Java Code Examples for org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol#initReplicaRecovery()

The following examples show how to use org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol#initReplicaRecovery() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TestInterDatanodeProtocol.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
/** Test to verify that InterDatanode RPC timesout as expected when
 *  the server DN does not respond.
 */
@Test(expected=SocketTimeoutException.class)
public void testInterDNProtocolTimeout() throws Throwable {
  final Server server = new TestServer(1, true);
  server.start();

  final InetSocketAddress addr = NetUtils.getConnectAddress(server);
  DatanodeID fakeDnId = DFSTestUtil.getLocalDatanodeID(addr.getPort());
  DatanodeInfo dInfo = new DatanodeInfo(fakeDnId);
  InterDatanodeProtocol proxy = null;

  try {
    proxy = DataNode.createInterDataNodeProtocolProxy(
        dInfo, conf, 500, false);
    proxy.initReplicaRecovery(new RecoveringBlock(
        new ExtendedBlock("bpid", 1), null, 100));
    fail ("Expected SocketTimeoutException exception, but did not get.");
  } finally {
    if (proxy != null) {
      RPC.stopProxy(proxy);
    }
    server.stop();
  }
}
Example 2
Source File: TestInterDatanodeProtocol.java    From big-c with Apache License 2.0 6 votes vote down vote up 
/** Test to verify that InterDatanode RPC timesout as expected when
 *  the server DN does not respond.
 */
@Test(expected=SocketTimeoutException.class)
public void testInterDNProtocolTimeout() throws Throwable {
  final Server server = new TestServer(1, true);
  server.start();

  final InetSocketAddress addr = NetUtils.getConnectAddress(server);
  DatanodeID fakeDnId = DFSTestUtil.getLocalDatanodeID(addr.getPort());
  DatanodeInfo dInfo = new DatanodeInfo(fakeDnId);
  InterDatanodeProtocol proxy = null;

  try {
    proxy = DataNode.createInterDataNodeProtocolProxy(
        dInfo, conf, 500, false);
    proxy.initReplicaRecovery(new RecoveringBlock(
        new ExtendedBlock("bpid", 1), null, 100));
    fail ("Expected SocketTimeoutException exception, but did not get.");
  } finally {
    if (proxy != null) {
      RPC.stopProxy(proxy);
    }
    server.stop();
  }
}
Example 3
Source File: DataNode.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
/**
 * Convenience method, which unwraps RemoteException.
 * @throws IOException not a RemoteException.
 */
private static ReplicaRecoveryInfo callInitReplicaRecovery(
    InterDatanodeProtocol datanode,
    RecoveringBlock rBlock) throws IOException {
  try {
    return datanode.initReplicaRecovery(rBlock);
  } catch(RemoteException re) {
    throw re.unwrapRemoteException();
  }
}
Example 4
Source File: DataNode.java    From big-c with Apache License 2.0 5 votes vote down vote up 
/**
 * Convenience method, which unwraps RemoteException.
 * @throws IOException not a RemoteException.
 */
private static ReplicaRecoveryInfo callInitReplicaRecovery(
    InterDatanodeProtocol datanode,
    RecoveringBlock rBlock) throws IOException {
  try {
    return datanode.initReplicaRecovery(rBlock);
  } catch(RemoteException re) {
    throw re.unwrapRemoteException();
  }
}
Example 5
Source File: TestInterDatanodeProtocol.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
/**
 * 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
 */
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)
      .checkDataNodeHostConfig(true)
      .build();
    cluster.waitActive();

    //create a file
    DistributedFileSystem dfs = cluster.getFileSystem();
    String filestr = "/foo";
    Path filepath = new Path(filestr);
    DFSTestUtil.createFile(dfs, filepath, 1024L, (short)3, 0L);
    assertTrue(dfs.exists(filepath));

    //get block info
    LocatedBlock locatedblock = getLastLocatedBlock(
        DFSClientAdapter.getDFSClient(dfs).getNamenode(), filestr);
    DatanodeInfo[] datanodeinfo = locatedblock.getLocations();
    assertTrue(datanodeinfo.length > 0);

    //connect to a data node
    DataNode datanode = cluster.getDataNode(datanodeinfo[0].getIpcPort());
    InterDatanodeProtocol idp = DataNodeTestUtils.createInterDatanodeProtocolProxy(
        datanode, datanodeinfo[0], conf, useDnHostname);
    
    // Stop the block scanners.
    datanode.getBlockScanner().removeAllVolumeScanners();

    //verify BlockMetaDataInfo
    ExtendedBlock b = locatedblock.getBlock();
    InterDatanodeProtocol.LOG.info("b=" + b + ", " + b.getClass());
    checkMetaInfo(b, datanode);
    long recoveryId = b.getGenerationStamp() + 1;
    idp.initReplicaRecovery(
        new RecoveringBlock(b, locatedblock.getLocations(), recoveryId));

    //verify updateBlock
    ExtendedBlock newblock = new ExtendedBlock(b.getBlockPoolId(),
        b.getBlockId(), b.getNumBytes()/2, b.getGenerationStamp()+1);
    idp.updateReplicaUnderRecovery(b, recoveryId, b.getBlockId(),
        newblock.getNumBytes());
    checkMetaInfo(newblock, datanode);
    
    // Verify correct null response trying to init recovery for a missing block
    ExtendedBlock badBlock = new ExtendedBlock("fake-pool",
        b.getBlockId(), 0, 0);
    assertNull(idp.initReplicaRecovery(
        new RecoveringBlock(badBlock,
            locatedblock.getLocations(), recoveryId)));
  }
  finally {
    if (cluster != null) {cluster.shutdown();}
  }
}
Example 6
Source File: TestInterDatanodeProtocol.java    From big-c with Apache License 2.0 4 votes vote down vote up 
/**
 * 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
 */
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)
      .checkDataNodeHostConfig(true)
      .build();
    cluster.waitActive();

    //create a file
    DistributedFileSystem dfs = cluster.getFileSystem();
    String filestr = "/foo";
    Path filepath = new Path(filestr);
    DFSTestUtil.createFile(dfs, filepath, 1024L, (short)3, 0L);
    assertTrue(dfs.exists(filepath));

    //get block info
    LocatedBlock locatedblock = getLastLocatedBlock(
        DFSClientAdapter.getDFSClient(dfs).getNamenode(), filestr);
    DatanodeInfo[] datanodeinfo = locatedblock.getLocations();
    assertTrue(datanodeinfo.length > 0);

    //connect to a data node
    DataNode datanode = cluster.getDataNode(datanodeinfo[0].getIpcPort());
    InterDatanodeProtocol idp = DataNodeTestUtils.createInterDatanodeProtocolProxy(
        datanode, datanodeinfo[0], conf, useDnHostname);
    
    // Stop the block scanners.
    datanode.getBlockScanner().removeAllVolumeScanners();

    //verify BlockMetaDataInfo
    ExtendedBlock b = locatedblock.getBlock();
    InterDatanodeProtocol.LOG.info("b=" + b + ", " + b.getClass());
    checkMetaInfo(b, datanode);
    long recoveryId = b.getGenerationStamp() + 1;
    idp.initReplicaRecovery(
        new RecoveringBlock(b, locatedblock.getLocations(), recoveryId));

    //verify updateBlock
    ExtendedBlock newblock = new ExtendedBlock(b.getBlockPoolId(),
        b.getBlockId(), b.getNumBytes()/2, b.getGenerationStamp()+1);
    idp.updateReplicaUnderRecovery(b, recoveryId, b.getBlockId(),
        newblock.getNumBytes());
    checkMetaInfo(newblock, datanode);
    
    // Verify correct null response trying to init recovery for a missing block
    ExtendedBlock badBlock = new ExtendedBlock("fake-pool",
        b.getBlockId(), 0, 0);
    assertNull(idp.initReplicaRecovery(
        new RecoveringBlock(badBlock,
            locatedblock.getLocations(), recoveryId)));
  }
  finally {
    if (cluster != null) {cluster.shutdown();}
  }
}