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HDFS-10636. Modify ReplicaInfo to remove the assumption that replica metadata and data are stored in java.io.File. (Virajith Jalaparti via lei)

This commit is contained in:
Lei Xu 2016-09-13 12:53:37 -07:00
parent 1c0d18f322
commit 86c9862bec
41 changed files with 2230 additions and 1319 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceStorage.java
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@ -20,6 +20,7 @@
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
@ -741,7 +742,20 @@ public boolean isTrashAllowed(File blockFile) {
*
* @return the trash directory for a given block file that is being deleted.
*/
public String getTrashDirectory(File blockFile) {
public String getTrashDirectory(ReplicaInfo info) {
URI blockURI = info.getBlockURI();
try{
File blockFile = new File(blockURI);
return getTrashDirectory(blockFile);
} catch (IllegalArgumentException e) {
LOG.warn("Failed to get block file for replica " + info, e);
}
return null;
}
private String getTrashDirectory(File blockFile) {
if (isTrashAllowed(blockFile)) {
Matcher matcher = BLOCK_POOL_CURRENT_PATH_PATTERN.matcher(blockFile.getParent());
String trashDirectory = matcher.replaceFirst("$1$2" + TRASH_ROOT_DIR + "$4");

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockReceiver.java
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@ -121,7 +121,7 @@ class BlockReceiver implements Closeable {
/** the block to receive */
private final ExtendedBlock block;
/** the replica to write */
private ReplicaInPipelineInterface replicaInfo;
private ReplicaInPipeline replicaInfo;
/** pipeline stage */
private final BlockConstructionStage stage;
private final boolean isTransfer;

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
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@ -38,6 +38,7 @@
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.datatransfer.PacketHeader;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.LengthInputStream;
import org.apache.hadoop.hdfs.util.DataTransferThrottler;
@ -248,8 +249,8 @@ class BlockSender implements java.io.Closeable {
}
// if there is a write in progress
ChunkChecksum chunkChecksum = null;
if (replica instanceof ReplicaBeingWritten) {
final ReplicaBeingWritten rbw = (ReplicaBeingWritten)replica;
if (replica.getState() == ReplicaState.RBW) {
final ReplicaInPipeline rbw = (ReplicaInPipeline) replica;
waitForMinLength(rbw, startOffset + length);
chunkChecksum = rbw.getLastChecksumAndDataLen();
}
@ -473,7 +474,7 @@ private static Replica getReplica(ExtendedBlock block, DataNode datanode)
* @param len minimum length to reach
* @throws IOException on failing to reach the len in given wait time
*/
private static void waitForMinLength(ReplicaBeingWritten rbw, long len)
private static void waitForMinLength(ReplicaInPipeline rbw, long len)
throws IOException {
// Wait for 3 seconds for rbw replica to reach the minimum length
for (int i = 0; i < 30 && rbw.getBytesOnDisk() < len; i++) {

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -3474,4 +3474,4 @@ public String getDiskBalancerSetting(String key) throws IOException {
void setBlockScanner(BlockScanner blockScanner) {
this.blockScanner = blockScanner;
}
}
}

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNodeFaultInjector.java
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@ -56,6 +56,6 @@ public void noRegistration() throws IOException { }
public void failMirrorConnection() throws IOException { }
public void failPipeline(ReplicaInPipelineInterface replicaInfo,
public void failPipeline(ReplicaInPipeline replicaInfo,
String mirrorAddr) throws IOException { }
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataStorage.java
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@ -204,9 +204,9 @@ public void clearRollingUpgradeMarker(String bpid) throws IOException {
* @return trash directory if rolling upgrade is in progress, null
* otherwise.
*/
public String getTrashDirectoryForBlockFile(String bpid, File blockFile) {
public String getTrashDirectoryForReplica(String bpid, ReplicaInfo info) {
if (trashEnabledBpids.contains(bpid)) {
return getBPStorage(bpid).getTrashDirectory(blockFile);
return getBPStorage(bpid).getTrashDirectory(info);
}
return null;
}

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DirectoryScanner.java
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@ -597,14 +597,14 @@ private void scan() {
diffs.put(bpid, diffRecord);
statsRecord.totalBlocks = blockpoolReport.length;
List<FinalizedReplica> bl = dataset.getFinalizedBlocks(bpid);
FinalizedReplica[] memReport = bl.toArray(new FinalizedReplica[bl.size()]);
List<ReplicaInfo> bl = dataset.getFinalizedBlocks(bpid);
ReplicaInfo[] memReport = bl.toArray(new ReplicaInfo[bl.size()]);
Arrays.sort(memReport); // Sort based on blockId
int d = 0; // index for blockpoolReport
int m = 0; // index for memReprot
while (m < memReport.length && d < blockpoolReport.length) {
FinalizedReplica memBlock = memReport[m];
ReplicaInfo memBlock = memReport[m];
ScanInfo info = blockpoolReport[d];
if (info.getBlockId() < memBlock.getBlockId()) {
if (!dataset.isDeletingBlock(bpid, info.getBlockId())) {
@ -633,7 +633,7 @@ private void scan() {
// or block file length is different than expected
statsRecord.mismatchBlocks++;
addDifference(diffRecord, statsRecord, info);
} else if (info.getBlockFile().compareTo(memBlock.getBlockFile()) != 0) {
} else if (memBlock.compareWith(info) != 0) {
// volumeMap record and on-disk files don't match.
statsRecord.duplicateBlocks++;
addDifference(diffRecord, statsRecord, info);
@ -652,7 +652,7 @@ private void scan() {
}
}
while (m < memReport.length) {
FinalizedReplica current = memReport[m++];
ReplicaInfo current = memReport[m++];
addDifference(diffRecord, statsRecord,
current.getBlockId(), current.getVolume());
}

27
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FinalizedReplica.java
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@ -22,11 +22,12 @@
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
/**
* This class describes a replica that has been finalized.
*/
public class FinalizedReplica extends ReplicaInfo {
public class FinalizedReplica extends LocalReplica {
/**
* Constructor
@ -88,4 +89,28 @@ public int hashCode() {
public String toString() {
return super.toString();
}
@Override
public ReplicaInfo getOriginalReplica() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support getOriginalReplica");
}
@Override
public long getRecoveryID() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support getRecoveryID");
}
@Override
public void setRecoveryID(long recoveryId) {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support setRecoveryID");
}
@Override
public ReplicaRecoveryInfo createInfo() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support createInfo");
}
}

479
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/LocalReplica.java Normal file
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@ -0,0 +1,479 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FileStatus;
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.permission.FsPermission;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.Storage;
import org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.ScanInfo;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.LengthInputStream;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetUtil;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.nativeio.NativeIO;
import org.apache.hadoop.util.DataChecksum;
import com.google.common.annotations.VisibleForTesting;
/**
* This class is used for all replicas which are on local storage media
* and hence, are backed by files.
*/
abstract public class LocalReplica extends ReplicaInfo {
/**
* Base directory containing numerically-identified sub directories and
* possibly blocks.
*/
private File baseDir;
/**
* Whether or not this replica's parent directory includes subdirs, in which
* case we can generate them based on the replica's block ID
*/
private boolean hasSubdirs;
private static final Map<String, File> internedBaseDirs = new HashMap<String, File>();
static final Log LOG = LogFactory.getLog(LocalReplica.class);
private final static boolean IS_NATIVE_IO_AVAIL;
static {
IS_NATIVE_IO_AVAIL = NativeIO.isAvailable();
if (Path.WINDOWS && !IS_NATIVE_IO_AVAIL) {
LOG.warn("Data node cannot fully support concurrent reading"
+ " and writing without native code extensions on Windows.");
}
}
/**
* Constructor
* @param block a block
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
LocalReplica(Block block, FsVolumeSpi vol, File dir) {
this(block.getBlockId(), block.getNumBytes(),
block.getGenerationStamp(), vol, dir);
}
/**
* Constructor
* @param blockId block id
* @param len replica length
* @param genStamp replica generation stamp
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
LocalReplica(long blockId, long len, long genStamp,
FsVolumeSpi vol, File dir) {
super(vol, blockId, len, genStamp);
setDirInternal(dir);
}
/**
* Copy constructor.
* @param from the source replica
*/
LocalReplica(LocalReplica from) {
this(from, from.getVolume(), from.getDir());
}
/**
* Get the full path of this replica's data file.
* @return the full path of this replica's data file
*/
@VisibleForTesting
public File getBlockFile() {
return new File(getDir(), getBlockName());
}
/**
* Get the full path of this replica's meta file.
* @return the full path of this replica's meta file
*/
@VisibleForTesting
public File getMetaFile() {
return new File(getDir(),
DatanodeUtil.getMetaName(getBlockName(), getGenerationStamp()));
}
/**
* Return the parent directory path where this replica is located.
* @return the parent directory path where this replica is located
*/
protected File getDir() {
return hasSubdirs ? DatanodeUtil.idToBlockDir(baseDir,
getBlockId()) : baseDir;
}
/**
* Set the parent directory where this replica is located.
* @param dir the parent directory where the replica is located
*/
private void setDirInternal(File dir) {
if (dir == null) {
baseDir = null;
return;
}
ReplicaDirInfo dirInfo = parseBaseDir(dir);
this.hasSubdirs = dirInfo.hasSubidrs;
synchronized (internedBaseDirs) {
if (!internedBaseDirs.containsKey(dirInfo.baseDirPath)) {
// Create a new String path of this file and make a brand new File object
// to guarantee we drop the reference to the underlying char[] storage.
File baseDir = new File(dirInfo.baseDirPath);
internedBaseDirs.put(dirInfo.baseDirPath, baseDir);
}
this.baseDir = internedBaseDirs.get(dirInfo.baseDirPath);
}
}
@VisibleForTesting
public static class ReplicaDirInfo {
public String baseDirPath;
public boolean hasSubidrs;
public ReplicaDirInfo (String baseDirPath, boolean hasSubidrs) {
this.baseDirPath = baseDirPath;
this.hasSubidrs = hasSubidrs;
}
}
@VisibleForTesting
public static ReplicaDirInfo parseBaseDir(File dir) {
File currentDir = dir;
boolean hasSubdirs = false;
while (currentDir.getName().startsWith(DataStorage.BLOCK_SUBDIR_PREFIX)) {
hasSubdirs = true;
currentDir = currentDir.getParentFile();
}
return new ReplicaDirInfo(currentDir.getAbsolutePath(), hasSubdirs);
}
/**
* Copy specified file into a temporary file. Then rename the
* temporary file to the original name. This will cause any
* hardlinks to the original file to be removed. The temporary
* files are created in the same directory. The temporary files will
* be recovered (especially on Windows) on datanode restart.
*/
private void breakHardlinks(File file, Block b) throws IOException {
File tmpFile = DatanodeUtil.createTmpFile(b, DatanodeUtil.getUnlinkTmpFile(file));
try (FileInputStream in = new FileInputStream(file)) {
try (FileOutputStream out = new FileOutputStream(tmpFile)){
IOUtils.copyBytes(in, out, 16 * 1024);
}
if (file.length() != tmpFile.length()) {
throw new IOException("Copy of file " + file + " size " + file.length()+
" into file " + tmpFile +
" resulted in a size of " + tmpFile.length());
}
FileUtil.replaceFile(tmpFile, file);
} catch (IOException e) {
boolean done = tmpFile.delete();
if (!done) {
DataNode.LOG.info("detachFile failed to delete temporary file " +
tmpFile);
}
throw e;
}
}
/**
* This function "breaks hardlinks" to the current replica file.
*
* When doing a DataNode upgrade, we create a bunch of hardlinks to each block
* file. This cleverly ensures that both the old and the new storage
* directories can contain the same block file, without using additional space
* for the data.
*
* However, when we want to append to the replica file, we need to "break" the
* hardlink to ensure that the old snapshot continues to contain the old data
* length. If we failed to do that, we could roll back to the previous/
* directory during a downgrade, and find that the block contents were longer
* than they were at the time of upgrade.
*
* @return true only if data was copied.
* @throws IOException
*/
public boolean breakHardLinksIfNeeded() throws IOException {
File file = getBlockFile();
if (file == null || getVolume() == null) {
throw new IOException("detachBlock:Block not found. " + this);
}
File meta = getMetaFile();
int linkCount = HardLink.getLinkCount(file);
if (linkCount > 1) {
DataNode.LOG.info("Breaking hardlink for " + linkCount + "x-linked " +
"block " + this);
breakHardlinks(file, this);
}
if (HardLink.getLinkCount(meta) > 1) {
breakHardlinks(meta, this);
}
return true;
}
@Override
public URI getBlockURI() {
return getBlockFile().toURI();
}
@Override
public InputStream getDataInputStream(long seekOffset) throws IOException {
File blockFile = getBlockFile();
if (IS_NATIVE_IO_AVAIL) {
return NativeIO.getShareDeleteFileInputStream(blockFile, seekOffset);
} else {
try {
return FsDatasetUtil.openAndSeek(blockFile, seekOffset);
} catch (FileNotFoundException fnfe) {
throw new IOException("Block " + this + " is not valid. " +
"Expected block file at " + blockFile + " does not exist.");
}
}
}
@Override
public OutputStream getDataOutputStream(boolean append) throws IOException {
return new FileOutputStream(getBlockFile(), append);
}
@Override
public boolean blockDataExists() {
return getBlockFile().exists();
}
@Override
public boolean deleteBlockData() {
return getBlockFile().delete();
}
@Override
public long getBlockDataLength() {
return getBlockFile().length();
}
@Override
public URI getMetadataURI() {
return getMetaFile().toURI();
}
@Override
public LengthInputStream getMetadataInputStream(long offset)
throws IOException {
File meta = getMetaFile();
return new LengthInputStream(
FsDatasetUtil.openAndSeek(meta, offset), meta.length());
}
@Override
public OutputStream getMetadataOutputStream(boolean append)
throws IOException {
return new FileOutputStream(getMetaFile(), append);
}
@Override
public boolean metadataExists() {
return getMetaFile().exists();
}
@Override
public boolean deleteMetadata() {
return getMetaFile().delete();
}
@Override
public long getMetadataLength() {
return getMetaFile().length();
}
@Override
public boolean renameMeta(URI destURI) throws IOException {
return renameFile(getMetaFile(), new File(destURI));
}
@Override
public boolean renameData(URI destURI) throws IOException {
return renameFile(getBlockFile(), new File(destURI));
}
private boolean renameFile(File srcfile, File destfile) throws IOException {
try {
NativeIO.renameTo(srcfile, destfile);
return true;
} catch (IOException e) {
throw new IOException("Failed to move block file for " + this
+ " from " + srcfile + " to " + destfile.getAbsolutePath(), e);
}
}
@Override
public void updateWithReplica(StorageLocation replicaLocation) {
// for local replicas, the replica location is assumed to be a file.
File diskFile = replicaLocation.getFile();
if (null == diskFile) {
setDirInternal(null);
} else {
setDirInternal(diskFile.getParentFile());
}
}
@Override
public boolean getPinning(LocalFileSystem localFS) throws IOException {
FileStatus fss =
localFS.getFileStatus(new Path(getBlockFile().getAbsolutePath()));
return fss.getPermission().getStickyBit();
}
@Override
public void setPinning(LocalFileSystem localFS) throws IOException {
File f = getBlockFile();
Path p = new Path(f.getAbsolutePath());
FsPermission oldPermission = localFS.getFileStatus(
new Path(f.getAbsolutePath())).getPermission();
//sticky bit is used for pinning purpose
FsPermission permission = new FsPermission(oldPermission.getUserAction(),
oldPermission.getGroupAction(), oldPermission.getOtherAction(), true);
localFS.setPermission(p, permission);
}
@Override
public void bumpReplicaGS(long newGS) throws IOException {
long oldGS = getGenerationStamp();
File oldmeta = getMetaFile();
setGenerationStamp(newGS);
File newmeta = getMetaFile();
// rename meta file to new GS
if (LOG.isDebugEnabled()) {
LOG.debug("Renaming " + oldmeta + " to " + newmeta);
}
try {
// calling renameMeta on the ReplicaInfo doesn't work here
NativeIO.renameTo(oldmeta, newmeta);
} catch (IOException e) {
setGenerationStamp(oldGS); // restore old GS
throw new IOException("Block " + this + " reopen failed. " +
" Unable to move meta file " + oldmeta +
" to " + newmeta, e);
}
}
@Override
public void truncateBlock(long newLength) throws IOException {
truncateBlock(getBlockFile(), getMetaFile(), getNumBytes(), newLength);
}
@Override
public int compareWith(ScanInfo info) {
return info.getBlockFile().compareTo(getBlockFile());
}
static public void truncateBlock(File blockFile, File metaFile,
long oldlen, long newlen) throws IOException {
LOG.info("truncateBlock: blockFile=" + blockFile
+ ", metaFile=" + metaFile
+ ", oldlen=" + oldlen
+ ", newlen=" + newlen);
if (newlen == oldlen) {
return;
}
if (newlen > oldlen) {
throw new IOException("Cannot truncate block to from oldlen (=" + oldlen
+ ") to newlen (=" + newlen + ")");
}
DataChecksum dcs = BlockMetadataHeader.readHeader(metaFile).getChecksum();
int checksumsize = dcs.getChecksumSize();
int bpc = dcs.getBytesPerChecksum();
long n = (newlen - 1)/bpc + 1;
long newmetalen = BlockMetadataHeader.getHeaderSize() + n*checksumsize;
long lastchunkoffset = (n - 1)*bpc;
int lastchunksize = (int)(newlen - lastchunkoffset);
byte[] b = new byte[Math.max(lastchunksize, checksumsize)];
RandomAccessFile blockRAF = new RandomAccessFile(blockFile, "rw");
try {
//truncate blockFile
blockRAF.setLength(newlen);
//read last chunk
blockRAF.seek(lastchunkoffset);
blockRAF.readFully(b, 0, lastchunksize);
} finally {
blockRAF.close();
}
//compute checksum
dcs.update(b, 0, lastchunksize);
dcs.writeValue(b, 0, false);
//update metaFile
RandomAccessFile metaRAF = new RandomAccessFile(metaFile, "rw");
try {
metaRAF.setLength(newmetalen);
metaRAF.seek(newmetalen - checksumsize);
metaRAF.write(b, 0, checksumsize);
} finally {
metaRAF.close();
}
}
@Override
public void copyMetadata(URI destination) throws IOException {
//for local replicas, we assume the destination URI is file
Storage.nativeCopyFileUnbuffered(getMetaFile(),
new File(destination), true);
}
@Override
public void copyBlockdata(URI destination) throws IOException {
//for local replicas, we assume the destination URI is file
Storage.nativeCopyFileUnbuffered(getBlockFile(),
new File(destination), true);
}
}

417
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/LocalReplicaInPipeline.java Normal file
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@ -0,0 +1,417 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.nativeio.NativeIO;
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.StringUtils;
/**
* This class defines a replica in a pipeline, which
* includes a persistent replica being written to by a dfs client or
* a temporary replica being replicated by a source datanode or
* being copied for the balancing purpose.
*
* The base class implements a temporary replica
*/
public class LocalReplicaInPipeline extends LocalReplica
implements ReplicaInPipeline {
private long bytesAcked;
private long bytesOnDisk;
private byte[] lastChecksum;
private AtomicReference<Thread> writer = new AtomicReference<Thread>();
/**
* Bytes reserved for this replica on the containing volume.
* Based off difference between the estimated maximum block length and
* the bytes already written to this block.
*/
private long bytesReserved;
private final long originalBytesReserved;
/**
* Constructor for a zero length replica.
* @param blockId block id
* @param genStamp replica generation stamp
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param bytesToReserve disk space to reserve for this replica, based on
* the estimated maximum block length.
*/
public LocalReplicaInPipeline(long blockId, long genStamp,
FsVolumeSpi vol, File dir, long bytesToReserve) {
this(blockId, 0L, genStamp, vol, dir, Thread.currentThread(),
bytesToReserve);
}
/**
* Constructor
* @param block a block
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param writer a thread that is writing to this replica
*/
LocalReplicaInPipeline(Block block,
FsVolumeSpi vol, File dir, Thread writer) {
this(block.getBlockId(), block.getNumBytes(), block.getGenerationStamp(),
vol, dir, writer, 0L);
}
/**
* Constructor
* @param blockId block id
* @param len replica length
* @param genStamp replica generation stamp
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param writer a thread that is writing to this replica
* @param bytesToReserve disk space to reserve for this replica, based on
* the estimated maximum block length.
*/
LocalReplicaInPipeline(long blockId, long len, long genStamp,
FsVolumeSpi vol, File dir, Thread writer, long bytesToReserve) {
super(blockId, len, genStamp, vol, dir);
this.bytesAcked = len;
this.bytesOnDisk = len;
this.writer.set(writer);
this.bytesReserved = bytesToReserve;
this.originalBytesReserved = bytesToReserve;
}
/**
* Copy constructor.
* @param from where to copy from
*/
public LocalReplicaInPipeline(LocalReplicaInPipeline from) {
super(from);
this.bytesAcked = from.getBytesAcked();
this.bytesOnDisk = from.getBytesOnDisk();
this.writer.set(from.writer.get());
this.bytesReserved = from.bytesReserved;
this.originalBytesReserved = from.originalBytesReserved;
}
@Override
public long getVisibleLength() {
return -1;
}
@Override //ReplicaInfo
public ReplicaState getState() {
return ReplicaState.TEMPORARY;
}
@Override // ReplicaInPipeline
public long getBytesAcked() {
return bytesAcked;
}
@Override // ReplicaInPipeline
public void setBytesAcked(long bytesAcked) {
long newBytesAcked = bytesAcked - this.bytesAcked;
this.bytesAcked = bytesAcked;
// Once bytes are ACK'ed we can release equivalent space from the
// volume's reservedForRbw count. We could have released it as soon
// as the write-to-disk completed but that would be inefficient.
getVolume().releaseReservedSpace(newBytesAcked);
bytesReserved -= newBytesAcked;
}
@Override // ReplicaInPipeline
public long getBytesOnDisk() {
return bytesOnDisk;
}
@Override
public long getBytesReserved() {
return bytesReserved;
}
@Override
public long getOriginalBytesReserved() {
return originalBytesReserved;
}
@Override // ReplicaInPipeline
public void releaseAllBytesReserved() {
getVolume().releaseReservedSpace(bytesReserved);
getVolume().releaseLockedMemory(bytesReserved);
bytesReserved = 0;
}
@Override // ReplicaInPipeline
public synchronized void setLastChecksumAndDataLen(long dataLength,
byte[] checksum) {
this.bytesOnDisk = dataLength;
this.lastChecksum = checksum;
}
@Override // ReplicaInPipeline
public synchronized ChunkChecksum getLastChecksumAndDataLen() {
return new ChunkChecksum(getBytesOnDisk(), lastChecksum);
}
@Override // ReplicaInPipeline
public void setWriter(Thread writer) {
this.writer.set(writer);
}
@Override
public void interruptThread() {
Thread thread = writer.get();
if (thread != null && thread != Thread.currentThread()
&& thread.isAlive()) {
thread.interrupt();
}
}
@Override // Object
public boolean equals(Object o) {
return super.equals(o);
}
/**
* Attempt to set the writer to a new value.
*/
@Override // ReplicaInPipeline
public boolean attemptToSetWriter(Thread prevWriter, Thread newWriter) {
return writer.compareAndSet(prevWriter, newWriter);
}
/**
* Interrupt the writing thread and wait until it dies.
* @throws IOException the waiting is interrupted
*/
@Override // ReplicaInPipeline
public void stopWriter(long xceiverStopTimeout) throws IOException {
while (true) {
Thread thread = writer.get();
if ((thread == null) || (thread == Thread.currentThread()) ||
(!thread.isAlive())) {
if (writer.compareAndSet(thread, null)) {
return; // Done
}
// The writer changed. Go back to the start of the loop and attempt to
// stop the new writer.
continue;
}
thread.interrupt();
try {
thread.join(xceiverStopTimeout);
if (thread.isAlive()) {
// Our thread join timed out.
final String msg = "Join on writer thread " + thread + " timed out";
DataNode.LOG.warn(msg + "\n" + StringUtils.getStackTrace(thread));
throw new IOException(msg);
}
} catch (InterruptedException e) {
throw new IOException("Waiting for writer thread is interrupted.");
}
}
}
@Override // Object
public int hashCode() {
return super.hashCode();
}
@Override // ReplicaInPipeline
public ReplicaOutputStreams createStreams(boolean isCreate,
DataChecksum requestedChecksum) throws IOException {
File blockFile = getBlockFile();
File metaFile = getMetaFile();
if (DataNode.LOG.isDebugEnabled()) {
DataNode.LOG.debug("writeTo blockfile is " + blockFile +
" of size " + blockFile.length());
DataNode.LOG.debug("writeTo metafile is " + metaFile +
" of size " + metaFile.length());
}
long blockDiskSize = 0L;
long crcDiskSize = 0L;
// the checksum that should actually be used -- this
// may differ from requestedChecksum for appends.
final DataChecksum checksum;
RandomAccessFile metaRAF = new RandomAccessFile(metaFile, "rw");
if (!isCreate) {
// For append or recovery, we must enforce the existing checksum.
// Also, verify that the file has correct lengths, etc.
boolean checkedMeta = false;
try {
BlockMetadataHeader header = BlockMetadataHeader.readHeader(metaRAF);
checksum = header.getChecksum();
if (checksum.getBytesPerChecksum() !=
requestedChecksum.getBytesPerChecksum()) {
throw new IOException("Client requested checksum " +
requestedChecksum + " when appending to an existing block " +
"with different chunk size: " + checksum);
}
int bytesPerChunk = checksum.getBytesPerChecksum();
int checksumSize = checksum.getChecksumSize();
blockDiskSize = bytesOnDisk;
crcDiskSize = BlockMetadataHeader.getHeaderSize() +
(blockDiskSize+bytesPerChunk-1)/bytesPerChunk*checksumSize;
if (blockDiskSize > 0 &&
(blockDiskSize > blockFile.length() ||
crcDiskSize>metaFile.length())) {
throw new IOException("Corrupted block: " + this);
}
checkedMeta = true;
} finally {
if (!checkedMeta) {
// clean up in case of exceptions.
IOUtils.closeStream(metaRAF);
}
}
} else {
// for create, we can use the requested checksum
checksum = requestedChecksum;
}
FileOutputStream blockOut = null;
FileOutputStream crcOut = null;
try {
blockOut = new FileOutputStream(
new RandomAccessFile(blockFile, "rw").getFD());
crcOut = new FileOutputStream(metaRAF.getFD());
if (!isCreate) {
blockOut.getChannel().position(blockDiskSize);
crcOut.getChannel().position(crcDiskSize);
}
return new ReplicaOutputStreams(blockOut, crcOut, checksum,
getVolume().isTransientStorage());
} catch (IOException e) {
IOUtils.closeStream(blockOut);
IOUtils.closeStream(metaRAF);
throw e;
}
}
@Override
public OutputStream createRestartMetaStream() throws IOException {
File blockFile = getBlockFile();
File restartMeta = new File(blockFile.getParent() +
File.pathSeparator + "." + blockFile.getName() + ".restart");
if (restartMeta.exists() && !restartMeta.delete()) {
DataNode.LOG.warn("Failed to delete restart meta file: " +
restartMeta.getPath());
}
return new FileOutputStream(restartMeta);
}
@Override
public String toString() {
return super.toString()
+ "\n bytesAcked=" + bytesAcked
+ "\n bytesOnDisk=" + bytesOnDisk;
}
@Override
public ReplicaInfo getOriginalReplica() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support getOriginalReplica");
}
@Override
public long getRecoveryID() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support getRecoveryID");
}
@Override
public void setRecoveryID(long recoveryId) {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support setRecoveryID");
}
@Override
public ReplicaRecoveryInfo createInfo(){
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support createInfo");
}
public void moveReplicaFrom(ReplicaInfo oldReplicaInfo, File newBlkFile)
throws IOException {
if (!(oldReplicaInfo instanceof LocalReplica)) {
throw new IOException("The source replica with blk id "
+ oldReplicaInfo.getBlockId()
+ " should be derived from LocalReplica");
}
LocalReplica localReplica = (LocalReplica) oldReplicaInfo;
File oldmeta = localReplica.getMetaFile();
File newmeta = getMetaFile();
if (LOG.isDebugEnabled()) {
LOG.debug("Renaming " + oldmeta + " to " + newmeta);
}
try {
NativeIO.renameTo(oldmeta, newmeta);
} catch (IOException e) {
throw new IOException("Block " + oldReplicaInfo + " reopen failed. " +
" Unable to move meta file " + oldmeta +
" to rbw dir " + newmeta, e);
}
File blkfile = localReplica.getBlockFile();
if (LOG.isDebugEnabled()) {
LOG.debug("Renaming " + blkfile + " to " + newBlkFile
+ ", file length=" + blkfile.length());
}
try {
NativeIO.renameTo(blkfile, newBlkFile);
} catch (IOException e) {
try {
NativeIO.renameTo(newmeta, oldmeta);
} catch (IOException ex) {
LOG.warn("Cannot move meta file " + newmeta +
"back to the finalized directory " + oldmeta, ex);
}
throw new IOException("Block " + oldReplicaInfo + " reopen failed. " +
" Unable to move block file " + blkfile +
" to rbw dir " + newBlkFile, e);
}
}
@Override // ReplicaInPipeline
public ReplicaInfo getReplicaInfo() {
return this;
}
}

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaBeingWritten.java
View File

@ -27,9 +27,9 @@
* Those are the replicas that
* are created in a pipeline initiated by a dfs client.
*/
public class ReplicaBeingWritten extends ReplicaInPipeline {
public class ReplicaBeingWritten extends LocalReplicaInPipeline {
/**
* Constructor for a zero length replica
* Constructor for a zero length replica.
* @param blockId block id
* @param genStamp replica generation stamp
* @param vol volume where replica is located
@ -37,25 +37,25 @@ public class ReplicaBeingWritten extends ReplicaInPipeline {
* @param bytesToReserve disk space to reserve for this replica, based on
* the estimated maximum block length.
*/
public ReplicaBeingWritten(long blockId, long genStamp,
public ReplicaBeingWritten(long blockId, long genStamp,
FsVolumeSpi vol, File dir, long bytesToReserve) {
super(blockId, genStamp, vol, dir, bytesToReserve);
}
/**
* Constructor
* Constructor.
* @param block a block
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param writer a thread that is writing to this replica
*/
public ReplicaBeingWritten(Block block,
public ReplicaBeingWritten(Block block,
FsVolumeSpi vol, File dir, Thread writer) {
super( block, vol, dir, writer);
super(block, vol, dir, writer);
}
/**
* Constructor
* Constructor.
* @param blockId block id
* @param len replica length
* @param genStamp replica generation stamp

252
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaBuilder.java Normal file
View File

@ -0,0 +1,252 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
/**
* This class is to be used as a builder for {@link ReplicaInfo} objects.
* The state of the replica is used to determine which object is instantiated.
*/
public class ReplicaBuilder {
private ReplicaState state;
private long blockId;
private long genStamp;
private long length;
private FsVolumeSpi volume;
private File directoryUsed;
private long bytesToReserve;
private Thread writer;
private long recoveryId;
private Block block;
private ReplicaInfo fromReplica;
public ReplicaBuilder(ReplicaState state) {
volume = null;
writer = null;
block = null;
length = -1;
this.state = state;
}
public ReplicaBuilder setState(ReplicaState state) {
this.state = state;
return this;
}
public ReplicaBuilder setBlockId(long blockId) {
this.blockId = blockId;
return this;
}
public ReplicaBuilder setGenerationStamp(long genStamp) {
this.genStamp = genStamp;
return this;
}
public ReplicaBuilder setLength(long length) {
this.length = length;
return this;
}
public ReplicaBuilder setFsVolume(FsVolumeSpi volume) {
this.volume = volume;
return this;
}
public ReplicaBuilder setDirectoryToUse(File dir) {
this.directoryUsed = dir;
return this;
}
public ReplicaBuilder setBytesToReserve(long bytesToReserve) {
this.bytesToReserve = bytesToReserve;
return this;
}
public ReplicaBuilder setWriterThread(Thread writer) {
this.writer = writer;
return this;
}
public ReplicaBuilder from(ReplicaInfo fromReplica) {
this.fromReplica = fromReplica;
return this;
}
public ReplicaBuilder setRecoveryId(long recoveryId) {
this.recoveryId = recoveryId;
return this;
}
public ReplicaBuilder setBlock(Block block) {
this.block = block;
return this;
}
public LocalReplicaInPipeline buildLocalReplicaInPipeline()
throws IllegalArgumentException {
LocalReplicaInPipeline info = null;
switch(state) {
case RBW:
info = buildRBW();
break;
case TEMPORARY:
info = buildTemporaryReplica();
break;
default:
throw new IllegalArgumentException("Unknown replica state " + state);
}
return info;
}
private LocalReplicaInPipeline buildRBW() throws IllegalArgumentException {
if (null != fromReplica && fromReplica.getState() == ReplicaState.RBW) {
return new ReplicaBeingWritten((ReplicaBeingWritten) fromReplica);
} else if (null != fromReplica) {
throw new IllegalArgumentException("Incompatible fromReplica "
+ "state: " + fromReplica.getState());
} else {
if (null != block) {
if (null == writer) {
throw new IllegalArgumentException("A valid writer is "
+ "required for constructing a RBW from block "
+ block.getBlockId());
}
return new ReplicaBeingWritten(block, volume, directoryUsed, writer);
} else {
if (length != -1) {
return new ReplicaBeingWritten(blockId, length, genStamp,
volume, directoryUsed, writer, bytesToReserve);
} else {
return new ReplicaBeingWritten(blockId, genStamp, volume,
directoryUsed, bytesToReserve);
}
}
}
}
private LocalReplicaInPipeline buildTemporaryReplica()
throws IllegalArgumentException {
if (null != fromReplica &&
fromReplica.getState() == ReplicaState.TEMPORARY) {
return new LocalReplicaInPipeline((LocalReplicaInPipeline) fromReplica);
} else if (null != fromReplica) {
throw new IllegalArgumentException("Incompatible fromReplica "
+ "state: " + fromReplica.getState());
} else {
if (null != block) {
if (null == writer) {
throw new IllegalArgumentException("A valid writer is "
+ "required for constructing a Replica from block "
+ block.getBlockId());
}
return new LocalReplicaInPipeline(block, volume, directoryUsed,
writer);
} else {
if (length != -1) {
return new LocalReplicaInPipeline(blockId, length, genStamp,
volume, directoryUsed, writer, bytesToReserve);
} else {
return new LocalReplicaInPipeline(blockId, genStamp, volume,
directoryUsed, bytesToReserve);
}
}
}
}
private ReplicaInfo buildFinalizedReplica() throws IllegalArgumentException {
if (null != fromReplica &&
fromReplica.getState() == ReplicaState.FINALIZED) {
return new FinalizedReplica((FinalizedReplica)fromReplica);
} else if (null != this.fromReplica) {
throw new IllegalArgumentException("Incompatible fromReplica "
+ "state: " + fromReplica.getState());
} else {
if (null != block) {
return new FinalizedReplica(block, volume, directoryUsed);
} else {
return new FinalizedReplica(blockId, length, genStamp, volume,
directoryUsed);
}
}
}
private ReplicaInfo buildRWR() throws IllegalArgumentException {
if (null != fromReplica && fromReplica.getState() == ReplicaState.RWR) {
return new ReplicaWaitingToBeRecovered(
(ReplicaWaitingToBeRecovered) fromReplica);
} else if (null != fromReplica){
throw new IllegalArgumentException("Incompatible fromReplica "
+ "state: " + fromReplica.getState());
} else {
if (null != block) {
return new ReplicaWaitingToBeRecovered(block, volume, directoryUsed);
} else {
return new ReplicaWaitingToBeRecovered(blockId, length, genStamp,
volume, directoryUsed);
}
}
}
private ReplicaInfo buildRUR() throws IllegalArgumentException {
if (null == fromReplica) {
throw new IllegalArgumentException(
"Missing a valid replica to recover from");
}
if (null != writer || null != block) {
throw new IllegalArgumentException("Invalid state for "
+ "recovering from replica with blk id "
+ fromReplica.getBlockId());
}
if (fromReplica.getState() == ReplicaState.RUR) {
return new ReplicaUnderRecovery((ReplicaUnderRecovery) fromReplica);
} else {
return new ReplicaUnderRecovery(fromReplica, recoveryId);
}
}
public ReplicaInfo build() throws IllegalArgumentException {
ReplicaInfo info = null;
switch(this.state) {
case FINALIZED:
info = buildFinalizedReplica();
break;
case RWR:
info = buildRWR();
break;
case RUR:
info = buildRUR();
break;
case RBW:
case TEMPORARY:
info = buildLocalReplicaInPipeline();
break;
default:
throw new IllegalArgumentException("Unknown replica state " + state);
}
return info;
}
}

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaHandler.java
View File

@ -27,11 +27,11 @@
* the fs volume where this replica is located.
*/
public class ReplicaHandler implements Closeable {
private final ReplicaInPipelineInterface replica;
private final ReplicaInPipeline replica;
private final FsVolumeReference volumeReference;
public ReplicaHandler(
ReplicaInPipelineInterface replica, FsVolumeReference reference) {
ReplicaInPipeline replica, FsVolumeReference reference) {
this.replica = replica;
this.volumeReference = reference;
}
@ -43,7 +43,7 @@ public void close() throws IOException {
}
}
public ReplicaInPipelineInterface getReplica() {
public ReplicaInPipeline getReplica() {
return replica;
}
}

328
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInPipeline.java
View File

@ -17,313 +17,91 @@
*/
package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.StringUtils;
/**
* This class defines a replica in a pipeline, which
* includes a persistent replica being written to by a dfs client or
* a temporary replica being replicated by a source datanode or
* being copied for the balancing purpose.
*
* The base class implements a temporary replica
* This defines the interface of a replica in Pipeline that's being written to
*/
public class ReplicaInPipeline extends ReplicaInfo
implements ReplicaInPipelineInterface {
private long bytesAcked;
private long bytesOnDisk;
private byte[] lastChecksum;
private AtomicReference<Thread> writer = new AtomicReference<Thread>();
public interface ReplicaInPipeline extends Replica {
/**
* Set the number of bytes received
* @param bytesReceived number of bytes received
*/
void setNumBytes(long bytesReceived);
/**
* Bytes reserved for this replica on the containing volume.
* Based off difference between the estimated maximum block length and
* the bytes already written to this block.
* Get the number of bytes acked
* @return the number of bytes acked
*/
private long bytesReserved;
private final long originalBytesReserved;
long getBytesAcked();
/**
* Constructor for a zero length replica
* @param blockId block id
* @param genStamp replica generation stamp
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param bytesToReserve disk space to reserve for this replica, based on
* the estimated maximum block length.
* Set the number bytes that have acked
* @param bytesAcked number bytes acked
*/
public ReplicaInPipeline(long blockId, long genStamp,
FsVolumeSpi vol, File dir, long bytesToReserve) {
this(blockId, 0L, genStamp, vol, dir, Thread.currentThread(), bytesToReserve);
}
void setBytesAcked(long bytesAcked);
/**
* Constructor
* @param block a block
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param writer a thread that is writing to this replica
* Release any disk space reserved for this replica.
*/
ReplicaInPipeline(Block block,
FsVolumeSpi vol, File dir, Thread writer) {
this( block.getBlockId(), block.getNumBytes(), block.getGenerationStamp(),
vol, dir, writer, 0L);
}
public void releaseAllBytesReserved();
/**
* Constructor
* @param blockId block id
* @param len replica length
* @param genStamp replica generation stamp
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
* @param writer a thread that is writing to this replica
* @param bytesToReserve disk space to reserve for this replica, based on
* the estimated maximum block length.
* store the checksum for the last chunk along with the data length
* @param dataLength number of bytes on disk
* @param lastChecksum - checksum bytes for the last chunk
*/
ReplicaInPipeline(long blockId, long len, long genStamp,
FsVolumeSpi vol, File dir, Thread writer, long bytesToReserve) {
super( blockId, len, genStamp, vol, dir);
this.bytesAcked = len;
this.bytesOnDisk = len;
this.writer.set(writer);
this.bytesReserved = bytesToReserve;
this.originalBytesReserved = bytesToReserve;
}
public void setLastChecksumAndDataLen(long dataLength, byte[] lastChecksum);
/**
* gets the last chunk checksum and the length of the block corresponding
* to that checksum
*/
public ChunkChecksum getLastChecksumAndDataLen();
/**
* Create output streams for writing to this replica,
* one for block file and one for CRC file
*
* @param isCreate if it is for creation
* @param requestedChecksum the checksum the writer would prefer to use
* @return output streams for writing
* @throws IOException if any error occurs
*/
public ReplicaOutputStreams createStreams(boolean isCreate,
DataChecksum requestedChecksum) throws IOException;
/**
* Copy constructor.
* @param from where to copy from
* Create an output stream to write restart metadata in case of datanode
* shutting down for quick restart.
*
* @return output stream for writing.
* @throws IOException if any error occurs
*/
public ReplicaInPipeline(ReplicaInPipeline from) {
super(from);
this.bytesAcked = from.getBytesAcked();
this.bytesOnDisk = from.getBytesOnDisk();
this.writer.set(from.writer.get());
this.bytesReserved = from.bytesReserved;
this.originalBytesReserved = from.originalBytesReserved;
}
@Override
public long getVisibleLength() {
return -1;
}
public OutputStream createRestartMetaStream() throws IOException;
@Override //ReplicaInfo
public ReplicaState getState() {
return ReplicaState.TEMPORARY;
}
ReplicaInfo getReplicaInfo();
@Override // ReplicaInPipelineInterface
public long getBytesAcked() {
return bytesAcked;
}
/**
* Set the thread that is writing to this replica
* @param writer a thread writing to this replica
*/
void setWriter(Thread writer);
@Override // ReplicaInPipelineInterface
public void setBytesAcked(long bytesAcked) {
long newBytesAcked = bytesAcked - this.bytesAcked;
this.bytesAcked = bytesAcked;
// Once bytes are ACK'ed we can release equivalent space from the
// volume's reservedForRbw count. We could have released it as soon
// as the write-to-disk completed but that would be inefficient.
getVolume().releaseReservedSpace(newBytesAcked);
bytesReserved -= newBytesAcked;
}
@Override // ReplicaInPipelineInterface
public long getBytesOnDisk() {
return bytesOnDisk;
}
@Override
public long getBytesReserved() {
return bytesReserved;
}
@Override
public long getOriginalBytesReserved() {
return originalBytesReserved;
}
@Override
public void releaseAllBytesReserved() { // ReplicaInPipelineInterface
getVolume().releaseReservedSpace(bytesReserved);
getVolume().releaseLockedMemory(bytesReserved);
bytesReserved = 0;
}
@Override // ReplicaInPipelineInterface
public synchronized void setLastChecksumAndDataLen(long dataLength, byte[] lastChecksum) {
this.bytesOnDisk = dataLength;
this.lastChecksum = lastChecksum;
}
@Override // ReplicaInPipelineInterface
public synchronized ChunkChecksum getLastChecksumAndDataLen() {
return new ChunkChecksum(getBytesOnDisk(), lastChecksum);
}
public void interruptThread() {
Thread thread = writer.get();
if (thread != null && thread != Thread.currentThread()
&& thread.isAlive()) {
thread.interrupt();
}
}
@Override // Object
public boolean equals(Object o) {
return super.equals(o);
}
void interruptThread();
/**
* Attempt to set the writer to a new value.
*/
public boolean attemptToSetWriter(Thread prevWriter, Thread newWriter) {
return writer.compareAndSet(prevWriter, newWriter);
}
boolean attemptToSetWriter(Thread prevWriter, Thread newWriter);
/**
* Interrupt the writing thread and wait until it dies
* Interrupt the writing thread and wait until it dies.
* @throws IOException the waiting is interrupted
*/
public void stopWriter(long xceiverStopTimeout) throws IOException {
while (true) {
Thread thread = writer.get();
if ((thread == null) || (thread == Thread.currentThread()) ||
(!thread.isAlive())) {
if (writer.compareAndSet(thread, null) == true) {
return; // Done
}
// The writer changed. Go back to the start of the loop and attempt to
// stop the new writer.
continue;
}
thread.interrupt();
try {
thread.join(xceiverStopTimeout);
if (thread.isAlive()) {
// Our thread join timed out.
final String msg = "Join on writer thread " + thread + " timed out";
DataNode.LOG.warn(msg + "\n" + StringUtils.getStackTrace(thread));
throw new IOException(msg);
}
} catch (InterruptedException e) {
throw new IOException("Waiting for writer thread is interrupted.");
}
}
}
@Override // Object
public int hashCode() {
return super.hashCode();
}
@Override // ReplicaInPipelineInterface
public ReplicaOutputStreams createStreams(boolean isCreate,
DataChecksum requestedChecksum) throws IOException {
File blockFile = getBlockFile();
File metaFile = getMetaFile();
if (DataNode.LOG.isDebugEnabled()) {
DataNode.LOG.debug("writeTo blockfile is " + blockFile +
" of size " + blockFile.length());
DataNode.LOG.debug("writeTo metafile is " + metaFile +
" of size " + metaFile.length());
}
long blockDiskSize = 0L;
long crcDiskSize = 0L;
// the checksum that should actually be used -- this
// may differ from requestedChecksum for appends.
final DataChecksum checksum;
RandomAccessFile metaRAF = new RandomAccessFile(metaFile, "rw");
if (!isCreate) {
// For append or recovery, we must enforce the existing checksum.
// Also, verify that the file has correct lengths, etc.
boolean checkedMeta = false;
try {
BlockMetadataHeader header = BlockMetadataHeader.readHeader(metaRAF);
checksum = header.getChecksum();
if (checksum.getBytesPerChecksum() !=
requestedChecksum.getBytesPerChecksum()) {
throw new IOException("Client requested checksum " +
requestedChecksum + " when appending to an existing block " +
"with different chunk size: " + checksum);
}
int bytesPerChunk = checksum.getBytesPerChecksum();
int checksumSize = checksum.getChecksumSize();
blockDiskSize = bytesOnDisk;
crcDiskSize = BlockMetadataHeader.getHeaderSize() +
(blockDiskSize+bytesPerChunk-1)/bytesPerChunk*checksumSize;
if (blockDiskSize>0 &&
(blockDiskSize>blockFile.length() || crcDiskSize>metaFile.length())) {
throw new IOException("Corrupted block: " + this);
}
checkedMeta = true;
} finally {
if (!checkedMeta) {
// clean up in case of exceptions.
IOUtils.closeStream(metaRAF);
}
}
} else {
// for create, we can use the requested checksum
checksum = requestedChecksum;
}
FileOutputStream blockOut = null;
FileOutputStream crcOut = null;
try {
blockOut = new FileOutputStream(
new RandomAccessFile( blockFile, "rw" ).getFD() );
crcOut = new FileOutputStream(metaRAF.getFD() );
if (!isCreate) {
blockOut.getChannel().position(blockDiskSize);
crcOut.getChannel().position(crcDiskSize);
}
return new ReplicaOutputStreams(blockOut, crcOut, checksum,
getVolume().isTransientStorage());
} catch (IOException e) {
IOUtils.closeStream(blockOut);
IOUtils.closeStream(metaRAF);
throw e;
}
}
@Override
public OutputStream createRestartMetaStream() throws IOException {
File blockFile = getBlockFile();
File restartMeta = new File(blockFile.getParent() +
File.pathSeparator + "." + blockFile.getName() + ".restart");
if (restartMeta.exists() && !restartMeta.delete()) {
DataNode.LOG.warn("Failed to delete restart meta file: " +
restartMeta.getPath());
}
return new FileOutputStream(restartMeta);
}
@Override
public String toString() {
return super.toString()
+ "\n bytesAcked=" + bytesAcked
+ "\n bytesOnDisk=" + bytesOnDisk;
}
void stopWriter(long xceiverStopTimeout) throws IOException;
}

86
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInPipelineInterface.java
View File

@ -1,86 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.datanode;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams;
import org.apache.hadoop.util.DataChecksum;
/**
* This defines the interface of a replica in Pipeline that's being written to
*/
public interface ReplicaInPipelineInterface extends Replica {
/**
* Set the number of bytes received
* @param bytesReceived number of bytes received
*/
void setNumBytes(long bytesReceived);
/**
* Get the number of bytes acked
* @return the number of bytes acked
*/
long getBytesAcked();
/**
* Set the number bytes that have acked
* @param bytesAcked number bytes acked
*/
void setBytesAcked(long bytesAcked);
/**
* Release any disk space reserved for this replica.
*/
public void releaseAllBytesReserved();
/**
* store the checksum for the last chunk along with the data length
* @param dataLength number of bytes on disk
* @param lastChecksum - checksum bytes for the last chunk
*/
public void setLastChecksumAndDataLen(long dataLength, byte[] lastChecksum);
/**
* gets the last chunk checksum and the length of the block corresponding
* to that checksum
*/
public ChunkChecksum getLastChecksumAndDataLen();
/**
* Create output streams for writing to this replica,
* one for block file and one for CRC file
*
* @param isCreate if it is for creation
* @param requestedChecksum the checksum the writer would prefer to use
* @return output streams for writing
* @throws IOException if any error occurs
*/
public ReplicaOutputStreams createStreams(boolean isCreate,
DataChecksum requestedChecksum) throws IOException;
/**
* Create an output stream to write restart metadata in case of datanode
* shutting down for quick restart.
*
* @return output stream for writing.
* @throws IOException if any error occurs
*/
public OutputStream createRestartMetaStream() throws IOException;
}

390
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInfo.java
View File

@ -17,23 +17,20 @@
*/
package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.fs.HardLink;
import org.apache.hadoop.fs.LocalFileSystem;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.ScanInfo;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.LengthInputStream;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
import org.apache.hadoop.util.LightWeightResizableGSet;
import com.google.common.annotations.VisibleForTesting;
/**
* This class is used by datanodes to maintain meta data of its replicas.
* It provides a general interface for meta information of a replica.
@ -42,81 +39,26 @@
abstract public class ReplicaInfo extends Block
implements Replica, LightWeightResizableGSet.LinkedElement {
/** For implementing {@link LightWeightResizableGSet.LinkedElement} interface */
/** For implementing {@link LightWeightResizableGSet.LinkedElement}. */
private LightWeightResizableGSet.LinkedElement next;
/** volume where the replica belongs */
/** volume where the replica belongs. */
private FsVolumeSpi volume;
/** directory where block & meta files belong */
/**
* Base directory containing numerically-identified sub directories and
* possibly blocks.
*/
private File baseDir;
/**
* Whether or not this replica's parent directory includes subdirs, in which
* case we can generate them based on the replica's block ID
*/
private boolean hasSubdirs;
private static final Map<String, File> internedBaseDirs = new HashMap<String, File>();
/**
* Constructor
* @param block a block
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
ReplicaInfo(Block block, FsVolumeSpi vol, File dir) {
this(block.getBlockId(), block.getNumBytes(),
block.getGenerationStamp(), vol, dir);
}
/**
* Constructor
* @param blockId block id
* @param len replica length
* @param genStamp replica generation stamp
* @param vol volume where replica is located
* @param dir directory path where block and meta files are located
*/
ReplicaInfo(long blockId, long len, long genStamp,
FsVolumeSpi vol, File dir) {
* Constructor
* @param vol volume where replica is located
* @param blockId block id
* @param len replica length
* @param genStamp replica generation stamp
*/
ReplicaInfo(FsVolumeSpi vol, long blockId, long len, long genStamp) {
super(blockId, len, genStamp);
this.volume = vol;
setDirInternal(dir);
}
/**
* Copy constructor.
* @param from where to copy from
*/
ReplicaInfo(ReplicaInfo from) {
this(from, from.getVolume(), from.getDir());
}
/**
* Get the full path of this replica's data file
* @return the full path of this replica's data file
*/
public File getBlockFile() {
return new File(getDir(), getBlockName());
}
/**
* Get the full path of this replica's meta file
* @return the full path of this replica's meta file
*/
public File getMetaFile() {
return new File(getDir(),
DatanodeUtil.getMetaName(getBlockName(), getGenerationStamp()));
}
/**
* Get the volume where this replica is located on disk
* Get the volume where this replica is located on disk.
* @return the volume where this replica is located on disk
*/
public FsVolumeSpi getVolume() {
@ -124,7 +66,7 @@ public FsVolumeSpi getVolume() {
}
/**
* Set the volume where this replica is located on disk
* Set the volume where this replica is located on disk.
*/
void setVolume(FsVolumeSpi vol) {
this.volume = vol;
@ -137,67 +79,6 @@ void setVolume(FsVolumeSpi vol) {
public String getStorageUuid() {
return volume.getStorageID();
}
/**
* Return the parent directory path where this replica is located
* @return the parent directory path where this replica is located
*/
File getDir() {
return hasSubdirs ? DatanodeUtil.idToBlockDir(baseDir,
getBlockId()) : baseDir;
}
/**
* Set the parent directory where this replica is located
* @param dir the parent directory where the replica is located
*/
public void setDir(File dir) {
setDirInternal(dir);
}
private void setDirInternal(File dir) {
if (dir == null) {
baseDir = null;
return;
}
ReplicaDirInfo dirInfo = parseBaseDir(dir);
this.hasSubdirs = dirInfo.hasSubidrs;
synchronized (internedBaseDirs) {
if (!internedBaseDirs.containsKey(dirInfo.baseDirPath)) {
// Create a new String path of this file and make a brand new File object
// to guarantee we drop the reference to the underlying char[] storage.
File baseDir = new File(dirInfo.baseDirPath);
internedBaseDirs.put(dirInfo.baseDirPath, baseDir);
}
this.baseDir = internedBaseDirs.get(dirInfo.baseDirPath);
}
}
@VisibleForTesting
public static class ReplicaDirInfo {
public String baseDirPath;
public boolean hasSubidrs;
public ReplicaDirInfo (String baseDirPath, boolean hasSubidrs) {
this.baseDirPath = baseDirPath;
this.hasSubidrs = hasSubidrs;
}
}
@VisibleForTesting
public static ReplicaDirInfo parseBaseDir(File dir) {
File currentDir = dir;
boolean hasSubdirs = false;
while (currentDir.getName().startsWith(DataStorage.BLOCK_SUBDIR_PREFIX)) {
hasSubdirs = true;
currentDir = currentDir.getParentFile();
}
return new ReplicaDirInfo(currentDir.getAbsolutePath(), hasSubdirs);
}
/**
* Number of bytes reserved for this replica on disk.
@ -206,6 +87,166 @@ public long getBytesReserved() {
return 0;
}
/**
* Get the {@code URI} for where the data of this replica is stored.
* @return {@code URI} for the location of replica data.
*/
abstract public URI getBlockURI();
/**
* Returns an {@link InputStream} to the replica's data.
* @param seekOffset the offset at which the read is started from.
* @return the {@link InputStream} to read the replica data.
* @throws IOException if an error occurs in opening a stream to the data.
*/
abstract public InputStream getDataInputStream(long seekOffset)
throws IOException;
/**
* Returns an {@link OutputStream} to the replica's data.
* @param append indicates if the block should be opened for append.
* @return the {@link OutputStream} to write to the replica.
* @throws IOException if an error occurs in creating an {@link OutputStream}.
*/
abstract public OutputStream getDataOutputStream(boolean append)
throws IOException;
/**
* @return true if the replica's data exists.
*/
abstract public boolean blockDataExists();
/**
* Used to deletes the replica's block data.
*
* @return true if the replica's data is successfully deleted.
*/
abstract public boolean deleteBlockData();
/**
* @return the length of the block on storage.
*/
abstract public long getBlockDataLength();
/**
* Get the {@code URI} for where the metadata of this replica is stored.
*
* @return {@code URI} for the location of replica metadata.
*/
abstract public URI getMetadataURI();
/**
* Returns an {@link InputStream} to the replica's metadata.
* @param offset the offset at which the read is started from.
* @return the {@link LengthInputStream} to read the replica metadata.
* @throws IOException
*/
abstract public LengthInputStream getMetadataInputStream(long offset)
throws IOException;
/**
* Returns an {@link OutputStream} to the replica's metadata.
* @param append indicates if the block metadata should be opened for append.
* @return the {@link OutputStream} to write to the replica's metadata.
* @throws IOException if an error occurs in creating an {@link OutputStream}.
*/
abstract public OutputStream getMetadataOutputStream(boolean append)
throws IOException;
/**
* @return true if the replica's metadata exists.
*/
abstract public boolean metadataExists();
/**
* Used to deletes the replica's metadata.
*
* @return true if the replica's metadata is successfully deleted.
*/
abstract public boolean deleteMetadata();
/**
* @return the length of the metadata on storage.
*/
abstract public long getMetadataLength();
/**
* Rename the metadata {@link URI} to that referenced by {@code destURI}.
*
* @param destURI the target {@link URI}.
* @return true if the rename is successful.
* @throws IOException if an exception occurs in the rename.
*/
abstract public boolean renameMeta(URI destURI) throws IOException;
/**
* Rename the data {@link URI} to that referenced by {@code destURI}.
*
* @param destURI the target {@link URI}.
* @return true if the rename is successful.
* @throws IOException if an exception occurs in the rename.
*/
abstract public boolean renameData(URI destURI) throws IOException;
/**
* Update this replica with the {@link StorageLocation} found.
* @param replicaLocation the {@link StorageLocation} found for this replica.
*/
abstract public void updateWithReplica(StorageLocation replicaLocation);
/**
* Check whether the block was pinned.
* @param localFS the local filesystem to use.
* @return true if the block is pinned.
* @throws IOException
*/
abstract public boolean getPinning(LocalFileSystem localFS)
throws IOException;
/**
* Set a block to be pinned on this datanode so that it cannot be moved
* by Balancer/Mover.
*
* @param localFS the local filesystem to use.
* @throws IOException if there is an exception in the pinning.
*/
abstract public void setPinning(LocalFileSystem localFS) throws IOException;
/**
* Bump a replica's generation stamp to a new one.
* Its on-disk meta file name is renamed to be the new one too.
*
* @param newGS new generation stamp
* @throws IOException if the change fails
*/
abstract public void bumpReplicaGS(long newGS) throws IOException;
abstract public ReplicaInfo getOriginalReplica();
/**
* Get the recovery id.
* @return the generation stamp that the replica will be bumped to
*/
abstract public long getRecoveryID();
/**
* Set the recovery id.
* @param recoveryId the new recoveryId
*/
abstract public void setRecoveryID(long recoveryId);
abstract public boolean breakHardLinksIfNeeded() throws IOException;
abstract public ReplicaRecoveryInfo createInfo();
abstract public int compareWith(ScanInfo info);
abstract public void truncateBlock(long newLength) throws IOException;
abstract public void copyMetadata(URI destination) throws IOException;
abstract public void copyBlockdata(URI destination) throws IOException;
/**
* Number of bytes originally reserved for this replica. The actual
* reservation is adjusted as data is written to disk.
@ -216,79 +257,6 @@ public long getOriginalBytesReserved() {
return 0;
}
/**
* Copy specified file into a temporary file. Then rename the
* temporary file to the original name. This will cause any
* hardlinks to the original file to be removed. The temporary
* files are created in the same directory. The temporary files will
* be recovered (especially on Windows) on datanode restart.
*/
private void breakHardlinks(File file, Block b) throws IOException {
File tmpFile = DatanodeUtil.createTmpFile(b, DatanodeUtil.getUnlinkTmpFile(file));
try {
FileInputStream in = new FileInputStream(file);
try {
FileOutputStream out = new FileOutputStream(tmpFile);
try {
IOUtils.copyBytes(in, out, 16 * 1024);
} finally {
out.close();
}
} finally {
in.close();
}
if (file.length() != tmpFile.length()) {
throw new IOException("Copy of file " + file + " size " + file.length()+
" into file " + tmpFile +
" resulted in a size of " + tmpFile.length());
}
FileUtil.replaceFile(tmpFile, file);
} catch (IOException e) {
boolean done = tmpFile.delete();
if (!done) {
DataNode.LOG.info("detachFile failed to delete temporary file " +
tmpFile);
}
throw e;
}
}
/**
* This function "breaks hardlinks" to the current replica file.
*
* When doing a DataNode upgrade, we create a bunch of hardlinks to each block
* file. This cleverly ensures that both the old and the new storage
* directories can contain the same block file, without using additional space
* for the data.
*
* However, when we want to append to the replica file, we need to "break" the
* hardlink to ensure that the old snapshot continues to contain the old data
* length. If we failed to do that, we could roll back to the previous/
* directory during a downgrade, and find that the block contents were longer
* than they were at the time of upgrade.
*
* @return true only if data was copied.
* @throws IOException
*/
public boolean breakHardLinksIfNeeded() throws IOException {
File file = getBlockFile();
if (file == null || getVolume() == null) {
throw new IOException("detachBlock:Block not found. " + this);
}
File meta = getMetaFile();
int linkCount = HardLink.getLinkCount(file);
if (linkCount > 1) {
DataNode.LOG.info("Breaking hardlink for " + linkCount + "x-linked " +
"block " + this);
breakHardlinks(file, this);
}
if (HardLink.getLinkCount(meta) > 1) {
breakHardlinks(meta, this);
}
return true;
}
@Override //Object
public String toString() {
return getClass().getSimpleName()
@ -298,7 +266,7 @@ public String toString() {
+ "\n getBytesOnDisk() = " + getBytesOnDisk()
+ "\n getVisibleLength()= " + getVisibleLength()
+ "\n getVolume() = " + getVolume()
+ "\n getBlockFile() = " + getBlockFile();
+ "\n getBlockURI() = " + getBlockURI();
}
@Override

30
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaUnderRecovery.java
View File

@ -17,8 +17,6 @@
*/
package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
@ -31,19 +29,19 @@
* A recovery with higher recovery id preempts recoveries with a lower id.
*
*/
public class ReplicaUnderRecovery extends ReplicaInfo {
private ReplicaInfo original; // the original replica that needs to be recovered
public class ReplicaUnderRecovery extends LocalReplica {
private LocalReplica original; // original replica to be recovered
private long recoveryId; // recovery id; it is also the generation stamp
// that the replica will be bumped to after recovery
public ReplicaUnderRecovery(ReplicaInfo replica, long recoveryId) {
super(replica, replica.getVolume(), replica.getDir());
super(replica, replica.getVolume(), ((LocalReplica)replica).getDir());
if ( replica.getState() != ReplicaState.FINALIZED &&
replica.getState() != ReplicaState.RBW &&
replica.getState() != ReplicaState.RWR ) {
throw new IllegalArgumentException("Cannot recover replica: " + replica);
}
this.original = replica;
this.original = (LocalReplica) replica;
this.recoveryId = recoveryId;
}
@ -53,22 +51,16 @@ public ReplicaUnderRecovery(ReplicaInfo replica, long recoveryId) {
*/
public ReplicaUnderRecovery(ReplicaUnderRecovery from) {
super(from);
this.original = from.getOriginalReplica();
this.original = (LocalReplica) from.getOriginalReplica();
this.recoveryId = from.getRecoveryID();
}
/**
* Get the recovery id
* @return the generation stamp that the replica will be bumped to
*/
@Override
public long getRecoveryID() {
return recoveryId;
}
/**
* Set the recovery id
* @param recoveryId the new recoveryId
*/
@Override
public void setRecoveryID(long recoveryId) {
if (recoveryId > this.recoveryId) {
this.recoveryId = recoveryId;
@ -82,6 +74,7 @@ public void setRecoveryID(long recoveryId) {
* Get the original replica that's under recovery
* @return the original replica under recovery
*/
@Override
public ReplicaInfo getOriginalReplica() {
return original;
}
@ -120,9 +113,9 @@ public void setNumBytes(long numBytes) {
}
@Override //ReplicaInfo
public void setDir(File dir) {
super.setDir(dir);
original.setDir(dir);
public void updateWithReplica(StorageLocation replicaLocation) {
super.updateWithReplica(replicaLocation);
original.updateWithReplica(replicaLocation);
}
@Override //ReplicaInfo
@ -148,6 +141,7 @@ public String toString() {
+ "\n original=" + original;
}
@Override
public ReplicaRecoveryInfo createInfo() {
return new ReplicaRecoveryInfo(original.getBlockId(),
original.getBytesOnDisk(), original.getGenerationStamp(),

27
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaWaitingToBeRecovered.java
View File

@ -22,6 +22,7 @@
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
/**
* This class represents a replica that is waiting to be recovered.
@ -32,7 +33,7 @@
* client continues to write or be recovered as a result of
* lease recovery.
*/
public class ReplicaWaitingToBeRecovered extends ReplicaInfo {
public class ReplicaWaitingToBeRecovered extends LocalReplica {
/**
* Constructor
@ -94,4 +95,28 @@ public int hashCode() {
public String toString() {
return super.toString();
}
@Override
public ReplicaInfo getOriginalReplica() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support getOriginalReplica");
}
@Override
public long getRecoveryID() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support getRecoveryID");
}
@Override
public void setRecoveryID(long recoveryId) {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support getRecoveryID");
}
@Override
public ReplicaRecoveryInfo createInfo() {
throw new UnsupportedOperationException("Replica of type " + getState() +
" does not support createInfo");
}
}

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/FsDatasetSpi.java
View File

@ -44,9 +44,8 @@
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.FinalizedReplica;
import org.apache.hadoop.hdfs.server.datanode.Replica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipelineInterface;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.ReplicaHandler;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException;
@ -230,10 +229,10 @@ StorageReport[] getStorageReports(String bpid)
VolumeFailureSummary getVolumeFailureSummary();
/** @return a list of finalized blocks for the given block pool. */
List<FinalizedReplica> getFinalizedBlocks(String bpid);
List<ReplicaInfo> getFinalizedBlocks(String bpid);
/** @return a list of finalized blocks for the given block pool. */
List<FinalizedReplica> getFinalizedBlocksOnPersistentStorage(String bpid);
List<ReplicaInfo> getFinalizedBlocksOnPersistentStorage(String bpid);
/**
* Check whether the in-memory block record matches the block on the disk,
@ -337,7 +336,7 @@ ReplicaHandler recoverRbw(ExtendedBlock b,
* @param temporary the temporary replica being converted
* @return the result RBW
*/
ReplicaInPipelineInterface convertTemporaryToRbw(
ReplicaInPipeline convertTemporaryToRbw(
ExtendedBlock temporary) throws IOException;
/**

74
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/BlockPoolSlice.java
View File

@ -45,13 +45,13 @@
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs.BlockReportReplica;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
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.ReplicaBeingWritten;
import org.apache.hadoop.hdfs.server.datanode.ReplicaWaitingToBeRecovered;
import org.apache.hadoop.hdfs.server.datanode.ReplicaBuilder;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskReplicaTracker.RamDiskReplica;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.nativeio.NativeIO;
import org.apache.hadoop.util.DataChecksum;
@ -309,14 +309,14 @@ File createRbwFile(Block b) throws IOException {
return rbwFile;
}
File addFinalizedBlock(Block b, File f) throws IOException {
File addFinalizedBlock(Block b, ReplicaInfo replicaInfo) throws IOException {
File blockDir = DatanodeUtil.idToBlockDir(finalizedDir, b.getBlockId());
if (!blockDir.exists()) {
if (!blockDir.mkdirs()) {
throw new IOException("Failed to mkdirs " + blockDir);
}
}
File blockFile = FsDatasetImpl.moveBlockFiles(b, f, blockDir);
File blockFile = FsDatasetImpl.moveBlockFiles(b, replicaInfo, blockDir);
File metaFile = FsDatasetUtil.getMetaFile(blockFile, b.getGenerationStamp());
if (dfsUsage instanceof CachingGetSpaceUsed) {
((CachingGetSpaceUsed) dfsUsage).incDfsUsed(
@ -329,16 +329,28 @@ File addFinalizedBlock(Block b, File f) throws IOException {
* Move a persisted replica from lazypersist directory to a subdirectory
* under finalized.
*/
File activateSavedReplica(Block b, File metaFile, File blockFile)
throws IOException {
final File blockDir = DatanodeUtil.idToBlockDir(finalizedDir, b.getBlockId());
ReplicaInfo activateSavedReplica(ReplicaInfo replicaInfo,
RamDiskReplica replicaState) throws IOException {
File metaFile = replicaState.getSavedMetaFile();
File blockFile = replicaState.getSavedBlockFile();
final long blockId = replicaInfo.getBlockId();
final File blockDir = DatanodeUtil.idToBlockDir(finalizedDir, blockId);
final File targetBlockFile = new File(blockDir, blockFile.getName());
final File targetMetaFile = new File(blockDir, metaFile.getName());
FileUtils.moveFile(blockFile, targetBlockFile);
FsDatasetImpl.LOG.info("Moved " + blockFile + " to " + targetBlockFile);
FileUtils.moveFile(metaFile, targetMetaFile);
FsDatasetImpl.LOG.info("Moved " + metaFile + " to " + targetMetaFile);
return targetBlockFile;
ReplicaInfo newReplicaInfo =
new ReplicaBuilder(ReplicaState.FINALIZED)
.setBlockId(blockId)
.setLength(replicaInfo.getBytesOnDisk())
.setGenerationStamp(replicaInfo.getGenerationStamp())
.setFsVolume(replicaState.getLazyPersistVolume())
.setDirectoryToUse(targetBlockFile.getParentFile())
.build();
return newReplicaInfo;
}
void checkDirs() throws DiskErrorException {
@ -461,9 +473,13 @@ private void addReplicaToReplicasMap(Block block, ReplicaMap volumeMap,
long blockId = block.getBlockId();
long genStamp = block.getGenerationStamp();
if (isFinalized) {
newReplica = new FinalizedReplica(blockId,
block.getNumBytes(), genStamp, volume, DatanodeUtil
.idToBlockDir(finalizedDir, blockId));
newReplica = new ReplicaBuilder(ReplicaState.FINALIZED)
.setBlockId(blockId)
.setLength(block.getNumBytes())
.setGenerationStamp(genStamp)
.setFsVolume(volume)
.setDirectoryToUse(DatanodeUtil.idToBlockDir(finalizedDir, blockId))
.build();
} else {
File file = new File(rbwDir, block.getBlockName());
boolean loadRwr = true;
@ -477,9 +493,15 @@ private void addReplicaToReplicasMap(Block block, ReplicaMap volumeMap,
// It didn't expire. Load the replica as a RBW.
// We don't know the expected block length, so just use 0
// and don't reserve any more space for writes.
newReplica = new ReplicaBeingWritten(blockId,
validateIntegrityAndSetLength(file, genStamp),
genStamp, volume, file.getParentFile(), null, 0);
newReplica = new ReplicaBuilder(ReplicaState.RBW)
.setBlockId(blockId)
.setLength(validateIntegrityAndSetLength(file, genStamp))
.setGenerationStamp(genStamp)
.setFsVolume(volume)
.setDirectoryToUse(file.getParentFile())
.setWriterThread(null)
.setBytesToReserve(0)
.build();
loadRwr = false;
}
sc.close();
@ -496,9 +518,13 @@ private void addReplicaToReplicasMap(Block block, ReplicaMap volumeMap,
}
// Restart meta doesn't exist or expired.
if (loadRwr) {
newReplica = new ReplicaWaitingToBeRecovered(blockId,
validateIntegrityAndSetLength(file, genStamp),
genStamp, volume, file.getParentFile());
ReplicaBuilder builder = new ReplicaBuilder(ReplicaState.RWR)
.setBlockId(blockId)
.setLength(validateIntegrityAndSetLength(file, genStamp))
.setGenerationStamp(genStamp)
.setFsVolume(volume)
.setDirectoryToUse(file.getParentFile());
newReplica = builder.build();
}
}
@ -614,7 +640,7 @@ static ReplicaInfo selectReplicaToDelete(final ReplicaInfo replica1,
// it's the same block so don't ever delete it, even if GS or size
// differs. caller should keep the one it just discovered on disk
if (replica1.getBlockFile().equals(replica2.getBlockFile())) {
if (replica1.getBlockURI().equals(replica2.getBlockURI())) {
return null;
}
if (replica1.getGenerationStamp() != replica2.getGenerationStamp()) {
@ -641,13 +667,11 @@ static ReplicaInfo selectReplicaToDelete(final ReplicaInfo replica1,
private void deleteReplica(final ReplicaInfo replicaToDelete) {
// Delete the files on disk. Failure here is okay.
final File blockFile = replicaToDelete.getBlockFile();
if (!blockFile.delete()) {
LOG.warn("Failed to delete block file " + blockFile);
if (!replicaToDelete.deleteBlockData()) {
LOG.warn("Failed to delete block file for replica " + replicaToDelete);
}
final File metaFile = replicaToDelete.getMetaFile();
if (!metaFile.delete()) {
LOG.warn("Failed to delete meta file " + metaFile);
if (!replicaToDelete.deleteMetadata()) {
LOG.warn("Failed to delete meta file for replica " + replicaToDelete);
}
}

71
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetAsyncDiskService.java
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@ -20,6 +20,7 @@
import java.io.File;
import java.io.FileDescriptor;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
@ -34,6 +35,8 @@
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.datanode.DatanodeUtil;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference;
import org.apache.hadoop.hdfs.server.protocol.BlockCommand;
import org.apache.hadoop.io.IOUtils;
@ -211,12 +214,12 @@ public void run() {
* Delete the block file and meta file from the disk asynchronously, adjust
* dfsUsed statistics accordingly.
*/
void deleteAsync(FsVolumeReference volumeRef, File blockFile, File metaFile,
void deleteAsync(FsVolumeReference volumeRef, ReplicaInfo replicaToDelete,
ExtendedBlock block, String trashDirectory) {
LOG.info("Scheduling " + block.getLocalBlock()
+ " file " + blockFile + " for deletion");
+ " replica " + replicaToDelete + " for deletion");
ReplicaFileDeleteTask deletionTask = new ReplicaFileDeleteTask(
volumeRef, blockFile, metaFile, block, trashDirectory);
volumeRef, replicaToDelete, block, trashDirectory);
execute(((FsVolumeImpl) volumeRef.getVolume()).getCurrentDir(), deletionTask);
}
@ -227,19 +230,18 @@ void deleteAsync(FsVolumeReference volumeRef, File blockFile, File metaFile,
* files are deleted immediately.
*/
class ReplicaFileDeleteTask implements Runnable {
final FsVolumeReference volumeRef;
final FsVolumeImpl volume;
final File blockFile;
final File metaFile;
final ExtendedBlock block;
final String trashDirectory;
ReplicaFileDeleteTask(FsVolumeReference volumeRef, File blockFile,
File metaFile, ExtendedBlock block, String trashDirectory) {
private final FsVolumeReference volumeRef;
private final FsVolumeImpl volume;
private final ReplicaInfo replicaToDelete;
private final ExtendedBlock block;
private final String trashDirectory;
ReplicaFileDeleteTask(FsVolumeReference volumeRef,
ReplicaInfo replicaToDelete, ExtendedBlock block,
String trashDirectory) {
this.volumeRef = volumeRef;
this.volume = (FsVolumeImpl) volumeRef.getVolume();
this.blockFile = blockFile;
this.metaFile = metaFile;
this.replicaToDelete = replicaToDelete;
this.block = block;
this.trashDirectory = trashDirectory;
}
@ -248,15 +250,22 @@ class ReplicaFileDeleteTask implements Runnable {
public String toString() {
// Called in AsyncDiskService.execute for displaying error messages.
return "deletion of block " + block.getBlockPoolId() + " "
+ block.getLocalBlock() + " with block file " + blockFile
+ " and meta file " + metaFile + " from volume " + volume;
+ block.getLocalBlock() + " with block file "
+ replicaToDelete.getBlockURI() + " and meta file "
+ replicaToDelete.getMetadataURI() + " from volume " + volume;
}
private boolean deleteFiles() {
return blockFile.delete() && (metaFile.delete() || !metaFile.exists());
return replicaToDelete.deleteBlockData() &&
(replicaToDelete.deleteMetadata() || !replicaToDelete.metadataExists());
}
private boolean moveFiles() {
if (trashDirectory == null) {
LOG.error("Trash dir for replica " + replicaToDelete + " is null");
return false;
}
File trashDirFile = new File(trashDirectory);
if (!trashDirFile.exists() && !trashDirFile.mkdirs()) {
LOG.error("Failed to create trash directory " + trashDirectory);
@ -264,20 +273,28 @@ private boolean moveFiles() {
}
if (LOG.isDebugEnabled()) {
LOG.debug("Moving files " + blockFile.getName() + " and " +
metaFile.getName() + " to trash.");
LOG.debug("Moving files " + replicaToDelete.getBlockURI() + " and " +
replicaToDelete.getMetadataURI() + " to trash.");
}
File newBlockFile = new File(trashDirectory, blockFile.getName());
File newMetaFile = new File(trashDirectory, metaFile.getName());
return (blockFile.renameTo(newBlockFile) &&
metaFile.renameTo(newMetaFile));
final String blockName = replicaToDelete.getBlockName();
final long genstamp = replicaToDelete.getGenerationStamp();
File newBlockFile = new File(trashDirectory, blockName);
File newMetaFile = new File(trashDirectory,
DatanodeUtil.getMetaName(blockName, genstamp));
try {
return (replicaToDelete.renameData(newBlockFile.toURI()) &&
replicaToDelete.renameMeta(newMetaFile.toURI()));
} catch (IOException e) {
LOG.error("Error moving files to trash: " + replicaToDelete, e);
}
return false;
}
@Override
public void run() {
final long blockLength = blockFile.length();
final long metaLength = metaFile.length();
final long blockLength = replicaToDelete.getBlockDataLength();
final long metaLength = replicaToDelete.getMetadataLength();
boolean result;
result = (trashDirectory == null) ? deleteFiles() : moveFiles();
@ -286,7 +303,7 @@ public void run() {
LOG.warn("Unexpected error trying to "
+ (trashDirectory == null ? "delete" : "move")
+ " block " + block.getBlockPoolId() + " " + block.getLocalBlock()
+ " at file " + blockFile + ". Ignored.");
+ " at file " + replicaToDelete.getBlockURI() + ". Ignored.");
} else {
if(block.getLocalBlock().getNumBytes() != BlockCommand.NO_ACK){
datanode.notifyNamenodeDeletedBlock(block, volume.getStorageID());
@ -294,7 +311,7 @@ public void run() {
volume.onBlockFileDeletion(block.getBlockPoolId(), blockLength);
volume.onMetaFileDeletion(block.getBlockPoolId(), metaLength);
LOG.info("Deleted " + block.getBlockPoolId() + " "
+ block.getLocalBlock() + " file " + blockFile);
+ block.getLocalBlock() + " URI " + replicaToDelete.getBlockURI());
}
updateDeletedBlockId(block);
IOUtils.cleanup(null, volumeRef);

906
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
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18
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetUtil.java
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@ -18,14 +18,17 @@
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.Arrays;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
import org.apache.hadoop.io.IOUtils;
/** Utility methods. */
@InterfaceAudience.Private
@ -71,6 +74,21 @@ public boolean accept(File dir, String name) {
return matches[0];
}
public static FileInputStream openAndSeek(File file, long offset)
throws IOException {
RandomAccessFile raf = null;
try {
raf = new RandomAccessFile(file, "r");
if (offset > 0) {
raf.seek(offset);
}
return new FileInputStream(raf.getFD());
} catch(IOException ioe) {
IOUtils.cleanup(null, raf);
throw ioe;
}
}
/**
* Find the meta-file for the specified block file
* and then return the generation stamp from the name of the meta-file.

154
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java
View File

@ -47,11 +47,19 @@
import org.apache.hadoop.fs.StorageType;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSUtilClient;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
import org.apache.hadoop.hdfs.server.datanode.LocalReplica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.util.DiskChecker.DiskOutOfSpaceException;
import org.apache.hadoop.hdfs.server.datanode.ReplicaBuilder;
import org.apache.hadoop.hdfs.server.datanode.LocalReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
@ -102,7 +110,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
// Disk space reserved for blocks (RBW or Re-replicating) open for write.
private AtomicLong reservedForReplicas;
private long recentReserved = 0;
private final Configuration conf;
// Capacity configured. This is useful when we want to
// limit the visible capacity for tests. If negative, then we just
// query from the filesystem.
@ -130,6 +138,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
this.usage = new DF(parent, conf);
this.storageType = storageType;
this.configuredCapacity = -1;
this.conf = conf;
cacheExecutor = initializeCacheExecutor(parent);
}
@ -896,10 +905,15 @@ File createRbwFile(String bpid, Block b) throws IOException {
* @return
* @throws IOException
*/
File addFinalizedBlock(String bpid, Block b, File f, long bytesReserved)
throws IOException {
ReplicaInfo addFinalizedBlock(String bpid, Block b, ReplicaInfo replicaInfo,
long bytesReserved) throws IOException {
releaseReservedSpace(bytesReserved);
return getBlockPoolSlice(bpid).addFinalizedBlock(b, f);
File dest = getBlockPoolSlice(bpid).addFinalizedBlock(b, replicaInfo);
return new ReplicaBuilder(ReplicaState.FINALIZED)
.setBlock(replicaInfo)
.setFsVolume(this)
.setDirectoryToUse(dest.getParentFile())
.build();
}
Executor getCacheExecutor() {
@ -950,18 +964,18 @@ void shutdown() {
}
}
void addBlockPool(String bpid, Configuration conf) throws IOException {
addBlockPool(bpid, conf, null);
void addBlockPool(String bpid, Configuration c) throws IOException {
addBlockPool(bpid, c, null);
}
void addBlockPool(String bpid, Configuration conf, Timer timer)
void addBlockPool(String bpid, Configuration c, Timer timer)
throws IOException {
File bpdir = new File(currentDir, bpid);
BlockPoolSlice bp;
if (timer == null) {
bp = new BlockPoolSlice(bpid, this, bpdir, conf, new Timer());
bp = new BlockPoolSlice(bpid, this, bpdir, c, new Timer());
} else {
bp = new BlockPoolSlice(bpid, this, bpdir, conf, timer);
bp = new BlockPoolSlice(bpid, this, bpdir, c, timer);
}
bpSlices.put(bpid, bp);
}
@ -1053,5 +1067,127 @@ public StorageType getStorageType() {
DatanodeStorage toDatanodeStorage() {
return new DatanodeStorage(storageID, DatanodeStorage.State.NORMAL, storageType);
}
public ReplicaInPipeline append(String bpid, ReplicaInfo replicaInfo,
long newGS, long estimateBlockLen) throws IOException {
long bytesReserved = estimateBlockLen - replicaInfo.getNumBytes();
if (getAvailable() < bytesReserved) {
throw new DiskOutOfSpaceException("Insufficient space for appending to "
+ replicaInfo);
}
assert replicaInfo.getVolume() == this:
"The volume of the replica should be the same as this volume";
// construct a RBW replica with the new GS
File newBlkFile = new File(getRbwDir(bpid), replicaInfo.getBlockName());
LocalReplicaInPipeline newReplicaInfo = new ReplicaBuilder(ReplicaState.RBW)
.setBlockId(replicaInfo.getBlockId())
.setLength(replicaInfo.getNumBytes())
.setGenerationStamp(newGS)
.setFsVolume(this)
.setDirectoryToUse(newBlkFile.getParentFile())
.setWriterThread(Thread.currentThread())
.setBytesToReserve(bytesReserved)
.buildLocalReplicaInPipeline();
// rename meta file to rbw directory
// rename block file to rbw directory
newReplicaInfo.moveReplicaFrom(replicaInfo, newBlkFile);
reserveSpaceForReplica(bytesReserved);
return newReplicaInfo;
}
public ReplicaInPipeline createRbw(ExtendedBlock b) throws IOException {
File f = createRbwFile(b.getBlockPoolId(), b.getLocalBlock());
LocalReplicaInPipeline newReplicaInfo = new ReplicaBuilder(ReplicaState.RBW)
.setBlockId(b.getBlockId())
.setGenerationStamp(b.getGenerationStamp())
.setFsVolume(this)
.setDirectoryToUse(f.getParentFile())
.setBytesToReserve(b.getNumBytes())
.buildLocalReplicaInPipeline();
return newReplicaInfo;
}
public ReplicaInPipeline convertTemporaryToRbw(ExtendedBlock b,
ReplicaInfo temp) throws IOException {
final long blockId = b.getBlockId();
final long expectedGs = b.getGenerationStamp();
final long visible = b.getNumBytes();
final long numBytes = temp.getNumBytes();
// move block files to the rbw directory
BlockPoolSlice bpslice = getBlockPoolSlice(b.getBlockPoolId());
final File dest = FsDatasetImpl.moveBlockFiles(b.getLocalBlock(), temp,
bpslice.getRbwDir());
// create RBW
final LocalReplicaInPipeline rbw = new ReplicaBuilder(ReplicaState.RBW)
.setBlockId(blockId)
.setLength(numBytes)
.setGenerationStamp(expectedGs)
.setFsVolume(this)
.setDirectoryToUse(dest.getParentFile())
.setWriterThread(Thread.currentThread())
.setBytesToReserve(0)
.buildLocalReplicaInPipeline();
rbw.setBytesAcked(visible);
return rbw;
}
public ReplicaInPipeline createTemporary(ExtendedBlock b) throws IOException {
// create a temporary file to hold block in the designated volume
File f = createTmpFile(b.getBlockPoolId(), b.getLocalBlock());
LocalReplicaInPipeline newReplicaInfo =
new ReplicaBuilder(ReplicaState.TEMPORARY)
.setBlockId(b.getBlockId())
.setGenerationStamp(b.getGenerationStamp())
.setDirectoryToUse(f.getParentFile())
.setBytesToReserve(b.getLocalBlock().getNumBytes())
.setFsVolume(this)
.buildLocalReplicaInPipeline();
return newReplicaInfo;
}
public ReplicaInPipeline updateRURCopyOnTruncate(ReplicaInfo rur,
String bpid, long newBlockId, long recoveryId, long newlength)
throws IOException {
rur.breakHardLinksIfNeeded();
File[] copiedReplicaFiles =
copyReplicaWithNewBlockIdAndGS(rur, bpid, newBlockId, recoveryId);
File blockFile = copiedReplicaFiles[1];
File metaFile = copiedReplicaFiles[0];
LocalReplica.truncateBlock(blockFile, metaFile,
rur.getNumBytes(), newlength);
LocalReplicaInPipeline newReplicaInfo = new ReplicaBuilder(ReplicaState.RBW)
.setBlockId(newBlockId)
.setGenerationStamp(recoveryId)
.setFsVolume(this)
.setDirectoryToUse(blockFile.getParentFile())
.setBytesToReserve(newlength)
.buildLocalReplicaInPipeline();
return newReplicaInfo;
}
private File[] copyReplicaWithNewBlockIdAndGS(
ReplicaInfo replicaInfo, String bpid, long newBlkId, long newGS)
throws IOException {
String blockFileName = Block.BLOCK_FILE_PREFIX + newBlkId;
FsVolumeImpl v = (FsVolumeImpl) replicaInfo.getVolume();
final File tmpDir = v.getBlockPoolSlice(bpid).getTmpDir();
final File destDir = DatanodeUtil.idToBlockDir(tmpDir, newBlkId);
final File dstBlockFile = new File(destDir, blockFileName);
final File dstMetaFile = FsDatasetUtil.getMetaFile(dstBlockFile, newGS);
return FsDatasetImpl.copyBlockFiles(replicaInfo, dstMetaFile,
dstBlockFile, true, DFSUtilClient.getSmallBufferSize(conf), conf);
}
}

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeList.java
View File

@ -311,7 +311,7 @@ void addVolume(FsVolumeReference ref) {
} else {
// If the volume is not put into a volume scanner, it does not need to
// hold the reference.
IOUtils.cleanup(FsDatasetImpl.LOG, ref);
IOUtils.cleanup(null, ref);
}
// If the volume is used to replace a failed volume, it needs to reset the
// volume failure info for this volume.

34
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/RamDiskAsyncLazyPersistService.java
View File

@ -24,6 +24,7 @@
import org.apache.hadoop.hdfs.DFSUtilClient;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference;
import java.io.File;
@ -182,8 +183,7 @@ synchronized void shutdown() {
*/
void submitLazyPersistTask(String bpId, long blockId,
long genStamp, long creationTime,
File metaFile, File blockFile,
FsVolumeReference target) throws IOException {
ReplicaInfo replica, FsVolumeReference target) throws IOException {
if (LOG.isDebugEnabled()) {
LOG.debug("LazyWriter schedule async task to persist RamDisk block pool id: "
+ bpId + " block id: " + blockId);
@ -198,31 +198,29 @@ void submitLazyPersistTask(String bpId, long blockId,
}
ReplicaLazyPersistTask lazyPersistTask = new ReplicaLazyPersistTask(
bpId, blockId, genStamp, creationTime, blockFile, metaFile,
bpId, blockId, genStamp, creationTime, replica,
target, lazyPersistDir);
execute(volume.getCurrentDir(), lazyPersistTask);
}
class ReplicaLazyPersistTask implements Runnable {
final String bpId;
final long blockId;
final long genStamp;
final long creationTime;
final File blockFile;
final File metaFile;
final FsVolumeReference targetVolume;
final File lazyPersistDir;
private final String bpId;
private final long blockId;
private final long genStamp;
private final long creationTime;
private final ReplicaInfo replicaInfo;
private final FsVolumeReference targetVolume;
private final File lazyPersistDir;
ReplicaLazyPersistTask(String bpId, long blockId,
long genStamp, long creationTime,
File blockFile, File metaFile,
ReplicaInfo replicaInfo,
FsVolumeReference targetVolume, File lazyPersistDir) {
this.bpId = bpId;
this.blockId = blockId;
this.genStamp = genStamp;
this.creationTime = creationTime;
this.blockFile = blockFile;
this.metaFile = metaFile;
this.replicaInfo = replicaInfo;
this.targetVolume = targetVolume;
this.lazyPersistDir = lazyPersistDir;
}
@ -232,8 +230,10 @@ public String toString() {
// Called in AsyncLazyPersistService.execute for displaying error messages.
return "LazyWriter async task of persist RamDisk block pool id:"
+ bpId + " block pool id: "
+ blockId + " with block file " + blockFile
+ " and meta file " + metaFile + " to target volume " + targetVolume;}
+ blockId + " with block file " + replicaInfo.getBlockURI()
+ " and meta file " + replicaInfo.getMetadataURI()
+ " to target volume " + targetVolume;
}
@Override
public void run() {
@ -243,7 +243,7 @@ public void run() {
int smallBufferSize = DFSUtilClient.getSmallBufferSize(EMPTY_HDFS_CONF);
// No FsDatasetImpl lock for the file copy
File targetFiles[] = FsDatasetImpl.copyBlockFiles(
blockId, genStamp, metaFile, blockFile, lazyPersistDir, true,
blockId, genStamp, replicaInfo, lazyPersistDir, true,
smallBufferSize, conf);
// Lock FsDataSetImpl during onCompleteLazyPersist callback

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestClientProtocolForPipelineRecovery.java
View File

@ -39,7 +39,7 @@
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataNodeFaultInjector;
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipelineInterface;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException;
import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
import org.apache.hadoop.hdfs.tools.DFSAdmin;
@ -530,7 +530,7 @@ public void testPipelineRecoveryWithTransferBlock() throws Exception {
DataNodeFaultInjector.set(new DataNodeFaultInjector() {
@Override
public void failPipeline(ReplicaInPipelineInterface replicaInfo,
public void failPipeline(ReplicaInPipeline replicaInfo,
String mirror) throws IOException {
if (!lastDn.equals(mirror)) {
// Only fail for second DN

6
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestCrcCorruption.java
View File

@ -34,7 +34,7 @@
import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.FinalizedReplica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.io.IOUtils;
import org.junit.Before;
import org.junit.Test;
@ -172,12 +172,12 @@ private void thistest(Configuration conf, DFSTestUtil util) throws Exception {
final int dnIdx = 0;
final DataNode dn = cluster.getDataNodes().get(dnIdx);
final String bpid = cluster.getNamesystem().getBlockPoolId();
List<FinalizedReplica> replicas =
List<ReplicaInfo> replicas =
dn.getFSDataset().getFinalizedBlocks(bpid);
assertTrue("Replicas do not exist", !replicas.isEmpty());
for (int idx = 0; idx < replicas.size(); idx++) {
FinalizedReplica replica = replicas.get(idx);
ReplicaInfo replica = replicas.get(idx);
ExtendedBlock eb = new ExtendedBlock(bpid, replica);
if (idx % 3 == 0) {
LOG.info("Deliberately removing meta for block " + eb);

30
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java
View File

@ -132,7 +132,7 @@ public static byte simulatedByte(Block b, long offsetInBlk) {
}
// information about a single block
private class BInfo implements ReplicaInPipelineInterface {
private class BInfo implements ReplicaInPipeline {
final Block theBlock;
private boolean finalized = false; // if not finalized => ongoing creation
SimulatedOutputStream oStream = null;
@ -330,6 +330,28 @@ public ChunkChecksum getLastChecksumAndDataLen() {
public boolean isOnTransientStorage() {
return false;
}
@Override
public ReplicaInfo getReplicaInfo() {
return null;
}
@Override
public void setWriter(Thread writer) {
}
@Override
public void interruptThread() {
}
@Override
public boolean attemptToSetWriter(Thread prevWriter, Thread newWriter) {
return false;
}
@Override
public void stopWriter(long xceiverStopTimeout) throws IOException {
}
}
/**
@ -1228,7 +1250,7 @@ public void deleteBlockPool(String bpid, boolean force) {
}
@Override
public ReplicaInPipelineInterface convertTemporaryToRbw(ExtendedBlock temporary)
public ReplicaInPipeline convertTemporaryToRbw(ExtendedBlock temporary)
throws IOException {
final Map<Block, BInfo> map = blockMap.get(temporary.getBlockPoolId());
if (map == null) {
@ -1302,12 +1324,12 @@ public StorageReport[] getStorageReports(String bpid) {
}
@Override
public List<FinalizedReplica> getFinalizedBlocks(String bpid) {
public List<ReplicaInfo> getFinalizedBlocks(String bpid) {
throw new UnsupportedOperationException();
}
@Override
public List<FinalizedReplica> getFinalizedBlocksOnPersistentStorage(String bpid) {
public List<ReplicaInfo> getFinalizedBlocksOnPersistentStorage(String bpid) {
throw new UnsupportedOperationException();
}

6
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockPoolSliceStorage.java
View File

@ -21,6 +21,7 @@
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hdfs.server.common.Storage;
import org.junit.Test;
import org.mockito.Mockito;
import java.io.File;
import java.util.Random;
@ -105,7 +106,10 @@ public void getTrashDirectoryForBlockFile(String fileName, int nestingLevel) {
LOG.info("Got subdir " + blockFileSubdir);
LOG.info("Generated file path " + testFilePath);
assertThat(storage.getTrashDirectory(new File(testFilePath)), is(expectedTrashPath));
ReplicaInfo info = Mockito.mock(ReplicaInfo.class);
Mockito.when(info.getBlockURI()).thenReturn(new File(testFilePath).toURI());
assertThat(storage.getTrashDirectory(info), is(expectedTrashPath));
}
/*

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockRecovery.java
View File

@ -667,7 +667,7 @@ public void testNotMatchedReplicaID() throws IOException {
if(LOG.isDebugEnabled()) {
LOG.debug("Running " + GenericTestUtils.getMethodName());
}
ReplicaInPipelineInterface replicaInfo = dn.data.createRbw(
ReplicaInPipeline replicaInfo = dn.data.createRbw(
StorageType.DEFAULT, block, false).getReplica();
ReplicaOutputStreams streams = null;
try {

6
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeRollingUpgrade.java
View File

@ -49,6 +49,7 @@
import org.apache.hadoop.hdfs.tools.DFSAdmin;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.Test;
import org.mockito.Mockito;
/**
* Ensure that the DataNode correctly handles rolling upgrade
@ -114,8 +115,11 @@ private File getBlockForFile(Path path, boolean exists) throws IOException {
}
private File getTrashFileForBlock(File blockFile, boolean exists) {
ReplicaInfo info = Mockito.mock(ReplicaInfo.class);
Mockito.when(info.getBlockURI()).thenReturn(blockFile.toURI());
File trashFile = new File(
dn0.getStorage().getTrashDirectoryForBlockFile(blockPoolId, blockFile));
dn0.getStorage().getTrashDirectoryForReplica(blockPoolId, info));
assertEquals(exists, trashFile.exists());
return trashFile;
}

17
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java
View File

@ -116,8 +116,8 @@ private List<LocatedBlock> createFile(String fileNamePrefix,
private long truncateBlockFile() throws IOException {
try(AutoCloseableLock lock = fds.acquireDatasetLock()) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File f = b.getBlockFile();
File mf = b.getMetaFile();
File f = new File(b.getBlockURI());
File mf = new File(b.getMetadataURI());
// Truncate a block file that has a corresponding metadata file
if (f.exists() && f.length() != 0 && mf.exists()) {
FileOutputStream s = null;
@ -141,8 +141,8 @@ private long truncateBlockFile() throws IOException {
private long deleteBlockFile() {
try(AutoCloseableLock lock = fds.acquireDatasetLock()) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File f = b.getBlockFile();
File mf = b.getMetaFile();
File f = new File(b.getBlockURI());
File mf = new File(b.getMetadataURI());
// Delete a block file that has corresponding metadata file
if (f.exists() && mf.exists() && f.delete()) {
LOG.info("Deleting block file " + f.getAbsolutePath());
@ -157,10 +157,9 @@ private long deleteBlockFile() {
private long deleteMetaFile() {
try(AutoCloseableLock lock = fds.acquireDatasetLock()) {
for (ReplicaInfo b : FsDatasetTestUtil.getReplicas(fds, bpid)) {
File file = b.getMetaFile();
// Delete a metadata file
if (file.exists() && file.delete()) {
LOG.info("Deleting metadata file " + file.getAbsolutePath());
if (b.metadataExists() && b.deleteMetadata()) {
LOG.info("Deleting metadata " + b.getMetadataURI());
return b.getBlockId();
}
}
@ -184,8 +183,8 @@ private void duplicateBlock(long blockId) throws IOException {
}
// Volume without a copy of the block. Make a copy now.
File sourceBlock = b.getBlockFile();
File sourceMeta = b.getMetaFile();
File sourceBlock = new File(b.getBlockURI());
File sourceMeta = new File(b.getMetadataURI());
String sourceRoot = b.getVolume().getBasePath();
String destRoot = v.getBasePath();

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestSimulatedFSDataset.java
View File

@ -80,7 +80,7 @@ static int addSomeBlocks(SimulatedFSDataset fsdataset, long startingBlockId,
ExtendedBlock b = new ExtendedBlock(bpid, blkID, 0, 0);
// we pass expected len as zero, - fsdataset should use the sizeof actual
// data written
ReplicaInPipelineInterface bInfo = fsdataset.createRbw(
ReplicaInPipeline bInfo = fsdataset.createRbw(
StorageType.DEFAULT, b, false).getReplica();
ReplicaOutputStreams out = bInfo.createStreams(true,
DataChecksum.newDataChecksum(DataChecksum.Type.CRC32, 512));

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestTransferRbw.java
View File

@ -57,7 +57,7 @@ private static ReplicaBeingWritten getRbw(final DataNode datanode,
String bpid) throws InterruptedException {
return (ReplicaBeingWritten)getReplica(datanode, bpid, ReplicaState.RBW);
}
private static ReplicaInPipeline getReplica(final DataNode datanode,
private static LocalReplicaInPipeline getReplica(final DataNode datanode,
final String bpid, final ReplicaState expectedState) throws InterruptedException {
final Collection<ReplicaInfo> replicas = FsDatasetTestUtil.getReplicas(
datanode.getFSDataset(), bpid);
@ -68,7 +68,7 @@ private static ReplicaInPipeline getReplica(final DataNode datanode,
Assert.assertEquals(1, replicas.size());
final ReplicaInfo r = replicas.iterator().next();
Assert.assertEquals(expectedState, r.getState());
return (ReplicaInPipeline)r;
return (LocalReplicaInPipeline)r;
}
@Test

6
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalDatasetImpl.java
View File

@ -87,12 +87,12 @@ public Map<String, Object> getVolumeInfoMap() {
}
@Override
public List<FinalizedReplica> getFinalizedBlocks(String bpid) {
public List<ReplicaInfo> getFinalizedBlocks(String bpid) {
return null;
}
@Override
public List<FinalizedReplica> getFinalizedBlocksOnPersistentStorage(String bpid) {
public List<ReplicaInfo> getFinalizedBlocksOnPersistentStorage(String bpid) {
return null;
}
@ -159,7 +159,7 @@ public ReplicaHandler recoverRbw(ExtendedBlock b, long newGS,
}
@Override
public ReplicaInPipelineInterface convertTemporaryToRbw(
public ReplicaInPipeline convertTemporaryToRbw(
ExtendedBlock temporary) throws IOException {
return new ExternalReplicaInPipeline();
}

26
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalReplicaInPipeline.java
View File

@ -23,11 +23,12 @@
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.ChunkChecksum;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipelineInterface;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams;
import org.apache.hadoop.util.DataChecksum;
public class ExternalReplicaInPipeline implements ReplicaInPipelineInterface {
public class ExternalReplicaInPipeline implements ReplicaInPipeline {
@Override
public void setNumBytes(long bytesReceived) {
@ -105,4 +106,25 @@ public String getStorageUuid() {
public boolean isOnTransientStorage() {
return false;
}
@Override
public ReplicaInfo getReplicaInfo() {
return null;
}
public void setWriter(Thread writer) {
}
public void stopWriter(long xceiverStopTimeout)
throws IOException {
}
@Override
public boolean attemptToSetWriter(Thread prevWriter, Thread newWriter) {
return false;
}
@Override
public void interruptThread() {
}
}

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/TestExternalDataset.java
View File

@ -19,7 +19,7 @@
package org.apache.hadoop.hdfs.server.datanode.extdataset;
import org.apache.hadoop.hdfs.server.datanode.Replica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipelineInterface;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.junit.Test;
@ -75,7 +75,7 @@ public void testIntantiateExternalReplica() throws Throwable {
*/
@Test
public void testInstantiateReplicaInPipeline() throws Throwable {
ReplicaInPipelineInterface inst = new ExternalReplicaInPipeline();
ReplicaInPipeline inst = new ExternalReplicaInPipeline();
}
/**

43
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImplTestUtils.java
View File

@ -26,8 +26,8 @@
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.DF;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
@ -35,11 +35,11 @@
import org.apache.hadoop.hdfs.server.datanode.FsDatasetTestUtils;
import org.apache.hadoop.hdfs.server.datanode.Replica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaBeingWritten;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.ReplicaBuilder;
import org.apache.hadoop.hdfs.server.datanode.LocalReplicaInPipeline;
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.hdfs.server.datanode.fsdataset.FsDatasetSpi.FsVolumeReferences;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.test.GenericTestUtils;
@ -205,8 +205,8 @@ public FsDatasetImplTestUtils(DataNode datanode) {
dataset = (FsDatasetImpl) datanode.getFSDataset();
}
private File getBlockFile(ExtendedBlock eb) throws IOException {
return dataset.getBlockFile(eb.getBlockPoolId(), eb.getBlockId());
private ReplicaInfo getBlockFile(ExtendedBlock eb) throws IOException {
return dataset.getReplicaInfo(eb);
}
/**
@ -217,8 +217,8 @@ public MaterializedReplica getMaterializedReplica(ExtendedBlock block)
throws ReplicaNotFoundException {
File blockFile;
try {
blockFile = dataset.getBlockFile(
block.getBlockPoolId(), block.getBlockId());
ReplicaInfo r = dataset.getReplicaInfo(block);
blockFile = new File(r.getBlockURI());
} catch (IOException e) {
LOG.error("Block file for " + block + " does not existed:", e);
throw new ReplicaNotFoundException(block);
@ -240,7 +240,7 @@ public Replica createFinalizedReplica(ExtendedBlock block)
public Replica createFinalizedReplica(FsVolumeSpi volume, ExtendedBlock block)
throws IOException {
FsVolumeImpl vol = (FsVolumeImpl) volume;
ReplicaInfo info = new FinalizedReplica(block.getLocalBlock(), vol,
FinalizedReplica info = new FinalizedReplica(block.getLocalBlock(), vol,
vol.getCurrentDir().getParentFile());
dataset.volumeMap.add(block.getBlockPoolId(), info);
info.getBlockFile().createNewFile();
@ -260,7 +260,7 @@ public Replica createReplicaInPipeline(ExtendedBlock block)
public Replica createReplicaInPipeline(
FsVolumeSpi volume, ExtendedBlock block) throws IOException {
FsVolumeImpl vol = (FsVolumeImpl) volume;
ReplicaInPipeline rip = new ReplicaInPipeline(
LocalReplicaInPipeline rip = new LocalReplicaInPipeline(
block.getBlockId(), block.getGenerationStamp(), volume,
vol.createTmpFile(
block.getBlockPoolId(), block.getLocalBlock()).getParentFile(),
@ -305,9 +305,11 @@ public Replica createReplicaWaitingToBeRecovered(
FsVolumeImpl vol = (FsVolumeImpl) volume;
final String bpid = eb.getBlockPoolId();
final Block block = eb.getLocalBlock();
ReplicaWaitingToBeRecovered rwbr =
new ReplicaWaitingToBeRecovered(eb.getLocalBlock(), volume,
vol.createRbwFile(bpid, block).getParentFile());
ReplicaInfo rwbr = new ReplicaBuilder(ReplicaState.RWR)
.setBlock(eb.getLocalBlock())
.setFsVolume(volume)
.setDirectoryToUse(vol.createRbwFile(bpid, block).getParentFile())
.build();
dataset.volumeMap.add(bpid, rwbr);
return rwbr;
}
@ -354,6 +356,7 @@ public void injectCorruptReplica(ExtendedBlock block) throws IOException {
"Meta file " + metaFile + " already exists."
);
}
dataset.volumeMap.add(block.getBlockPoolId(), finalized);
}
}
@ -379,25 +382,21 @@ public long getRawCapacity() throws IOException {
@Override
public long getStoredDataLength(ExtendedBlock block) throws IOException {
File f = getBlockFile(block);
try (RandomAccessFile raf = new RandomAccessFile(f, "r")) {
return raf.length();
}
ReplicaInfo r = getBlockFile(block);
return r.getBlockDataLength();
}
@Override
public long getStoredGenerationStamp(ExtendedBlock block) throws IOException {
File f = getBlockFile(block);
File dir = f.getParentFile();
File[] files = FileUtil.listFiles(dir);
return FsDatasetUtil.getGenerationStampFromFile(files, f);
ReplicaInfo r = getBlockFile(block);
return r.getGenerationStamp();
}
@Override
public void changeStoredGenerationStamp(
ExtendedBlock block, long newGenStamp) throws IOException {
File blockFile =
dataset.getBlockFile(block.getBlockPoolId(), block.getBlockId());
ReplicaInfo r = dataset.getReplicaInfo(block);
File blockFile = new File(r.getBlockURI());
File metaFile = FsDatasetUtil.findMetaFile(blockFile);
File newMetaFile = new File(
DatanodeUtil.getMetaName(blockFile.getAbsolutePath(), newGenStamp));

20
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetTestUtil.java
View File

@ -24,16 +24,16 @@
import java.nio.channels.FileLock;
import java.nio.channels.OverlappingFileLockException;
import java.util.Collection;
import java.util.Random;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.common.Storage;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.LocalReplica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException;
import org.apache.hadoop.hdfs.server.datanode.StorageLocation;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
import org.apache.hadoop.io.IOUtils;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;
@ -41,12 +41,21 @@
public class FsDatasetTestUtil {
public static File getFile(FsDatasetSpi<?> fsd, String bpid, long bid) {
return ((FsDatasetImpl)fsd).getFile(bpid, bid, false);
ReplicaInfo r;
try {
r = ((FsDatasetImpl)fsd).getReplicaInfo(bpid, bid);
return new File(r.getBlockURI());
} catch (ReplicaNotFoundException e) {
FsDatasetImpl.LOG.warn(String.format(
"Replica with id %d was not found in block pool %s.", bid, bpid), e);
}
return null;
}
public static File getBlockFile(FsDatasetSpi<?> fsd, String bpid, Block b
) throws IOException {
return ((FsDatasetImpl)fsd).getBlockFile(bpid, b.getBlockId());
ReplicaInfo r = ((FsDatasetImpl)fsd).getReplicaInfo(bpid, b.getBlockId());
return new File(r.getBlockURI());
}
public static File getMetaFile(FsDatasetSpi<?> fsd, String bpid, Block b)
@ -57,7 +66,8 @@ public static File getMetaFile(FsDatasetSpi<?> fsd, String bpid, Block b)
public static boolean breakHardlinksIfNeeded(FsDatasetSpi<?> fsd,
ExtendedBlock block) throws IOException {
final ReplicaInfo info = ((FsDatasetImpl)fsd).getReplicaInfo(block);
final LocalReplica info =
(LocalReplica) ((FsDatasetImpl)fsd).getReplicaInfo(block);
return info.breakHardLinksIfNeeded();
}

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestWriteToReplica.java
View File

@ -36,7 +36,7 @@
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.datanode.FsDatasetTestUtils;
import org.apache.hadoop.hdfs.server.datanode.ReplicaAlreadyExistsException;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipelineInterface;
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.fsdataset.FsDatasetSpi;
@ -483,7 +483,7 @@ private void testWriteToTemporary(FsDatasetImpl dataSet, ExtendedBlock[] blocks)
long newGenStamp = blocks[NON_EXISTENT].getGenerationStamp() * 10;
blocks[NON_EXISTENT].setGenerationStamp(newGenStamp);
try {
ReplicaInPipelineInterface replicaInfo =
ReplicaInPipeline replicaInfo =
dataSet.createTemporary(StorageType.DEFAULT, blocks[NON_EXISTENT]).getReplica();
Assert.assertTrue(replicaInfo.getGenerationStamp() == newGenStamp);
Assert.assertTrue(