org.apache.hadoop.hdfs.server.datanode.DNConf java code examples

Common ways to obtain DNConf

private void myMethod () {
 DNConf d =DataNode dataNode;dataNode.getDnConf()
Configuration conf;new DNConf(conf)
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}

 this.dataDirs = dataDirectories;
this.dnConf = new DNConf(this);
checkSecureConfig(dnConf, getConf(), resources);
  dnConf.maxLockedMemory);
int volFailuresTolerated = dnConf.getVolFailuresTolerated();
int volsConfigured = dnConf.getVolsConfigured();
if (volFailuresTolerated < MAX_VOLUME_FAILURE_TOLERATED_LIMIT
  || volFailuresTolerated >= volsConfigured) {
saslClient = new SaslDataTransferClient(dnConf.getConf(),
  dnConf.saslPropsResolver, dnConf.trustedChannelResolver);
saslServer = new SaslDataTransferServer(dnConf, blockPoolTokenSecretManager);

private void checkNNVersion(NamespaceInfo nsInfo)
  throws IncorrectVersionException {
 // build and layout versions should match
 String nnVersion = nsInfo.getSoftwareVersion();
 String minimumNameNodeVersion = dnConf.getMinimumNameNodeVersion();
 if (VersionUtil.compareVersions(nnVersion, minimumNameNodeVersion) < 0) {
  IncorrectVersionException ive = new IncorrectVersionException(
    minimumNameNodeVersion, nnVersion, "NameNode", "DataNode");
  LOG.warn(ive.getMessage());
  throw ive;
 }
 String dnVersion = VersionInfo.getVersion();
 if (!nnVersion.equals(dnVersion)) {
  LOG.info("Reported NameNode version '" + nnVersion + "' does not match " +
    "DataNode version '" + dnVersion + "' but is within acceptable " +
    "limits. Note: This is normal during a rolling upgrade.");
 }
}

long bpReadyTimeout = dnConf.getBpReadyTimeout();
StopWatch sw = new StopWatch();
sw.start();

 OutputStream underlyingOut, InputStream underlyingIn) throws IOException {
if (peer.hasSecureChannel() ||
  dnConf.getTrustedChannelResolver().isTrusted(getPeerAddress(peer))) {
 return new IOStreamPair(underlyingIn, underlyingOut);
 dnConf.getEncryptionAlgorithm());
  dnConf.getEncryptionAlgorithm());

 InputStream underlyingIn, int xferPort, DatanodeID datanodeId)
 throws IOException {
if (dnConf.getEncryptDataTransfer()) {
 LOG.debug(
  "SASL server doing encrypted handshake for peer = {}, datanodeId = {}",
  + "peer = {}, datanodeId = {}", peer, datanodeId);
 return new IOStreamPair(underlyingIn, underlyingOut);
} else if (dnConf.getSaslPropsResolver() != null) {
 LOG.debug(
  "SASL server doing general handshake for peer = {}, datanodeId = {}",
  peer, datanodeId);
 return getSaslStreams(peer, underlyingOut, underlyingIn);
} else if (dnConf.getIgnoreSecurePortsForTesting()) {

if (dnConf.getIgnoreSecurePortsForTesting()) {
 return;
 SaslPropertiesResolver saslPropsResolver = dnConf.getSaslPropsResolver();
 if (saslPropsResolver != null &&
   DFSUtil.getHttpPolicy(conf) == HttpConfig.Policy.HTTPS_ONLY) {

/**
 * Receives SASL negotiation for general-purpose handshake.
 *
 * @param peer connection peer
 * @param underlyingOut connection output stream
 * @param underlyingIn connection input stream
 * @return new pair of streams, wrapped after SASL negotiation
 * @throws IOException for any error
 */
private IOStreamPair getSaslStreams(Peer peer, OutputStream underlyingOut,
  InputStream underlyingIn) throws IOException {
 if (peer.hasSecureChannel() ||
   dnConf.getTrustedChannelResolver().isTrusted(getPeerAddress(peer))) {
  return new IOStreamPair(underlyingIn, underlyingOut);
 }
 SaslPropertiesResolver saslPropsResolver = dnConf.getSaslPropsResolver();
 Map<String, String> saslProps = saslPropsResolver.getServerProperties(
  getPeerAddress(peer));
 CallbackHandler callbackHandler = new SaslServerCallbackHandler(
  new PasswordFunction() {
   @Override
   public char[] apply(String userName) throws IOException {
    return buildServerPassword(userName);
   }
 });
 return doSaslHandshake(peer, underlyingOut, underlyingIn, saslProps,
   callbackHandler);
}

if (magicNumber != SASL_TRANSFER_MAGIC_NUMBER) {
 throw new InvalidMagicNumberException(magicNumber, 
   dnConf.getEncryptDataTransfer());
 if (sasl.isNegotiatedQopPrivacy()) {
  Configuration conf = dnConf.getConf();
  cipherOption = negotiateCipherOption(conf, cipherOptions);
  if (LOG.isDebugEnabled()) {
   dnConf.getConf(), cipherOption, underlyingOut, underlyingIn, true) : 
    sasl.createStreamPair(out, in);
} catch (IOException ioe) {

/**
 * Creates a dummy DataNode for testing purpose.
 */
@VisibleForTesting
@InterfaceAudience.LimitedPrivate("HDFS")
DataNode(final Configuration conf) throws DiskErrorException {
 super(conf);
 this.tracer = createTracer(conf);
 this.tracerConfigurationManager =
   new TracerConfigurationManager(DATANODE_HTRACE_PREFIX, conf);
 this.fileIoProvider = new FileIoProvider(conf, this);
 this.fileDescriptorPassingDisabledReason = null;
 this.maxNumberOfBlocksToLog = 0;
 this.confVersion = null;
 this.usersWithLocalPathAccess = null;
 this.connectToDnViaHostname = false;
 this.blockScanner = new BlockScanner(this, this.getConf());
 this.pipelineSupportECN = false;
 this.socketFactory = NetUtils.getDefaultSocketFactory(conf);
 this.dnConf = new DNConf(this);
 initOOBTimeout();
 storageLocationChecker = null;
 volumeChecker = new DatasetVolumeChecker(conf, new Timer());
}

volFailuresTolerated = datanode.getDnConf().getVolFailuresTolerated();
  dataLocations, storage);
volsConfigured = datanode.getDnConf().getVolsConfigured();
int volsFailed = volumeFailureInfos.size();
  datanode.getDnConf().getMaxLockedMemory() > 0) {
 lazyWriter = new Daemon(new LazyWriter(conf));
 lazyWriter.start();

public FsDatasetCache(FsDatasetImpl dataset) {
 this.dataset = dataset;
 this.maxBytes = dataset.datanode.getDnConf().getMaxLockedMemory();
 ThreadFactory workerFactory = new ThreadFactoryBuilder()
   .setDaemon(true)

public DNConf(final Configurable dn) {
 this.dn = dn;
 socketTimeout = getConf().getInt(DFS_CLIENT_SOCKET_TIMEOUT_KEY,
   HdfsConstants.READ_TIMEOUT);
 socketWriteTimeout = getConf().getInt(DFS_DATANODE_SOCKET_WRITE_TIMEOUT_KEY,
   HdfsConstants.WRITE_TIMEOUT);
 socketKeepaliveTimeout = getConf().getInt(
   DFSConfigKeys.DFS_DATANODE_SOCKET_REUSE_KEEPALIVE_KEY,
   DFSConfigKeys.DFS_DATANODE_SOCKET_REUSE_KEEPALIVE_DEFAULT);
 this.transferSocketSendBufferSize = getConf().getInt(
   DFSConfigKeys.DFS_DATANODE_TRANSFER_SOCKET_SEND_BUFFER_SIZE_KEY,
   DFSConfigKeys.DFS_DATANODE_TRANSFER_SOCKET_SEND_BUFFER_SIZE_DEFAULT);
 this.transferSocketRecvBufferSize = getConf().getInt(
   DFSConfigKeys.DFS_DATANODE_TRANSFER_SOCKET_RECV_BUFFER_SIZE_KEY,
   DFSConfigKeys.DFS_DATANODE_TRANSFER_SOCKET_RECV_BUFFER_SIZE_DEFAULT);
 this.tcpNoDelay = getConf().getBoolean(
   DFSConfigKeys.DFS_DATA_TRANSFER_SERVER_TCPNODELAY,
   DFSConfigKeys.DFS_DATA_TRANSFER_SERVER_TCPNODELAY_DEFAULT);
 transferToAllowed = getConf().getBoolean(
   DFS_DATANODE_TRANSFERTO_ALLOWED_KEY,
   DFS_DATANODE_TRANSFERTO_ALLOWED_DEFAULT);
 readaheadLength = getConf().getLong(
   HdfsClientConfigKeys.DFS_DATANODE_READAHEAD_BYTES_KEY,
   HdfsClientConfigKeys.DFS_DATANODE_READAHEAD_BYTES_DEFAULT);
 maxDataLength = getConf().getInt(DFSConfigKeys.IPC_MAXIMUM_DATA_LENGTH,
   DFSConfigKeys.IPC_MAXIMUM_DATA_LENGTH_DEFAULT);
 dropCacheBehindWrites = getConf().getBoolean(
   DFSConfigKeys.DFS_DATANODE_DROP_CACHE_BEHIND_WRITES_KEY,

 InputStream underlyingIn, int xferPort, DatanodeID datanodeId)
 throws IOException {
if (dnConf.getEncryptDataTransfer()) {
 LOG.debug(
  "SASL server doing encrypted handshake for peer = {}, datanodeId = {}",
  + "peer = {}, datanodeId = {}", peer, datanodeId);
 return new IOStreamPair(underlyingIn, underlyingOut);
} else if (dnConf.getSaslPropsResolver() != null) {
 LOG.debug(
  "SASL server doing general handshake for peer = {}, datanodeId = {}",
  peer, datanodeId);
 return getSaslStreams(peer, underlyingOut, underlyingIn);
} else if (dnConf.getIgnoreSecurePortsForTesting()) {

/**
 * Receives SASL negotiation for general-purpose handshake.
 *
 * @param peer connection peer
 * @param underlyingOut connection output stream
 * @param underlyingIn connection input stream
 * @return new pair of streams, wrapped after SASL negotiation
 * @throws IOException for any error
 */
private IOStreamPair getSaslStreams(Peer peer, OutputStream underlyingOut,
  InputStream underlyingIn) throws IOException {
 if (peer.hasSecureChannel() ||
   dnConf.getTrustedChannelResolver().isTrusted(getPeerAddress(peer))) {
  return new IOStreamPair(underlyingIn, underlyingOut);
 }
 SaslPropertiesResolver saslPropsResolver = dnConf.getSaslPropsResolver();
 Map<String, String> saslProps = saslPropsResolver.getServerProperties(
  getPeerAddress(peer));
 CallbackHandler callbackHandler = new SaslServerCallbackHandler(
  new PasswordFunction() {
   @Override
   public char[] apply(String userName) throws IOException {
    return buildServerPassword(userName);
   }
 });
 return doSaslHandshake(underlyingOut, underlyingIn, saslProps,
   callbackHandler);
}

 OutputStream underlyingOut, InputStream underlyingIn) throws IOException {
if (peer.hasSecureChannel() ||
  dnConf.getTrustedChannelResolver().isTrusted(getPeerAddress(peer))) {
 return new IOStreamPair(underlyingIn, underlyingOut);
 dnConf.getEncryptionAlgorithm());
  dnConf.getEncryptionAlgorithm());

 return;
SaslPropertiesResolver saslPropsResolver = dnConf.getSaslPropsResolver();
if (resources != null && saslPropsResolver == null) {
 return;
if (dnConf.getIgnoreSecurePortsForTesting()) {
 return;

if (magicNumber != SASL_TRANSFER_MAGIC_NUMBER) {
 throw new InvalidMagicNumberException(magicNumber, 
   dnConf.getEncryptDataTransfer());
 if (sasl.isNegotiatedQopPrivacy()) {
  cipherOption = negotiateCipherOption(dnConf.getConf(), cipherOptions);
  if (cipherOption != null) {
   if (LOG.isDebugEnabled()) {
   dnConf.getConf(), cipherOption, underlyingOut, underlyingIn, true) : 
    sasl.createStreamPair(out, in);
} catch (IOException ioe) {

@Before
public void setupMocks() throws Exception {
 mockNN1 = setupNNMock(0);
 mockNN2 = setupNNMock(1);
 // Set up a mock DN with the bare-bones configuration
 // objects, etc.
 mockDn = Mockito.mock(DataNode.class);
 Mockito.doReturn(true).when(mockDn).shouldRun();
 Configuration conf = new Configuration();
 File dnDataDir = new File(new File(TEST_BUILD_DATA, "dfs"), "data");
 conf.set(DFS_DATANODE_DATA_DIR_KEY, dnDataDir.toURI().toString());
 Mockito.doReturn(conf).when(mockDn).getConf();
 Mockito.doReturn(new DNConf(conf)).when(mockDn).getDnConf();
 Mockito.doReturn(DataNodeMetrics.create(conf, "fake dn"))
 .when(mockDn).getMetrics();
 // Set up a simulated dataset with our fake BP
 mockFSDataset = Mockito.spy(new SimulatedFSDataset(null, conf));
 mockFSDataset.addBlockPool(FAKE_BPID, conf);
 // Wire the dataset to the DN.
 Mockito.doReturn(mockFSDataset).when(mockDn).getFSDataset();
}

public FsDatasetCache(FsDatasetImpl dataset) {
 this.dataset = dataset;
 this.maxBytes = dataset.datanode.getDnConf().getMaxLockedMemory();
 ThreadFactory workerFactory = new ThreadFactoryBuilder()
   .setDaemon(true)

 InputStream underlyingIn, int xferPort, DatanodeID datanodeId)
 throws IOException {
if (dnConf.getEncryptDataTransfer()) {
 LOG.debug(
  "SASL server doing encrypted handshake for peer = {}, datanodeId = {}",
  + "peer = {}, datanodeId = {}", peer, datanodeId);
 return new IOStreamPair(underlyingIn, underlyingOut);
} else if (dnConf.getSaslPropsResolver() != null) {
 LOG.debug(
  "SASL server doing general handshake for peer = {}, datanodeId = {}",
  peer, datanodeId);
 return getSaslStreams(peer, underlyingOut, underlyingIn);
} else if (dnConf.getIgnoreSecurePortsForTesting()) {

Javadoc

Simple class encapsulating all of the configuration that the DataNode loads at startup time.

Most used methods

<init>
getMinimumNameNodeVersion
getBpReadyTimeout
getConf
Returns the configuration.
getEncryptDataTransfer
Returns true if encryption enabled for DataTransferProtocol.
getEncryptionAlgorithm
Returns encryption algorithm configured for DataTransferProtocol, or null if not configured.
getIgnoreSecurePortsForTesting
Returns true if configuration is set to skip checking for proper port configuration in a secured clu
getMaxLockedMemory
getSaslPropsResolver
Returns the SaslPropertiesResolver configured for use with DataTransferProtocol, or null if not conf
getTrustedChannelResolver
Returns the TrustedChannelResolver configured for use with DataTransferProtocol, or null if not conf
getXceiverStopTimeout
getTransferSocketRecvBufferSize

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How to useDNConf in org.apache.hadoop.hdfs.server.datanode

Best Java code snippets using org.apache.hadoop.hdfs.server.datanode.DNConf (Showing top 20 results out of 315)

How to use
DNConf
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org.apache.hadoop.hdfs.server.datanode