicas.size() == 0; i++) {
LOG.info("wait since replicas.size() == 0; i=" + i);
Thread.sleep(1000);

59
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetTestUtil.java Normal file
View File

@ -0,0 +1,59 @@
/**
* 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.fsdataset.impl;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
public class FsDatasetTestUtil {
public static File getFile(FsDatasetSpi<?> fsd, String bpid, long bid) {
return ((FsDatasetImpl)fsd).getFile(bpid, bid);
}
public static File getBlockFile(FsDatasetSpi<?> fsd, String bpid, Block b
) throws IOException {
return ((FsDatasetImpl)fsd).getBlockFile(bpid, b);
}
public static boolean unlinkBlock(FsDatasetSpi<?> fsd,
ExtendedBlock block, int numLinks) throws IOException {
final ReplicaInfo info = ((FsDatasetImpl)fsd).getReplicaInfo(block);
return info.unlinkBlock(numLinks);
}
public static ReplicaInfo fetchReplicaInfo (final FsDatasetSpi<?> fsd,
final String bpid, final long blockId) {
return ((FsDatasetImpl)fsd).fetchReplicaInfo(bpid, blockId);
}
public static long getPendingAsyncDeletions(FsDatasetSpi<?> fsd) {
return ((FsDatasetImpl)fsd).asyncDiskService.countPendingDeletions();
}
public static Collection<ReplicaInfo> getReplicas(FsDatasetSpi<?> fsd,
String bpid) {
return ((FsDatasetImpl)fsd).volumeMap.replicas(bpid);
}
}

24
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDatanodeRestart.java → hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestDatanodeRestart.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.server.datanode;
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import java.io.File;
import java.io.FileInputStream;
@ -36,7 +36,10 @@ import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.FSDataset.FSVolume;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.io.IOUtils;
import org.junit.Assert;
@ -98,8 +101,8 @@ public class TestDatanodeRestart {
out.write(writeBuf);
out.hflush();
DataNode dn = cluster.getDataNodes().get(0);
for (FsVolumeSpi v : dn.data.getVolumes()) {
FSVolume volume = (FSVolume)v;
for (FsVolumeSpi v : dataset(dn).getVolumes()) {
final FsVolumeImpl volume = (FsVolumeImpl)v;
File currentDir = volume.getCurrentDir().getParentFile().getParentFile();
File rbwDir = new File(currentDir, "rbw");
for (File file : rbwDir.listFiles()) {
@ -114,7 +117,7 @@ public class TestDatanodeRestart {
// check volumeMap: one rwr replica
String bpid = cluster.getNamesystem().getBlockPoolId();
ReplicasMap replicas = ((FSDataset)(dn.data)).volumeMap;
ReplicaMap replicas = dataset(dn).volumeMap;
Assert.assertEquals(1, replicas.size(bpid));
ReplicaInfo replica = replicas.replicas(bpid).iterator().next();
Assert.assertEquals(ReplicaState.RWR, replica.getState());
@ -123,7 +126,7 @@ public class TestDatanodeRestart {
} else {
Assert.assertEquals(fileLen, replica.getNumBytes());
}
dn.data.invalidate(bpid, new Block[]{replica});
dataset(dn).invalidate(bpid, new Block[]{replica});
} finally {
IOUtils.closeStream(out);
if (fs.exists(src)) {
@ -151,7 +154,7 @@ public class TestDatanodeRestart {
String bpid = cluster.getNamesystem().getBlockPoolId();
DataNode dn = cluster.getDataNodes().get(0);
Iterator<ReplicaInfo> replicasItor =
((FSDataset)dn.data).volumeMap.replicas(bpid).iterator();
dataset(dn).volumeMap.replicas(bpid).iterator();
ReplicaInfo replica = replicasItor.next();
createUnlinkTmpFile(replica, true, true); // rename block file
createUnlinkTmpFile(replica, false, true); // rename meta file
@ -167,8 +170,7 @@ public class TestDatanodeRestart {
dn = cluster.getDataNodes().get(0);
// check volumeMap: 4 finalized replica
Collection<ReplicaInfo> replicas =
((FSDataset)(dn.data)).volumeMap.replicas(bpid);
Collection<ReplicaInfo> replicas = dataset(dn).volumeMap.replicas(bpid);
Assert.assertEquals(4, replicas.size());
replicasItor = replicas.iterator();
while (replicasItor.hasNext()) {
@ -180,6 +182,10 @@ public class TestDatanodeRestart {
}
}
private static FsDatasetImpl dataset(DataNode dn) {
return (FsDatasetImpl)DataNodeTestUtils.getFSDataset(dn);
}
private static void createUnlinkTmpFile(ReplicaInfo replicaInfo,
boolean changeBlockFile,
boolean isRename) throws IOException {

68
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestInterDatanodeProtocol.java → hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestInterDatanodeProtocol.java
View File

@ -15,22 +15,15 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.util.List;
import java.net.InetSocketAddress;
import java.net.SocketTimeoutException;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ipc.RpcPayloadHeader.RpcKind;
import org.apache.hadoop.ipc.Server;
import org.apache.hadoop.net.NetUtils;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
@ -41,16 +34,28 @@ import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.hdfs.protocol.RecoveryInProgressException;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.datanode.FinalizedReplica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.ReplicaUnderRecovery;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.hdfs.server.protocol.BlockRecoveryCommand.RecoveringBlock;
import org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
import org.apache.hadoop.hdfs.server.protocol.BlockRecoveryCommand.RecoveringBlock;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ipc.RpcPayloadHeader.RpcKind;
import org.apache.hadoop.ipc.Server;
import org.apache.hadoop.net.NetUtils;
import org.junit.Assert;
import org.junit.Test;
@ -103,14 +108,14 @@ public class TestInterDatanodeProtocol {
}
public static void checkMetaInfo(ExtendedBlock b, DataNode dn) throws IOException {
Block metainfo = dn.data.getStoredBlock(b.getBlockPoolId(), b.getBlockId());
Block metainfo = DataNodeTestUtils.getFSDataset(dn).getStoredBlock(
b.getBlockPoolId(), b.getBlockId());
Assert.assertEquals(b.getBlockId(), metainfo.getBlockId());
Assert.assertEquals(b.getNumBytes(), metainfo.getNumBytes());
}
public static LocatedBlock getLastLocatedBlock(
ClientProtocol namenode, String src
) throws IOException {
ClientProtocol namenode, String src) throws IOException {
//get block info for the last block
LocatedBlocks locations = namenode.getBlockLocations(src, 0, Long.MAX_VALUE);
List<LocatedBlock> blocks = locations.getLocatedBlocks();
@ -148,13 +153,11 @@ public class TestInterDatanodeProtocol {
//connect to a data node
DataNode datanode = cluster.getDataNode(datanodeinfo[0].getIpcPort());
InterDatanodeProtocol idp = DataNode.createInterDataNodeProtocolProxy(
datanodeinfo[0], conf, datanode.getDnConf().socketTimeout);
InterDatanodeProtocol idp = DataNodeTestUtils.createInterDatanodeProtocolProxy(
datanode, datanodeinfo[0], conf);
//stop block scanner, so we could compare lastScanTime
if (datanode.blockScanner != null) {
datanode.blockScanner.shutdown();
}
DataNodeTestUtils.shutdownBlockScanner(datanode);
//verify BlockMetaDataInfo
ExtendedBlock b = locatedblock.getBlock();
@ -187,14 +190,14 @@ public class TestInterDatanodeProtocol {
}
/** Test
* {@link FSDataset#initReplicaRecovery(String, ReplicasMap, Block, long)}
* {@link FsDatasetImpl#initReplicaRecovery(String, ReplicaMap, Block, long)}
*/
@Test
public void testInitReplicaRecovery() throws IOException {
final long firstblockid = 10000L;
final long gs = 7777L;
final long length = 22L;
final ReplicasMap map = new ReplicasMap(this);
final ReplicaMap map = new ReplicaMap(this);
String bpid = "BP-TEST";
final Block[] blocks = new Block[5];
for(int i = 0; i < blocks.length; i++) {
@ -208,7 +211,8 @@ public class TestInterDatanodeProtocol {
final ReplicaInfo originalInfo = map.get(bpid, b);
final long recoveryid = gs + 1;
final ReplicaRecoveryInfo recoveryInfo = FSDataset.initReplicaRecovery(bpid, map, blocks[0], recoveryid);
final ReplicaRecoveryInfo recoveryInfo = FsDatasetImpl.initReplicaRecovery(
bpid, map, blocks[0], recoveryid);
assertEquals(originalInfo, recoveryInfo);
final ReplicaUnderRecovery updatedInfo = (ReplicaUnderRecovery)map.get(bpid, b);
@ -217,7 +221,7 @@ public class TestInterDatanodeProtocol {
//recover one more time
final long recoveryid2 = gs + 2;
final ReplicaRecoveryInfo recoveryInfo2 = FSDataset.initReplicaRecovery(bpid, map, blocks[0], recoveryid2);
final ReplicaRecoveryInfo recoveryInfo2 = FsDatasetImpl.initReplicaRecovery(bpid, map, blocks[0], recoveryid2);
assertEquals(originalInfo, recoveryInfo2);
final ReplicaUnderRecovery updatedInfo2 = (ReplicaUnderRecovery)map.get(bpid, b);
@ -226,7 +230,7 @@ public class TestInterDatanodeProtocol {
//case RecoveryInProgressException
try {
FSDataset.initReplicaRecovery(bpid, map, b, recoveryid);
FsDatasetImpl.initReplicaRecovery(bpid, map, b, recoveryid);
Assert.fail();
}
catch(RecoveryInProgressException ripe) {
@ -237,7 +241,7 @@ public class TestInterDatanodeProtocol {
{ // BlockRecoveryFI_01: replica not found
final long recoveryid = gs + 1;
final Block b = new Block(firstblockid - 1, length, gs);
ReplicaRecoveryInfo r = FSDataset.initReplicaRecovery(bpid, map, b, recoveryid);
ReplicaRecoveryInfo r = FsDatasetImpl.initReplicaRecovery(bpid, map, b, recoveryid);
Assert.assertNull("Data-node should not have this replica.", r);
}
@ -245,7 +249,7 @@ public class TestInterDatanodeProtocol {
final long recoveryid = gs - 1;
final Block b = new Block(firstblockid + 1, length, gs);
try {
FSDataset.initReplicaRecovery(bpid, map, b, recoveryid);
FsDatasetImpl.initReplicaRecovery(bpid, map, b, recoveryid);
Assert.fail();
}
catch(IOException ioe) {
@ -258,7 +262,7 @@ public class TestInterDatanodeProtocol {
final long recoveryid = gs + 1;
final Block b = new Block(firstblockid, length, gs+1);
try {
FSDataset.initReplicaRecovery(bpid, map, b, recoveryid);
FsDatasetImpl.initReplicaRecovery(bpid, map, b, recoveryid);
fail("InitReplicaRecovery should fail because replica's " +
"gs is less than the block's gs");
} catch (IOException e) {
@ -270,7 +274,7 @@ public class TestInterDatanodeProtocol {
/**
* Test for
* {@link FSDataset#updateReplicaUnderRecovery(ExtendedBlock, long, long)}
* {@link FsDatasetImpl#updateReplicaUnderRecovery(ExtendedBlock, long, long)}
* */
@Test
public void testUpdateReplicaUnderRecovery() throws IOException {
@ -296,22 +300,22 @@ public class TestInterDatanodeProtocol {
//get DataNode and FSDataset objects
final DataNode datanode = cluster.getDataNode(datanodeinfo[0].getIpcPort());
Assert.assertTrue(datanode != null);
Assert.assertTrue(datanode.data instanceof FSDataset);
final FSDataset fsdataset = (FSDataset)datanode.data;
//initReplicaRecovery
final ExtendedBlock b = locatedblock.getBlock();
final long recoveryid = b.getGenerationStamp() + 1;
final long newlength = b.getNumBytes() - 1;
final FsDatasetSpi<?> fsdataset = DataNodeTestUtils.getFSDataset(datanode);
final ReplicaRecoveryInfo rri = fsdataset.initReplicaRecovery(
new RecoveringBlock(b, null, recoveryid));
//check replica
final ReplicaInfo replica = fsdataset.fetchReplicaInfo(bpid, b.getBlockId());
final ReplicaInfo replica = FsDatasetTestUtil.fetchReplicaInfo(
fsdataset, bpid, b.getBlockId());
Assert.assertEquals(ReplicaState.RUR, replica.getState());
//check meta data before update
FSDataset.checkReplicaFiles(replica);
FsDatasetImpl.checkReplicaFiles(replica);
//case "THIS IS NOT SUPPOSED TO HAPPEN"
//with (block length) != (stored replica's on disk length).

8
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestReplicasMap.java → hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestReplicaMap.java
View File

@ -15,21 +15,23 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.datanode.FinalizedReplica;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ReplicaMap;
import org.junit.Before;
import org.junit.Test;
/**
* Unit test for ReplicasMap class
*/
public class TestReplicasMap {
private final ReplicasMap map = new ReplicasMap(TestReplicasMap.class);
public class TestReplicaMap {
private final ReplicaMap map = new ReplicaMap(TestReplicaMap.class);
private final String bpid = "BP-TEST";
private final Block block = new Block(1234, 1234, 1234);

37
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestWriteToReplica.java → hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestWriteToReplica.java
View File

@ -15,14 +15,23 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import java.io.IOException;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.datanode.FSDataset.FSVolume;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.datanode.FinalizedReplica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaAlreadyExistsException;
import org.apache.hadoop.hdfs.server.datanode.ReplicaBeingWritten;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException;
import org.apache.hadoop.hdfs.server.datanode.ReplicaUnderRecovery;
import org.apache.hadoop.hdfs.server.datanode.ReplicaWaitingToBeRecovered;
import org.apache.hadoop.util.DiskChecker.DiskOutOfSpaceException;
import org.junit.Assert;
import org.junit.Test;
@ -45,7 +54,7 @@ public class TestWriteToReplica {
try {
cluster.waitActive();
DataNode dn = cluster.getDataNodes().get(0);
FSDataset dataSet = (FSDataset)dn.data;
FsDatasetImpl dataSet = (FsDatasetImpl)DataNodeTestUtils.getFSDataset(dn);
// set up replicasMap
String bpid = cluster.getNamesystem().getBlockPoolId();
@ -66,7 +75,7 @@ public class TestWriteToReplica {
try {
cluster.waitActive();
DataNode dn = cluster.getDataNodes().get(0);
FSDataset dataSet = (FSDataset)dn.data;
FsDatasetImpl dataSet = (FsDatasetImpl)DataNodeTestUtils.getFSDataset(dn);
// set up replicasMap
String bpid = cluster.getNamesystem().getBlockPoolId();
@ -86,7 +95,7 @@ public class TestWriteToReplica {
try {
cluster.waitActive();
DataNode dn = cluster.getDataNodes().get(0);
FSDataset dataSet = (FSDataset)dn.data;
FsDatasetImpl dataSet = (FsDatasetImpl)DataNodeTestUtils.getFSDataset(dn);
// set up replicasMap
String bpid = cluster.getNamesystem().getBlockPoolId();
@ -106,7 +115,7 @@ public class TestWriteToReplica {
try {
cluster.waitActive();
DataNode dn = cluster.getDataNodes().get(0);
FSDataset dataSet = (FSDataset)dn.data;
FsDatasetImpl dataSet = (FsDatasetImpl)DataNodeTestUtils.getFSDataset(dn);
// set up replicasMap
String bpid = cluster.getNamesystem().getBlockPoolId();
@ -128,7 +137,7 @@ public class TestWriteToReplica {
* @return Contrived blocks for further testing.
* @throws IOException
*/
private ExtendedBlock[] setup(String bpid, FSDataset dataSet) throws IOException {
private ExtendedBlock[] setup(String bpid, FsDatasetImpl dataSet) throws IOException {
// setup replicas map
ExtendedBlock[] blocks = new ExtendedBlock[] {
@ -137,8 +146,8 @@ public class TestWriteToReplica {
new ExtendedBlock(bpid, 5, 1, 2005), new ExtendedBlock(bpid, 6, 1, 2006)
};
ReplicasMap replicasMap = dataSet.volumeMap;
FSVolume vol = dataSet.volumes.getNextVolume(0);
ReplicaMap replicasMap = dataSet.volumeMap;
FsVolumeImpl vol = dataSet.volumes.getNextVolume(0);
ReplicaInfo replicaInfo = new FinalizedReplica(
blocks[FINALIZED].getLocalBlock(), vol, vol.getCurrentDir().getParentFile());
replicasMap.add(bpid, replicaInfo);
@ -165,9 +174,9 @@ public class TestWriteToReplica {
return blocks;
}
private void testAppend(String bpid, FSDataset dataSet, ExtendedBlock[] blocks) throws IOException {
private void testAppend(String bpid, FsDatasetImpl dataSet, ExtendedBlock[] blocks) throws IOException {
long newGS = blocks[FINALIZED].getGenerationStamp()+1;
final FSVolume v = (FSVolume)dataSet.volumeMap.get(
final FsVolumeImpl v = (FsVolumeImpl)dataSet.volumeMap.get(
bpid, blocks[FINALIZED].getLocalBlock()).getVolume();
long available = v.getCapacity()-v.getDfsUsed();
long expectedLen = blocks[FINALIZED].getNumBytes();
@ -285,7 +294,7 @@ public class TestWriteToReplica {
}
}
private void testClose(FSDataset dataSet, ExtendedBlock [] blocks) throws IOException {
private void testClose(FsDatasetImpl dataSet, ExtendedBlock [] blocks) throws IOException {
long newGS = blocks[FINALIZED].getGenerationStamp()+1;
dataSet.recoverClose(blocks[FINALIZED], newGS,
blocks[FINALIZED].getNumBytes()); // successful
@ -335,7 +344,7 @@ public class TestWriteToReplica {
}
}
private void testWriteToRbw(FSDataset dataSet, ExtendedBlock[] blocks) throws IOException {
private void testWriteToRbw(FsDatasetImpl dataSet, ExtendedBlock[] blocks) throws IOException {
try {
dataSet.recoverRbw(blocks[FINALIZED],
blocks[FINALIZED].getGenerationStamp()+1,
@ -428,7 +437,7 @@ public class TestWriteToReplica {
dataSet.createRbw(blocks[NON_EXISTENT]);
}
private void testWriteToTemporary(FSDataset dataSet, ExtendedBlock[] blocks) throws IOException {
private void testWriteToTemporary(FsDatasetImpl dataSet, ExtendedBlock[] blocks) throws IOException {
try {
dataSet.createTemporary(blocks[FINALIZED]);
Assert.fail("Should not have created a temporary replica that was " +