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HDFS-3150. Add option for clients to contact DNs via hostname. Contributed by Eli Collins 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1373143 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Eli Collins 2012-08-14 22:15:57 +00:00
parent 2964cc0f59
commit 3cdd6a9a2d
24 changed files with 291 additions and 92 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -26,6 +26,8 @@ Release 2.0.1-alpha - UNRELEASED
HDFS-3637. Add support for encrypting the DataTransferProtocol. (atm)
HDFS-3150. Add option for clients to contact DNs via hostname. (eli)
IMPROVEMENTS
HDFS-3390. DFSAdmin should print full stack traces of errors when DEBUG

17
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/BlockReaderLocal.java
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@ -86,11 +86,11 @@ class BlockReaderLocal implements BlockReader {
}
private synchronized ClientDatanodeProtocol getDatanodeProxy(
DatanodeInfo node, Configuration conf, int socketTimeout)
throws IOException {
DatanodeInfo node, Configuration conf, int socketTimeout,
boolean connectToDnViaHostname) throws IOException {
if (proxy == null) {
proxy = DFSUtil.createClientDatanodeProtocolProxy(node, conf,
socketTimeout);
socketTimeout, connectToDnViaHostname);
}
return proxy;
}
@ -156,14 +156,16 @@ class BlockReaderLocal implements BlockReader {
*/
static BlockReaderLocal newBlockReader(Configuration conf, String file,
ExtendedBlock blk, Token<BlockTokenIdentifier> token, DatanodeInfo node,
int socketTimeout, long startOffset, long length) throws IOException {
int socketTimeout, long startOffset, long length,
boolean connectToDnViaHostname) throws IOException {
LocalDatanodeInfo localDatanodeInfo = getLocalDatanodeInfo(node
.getIpcPort());
// check the cache first
BlockLocalPathInfo pathinfo = localDatanodeInfo.getBlockLocalPathInfo(blk);
if (pathinfo == null) {
pathinfo = getBlockPathInfo(blk, node, conf, socketTimeout, token);
pathinfo = getBlockPathInfo(blk, node, conf, socketTimeout, token,
connectToDnViaHostname);
}
// check to see if the file exists. It may so happen that the
@ -241,11 +243,12 @@ class BlockReaderLocal implements BlockReader {
private static BlockLocalPathInfo getBlockPathInfo(ExtendedBlock blk,
DatanodeInfo node, Configuration conf, int timeout,
Token<BlockTokenIdentifier> token) throws IOException {
Token<BlockTokenIdentifier> token, boolean connectToDnViaHostname)
throws IOException {
LocalDatanodeInfo localDatanodeInfo = getLocalDatanodeInfo(node.getIpcPort());
BlockLocalPathInfo pathinfo = null;
ClientDatanodeProtocol proxy = localDatanodeInfo.getDatanodeProxy(node,
conf, timeout);
conf, timeout, connectToDnViaHostname);
try {
// make RPC to local datanode to find local pathnames of blocks
pathinfo = proxy.getBlockLocalPathInfo(blk, token);

33
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
View File

@ -49,6 +49,8 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_ENCRYPT_DATA_TRANSFER_DEF
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_ENCRYPT_DATA_TRANSFER_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_REPLICATION_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_REPLICATION_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_USE_DN_HOSTNAME;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_USE_DN_HOSTNAME_DEFAULT;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
@ -216,6 +218,7 @@ public class DFSClient implements java.io.Closeable {
final String taskId;
final FsPermission uMask;
final boolean useLegacyBlockReader;
final boolean connectToDnViaHostname;
Conf(Configuration conf) {
maxFailoverAttempts = conf.getInt(
@ -266,6 +269,8 @@ public class DFSClient implements java.io.Closeable {
useLegacyBlockReader = conf.getBoolean(
DFS_CLIENT_USE_LEGACY_BLOCKREADER,
DFS_CLIENT_USE_LEGACY_BLOCKREADER_DEFAULT);
connectToDnViaHostname = conf.getBoolean(DFS_CLIENT_USE_DN_HOSTNAME,
DFS_CLIENT_USE_DN_HOSTNAME_DEFAULT);
}
private int getChecksumType(Configuration conf) {
@ -476,6 +481,14 @@ public class DFSClient implements java.io.Closeable {
return clientName;
}
/**
* @return whether the client should use hostnames instead of IPs
* when connecting to DataNodes
*/
boolean connectToDnViaHostname() {
return dfsClientConf.connectToDnViaHostname;
}
void checkOpen() throws IOException {
if (!clientRunning) {
IOException result = new IOException("Filesystem closed");
@ -732,12 +745,12 @@ public class DFSClient implements java.io.Closeable {
*/
static BlockReader getLocalBlockReader(Configuration conf,
String src, ExtendedBlock blk, Token<BlockTokenIdentifier> accessToken,
DatanodeInfo chosenNode, int socketTimeout, long offsetIntoBlock)
throws InvalidToken, IOException {
DatanodeInfo chosenNode, int socketTimeout, long offsetIntoBlock,
boolean connectToDnViaHostname) throws InvalidToken, IOException {
try {
return BlockReaderLocal.newBlockReader(conf, src, blk, accessToken,
chosenNode, socketTimeout, offsetIntoBlock, blk.getNumBytes()
- offsetIntoBlock);
- offsetIntoBlock, connectToDnViaHostname);
} catch (RemoteException re) {
throw re.unwrapRemoteException(InvalidToken.class,
AccessControlException.class);
@ -1464,7 +1477,8 @@ public class DFSClient implements java.io.Closeable {
public MD5MD5CRC32FileChecksum getFileChecksum(String src) throws IOException {
checkOpen();
return getFileChecksum(src, namenode, socketFactory,
dfsClientConf.socketTimeout, getDataEncryptionKey());
dfsClientConf.socketTimeout, getDataEncryptionKey(),
dfsClientConf.connectToDnViaHostname);
}
@InterfaceAudience.Private
@ -1510,7 +1524,8 @@ public class DFSClient implements java.io.Closeable {
*/
public static MD5MD5CRC32FileChecksum getFileChecksum(String src,
ClientProtocol namenode, SocketFactory socketFactory, int socketTimeout,
DataEncryptionKey encryptionKey) throws IOException {
DataEncryptionKey encryptionKey, boolean connectToDnViaHostname)
throws IOException {
//get all block locations
LocatedBlocks blockLocations = callGetBlockLocations(namenode, src, 0, Long.MAX_VALUE);
if (null == blockLocations) {
@ -1548,9 +1563,11 @@ public class DFSClient implements java.io.Closeable {
try {
//connect to a datanode
sock = socketFactory.createSocket();
NetUtils.connect(sock,
NetUtils.createSocketAddr(datanodes[j].getXferAddr()),
timeout);
String dnAddr = datanodes[j].getXferAddr(connectToDnViaHostname);
if (LOG.isDebugEnabled()) {
LOG.debug("Connecting to datanode " + dnAddr);
}
NetUtils.connect(sock, NetUtils.createSocketAddr(dnAddr), timeout);
sock.setSoTimeout(timeout);
OutputStream unbufOut = NetUtils.getOutputStream(sock);

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
View File

@ -52,6 +52,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final String DFS_CLIENT_WRITE_REPLACE_DATANODE_ON_FAILURE_POLICY_DEFAULT = "DEFAULT";
public static final String DFS_CLIENT_SOCKET_CACHE_CAPACITY_KEY = "dfs.client.socketcache.capacity";
public static final int DFS_CLIENT_SOCKET_CACHE_CAPACITY_DEFAULT = 16;
public static final String DFS_CLIENT_USE_DN_HOSTNAME = "dfs.client.use.datanode.hostname";
public static final boolean DFS_CLIENT_USE_DN_HOSTNAME_DEFAULT = false;
// HA related configuration
public static final String DFS_CLIENT_FAILOVER_PROXY_PROVIDER_KEY_PREFIX = "dfs.client.failover.proxy.provider";
@ -81,6 +83,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final boolean DFS_DATANODE_SYNC_BEHIND_WRITES_DEFAULT = false;
public static final String DFS_DATANODE_DROP_CACHE_BEHIND_READS_KEY = "dfs.datanode.drop.cache.behind.reads";
public static final boolean DFS_DATANODE_DROP_CACHE_BEHIND_READS_DEFAULT = false;
public static final String DFS_DATANODE_USE_DN_HOSTNAME = "dfs.datanode.use.datanode.hostname";
public static final boolean DFS_DATANODE_USE_DN_HOSTNAME_DEFAULT = false;
public static final String DFS_NAMENODE_HTTP_PORT_KEY = "dfs.http.port";
public static final int DFS_NAMENODE_HTTP_PORT_DEFAULT = 50070;

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java
View File

@ -199,7 +199,8 @@ public class DFSInputStream extends FSInputStream implements ByteBufferReadable
try {
cdp = DFSUtil.createClientDatanodeProtocolProxy(
datanode, dfsClient.conf, dfsClient.getConf().socketTimeout, locatedblock);
datanode, dfsClient.conf, dfsClient.getConf().socketTimeout,
dfsClient.getConf().connectToDnViaHostname, locatedblock);
final long n = cdp.getReplicaVisibleLength(locatedblock.getBlock());
@ -716,8 +717,12 @@ public class DFSInputStream extends FSInputStream implements ByteBufferReadable
DatanodeInfo[] nodes = block.getLocations();
try {
DatanodeInfo chosenNode = bestNode(nodes, deadNodes);
InetSocketAddress targetAddr =
NetUtils.createSocketAddr(chosenNode.getXferAddr());
final String dnAddr =
chosenNode.getXferAddr(dfsClient.connectToDnViaHostname());
if (DFSClient.LOG.isDebugEnabled()) {
DFSClient.LOG.debug("Connecting to datanode " + dnAddr);
}
InetSocketAddress targetAddr = NetUtils.createSocketAddr(dnAddr);
return new DNAddrPair(chosenNode, targetAddr);
} catch (IOException ie) {
String blockInfo = block.getBlock() + " file=" + src;
@ -875,7 +880,8 @@ public class DFSInputStream extends FSInputStream implements ByteBufferReadable
if (dfsClient.shouldTryShortCircuitRead(dnAddr)) {
return DFSClient.getLocalBlockReader(dfsClient.conf, src, block,
blockToken, chosenNode, dfsClient.hdfsTimeout, startOffset);
blockToken, chosenNode, dfsClient.hdfsTimeout, startOffset,
dfsClient.connectToDnViaHostname());
}
IOException err = null;
@ -1183,7 +1189,7 @@ public class DFSInputStream extends FSInputStream implements ByteBufferReadable
throw new IOException("No live nodes contain current block");
}
/** Utility class to encapsulate data node info and its ip address. */
/** Utility class to encapsulate data node info and its address. */
static class DNAddrPair {
DatanodeInfo info;
InetSocketAddress addr;

13
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java
View File

@ -1100,7 +1100,7 @@ public class DFSOutputStream extends FSOutputSummer implements Syncable {
if (ie instanceof InvalidEncryptionKeyException && refetchEncryptionKey > 0) {
DFSClient.LOG.info("Will fetch a new encryption key and retry, "
+ "encryption key was invalid when connecting to "
+ nodes[0].getXferAddr() + " : " + ie);
+ nodes[0] + " : " + ie);
// The encryption key used is invalid.
refetchEncryptionKey--;
dfsClient.clearDataEncryptionKey();
@ -1112,7 +1112,8 @@ public class DFSOutputStream extends FSOutputSummer implements Syncable {
// find the datanode that matches
if (firstBadLink.length() != 0) {
for (int i = 0; i < nodes.length; i++) {
if (nodes[i].getXferAddr().equals(firstBadLink)) {
// NB: Unconditionally using the xfer addr w/o hostname
if (firstBadLink.equals(nodes[i].getXferAddr())) {
errorIndex = i;
break;
}
@ -1216,11 +1217,11 @@ public class DFSOutputStream extends FSOutputSummer implements Syncable {
*/
static Socket createSocketForPipeline(final DatanodeInfo first,
final int length, final DFSClient client) throws IOException {
if(DFSClient.LOG.isDebugEnabled()) {
DFSClient.LOG.debug("Connecting to datanode " + first);
final String dnAddr = first.getXferAddr(client.connectToDnViaHostname());
if (DFSClient.LOG.isDebugEnabled()) {
DFSClient.LOG.debug("Connecting to datanode " + dnAddr);
}
final InetSocketAddress isa =
NetUtils.createSocketAddr(first.getXferAddr());
final InetSocketAddress isa = NetUtils.createSocketAddr(dnAddr);
final Socket sock = client.socketFactory.createSocket();
final int timeout = client.getDatanodeReadTimeout(length);
NetUtils.connect(sock, isa, client.getRandomLocalInterfaceAddr(), timeout);

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
View File

@ -847,17 +847,17 @@ public class DFSUtil {
/** Create a {@link ClientDatanodeProtocol} proxy */
public static ClientDatanodeProtocol createClientDatanodeProtocolProxy(
DatanodeID datanodeid, Configuration conf, int socketTimeout,
LocatedBlock locatedBlock) throws IOException {
boolean connectToDnViaHostname, LocatedBlock locatedBlock) throws IOException {
return new ClientDatanodeProtocolTranslatorPB(datanodeid, conf, socketTimeout,
locatedBlock);
connectToDnViaHostname, locatedBlock);
}
/** Create {@link ClientDatanodeProtocol} proxy using kerberos ticket */
static ClientDatanodeProtocol createClientDatanodeProtocolProxy(
DatanodeID datanodeid, Configuration conf, int socketTimeout)
throws IOException {
DatanodeID datanodeid, Configuration conf, int socketTimeout,
boolean connectToDnViaHostname) throws IOException {
return new ClientDatanodeProtocolTranslatorPB(
datanodeid, conf, socketTimeout);
datanodeid, conf, socketTimeout, connectToDnViaHostname);
}
/** Create a {@link ClientDatanodeProtocol} proxy */

25
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/DatanodeID.java
View File

@ -104,7 +104,7 @@ public class DatanodeID implements Comparable<DatanodeID> {
/**
* @return IP:ipcPort string
*/
public String getIpcAddr() {
private String getIpcAddr() {
return ipAddr + ":" + ipcPort;
}
@ -122,6 +122,29 @@ public class DatanodeID implements Comparable<DatanodeID> {
return hostName + ":" + xferPort;
}
/**
* @return hostname:ipcPort
*/
private String getIpcAddrWithHostname() {
return hostName + ":" + ipcPort;
}
/**
* @param useHostname true to use the DN hostname, use the IP otherwise
* @return name:xferPort
*/
public String getXferAddr(boolean useHostname) {
return useHostname ? getXferAddrWithHostname() : getXferAddr();
}
/**
* @param useHostname true to use the DN hostname, use the IP otherwise
* @return name:ipcPort
*/
public String getIpcAddr(boolean useHostname) {
return useHostname ? getIpcAddrWithHostname() : getIpcAddr();
}
/**
* @return data storage ID.
*/

23
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientDatanodeProtocolTranslatorPB.java
View File

@ -73,10 +73,10 @@ public class ClientDatanodeProtocolTranslatorPB implements
RefreshNamenodesRequestProto.newBuilder().build();
public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid,
Configuration conf, int socketTimeout, LocatedBlock locatedBlock)
throws IOException {
Configuration conf, int socketTimeout, boolean connectToDnViaHostname,
LocatedBlock locatedBlock) throws IOException {
rpcProxy = createClientDatanodeProtocolProxy( datanodeid, conf,
socketTimeout, locatedBlock);
socketTimeout, connectToDnViaHostname, locatedBlock);
}
public ClientDatanodeProtocolTranslatorPB(InetSocketAddress addr,
@ -90,11 +90,17 @@ public class ClientDatanodeProtocolTranslatorPB implements
* @param datanodeid Datanode to connect to.
* @param conf Configuration.
* @param socketTimeout Socket timeout to use.
* @param connectToDnViaHostname connect to the Datanode using its hostname
* @throws IOException
*/
public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid,
Configuration conf, int socketTimeout) throws IOException {
InetSocketAddress addr = NetUtils.createSocketAddr(datanodeid.getIpcAddr());
Configuration conf, int socketTimeout, boolean connectToDnViaHostname)
throws IOException {
final String dnAddr = datanodeid.getIpcAddr(connectToDnViaHostname);
InetSocketAddress addr = NetUtils.createSocketAddr(dnAddr);
if (LOG.isDebugEnabled()) {
LOG.debug("Connecting to datanode " + dnAddr + " addr=" + addr);
}
rpcProxy = createClientDatanodeProtocolProxy(addr,
UserGroupInformation.getCurrentUser(), conf,
NetUtils.getDefaultSocketFactory(conf), socketTimeout);
@ -102,10 +108,11 @@ public class ClientDatanodeProtocolTranslatorPB implements
static ClientDatanodeProtocolPB createClientDatanodeProtocolProxy(
DatanodeID datanodeid, Configuration conf, int socketTimeout,
LocatedBlock locatedBlock) throws IOException {
InetSocketAddress addr = NetUtils.createSocketAddr(datanodeid.getIpcAddr());
boolean connectToDnViaHostname, LocatedBlock locatedBlock) throws IOException {
final String dnAddr = datanodeid.getIpcAddr(connectToDnViaHostname);
InetSocketAddress addr = NetUtils.createSocketAddr(dnAddr);
if (LOG.isDebugEnabled()) {
LOG.debug("ClientDatanodeProtocol addr=" + addr);
LOG.debug("Connecting to datanode " + dnAddr + " addr=" + addr);
}
// Since we're creating a new UserGroupInformation here, we know that no

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

@ -55,7 +55,7 @@ class DNConf {
final boolean dropCacheBehindReads;
final boolean syncOnClose;
final boolean encryptDataTransfer;
final boolean connectToDnViaHostname;
final long readaheadLength;
final long heartBeatInterval;
@ -97,7 +97,9 @@ class DNConf {
dropCacheBehindReads = conf.getBoolean(
DFSConfigKeys.DFS_DATANODE_DROP_CACHE_BEHIND_READS_KEY,
DFSConfigKeys.DFS_DATANODE_DROP_CACHE_BEHIND_READS_DEFAULT);
connectToDnViaHostname = conf.getBoolean(
DFSConfigKeys.DFS_DATANODE_USE_DN_HOSTNAME,
DFSConfigKeys.DFS_DATANODE_USE_DN_HOSTNAME_DEFAULT);
this.blockReportInterval = conf.getLong(DFS_BLOCKREPORT_INTERVAL_MSEC_KEY,
DFS_BLOCKREPORT_INTERVAL_MSEC_DEFAULT);

31
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
View File

@ -279,6 +279,7 @@ public class DataNode extends Configured
private Configuration conf;
private final String userWithLocalPathAccess;
private boolean connectToDnViaHostname;
ReadaheadPool readaheadPool;
/**
@ -299,8 +300,11 @@ public class DataNode extends Configured
final SecureResources resources) throws IOException {
super(conf);
this.userWithLocalPathAccess = conf
.get(DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY);
this.userWithLocalPathAccess =
conf.get(DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY);
this.connectToDnViaHostname = conf.getBoolean(
DFSConfigKeys.DFS_DATANODE_USE_DN_HOSTNAME,
DFSConfigKeys.DFS_DATANODE_USE_DN_HOSTNAME_DEFAULT);
try {
hostName = getHostName(conf);
LOG.info("Configured hostname is " + hostName);
@ -882,7 +886,7 @@ public class DataNode extends Configured
/**
* NB: The datanode can perform data transfer on the streaming
* address however clients are given the IPC IP address for data
* transfer, and that may be be a different address.
* transfer, and that may be a different address.
*
* @return socket address for data transfer
*/
@ -929,12 +933,12 @@ public class DataNode extends Configured
}
public static InterDatanodeProtocol createInterDataNodeProtocolProxy(
DatanodeID datanodeid, final Configuration conf, final int socketTimeout)
throws IOException {
final InetSocketAddress addr =
NetUtils.createSocketAddr(datanodeid.getIpcAddr());
if (InterDatanodeProtocol.LOG.isDebugEnabled()) {
InterDatanodeProtocol.LOG.debug("InterDatanodeProtocol addr=" + addr);
DatanodeID datanodeid, final Configuration conf, final int socketTimeout,
final boolean connectToDnViaHostname) throws IOException {
final String dnAddr = datanodeid.getIpcAddr(connectToDnViaHostname);
final InetSocketAddress addr = NetUtils.createSocketAddr(dnAddr);
if (LOG.isDebugEnabled()) {
LOG.debug("Connecting to datanode " + dnAddr + " addr=" + addr);
}
final UserGroupInformation loginUgi = UserGroupInformation.getLoginUser();
try {
@ -1390,8 +1394,11 @@ public class DataNode extends Configured
final boolean isClient = clientname.length() > 0;
try {
InetSocketAddress curTarget =
NetUtils.createSocketAddr(targets[0].getXferAddr());
final String dnAddr = targets[0].getXferAddr(connectToDnViaHostname);
InetSocketAddress curTarget = NetUtils.createSocketAddr(dnAddr);
if (LOG.isDebugEnabled()) {
LOG.debug("Connecting to datanode " + dnAddr);
}
sock = newSocket();
NetUtils.connect(sock, curTarget, dnConf.socketTimeout);
sock.setSoTimeout(targets.length * dnConf.socketTimeout);
@ -1847,7 +1854,7 @@ public class DataNode extends Configured
DatanodeRegistration bpReg = bpos.bpRegistration;
InterDatanodeProtocol datanode = bpReg.equals(id)?
this: DataNode.createInterDataNodeProtocolProxy(id, getConf(),
dnConf.socketTimeout);
dnConf.socketTimeout, dnConf.connectToDnViaHostname);
ReplicaRecoveryInfo info = callInitReplicaRecovery(datanode, rBlock);
if (info != null &&
info.getGenerationStamp() >= block.getGenerationStamp() &&

19
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiver.java
View File

@ -86,7 +86,7 @@ class DataXceiver extends Receiver implements Runnable {
private final DataNode datanode;
private final DNConf dnConf;
private final DataXceiverServer dataXceiverServer;
private final boolean connectToDnViaHostname;
private long opStartTime; //the start time of receiving an Op
private final SocketInputWrapper socketIn;
private OutputStream socketOut;
@ -113,6 +113,7 @@ class DataXceiver extends Receiver implements Runnable {
this.isLocal = s.getInetAddress().equals(s.getLocalAddress());
this.datanode = datanode;
this.dataXceiverServer = dataXceiverServer;
this.connectToDnViaHostname = datanode.getDnConf().connectToDnViaHostname;
remoteAddress = s.getRemoteSocketAddress().toString();
localAddress = s.getLocalSocketAddress().toString();
@ -404,7 +405,10 @@ class DataXceiver extends Receiver implements Runnable {
if (targets.length > 0) {
InetSocketAddress mirrorTarget = null;
// Connect to backup machine
mirrorNode = targets[0].getXferAddr();
mirrorNode = targets[0].getXferAddr(connectToDnViaHostname);
if (LOG.isDebugEnabled()) {
LOG.debug("Connecting to datanode " + mirrorNode);
}
mirrorTarget = NetUtils.createSocketAddr(mirrorNode);
mirrorSock = datanode.newSocket();
try {
@ -457,7 +461,8 @@ class DataXceiver extends Receiver implements Runnable {
if (isClient) {
BlockOpResponseProto.newBuilder()
.setStatus(ERROR)
.setFirstBadLink(mirrorNode)
// NB: Unconditionally using the xfer addr w/o hostname
.setFirstBadLink(targets[0].getXferAddr())
.build()
.writeDelimitedTo(replyOut);
replyOut.flush();
@ -729,8 +734,11 @@ class DataXceiver extends Receiver implements Runnable {
try {
// get the output stream to the proxy
InetSocketAddress proxyAddr =
NetUtils.createSocketAddr(proxySource.getXferAddr());
final String dnAddr = proxySource.getXferAddr(connectToDnViaHostname);
if (LOG.isDebugEnabled()) {
LOG.debug("Connecting to datanode " + dnAddr);
}
InetSocketAddress proxyAddr = NetUtils.createSocketAddr(dnAddr);
proxySock = datanode.newSocket();
NetUtils.connect(proxySock, proxyAddr, dnConf.socketTimeout);
proxySock.setSoTimeout(dnConf.socketTimeout);
@ -891,6 +899,7 @@ class DataXceiver extends Receiver implements Runnable {
if (mode == BlockTokenSecretManager.AccessMode.WRITE) {
DatanodeRegistration dnR =
datanode.getDNRegistrationForBP(blk.getBlockPoolId());
// NB: Unconditionally using the xfer addr w/o hostname
resp.setFirstBadLink(dnR.getXferAddr());
}
resp.build().writeDelimitedTo(out);

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FileChecksumServlets.java
View File

@ -127,7 +127,7 @@ public class FileChecksumServlets {
datanode, conf, getUGI(request, conf));
final ClientProtocol nnproxy = dfs.getNamenode();
final MD5MD5CRC32FileChecksum checksum = DFSClient.getFileChecksum(
path, nnproxy, socketFactory, socketTimeout, dfs.getDataEncryptionKey());
path, nnproxy, socketFactory, socketTimeout, dfs.getDataEncryptionKey(), false);
MD5MD5CRC32FileChecksum.write(xml, checksum);
} catch(IOException ioe) {
writeXml(ioe, path, xml);

18
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
View File

@ -53,7 +53,7 @@
<name>dfs.datanode.address</name>
<value>0.0.0.0:50010</value>
<description>
The address where the datanode server will listen to.
The datanode server address and port for data transfer.
If the port is 0 then the server will start on a free port.
</description>
</property>
@ -920,6 +920,22 @@
</description>
</property>
<property>
<name>dfs.client.use.datanode.hostname</name>
<value>false</value>
<description>Whether clients should use datanode hostnames when
connecting to datanodes.
</description>
</property>
<property>
<name>dfs.datanode.use.datanode.hostname</name>
<value>false</value>
<description>Whether datanodes should use datanode hostnames when
connecting to other datanodes for data transfer.
</description>
</property>
<property>
<name>dfs.client.local.interfaces</name>
<value></value>

43
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
View File

@ -144,6 +144,7 @@ public class MiniDFSCluster {
private boolean setupHostsFile = false;
private MiniDFSNNTopology nnTopology = null;
private boolean checkExitOnShutdown = true;
private boolean checkDataNodeHostConfig = false;
public Builder(Configuration conf) {
this.conf = conf;
@ -253,6 +254,14 @@ public class MiniDFSCluster {
return this;
}
/**
* Default: false
*/
public Builder checkDataNodeHostConfig(boolean val) {
this.checkDataNodeHostConfig = val;
return this;
}
/**
* Default: null
*/
@ -316,7 +325,8 @@ public class MiniDFSCluster {
builder.waitSafeMode,
builder.setupHostsFile,
builder.nnTopology,
builder.checkExitOnShutdown);
builder.checkExitOnShutdown,
builder.checkDataNodeHostConfig);
}
public class DataNodeProperties {
@ -550,7 +560,7 @@ public class MiniDFSCluster {
initMiniDFSCluster(conf, numDataNodes, format,
manageNameDfsDirs, true, manageDataDfsDirs, operation, racks, hosts,
simulatedCapacities, null, true, false,
MiniDFSNNTopology.simpleSingleNN(nameNodePort, 0), true);
MiniDFSNNTopology.simpleSingleNN(nameNodePort, 0), true, false);
}
private void initMiniDFSCluster(
@ -560,7 +570,8 @@ public class MiniDFSCluster {
StartupOption operation, String[] racks,
String[] hosts, long[] simulatedCapacities, String clusterId,
boolean waitSafeMode, boolean setupHostsFile,
MiniDFSNNTopology nnTopology, boolean checkExitOnShutdown)
MiniDFSNNTopology nnTopology, boolean checkExitOnShutdown,
boolean checkDataNodeHostConfig)
throws IOException {
ExitUtil.disableSystemExit();
@ -616,7 +627,7 @@ public class MiniDFSCluster {
// Start the DataNodes
startDataNodes(conf, numDataNodes, manageDataDfsDirs, operation, racks,
hosts, simulatedCapacities, setupHostsFile);
hosts, simulatedCapacities, setupHostsFile, false, checkDataNodeHostConfig);
waitClusterUp();
//make sure ProxyUsers uses the latest conf
ProxyUsers.refreshSuperUserGroupsConfiguration(conf);
@ -957,7 +968,21 @@ public class MiniDFSCluster {
long[] simulatedCapacities,
boolean setupHostsFile) throws IOException {
startDataNodes(conf, numDataNodes, manageDfsDirs, operation, racks, hosts,
simulatedCapacities, setupHostsFile, false);
simulatedCapacities, setupHostsFile, false, false);
}
/**
* @see MiniDFSCluster#startDataNodes(Configuration, int, boolean, StartupOption,
* String[], String[], long[], boolean, boolean, boolean)
*/
public synchronized void startDataNodes(Configuration conf, int numDataNodes,
boolean manageDfsDirs, StartupOption operation,
String[] racks, String[] hosts,
long[] simulatedCapacities,
boolean setupHostsFile,
boolean checkDataNodeAddrConfig) throws IOException {
startDataNodes(conf, numDataNodes, manageDfsDirs, operation, racks, hosts,
simulatedCapacities, setupHostsFile, checkDataNodeAddrConfig, false);
}
/**
@ -983,6 +1008,7 @@ public class MiniDFSCluster {
* @param simulatedCapacities array of capacities of the simulated data nodes
* @param setupHostsFile add new nodes to dfs hosts files
* @param checkDataNodeAddrConfig if true, only set DataNode port addresses if not already set in config
* @param checkDataNodeHostConfig if true, only set DataNode hostname key if not already set in config
*
* @throws IllegalStateException if NameNode has been shutdown
*/
@ -991,11 +1017,16 @@ public class MiniDFSCluster {
String[] racks, String[] hosts,
long[] simulatedCapacities,
boolean setupHostsFile,
boolean checkDataNodeAddrConfig) throws IOException {
boolean checkDataNodeAddrConfig,
boolean checkDataNodeHostConfig) throws IOException {
if (operation == StartupOption.RECOVER) {
return;
}
if (checkDataNodeHostConfig) {
conf.setIfUnset(DFS_DATANODE_HOST_NAME_KEY, "127.0.0.1");
} else {
conf.set(DFS_DATANODE_HOST_NAME_KEY, "127.0.0.1");
}
int curDatanodesNum = dataNodes.size();
// for mincluster's the default initialDelay for BRs is 0

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

@ -763,7 +763,7 @@ public class TestDFSClientRetries {
try {
proxy = DFSUtil.createClientDatanodeProtocolProxy(
fakeDnId, conf, 500, fakeBlock);
fakeDnId, conf, 500, false, fakeBlock);
proxy.getReplicaVisibleLength(new ExtendedBlock("bpid", 1));
fail ("Did not get expected exception: SocketTimeoutException");

1
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDistributedFileSystem.java
View File

@ -417,7 +417,6 @@ public class TestDistributedFileSystem {
final Configuration conf = getTestConfiguration();
conf.setBoolean(DFSConfigKeys.DFS_WEBHDFS_ENABLED_KEY, true);
conf.set(DFSConfigKeys.DFS_DATANODE_HOST_NAME_KEY, "localhost");
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
final FileSystem hdfs = cluster.getFileSystem();

29
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestFileCreation.java
View File

@ -171,7 +171,14 @@ public class TestFileCreation {
@Test
public void testFileCreation() throws IOException {
checkFileCreation(null);
checkFileCreation(null, false);
}
/** Same test but the client should use DN hostnames */
@Test
public void testFileCreationUsingHostname() throws IOException {
assumeTrue(System.getProperty("os.name").startsWith("Linux"));
checkFileCreation(null, true);
}
/** Same test but the client should bind to a local interface */
@ -180,10 +187,10 @@ public class TestFileCreation {
assumeTrue(System.getProperty("os.name").startsWith("Linux"));
// The mini cluster listens on the loopback so we can use it here
checkFileCreation("lo");
checkFileCreation("lo", false);
try {
checkFileCreation("bogus-interface");
checkFileCreation("bogus-interface", false);
fail("Able to specify a bogus interface");
} catch (UnknownHostException e) {
assertEquals("No such interface bogus-interface", e.getMessage());
@ -193,16 +200,28 @@ public class TestFileCreation {
/**
* Test if file creation and disk space consumption works right
* @param netIf the local interface, if any, clients should use to access DNs
* @param useDnHostname whether the client should contact DNs by hostname
*/
public void checkFileCreation(String netIf) throws IOException {
public void checkFileCreation(String netIf, boolean useDnHostname)
throws IOException {
Configuration conf = new HdfsConfiguration();
if (netIf != null) {
conf.set(DFSConfigKeys.DFS_CLIENT_LOCAL_INTERFACES, netIf);
}
conf.setBoolean(DFSConfigKeys.DFS_CLIENT_USE_DN_HOSTNAME, useDnHostname);
if (useDnHostname) {
// Since the mini cluster only listens on the loopback we have to
// ensure the hostname used to access DNs maps to the loopback. We
// do this by telling the DN to advertise localhost as its hostname
// instead of the default hostname.
conf.set(DFSConfigKeys.DFS_DATANODE_HOST_NAME_KEY, "localhost");
}
if (simulatedStorage) {
SimulatedFSDataset.setFactory(conf);
}
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build();
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.checkDataNodeHostConfig(true)
.build();
FileSystem fs = cluster.getFileSystem();
try {

1
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestHftpFileSystem.java
View File

@ -92,7 +92,6 @@ public class TestHftpFileSystem {
RAN.setSeed(seed);
config = new Configuration();
config.set(DFSConfigKeys.DFS_DATANODE_HOST_NAME_KEY, "localhost");
cluster = new MiniDFSCluster.Builder(config).numDataNodes(2).build();
hdfs = cluster.getFileSystem();
blockPoolId = cluster.getNamesystem().getBlockPoolId();

23
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestMiniDFSCluster.java
View File

@ -20,6 +20,7 @@ package org.apache.hadoop.hdfs;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assume.assumeTrue;
import java.io.File;
@ -41,6 +42,7 @@ public class TestMiniDFSCluster {
private static final String CLUSTER_2 = "cluster2";
private static final String CLUSTER_3 = "cluster3";
private static final String CLUSTER_4 = "cluster4";
private static final String CLUSTER_5 = "cluster5";
protected String testDataPath;
protected File testDataDir;
@Before
@ -125,4 +127,25 @@ public class TestMiniDFSCluster {
}
}
}
/** MiniDFSCluster should not clobber dfs.datanode.hostname if requested */
@Test(timeout=100000)
public void testClusterSetDatanodeHostname() throws Throwable {
assumeTrue(System.getProperty("os.name").startsWith("Linux"));
Configuration conf = new HdfsConfiguration();
conf.set(DFSConfigKeys.DFS_DATANODE_HOST_NAME_KEY, "MYHOST");
File testDataCluster5 = new File(testDataPath, CLUSTER_5);
String c5Path = testDataCluster5.getAbsolutePath();
conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, c5Path);
MiniDFSCluster cluster5 = new MiniDFSCluster.Builder(conf)
.numDataNodes(1)
.checkDataNodeHostConfig(true)
.build();
try {
Assert.assertEquals("DataNode hostname config not respected", "MYHOST",
cluster5.getDataNodes().get(0).getDatanodeId().getHostName());
} finally {
MiniDFSCluster.shutdownCluster(cluster5);
}
}
}

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

@ -246,7 +246,7 @@ public class TestShortCircuitLocalRead {
@Override
public ClientDatanodeProtocol run() throws Exception {
return DFSUtil.createClientDatanodeProtocolProxy(dnInfo, conf,
60000);
60000, false);
}
});
@ -264,7 +264,7 @@ public class TestShortCircuitLocalRead {
@Override
public ClientDatanodeProtocol run() throws Exception {
return DFSUtil.createClientDatanodeProtocolProxy(dnInfo, conf,
60000);
60000, false);
}
});
try {

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/security/token/block/TestBlockToken.java
View File

@ -304,7 +304,7 @@ public class TestBlockToken {
long endTime = Time.now() + 3000;
while (Time.now() < endTime) {
proxy = DFSUtil.createClientDatanodeProtocolProxy(fakeDnId, conf, 1000,
fakeBlock);
false, fakeBlock);
assertEquals(block3.getBlockId(), proxy.getReplicaVisibleLength(block3));
if (proxy != null) {
RPC.stopProxy(proxy);

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

@ -105,10 +105,13 @@ public class DataNodeTestUtils {
}
public static InterDatanodeProtocol createInterDatanodeProtocolProxy(
DataNode dn, DatanodeID datanodeid, final Configuration conf
) throws IOException {
DataNode dn, DatanodeID datanodeid, final Configuration conf,
boolean connectToDnViaHostname) throws IOException {
if (connectToDnViaHostname != dn.getDnConf().connectToDnViaHostname) {
throw new AssertionError("Unexpected DN hostname configuration");
}
return DataNode.createInterDataNodeProtocolProxy(datanodeid, conf,
dn.getDnConf().socketTimeout);
dn.getDnConf().socketTimeout, dn.getDnConf().connectToDnViaHostname);
}
public static void shutdownBlockScanner(DataNode dn) {

38
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestInterDatanodeProtocol.java
View File

@ -29,6 +29,7 @@ import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSClientAdapter;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.HdfsConfiguration;
@ -59,6 +60,8 @@ import org.apache.hadoop.net.NetUtils;
import org.junit.Assert;
import org.junit.Test;
import static org.junit.Assume.assumeTrue;
/**
* This tests InterDataNodeProtocol for block handling.
*/
@ -125,17 +128,42 @@ public class TestInterDatanodeProtocol {
return blocks.get(blocks.size() - 1);
}
/** Test block MD access via a DN */
@Test
public void testBlockMetaDataInfo() throws Exception {
checkBlockMetaDataInfo(false);
}
/** The same as above, but use hostnames for DN<->DN communication */
@Test
public void testBlockMetaDataInfoWithHostname() throws Exception {
assumeTrue(System.getProperty("os.name").startsWith("Linux"));
checkBlockMetaDataInfo(true);
}
/**
* The following test first creates a file.
* It verifies the block information from a datanode.
* Then, it updates the block with new information and verifies again.
* @param useDnHostname whether DNs should connect to other DNs by hostname
*/
@Test
public void testBlockMetaDataInfo() throws Exception {
private void checkBlockMetaDataInfo(boolean useDnHostname) throws Exception {
MiniDFSCluster cluster = null;
conf.setBoolean(DFSConfigKeys.DFS_DATANODE_USE_DN_HOSTNAME, useDnHostname);
if (useDnHostname) {
// Since the mini cluster only listens on the loopback we have to
// ensure the hostname used to access DNs maps to the loopback. We
// do this by telling the DN to advertise localhost as its hostname
// instead of the default hostname.
conf.set(DFSConfigKeys.DFS_DATANODE_HOST_NAME_KEY, "localhost");
}
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(3)
.checkDataNodeHostConfig(true)
.build();
cluster.waitActive();
//create a file
@ -154,7 +182,7 @@ public class TestInterDatanodeProtocol {
//connect to a data node
DataNode datanode = cluster.getDataNode(datanodeinfo[0].getIpcPort());
InterDatanodeProtocol idp = DataNodeTestUtils.createInterDatanodeProtocolProxy(
datanode, datanodeinfo[0], conf);
datanode, datanodeinfo[0], conf, useDnHostname);
//stop block scanner, so we could compare lastScanTime
DataNodeTestUtils.shutdownBlockScanner(datanode);
@ -364,7 +392,7 @@ public class TestInterDatanodeProtocol {
try {
proxy = DataNode.createInterDataNodeProtocolProxy(
dInfo, conf, 500);
dInfo, conf, 500, false);
proxy.initReplicaRecovery(new RecoveringBlock(
new ExtendedBlock("bpid", 1), null, 100));
fail ("Expected SocketTimeoutException exception, but did not get.");