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HDFS-395. DFS Scalability: Incremental block reports. Contributed by Tomasz Nykiel. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1161992 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Hairong Kuang 2011-08-26 04:46:42 +00:00
parent e680023f8b
commit 73451ed2d9
11 changed files with 295 additions and 119 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -2,7 +2,7 @@ Hadoop HDFS Change Log
Trunk (unreleased changes)
NEW FEATURES
HDFS-349. DFS Scalability: Incremental block reports. (Tomasz Nykiel
HDFS-395. DFS Scalability: Incremental block reports. (Tomasz Nykiel
via hairong)
Release 0.23.0 - Unreleased

52
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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@ -59,10 +59,12 @@ import org.apache.hadoop.hdfs.server.namenode.INodeFile;
import org.apache.hadoop.hdfs.server.namenode.INodeFileUnderConstruction;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.hdfs.server.namenode.Namesystem;
import org.apache.hadoop.hdfs.server.protocol.BlockCommand;
import org.apache.hadoop.hdfs.server.protocol.BlocksWithLocations;
import org.apache.hadoop.hdfs.server.protocol.BlocksWithLocations.BlockWithLocations;
import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
import org.apache.hadoop.hdfs.server.protocol.KeyUpdateCommand;
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
import org.apache.hadoop.net.Node;
import org.apache.hadoop.util.Daemon;
@ -2002,7 +2004,7 @@ public class BlockManager {
* Modify (block-->datanode) map. Possibly generate replication tasks, if the
* removed block is still valid.
*/
private void removeStoredBlock(Block block, DatanodeDescriptor node) {
public void removeStoredBlock(Block block, DatanodeDescriptor node) {
if(NameNode.stateChangeLog.isDebugEnabled()) {
NameNode.stateChangeLog.debug("BLOCK* removeStoredBlock: "
+ block + " from " + node.getName());
@ -2121,27 +2123,48 @@ public class BlockManager {
}
}
/** The given node is reporting that it received a certain block. */
public void blockReceived(final DatanodeID nodeID, final String poolId,
final Block block, final String delHint) throws IOException {
/** The given node is reporting that it received/deleted certain blocks. */
public void blockReceivedAndDeleted(final DatanodeID nodeID,
final String poolId,
final ReceivedDeletedBlockInfo receivedAndDeletedBlocks[]
) throws IOException {
namesystem.writeLock();
int received = 0;
int deleted = 0;
try {
final DatanodeDescriptor node = datanodeManager.getDatanode(nodeID);
if (node == null || !node.isAlive) {
final String s = block + " is received from dead or unregistered node "
+ nodeID.getName();
NameNode.stateChangeLog.warn("BLOCK* blockReceived: " + s);
throw new IOException(s);
}
if (NameNode.stateChangeLog.isDebugEnabled()) {
NameNode.stateChangeLog.debug("BLOCK* blockReceived: " + block
+ " is received from " + nodeID.getName());
NameNode.stateChangeLog
.warn("BLOCK* blockReceivedDeleted"
+ " is received from dead or unregistered node "
+ nodeID.getName());
throw new IOException(
"Got blockReceivedDeleted message from unregistered or dead node");
}
addBlock(node, block, delHint);
for (int i = 0; i < receivedAndDeletedBlocks.length; i++) {
if (receivedAndDeletedBlocks[i].isDeletedBlock()) {
removeStoredBlock(
receivedAndDeletedBlocks[i].getBlock(), node);
deleted++;
} else {
addBlock(node, receivedAndDeletedBlocks[i].getBlock(),
receivedAndDeletedBlocks[i].getDelHints());
received++;
}
if (NameNode.stateChangeLog.isDebugEnabled()) {
NameNode.stateChangeLog.debug("BLOCK* block"
+ (receivedAndDeletedBlocks[i].isDeletedBlock() ? "Deleted"
: "Received") + ": " + receivedAndDeletedBlocks[i].getBlock()
+ " is received from " + nodeID.getName());
}
}
} finally {
namesystem.writeUnlock();
NameNode.stateChangeLog
.debug("*BLOCK* NameNode.blockReceivedAndDeleted: " + "from "
+ nodeID.getName() + " received: " + received + ", "
+ " deleted: " + deleted);
}
}
@ -2316,6 +2339,7 @@ public class BlockManager {
}
public void removeBlock(Block block) {
block.setNumBytes(BlockCommand.NO_ACK);
addToInvalidates(block);
corruptReplicas.removeFromCorruptReplicasMap(block);
blocksMap.removeBlock(block);

130
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -106,6 +106,7 @@ import org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException;
import org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol;
import org.apache.hadoop.hdfs.server.protocol.KeyUpdateCommand;
import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
import org.apache.hadoop.hdfs.server.protocol.BalancerBandwidthCommand;
@ -348,6 +349,8 @@ public class DataNode extends Configured
ThreadGroup threadGroup = null;
long blockReportInterval;
boolean resetBlockReportTime = true;
long deleteReportInterval;
long lastDeletedReport = 0;
long initialBlockReportDelay = DFS_BLOCKREPORT_INTERVAL_MSEC_DEFAULT * 1000L;
long heartBeatInterval;
private boolean heartbeatsDisabledForTests = false;
@ -458,6 +461,7 @@ public class DataNode extends Configured
this.heartBeatInterval = conf.getLong(DFS_HEARTBEAT_INTERVAL_KEY,
DFS_HEARTBEAT_INTERVAL_DEFAULT) * 1000L;
this.deleteReportInterval = 100 * heartBeatInterval;
// do we need to sync block file contents to disk when blockfile is closed?
this.syncOnClose = conf.getBoolean(DFS_DATANODE_SYNCONCLOSE_KEY,
DFS_DATANODE_SYNCONCLOSE_DEFAULT);
@ -643,6 +647,17 @@ public class DataNode extends Configured
}
}
// calls specific to BP
protected void notifyNamenodeDeletedBlock(ExtendedBlock block) {
BPOfferService bpos = blockPoolManager.get(block.getBlockPoolId());
if (bpos != null) {
bpos.notifyNamenodeDeletedBlock(block);
} else {
LOG.warn("Cannot find BPOfferService for reporting block deleted for bpid="
+ block.getBlockPoolId());
}
}
public void reportBadBlocks(ExtendedBlock block) throws IOException{
BPOfferService bpos = blockPoolManager.get(block.getBlockPoolId());
if(bpos == null || bpos.bpNamenode == null) {
@ -677,8 +692,9 @@ public class DataNode extends Configured
private String blockPoolId;
private long lastHeartbeat = 0;
private volatile boolean initialized = false;
private final LinkedList<Block> receivedBlockList = new LinkedList<Block>();
private final LinkedList<String> delHints = new LinkedList<String>();
private final LinkedList<ReceivedDeletedBlockInfo> receivedAndDeletedBlockList
= new LinkedList<ReceivedDeletedBlockInfo>();
private volatile int pendingReceivedRequests = 0;
private volatile boolean shouldServiceRun = true;
private boolean isBlockTokenInitialized = false;
UpgradeManagerDatanode upgradeManager = null;
@ -848,41 +864,33 @@ public class DataNode extends Configured
/**
* Report received blocks and delete hints to the Namenode
*
* @throws IOException
*/
private void reportReceivedBlocks() throws IOException {
//check if there are newly received blocks
Block [] blockArray=null;
String [] delHintArray=null;
synchronized(receivedBlockList) {
synchronized(delHints){
int numBlocks = receivedBlockList.size();
if (numBlocks > 0) {
if(numBlocks!=delHints.size()) {
LOG.warn("Panic: receiveBlockList and delHints are not of " +
"the same length" );
}
//
// Send newly-received blockids to namenode
//
blockArray = receivedBlockList.toArray(new Block[numBlocks]);
delHintArray = delHints.toArray(new String[numBlocks]);
}
private void reportReceivedDeletedBlocks() throws IOException {
// check if there are newly received blocks
ReceivedDeletedBlockInfo[] receivedAndDeletedBlockArray = null;
int currentReceivedRequestsCounter;
synchronized (receivedAndDeletedBlockList) {
currentReceivedRequestsCounter = pendingReceivedRequests;
int numBlocks = receivedAndDeletedBlockList.size();
if (numBlocks > 0) {
//
// Send newly-received and deleted blockids to namenode
//
receivedAndDeletedBlockArray = receivedAndDeletedBlockList
.toArray(new ReceivedDeletedBlockInfo[numBlocks]);
}
}
if (blockArray != null) {
if(delHintArray == null || delHintArray.length != blockArray.length ) {
LOG.warn("Panic: block array & delHintArray are not the same" );
}
bpNamenode.blockReceived(bpRegistration, blockPoolId, blockArray,
delHintArray);
synchronized(receivedBlockList) {
synchronized(delHints){
for(int i=0; i<blockArray.length; i++) {
receivedBlockList.remove(blockArray[i]);
delHints.remove(delHintArray[i]);
}
if (receivedAndDeletedBlockArray != null) {
bpNamenode.blockReceivedAndDeleted(bpRegistration, blockPoolId,
receivedAndDeletedBlockArray);
synchronized (receivedAndDeletedBlockList) {
for (int i = 0; i < receivedAndDeletedBlockArray.length; i++) {
receivedAndDeletedBlockList.remove(receivedAndDeletedBlockArray[i]);
}
pendingReceivedRequests -= currentReceivedRequestsCounter;
}
}
}
@ -893,23 +901,39 @@ public class DataNode extends Configured
* client? For now we don't.
*/
void notifyNamenodeReceivedBlock(ExtendedBlock block, String delHint) {
if(block==null || delHint==null) {
throw new IllegalArgumentException(
block==null?"Block is null":"delHint is null");
if (block == null || delHint == null) {
throw new IllegalArgumentException(block == null ? "Block is null"
: "delHint is null");
}
if (!block.getBlockPoolId().equals(blockPoolId)) {
LOG.warn("BlockPool mismatch " + block.getBlockPoolId() +
" vs. " + blockPoolId);
LOG.warn("BlockPool mismatch " + block.getBlockPoolId() + " vs. "
+ blockPoolId);
return;
}
synchronized (receivedBlockList) {
synchronized (delHints) {
receivedBlockList.add(block.getLocalBlock());
delHints.add(delHint);
receivedBlockList.notifyAll();
}
synchronized (receivedAndDeletedBlockList) {
receivedAndDeletedBlockList.add(new ReceivedDeletedBlockInfo(block
.getLocalBlock(), delHint));
pendingReceivedRequests++;
receivedAndDeletedBlockList.notifyAll();
}
}
void notifyNamenodeDeletedBlock(ExtendedBlock block) {
if (block == null) {
throw new IllegalArgumentException("Block is null");
}
if (!block.getBlockPoolId().equals(blockPoolId)) {
LOG.warn("BlockPool mismatch " + block.getBlockPoolId() + " vs. "
+ blockPoolId);
return;
}
synchronized (receivedAndDeletedBlockList) {
receivedAndDeletedBlockList.add(new ReceivedDeletedBlockInfo(block
.getLocalBlock(), ReceivedDeletedBlockInfo.TODELETE_HINT));
}
}
@ -1027,7 +1051,8 @@ public class DataNode extends Configured
* forever calling remote NameNode functions.
*/
private void offerService() throws Exception {
LOG.info("For namenode " + nnAddr + " using BLOCKREPORT_INTERVAL of "
LOG.info("For namenode " + nnAddr + " using DELETEREPORT_INTERVAL of "
+ deleteReportInterval + " msec " + " BLOCKREPORT_INTERVAL of "
+ blockReportInterval + "msec" + " Initial delay: "
+ initialBlockReportDelay + "msec" + "; heartBeatInterval="
+ heartBeatInterval);
@ -1058,8 +1083,11 @@ public class DataNode extends Configured
continue;
}
}
reportReceivedBlocks();
if (pendingReceivedRequests > 0
|| (startTime - lastDeletedReport > deleteReportInterval)) {
reportReceivedDeletedBlocks();
lastDeletedReport = startTime;
}
DatanodeCommand cmd = blockReport();
processCommand(cmd);
@ -1075,10 +1103,10 @@ public class DataNode extends Configured
//
long waitTime = heartBeatInterval -
(System.currentTimeMillis() - lastHeartbeat);
synchronized(receivedBlockList) {
if (waitTime > 0 && receivedBlockList.size() == 0) {
synchronized(receivedAndDeletedBlockList) {
if (waitTime > 0 && pendingReceivedRequests == 0) {
try {
receivedBlockList.wait(waitTime);
receivedAndDeletedBlockList.wait(waitTime);
} catch (InterruptedException ie) {
LOG.warn("BPOfferService for block pool="
+ this.getBlockPoolId() + " received exception:" + ie);

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

@ -1182,7 +1182,7 @@ public class FSDataset implements FSDatasetInterface {
for (int idx = 0; idx < storage.getNumStorageDirs(); idx++) {
roots[idx] = storage.getStorageDir(idx).getCurrentDir();
}
asyncDiskService = new FSDatasetAsyncDiskService(roots);
asyncDiskService = new FSDatasetAsyncDiskService(this, roots);
registerMBean(storage.getStorageID());
}
@ -2089,15 +2089,19 @@ public class FSDataset implements FSDatasetInterface {
}
File metaFile = getMetaFile(f, invalidBlks[i].getGenerationStamp());
long dfsBytes = f.length() + metaFile.length();
// Delete the block asynchronously to make sure we can do it fast enough
asyncDiskService.deleteAsync(v, bpid, f, metaFile, dfsBytes,
invalidBlks[i].toString());
asyncDiskService.deleteAsync(v, f, metaFile, dfsBytes,
new ExtendedBlock(bpid, invalidBlks[i]));
}
if (error) {
throw new IOException("Error in deleting blocks.");
}
}
public void notifyNamenodeDeletedBlock(ExtendedBlock block){
datanode.notifyNamenodeDeletedBlock(block);
}
/**
* Turn the block identifier into a filename; ignore generation stamp!!!

52
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FSDatasetAsyncDiskService.java
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@ -28,6 +28,8 @@ import java.util.concurrent.TimeUnit;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.protocol.BlockCommand;
/*
* This class is a container of multiple thread pools, each for a volume,
@ -47,6 +49,8 @@ import org.apache.commons.logging.LogFactory;
*/
class FSDatasetAsyncDiskService {
final FSDataset dataset;
public static final Log LOG = LogFactory.getLog(FSDatasetAsyncDiskService.class);
// ThreadPool core pool size
@ -70,8 +74,8 @@ class FSDatasetAsyncDiskService {
*
* @param volumes The roots of the data volumes.
*/
FSDatasetAsyncDiskService(File[] volumes) {
FSDatasetAsyncDiskService(FSDataset dataset, File[] volumes) {
this.dataset = dataset;
// Create one ThreadPool per volume
for (int v = 0 ; v < volumes.length; v++) {
final File vol = volumes[v];
@ -147,13 +151,12 @@ class FSDatasetAsyncDiskService {
* Delete the block file and meta file from the disk asynchronously, adjust
* dfsUsed statistics accordingly.
*/
void deleteAsync(FSDataset.FSVolume volume, String bpid, File blockFile,
File metaFile, long dfsBytes, String blockName) {
DataNode.LOG.info("Scheduling block " + blockName + " file " + blockFile
+ " for deletion");
ReplicaFileDeleteTask deletionTask =
new ReplicaFileDeleteTask(volume, bpid, blockFile, metaFile, dfsBytes,
blockName);
void deleteAsync(FSDataset.FSVolume volume, File blockFile, File metaFile,
long dfsBytes, ExtendedBlock block) {
DataNode.LOG.info("Scheduling block " + block.getLocalBlock().toString()
+ " file " + blockFile + " for deletion");
ReplicaFileDeleteTask deletionTask = new ReplicaFileDeleteTask(dataset,
volume, blockFile, metaFile, dfsBytes, block);
execute(volume.getCurrentDir(), deletionTask);
}
@ -161,21 +164,21 @@ class FSDatasetAsyncDiskService {
* as decrement the dfs usage of the volume.
*/
static class ReplicaFileDeleteTask implements Runnable {
final FSDataset dataset;
final FSDataset.FSVolume volume;
final String blockPoolId;
final File blockFile;
final File metaFile;
final long dfsBytes;
final String blockName;
final ExtendedBlock block;
ReplicaFileDeleteTask(FSDataset.FSVolume volume, String bpid,
File blockFile, File metaFile, long dfsBytes, String blockName) {
ReplicaFileDeleteTask(FSDataset dataset, FSDataset.FSVolume volume, File blockFile,
File metaFile, long dfsBytes, ExtendedBlock block) {
this.dataset = dataset;
this.volume = volume;
this.blockPoolId = bpid;
this.blockFile = blockFile;
this.metaFile = metaFile;
this.dfsBytes = dfsBytes;
this.blockName = blockName;
this.block = block;
}
FSDataset.FSVolume getVolume() {
@ -185,21 +188,24 @@ class FSDatasetAsyncDiskService {
@Override
public String toString() {
// Called in AsyncDiskService.execute for displaying error messages.
return "deletion of block " + blockPoolId + " " + blockName
+ " with block file " + blockFile + " and meta file " + metaFile
+ " from volume " + volume;
return "deletion of block " + block.getBlockPoolId() + " "
+ block.getLocalBlock().toString() + " with block file " + blockFile
+ " and meta file " + metaFile + " from volume " + volume;
}
@Override
public void run() {
if ( !blockFile.delete() || ( !metaFile.delete() && metaFile.exists() ) ) {
DataNode.LOG.warn("Unexpected error trying to delete block "
+ blockPoolId + " " + blockName + " at file " + blockFile
+ ". Ignored.");
+ block.getBlockPoolId() + " " + block.getLocalBlock().toString()
+ " at file " + blockFile + ". Ignored.");
} else {
volume.decDfsUsed(blockPoolId, dfsBytes);
DataNode.LOG.info("Deleted block " + blockPoolId + " " + blockName
+ " at file " + blockFile);
if(block.getLocalBlock().getNumBytes() != BlockCommand.NO_ACK){
dataset.notifyNamenodeDeletedBlock(block);
}
volume.decDfsUsed(block.getBlockPoolId(), dfsBytes);
DataNode.LOG.info("Deleted block " + block.getBlockPoolId() + " "
+ block.getLocalBlock().toString() + " at file " + blockFile);
}
}
};

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
View File

@ -83,6 +83,7 @@ import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
import org.apache.hadoop.hdfs.server.protocol.NamenodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
import org.apache.hadoop.hdfs.server.protocol.NodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
import org.apache.hadoop.hdfs.server.protocol.RemoteEditLogManifest;
import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
import org.apache.hadoop.io.EnumSetWritable;
@ -1209,17 +1210,16 @@ public class NameNode implements NamenodeProtocols {
}
@Override // DatanodeProtocol
public void blockReceived(DatanodeRegistration nodeReg, String poolId,
Block blocks[], String delHints[]) throws IOException {
public void blockReceivedAndDeleted(DatanodeRegistration nodeReg, String poolId,
ReceivedDeletedBlockInfo[] receivedAndDeletedBlocks) throws IOException {
verifyRequest(nodeReg);
if(stateChangeLog.isDebugEnabled()) {
stateChangeLog.debug("*BLOCK* NameNode.blockReceived: "
+"from "+nodeReg.getName()+" "+blocks.length+" blocks.");
}
for (int i = 0; i < blocks.length; i++) {
namesystem.getBlockManager().blockReceived(
nodeReg, poolId, blocks[i], delHints[i]);
stateChangeLog.debug("*BLOCK* NameNode.blockReceivedAndDeleted: "
+"from "+nodeReg.getName()+" "+receivedAndDeletedBlocks.length
+" blocks.");
}
namesystem.getBlockManager().blockReceivedAndDeleted(
nodeReg, poolId, receivedAndDeletedBlocks);
}
@Override // DatanodeProtocol

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/BlockCommand.java
View File

@ -44,6 +44,16 @@ import org.apache.hadoop.io.WritableFactory;
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class BlockCommand extends DatanodeCommand {
/**
* This constant is used to indicate that the block deletion does not need
* explicit ACK from the datanode. When a block is put into the list of blocks
* to be deleted, it's size is set to this constant. We assume that no block
* would actually have this size. Otherwise, we would miss ACKs for blocks
* with such size. Positive number is used for compatibility reasons.
*/
public static final long NO_ACK = Long.MAX_VALUE;
String poolId;
Block blocks[];
DatanodeInfo targets[][];

14
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/DatanodeProtocol.java
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@ -126,17 +126,19 @@ public interface DatanodeProtocol extends VersionedProtocol {
long[] blocks) throws IOException;
/**
* blockReceived() allows the DataNode to tell the NameNode about
* recently-received block data, with a hint for pereferred replica
* to be deleted when there is any excessive blocks.
* blockReceivedAndDeleted() allows the DataNode to tell the NameNode about
* recently-received and -deleted block data.
*
* For the case of received blocks, a hint for preferred replica to be
* deleted when there is any excessive blocks is provided.
* For example, whenever client code
* writes a new Block here, or another DataNode copies a Block to
* this DataNode, it will call blockReceived().
*/
public void blockReceived(DatanodeRegistration registration,
public void blockReceivedAndDeleted(DatanodeRegistration registration,
String poolId,
Block blocks[],
String[] delHints) throws IOException;
ReceivedDeletedBlockInfo[] receivedAndDeletedBlocks)
throws IOException;
/**
* errorReport() tells the NameNode about something that has gone

101
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/ReceivedDeletedBlockInfo.java Normal file
View File

@ -0,0 +1,101 @@
/**
* 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.protocol;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
/**
* A data structure to store Block and delHints together, used to send
* received/deleted ACKs.
*/
public class ReceivedDeletedBlockInfo implements Writable {
Block block;
String delHints;
public final static String TODELETE_HINT = "-";
public ReceivedDeletedBlockInfo() {
}
public ReceivedDeletedBlockInfo(Block blk, String delHints) {
this.block = blk;
this.delHints = delHints;
}
public Block getBlock() {
return this.block;
}
public void setBlock(Block blk) {
this.block = blk;
}
public String getDelHints() {
return this.delHints;
}
public void setDelHints(String hints) {
this.delHints = hints;
}
public boolean equals(Object o) {
if (!(o instanceof ReceivedDeletedBlockInfo)) {
return false;
}
ReceivedDeletedBlockInfo other = (ReceivedDeletedBlockInfo) o;
return this.block.equals(other.getBlock())
&& this.delHints.equals(other.delHints);
}
public int hashCode() {
assert false : "hashCode not designed";
return 0;
}
public boolean blockEquals(Block b) {
return this.block.equals(b);
}
public boolean isDeletedBlock() {
return delHints.equals(TODELETE_HINT);
}
@Override
public void write(DataOutput out) throws IOException {
this.block.write(out);
Text.writeString(out, this.delHints);
}
@Override
public void readFields(DataInput in) throws IOException {
this.block = new Block();
this.block.readFields(in);
this.delHints = Text.readString(in);
}
public String toString() {
return block.toString() + ", delHint: " + delHints;
}
}

18
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NNThroughputBenchmark.java
View File

@ -47,6 +47,7 @@ import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.io.EnumSetWritable;
@ -877,10 +878,10 @@ public class NNThroughputBenchmark {
receivedDNReg.setStorageInfo(
new DataStorage(nsInfo, dnInfo.getStorageID()));
receivedDNReg.setInfoPort(dnInfo.getInfoPort());
nameNode.blockReceived( receivedDNReg,
nameNode.getNamesystem().getBlockPoolId(),
new Block[] {blocks[i]},
new String[] {DataNode.EMPTY_DEL_HINT});
nameNode.blockReceivedAndDeleted(receivedDNReg, nameNode
.getNamesystem().getBlockPoolId(),
new ReceivedDeletedBlockInfo[] { new ReceivedDeletedBlockInfo(
blocks[i], DataNode.EMPTY_DEL_HINT) });
}
}
return blocks.length;
@ -992,11 +993,10 @@ public class NNThroughputBenchmark {
for(DatanodeInfo dnInfo : loc.getLocations()) {
int dnIdx = Arrays.binarySearch(datanodes, dnInfo.getName());
datanodes[dnIdx].addBlock(loc.getBlock().getLocalBlock());
nameNode.blockReceived(
datanodes[dnIdx].dnRegistration,
loc.getBlock().getBlockPoolId(),
new Block[] {loc.getBlock().getLocalBlock()},
new String[] {""});
nameNode.blockReceivedAndDeleted(datanodes[dnIdx].dnRegistration, loc
.getBlock().getBlockPoolId(),
new ReceivedDeletedBlockInfo[] { new ReceivedDeletedBlockInfo(loc
.getBlock().getLocalBlock(), "") });
}
}
return prevBlock;

7
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestDeadDatanode.java
View File

@ -36,6 +36,7 @@ import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
import org.junit.After;
import org.junit.Test;
@ -104,12 +105,12 @@ public class TestDeadDatanode {
DatanodeProtocol dnp = cluster.getNameNode();
Block[] blocks = new Block[] { new Block(0) };
String[] delHints = new String[] { "" };
ReceivedDeletedBlockInfo[] blocks = { new ReceivedDeletedBlockInfo(
new Block(0), "") };
// Ensure blockReceived call from dead datanode is rejected with IOException
try {
dnp.blockReceived(reg, poolId, blocks, delHints);
dnp.blockReceivedAndDeleted(reg, poolId, blocks);
Assert.fail("Expected IOException is not thrown");
} catch (IOException ex) {
// Expected