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HDFS-6133. Add a feature for replica pinning so that a pinned replica will not be moved by Balancer/Mover. Contributed by zhaoyunjiong 

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Receiver.java
This commit is contained in:
Tsz-Wo Nicholas Sze 2015-02-11 15:09:29 -08:00
parent 2ca76df21a
commit 65a6cf47ec
21 changed files with 274 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -30,6 +30,9 @@ Release 2.7.0 - UNRELEASED
HDFS-7720. Quota by Storage Type API, tools and ClientNameNode Protocol
changes. (Xiaoyu Yao via Arpit Agarwal)
HDFS-6133. Add a feature for replica pinning so that a pinned replica
will not be moved by Balancer/Mover. (zhaoyunjiong via szetszwo)
IMPROVEMENTS
HDFS-7055. Add tracing to DFSInputStream (cmccabe)

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
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@ -781,4 +781,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
// 10 days
public static final long DFS_CLIENT_KEY_PROVIDER_CACHE_EXPIRY_DEFAULT =
TimeUnit.DAYS.toMillis(10);
public static final String DFS_DATANODE_BLOCK_PINNING_ENABLED =
"dfs.datanode.block-pinning.enabled";
public static final boolean DFS_DATANODE_BLOCK_PINNING_ENABLED_DEFAULT =
false;
}

22
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java
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@ -1442,11 +1442,13 @@ private boolean createBlockOutputStream(DatanodeInfo[] nodes,
ExtendedBlock blockCopy = new ExtendedBlock(block);
blockCopy.setNumBytes(blockSize);
boolean[] targetPinnings = getPinnings(nodes);
// send the request
new Sender(out).writeBlock(blockCopy, nodeStorageTypes[0], accessToken,
dfsClient.clientName, nodes, nodeStorageTypes, null, bcs,
nodes.length, block.getNumBytes(), bytesSent, newGS,
checksum4WriteBlock, cachingStrategy.get(), isLazyPersistFile);
checksum4WriteBlock, cachingStrategy.get(), isLazyPersistFile,
(targetPinnings == null ? false : targetPinnings[0]), targetPinnings);
// receive ack for connect
BlockOpResponseProto resp = BlockOpResponseProto.parseFrom(
@ -1534,6 +1536,24 @@ private boolean createBlockOutputStream(DatanodeInfo[] nodes,
}
}
private boolean[] getPinnings(DatanodeInfo[] nodes) {
if (favoredNodes == null) {
return null;
} else {
boolean[] pinnings = new boolean[nodes.length];
for (int i = 0; i < nodes.length; i++) {
pinnings[i] = false;
for (int j = 0; j < favoredNodes.length; j++) {
if (nodes[i].getXferAddrWithHostname().equals(favoredNodes[j])) {
pinnings[i] = true;
break;
}
}
}
return pinnings;
}
}
private LocatedBlock locateFollowingBlock(long start,
DatanodeInfo[] excludedNodes) throws IOException {
int retries = dfsClient.getConf().nBlockWriteLocateFollowingRetry;

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DistributedFileSystem.java
View File

@ -346,9 +346,10 @@ public FSDataOutputStream create(Path f, FsPermission permission,
* Progressable)} with the addition of favoredNodes that is a hint to
* where the namenode should place the file blocks.
* The favored nodes hint is not persisted in HDFS. Hence it may be honored
* at the creation time only. HDFS could move the blocks during balancing or
* replication, to move the blocks from favored nodes. A value of null means
* no favored nodes for this create
* at the creation time only. And with favored nodes, blocks will be pinned
* on the datanodes to prevent balancing move the block. HDFS could move the
* blocks during replication, to move the blocks from favored nodes. A value
* of null means no favored nodes for this create
*/
public HdfsDataOutputStream create(final Path f,
final FsPermission permission, final boolean overwrite,

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/DataTransferProtocol.java
View File

@ -92,6 +92,8 @@ public void readBlock(final ExtendedBlock blk,
* @param minBytesRcvd minimum number of bytes received.
* @param maxBytesRcvd maximum number of bytes received.
* @param latestGenerationStamp the latest generation stamp of the block.
* @param pinning whether to pin the block, so Balancer won't move it.
* @param targetPinnings whether to pin the block on target datanode
*/
public void writeBlock(final ExtendedBlock blk,
final StorageType storageType,
@ -107,7 +109,9 @@ public void writeBlock(final ExtendedBlock blk,
final long latestGenerationStamp,
final DataChecksum requestedChecksum,
final CachingStrategy cachingStrategy,
final boolean allowLazyPersist) throws IOException;
final boolean allowLazyPersist,
final boolean pinning,
final boolean[] targetPinnings) throws IOException;
/**
* Transfer a block to another datanode.
* The block stage must be

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Receiver.java
View File

@ -149,10 +149,12 @@ private void opWriteBlock(DataInputStream in) throws IOException {
(proto.hasCachingStrategy() ?
getCachingStrategy(proto.getCachingStrategy()) :
CachingStrategy.newDefaultStrategy()),
(proto.hasAllowLazyPersist() ? proto.getAllowLazyPersist() : false));
} finally {
if (traceScope != null) traceScope.close();
}
(proto.hasAllowLazyPersist() ? proto.getAllowLazyPersist() : false),
(proto.hasPinning() ? proto.getPinning(): false),
(PBHelper.convertBooleanList(proto.getTargetPinningsList())));
} finally {
if (traceScope != null) traceScope.close();
}
}
/** Receive {@link Op#TRANSFER_BLOCK} */

8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Sender.java
View File

@ -129,7 +129,9 @@ public void writeBlock(final ExtendedBlock blk,
final long latestGenerationStamp,
DataChecksum requestedChecksum,
final CachingStrategy cachingStrategy,
final boolean allowLazyPersist) throws IOException {
final boolean allowLazyPersist,
final boolean pinning,
final boolean[] targetPinnings) throws IOException {
ClientOperationHeaderProto header = DataTransferProtoUtil.buildClientHeader(
blk, clientName, blockToken);
@ -148,7 +150,9 @@ public void writeBlock(final ExtendedBlock blk,
.setLatestGenerationStamp(latestGenerationStamp)
.setRequestedChecksum(checksumProto)
.setCachingStrategy(getCachingStrategy(cachingStrategy))
.setAllowLazyPersist(allowLazyPersist);
.setAllowLazyPersist(allowLazyPersist)
.setPinning(pinning)
.addAllTargetPinnings(PBHelper.convert(targetPinnings, 1));
if (source != null) {
proto.setSource(PBHelper.convertDatanodeInfo(source));

21
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelper.java
View File

@ -2954,4 +2954,25 @@ public static FileEncryptionInfo convert(
ezKeyVersionName);
}
public static List<Boolean> convert(boolean[] targetPinnings, int idx) {
List<Boolean> pinnings = new ArrayList<Boolean>();
if (targetPinnings == null) {
pinnings.add(Boolean.FALSE);
} else {
for (; idx < targetPinnings.length; ++idx) {
pinnings.add(Boolean.valueOf(targetPinnings[idx]));
}
}
return pinnings;
}
public static boolean[] convertBooleanList(
List<Boolean> targetPinningsList) {
final boolean[] targetPinnings = new boolean[targetPinningsList.size()];
for (int i = 0; i < targetPinningsList.size(); i++) {
targetPinnings[i] = targetPinningsList.get(i);
}
return targetPinnings;
}
}

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

@ -132,6 +132,8 @@ class BlockReceiver implements Closeable {
private long lastResponseTime = 0;
private boolean isReplaceBlock = false;
private DataOutputStream replyOut = null;
private boolean pinning;
BlockReceiver(final ExtendedBlock block, final StorageType storageType,
final DataInputStream in,
@ -141,7 +143,8 @@ class BlockReceiver implements Closeable {
final String clientname, final DatanodeInfo srcDataNode,
final DataNode datanode, DataChecksum requestedChecksum,
CachingStrategy cachingStrategy,
final boolean allowLazyPersist) throws IOException {
final boolean allowLazyPersist,
final boolean pinning) throws IOException {
try{
this.block = block;
this.in = in;
@ -165,12 +168,14 @@ class BlockReceiver implements Closeable {
this.isTransfer = stage == BlockConstructionStage.TRANSFER_RBW
|| stage == BlockConstructionStage.TRANSFER_FINALIZED;
this.pinning = pinning;
if (LOG.isDebugEnabled()) {
LOG.debug(getClass().getSimpleName() + ": " + block
+ "\n isClient =" + isClient + ", clientname=" + clientname
+ "\n isDatanode=" + isDatanode + ", srcDataNode=" + srcDataNode
+ "\n inAddr=" + inAddr + ", myAddr=" + myAddr
+ "\n cachingStrategy = " + cachingStrategy
+ "\n pinning=" + pinning
);
}
@ -1287,6 +1292,11 @@ private void finalizeBlock(long startTime) throws IOException {
: 0;
block.setNumBytes(replicaInfo.getNumBytes());
datanode.data.finalizeBlock(block);
if (pinning) {
datanode.data.setPinning(block);
}
datanode.closeBlock(
block, DataNode.EMPTY_DEL_HINT, replicaInfo.getStorageUuid());
if (ClientTraceLog.isInfoEnabled() && isClient) {

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

@ -2117,7 +2117,7 @@ public void run() {
new Sender(out).writeBlock(b, targetStorageTypes[0], accessToken,
clientname, targets, targetStorageTypes, srcNode,
stage, 0, 0, 0, 0, blockSender.getChecksum(), cachingStrategy,
false);
false, false, null);
// send data & checksum
blockSender.sendBlock(out, unbufOut, null);

34
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiver.java
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@ -581,7 +581,9 @@ public void writeBlock(final ExtendedBlock block,
final long latestGenerationStamp,
DataChecksum requestedChecksum,
CachingStrategy cachingStrategy,
final boolean allowLazyPersist) throws IOException {
final boolean allowLazyPersist,
final boolean pinning,
final boolean[] targetPinnings) throws IOException {
previousOpClientName = clientname;
updateCurrentThreadName("Receiving block " + block);
final boolean isDatanode = clientname.length() == 0;
@ -594,14 +596,14 @@ public void writeBlock(final ExtendedBlock block,
throw new IOException(stage + " does not support multiple targets "
+ Arrays.asList(targets));
}
if (LOG.isDebugEnabled()) {
LOG.debug("opWriteBlock: stage=" + stage + ", clientname=" + clientname
+ "\n block =" + block + ", newGs=" + latestGenerationStamp
+ ", bytesRcvd=[" + minBytesRcvd + ", " + maxBytesRcvd + "]"
+ "\n targets=" + Arrays.asList(targets)
+ "; pipelineSize=" + pipelineSize + ", srcDataNode=" + srcDataNode
);
+ ", pinning=" + pinning);
LOG.debug("isDatanode=" + isDatanode
+ ", isClient=" + isClient
+ ", isTransfer=" + isTransfer);
@ -643,7 +645,7 @@ public void writeBlock(final ExtendedBlock block,
peer.getLocalAddressString(),
stage, latestGenerationStamp, minBytesRcvd, maxBytesRcvd,
clientname, srcDataNode, datanode, requestedChecksum,
cachingStrategy, allowLazyPersist);
cachingStrategy, allowLazyPersist, pinning);
storageUuid = blockReceiver.getStorageUuid();
} else {
@ -686,10 +688,19 @@ public void writeBlock(final ExtendedBlock block,
mirrorIn = new DataInputStream(unbufMirrorIn);
// Do not propagate allowLazyPersist to downstream DataNodes.
new Sender(mirrorOut).writeBlock(originalBlock, targetStorageTypes[0],
if (targetPinnings != null && targetPinnings.length > 0) {
new Sender(mirrorOut).writeBlock(originalBlock, targetStorageTypes[0],
blockToken, clientname, targets, targetStorageTypes, srcDataNode,
stage, pipelineSize, minBytesRcvd, maxBytesRcvd,
latestGenerationStamp, requestedChecksum, cachingStrategy, false);
latestGenerationStamp, requestedChecksum, cachingStrategy,
false, targetPinnings[0], targetPinnings);
} else {
new Sender(mirrorOut).writeBlock(originalBlock, targetStorageTypes[0],
blockToken, clientname, targets, targetStorageTypes, srcDataNode,
stage, pipelineSize, minBytesRcvd, maxBytesRcvd,
latestGenerationStamp, requestedChecksum, cachingStrategy,
false, false, targetPinnings);
}
mirrorOut.flush();
@ -949,7 +960,14 @@ public void copyBlock(final ExtendedBlock block,
}
}
if (datanode.data.getPinning(block)) {
String msg = "Not able to copy block " + block.getBlockId() + " " +
"to " + peer.getRemoteAddressString() + " because it's pinned ";
LOG.info(msg);
sendResponse(ERROR, msg);
}
if (!dataXceiverServer.balanceThrottler.acquire()) { // not able to start
String msg = "Not able to copy block " + block.getBlockId() + " " +
"to " + peer.getRemoteAddressString() + " because threads " +
@ -1109,7 +1127,7 @@ public void replaceBlock(final ExtendedBlock block,
proxyReply, proxySock.getRemoteSocketAddress().toString(),
proxySock.getLocalSocketAddress().toString(),
null, 0, 0, 0, "", null, datanode, remoteChecksum,
CachingStrategy.newDropBehind(), false);
CachingStrategy.newDropBehind(), false, false);
// receive a block
blockReceiver.receiveBlock(null, null, replyOut, null,

13
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/FsDatasetSpi.java
View File

@ -516,4 +516,17 @@ public void onCompleteLazyPersist(String bpId, long blockId,
*/
public ReplicaInfo moveBlockAcrossStorage(final ExtendedBlock block,
StorageType targetStorageType) throws IOException;
/**
* Set a block to be pinned on this datanode so that it cannot be moved
* by Balancer/Mover.
*
* It is a no-op when dfs.datanode.block-pinning.enabled is set to false.
*/
public void setPinning(ExtendedBlock block) throws IOException;
/**
* Check whether the block was pinned
*/
public boolean getPinning(ExtendedBlock block) throws IOException;
}

40
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
View File

@ -51,6 +51,10 @@
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.LocalFileSystem;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.ExtendedBlockId;
@ -242,6 +246,10 @@ public LengthInputStream getMetaDataInputStream(ExtendedBlock b)
// Used for synchronizing access to usage stats
private final Object statsLock = new Object();
final LocalFileSystem localFS;
private boolean blockPinningEnabled;
/**
* An FSDataset has a directory where it loads its data files.
*/
@ -301,6 +309,10 @@ public LengthInputStream getMetaDataInputStream(ExtendedBlock b)
lazyWriter = new Daemon(new LazyWriter(conf));
lazyWriter.start();
registerMBean(datanode.getDatanodeUuid());
localFS = FileSystem.getLocal(conf);
blockPinningEnabled = conf.getBoolean(
DFSConfigKeys.DFS_DATANODE_BLOCK_PINNING_ENABLED,
DFSConfigKeys.DFS_DATANODE_BLOCK_PINNING_ENABLED_DEFAULT);
}
private void addVolume(Collection<StorageLocation> dataLocations,
@ -2870,5 +2882,33 @@ public void stop() {
shouldRun = false;
}
}
@Override
public void setPinning(ExtendedBlock block) throws IOException {
if (!blockPinningEnabled) {
return;
}
File f = getBlockFile(block);
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 boolean getPinning(ExtendedBlock block) throws IOException {
if (!blockPinningEnabled) {
return false;
}
File f = getBlockFile(block);
FileStatus fss = localFS.getFileStatus(new Path(f.getAbsolutePath()));
return fss.getPermission().getStickyBit();
}
}

3
hadoop-hdfs-project/hadoop-hdfs/src/main/proto/datatransfer.proto
View File

@ -123,6 +123,9 @@ message OpWriteBlockProto {
* to ignore this hint.
*/
optional bool allowLazyPersist = 13 [default = false];
//whether to pin the block, so Balancer won't move it.
optional bool pinning = 14 [default = false];
repeated bool targetPinnings = 15;
}
message OpTransferBlockProto {

6
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
View File

@ -2235,4 +2235,10 @@
</description>
</property>
<property>
<name>dfs.datanode.block-pinning.enabled</name>
<value>false</value>
<description>Whether pin blocks on favored DataNode.</description>
</property>
</configuration>

27
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java
View File

@ -317,13 +317,21 @@ public static void createFile(FileSystem fs, Path fileName, long fileLen,
public static void createFile(FileSystem fs, Path fileName, int bufferLen,
long fileLen, long blockSize, short replFactor, long seed)
throws IOException {
createFile(fs, fileName, false, bufferLen, fileLen, blockSize,
replFactor, seed, false);
createFile(fs, fileName, false, bufferLen, fileLen, blockSize, replFactor,
seed, false);
}
public static void createFile(FileSystem fs, Path fileName,
boolean isLazyPersist, int bufferLen, long fileLen, long blockSize,
short replFactor, long seed, boolean flush) throws IOException {
createFile(fs, fileName, isLazyPersist, bufferLen, fileLen, blockSize,
replFactor, seed, flush, null);
}
public static void createFile(FileSystem fs, Path fileName,
boolean isLazyPersist, int bufferLen, long fileLen, long blockSize,
short replFactor, long seed, boolean flush,
InetSocketAddress[] favoredNodes) throws IOException {
assert bufferLen > 0;
if (!fs.mkdirs(fileName.getParent())) {
throw new IOException("Mkdirs failed to create " +
@ -336,10 +344,19 @@ public static void createFile(FileSystem fs, Path fileName,
createFlags.add(LAZY_PERSIST);
}
try {
out = fs.create(fileName, FsPermission.getFileDefault(), createFlags,
fs.getConf().getInt(CommonConfigurationKeys.IO_FILE_BUFFER_SIZE_KEY, 4096),
if (favoredNodes == null) {
out = fs.create(
fileName,
FsPermission.getFileDefault(),
createFlags,
fs.getConf().getInt(
CommonConfigurationKeys.IO_FILE_BUFFER_SIZE_KEY, 4096),
replFactor, blockSize, null);
} else {
out = ((DistributedFileSystem) fs).create(fileName,
FsPermission.getDefault(), true, bufferLen, replFactor, blockSize,
null, favoredNodes);
}
if (fileLen > 0) {
byte[] toWrite = new byte[bufferLen];
Random rb = new Random(seed);

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

@ -534,6 +534,6 @@ void writeBlock(ExtendedBlock block, BlockConstructionStage stage,
BlockTokenSecretManager.DUMMY_TOKEN, "cl",
new DatanodeInfo[1], new StorageType[1], null, stage,
0, block.getNumBytes(), block.getNumBytes(), newGS,
checksum, CachingStrategy.newDefaultStrategy(), false);
checksum, CachingStrategy.newDefaultStrategy(), false, false, null);
}
}

71
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
View File

@ -17,12 +17,7 @@
*/
package org.apache.hadoop.hdfs.server.balancer;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_SIZE_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_LAZY_WRITER_INTERVAL_SEC;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_RAM_DISK_LOW_WATERMARK_BYTES;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LAZY_PERSIST_FILE_SCRUB_INTERVAL_SEC;
import static org.apache.hadoop.hdfs.DFSConfigKeys.*;
import static org.apache.hadoop.hdfs.StorageType.DEFAULT;
import static org.apache.hadoop.hdfs.StorageType.RAM_DISK;
import static org.junit.Assert.assertEquals;
@ -33,6 +28,7 @@
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URI;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
@ -59,12 +55,8 @@
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.NameNodeProxies;
import org.apache.hadoop.hdfs.StorageType;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.*;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.server.balancer.Balancer.Cli;
import org.apache.hadoop.hdfs.server.balancer.Balancer.Parameters;
import org.apache.hadoop.hdfs.server.balancer.Balancer.Result;
@ -309,6 +301,63 @@ static void waitForBalancer(long totalUsedSpace, long totalCapacity,
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p, 0);
}
/**
* Make sure that balancer can't move pinned blocks.
* If specified favoredNodes when create file, blocks will be pinned use
* sticky bit.
* @throws Exception
*/
@Test(timeout=100000)
public void testBalancerWithPinnedBlocks() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
conf.setBoolean(DFS_DATANODE_BLOCK_PINNING_ENABLED, true);
long[] capacities = new long[] { CAPACITY, CAPACITY };
String[] racks = { RACK0, RACK1 };
int numOfDatanodes = capacities.length;
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(capacities.length)
.hosts(new String[]{"localhost", "localhost"})
.racks(racks).simulatedCapacities(capacities).build();
try {
cluster.waitActive();
client = NameNodeProxies.createProxy(conf,
cluster.getFileSystem(0).getUri(), ClientProtocol.class).getProxy();
// fill up the cluster to be 80% full
long totalCapacity = sum(capacities);
long totalUsedSpace = totalCapacity * 8 / 10;
InetSocketAddress[] favoredNodes = new InetSocketAddress[numOfDatanodes];
for (int i = 0; i < favoredNodes.length; i++) {
favoredNodes[i] = cluster.getDataNodes().get(i).getXferAddress();
}
DFSTestUtil.createFile(cluster.getFileSystem(0), filePath, false, 1024,
totalUsedSpace / numOfDatanodes, DEFAULT_BLOCK_SIZE,
(short) numOfDatanodes, 0, false, favoredNodes);
// start up an empty node with the same capacity
cluster.startDataNodes(conf, 1, true, null, new String[] { RACK2 },
new long[] { CAPACITY });
totalCapacity += CAPACITY;
// run balancer and validate results
waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
// start rebalancing
Collection<URI> namenodes = DFSUtil.getNsServiceRpcUris(conf);
int r = Balancer.run(namenodes, Balancer.Parameters.DEFAULT, conf);
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
} finally {
cluster.shutdown();
}
}
/**
* Wait until balanced: each datanode gives utilization within
* BALANCE_ALLOWED_VARIANCE of average

11
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java
View File

@ -128,6 +128,7 @@ private class BInfo implements ReplicaInPipelineInterface {
SimulatedOutputStream oStream = null;
private long bytesAcked;
private long bytesRcvd;
private boolean pinned = false;
BInfo(String bpid, Block b, boolean forWriting) throws IOException {
theBlock = new Block(b);
if (theBlock.getNumBytes() < 0) {
@ -1275,5 +1276,15 @@ public ReplicaInfo moveBlockAcrossStorage(ExtendedBlock block,
// TODO Auto-generated method stub
return null;
}
@Override
public void setPinning(ExtendedBlock b) throws IOException {
blockMap.get(b.getBlockPoolId()).get(b.getLocalBlock()).pinned = true;
}
@Override
public boolean getPinning(ExtendedBlock b) throws IOException {
return blockMap.get(b.getBlockPoolId()).get(b.getLocalBlock()).pinned;
}
}

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

@ -152,7 +152,7 @@ public void testReplicationError() throws Exception {
BlockTokenSecretManager.DUMMY_TOKEN, "",
new DatanodeInfo[0], new StorageType[0], null,
BlockConstructionStage.PIPELINE_SETUP_CREATE, 1, 0L, 0L, 0L,
checksum, CachingStrategy.newDefaultStrategy(), false);
checksum, CachingStrategy.newDefaultStrategy(), false, false, null);
out.flush();
// close the connection before sending the content of the block

9
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalDatasetImpl.java
View File

@ -406,4 +406,13 @@ public long getNumBlocksFailedToCache() {
public long getNumBlocksFailedToUncache() {
return 0;
}
@Override
public void setPinning(ExtendedBlock block) throws IOException {
}
@Override
public boolean getPinning(ExtendedBlock block) throws IOException {
return false;
}
}