コード例 #1
0
  /**
   * Test for {@link DFSUtil#getNNServiceRpcAddresses(Configuration)} {@link
   * DFSUtil#getNameServiceIdFromAddress(Configuration, InetSocketAddress, String...)
   * (Configuration)}
   */
  @Test
  public void testMultipleNamenodes() throws IOException {
    HdfsConfiguration conf = new HdfsConfiguration();
    conf.set(DFS_NAMESERVICES, "nn1,nn2");
    // Test - configured list of namenodes are returned
    final String NN1_ADDRESS = "localhost:9000";
    final String NN2_ADDRESS = "localhost:9001";
    final String NN3_ADDRESS = "localhost:9002";
    conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY, "nn1"), NN1_ADDRESS);
    conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY, "nn2"), NN2_ADDRESS);

    Map<String, Map<String, InetSocketAddress>> nnMap = DFSUtil.getNNServiceRpcAddresses(conf);
    assertEquals(2, nnMap.size());

    Map<String, InetSocketAddress> nn1Map = nnMap.get("nn1");
    assertEquals(1, nn1Map.size());
    InetSocketAddress addr = nn1Map.get(null);
    assertEquals("localhost", addr.getHostName());
    assertEquals(9000, addr.getPort());

    Map<String, InetSocketAddress> nn2Map = nnMap.get("nn2");
    assertEquals(1, nn2Map.size());
    addr = nn2Map.get(null);
    assertEquals("localhost", addr.getHostName());
    assertEquals(9001, addr.getPort());

    // Test - can look up nameservice ID from service address
    checkNameServiceId(conf, NN1_ADDRESS, "nn1");
    checkNameServiceId(conf, NN2_ADDRESS, "nn2");
    checkNameServiceId(conf, NN3_ADDRESS, null);

    // HA is not enabled in a purely federated config
    assertFalse(HAUtil.isHAEnabled(conf, "nn1"));
    assertFalse(HAUtil.isHAEnabled(conf, "nn2"));
  }
コード例 #2
0
  @Test
  public void testHANameNodesWithFederation() throws URISyntaxException {
    HdfsConfiguration conf = new HdfsConfiguration();

    final String NS1_NN1_HOST = "ns1-nn1.example.com:8020";
    final String NS1_NN2_HOST = "ns1-nn2.example.com:8020";
    final String NS2_NN1_HOST = "ns2-nn1.example.com:8020";
    final String NS2_NN2_HOST = "ns2-nn2.example.com:8020";
    conf.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY, "hdfs://ns1");

    // Two nameservices, each with two NNs.
    conf.set(DFS_NAMESERVICES, "ns1,ns2");
    conf.set(DFSUtil.addKeySuffixes(DFS_HA_NAMENODES_KEY_PREFIX, "ns1"), "ns1-nn1,ns1-nn2");
    conf.set(DFSUtil.addKeySuffixes(DFS_HA_NAMENODES_KEY_PREFIX, "ns2"), "ns2-nn1,ns2-nn2");
    conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY, "ns1", "ns1-nn1"), NS1_NN1_HOST);
    conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY, "ns1", "ns1-nn2"), NS1_NN2_HOST);
    conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY, "ns2", "ns2-nn1"), NS2_NN1_HOST);
    conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY, "ns2", "ns2-nn2"), NS2_NN2_HOST);

    Map<String, Map<String, InetSocketAddress>> map = DFSUtil.getHaNnRpcAddresses(conf);

    assertTrue(HAUtil.isHAEnabled(conf, "ns1"));
    assertTrue(HAUtil.isHAEnabled(conf, "ns2"));
    assertFalse(HAUtil.isHAEnabled(conf, "ns3"));

    assertEquals(NS1_NN1_HOST, map.get("ns1").get("ns1-nn1").toString());
    assertEquals(NS1_NN2_HOST, map.get("ns1").get("ns1-nn2").toString());
    assertEquals(NS2_NN1_HOST, map.get("ns2").get("ns2-nn1").toString());
    assertEquals(NS2_NN2_HOST, map.get("ns2").get("ns2-nn2").toString());

    assertEquals(NS1_NN1_HOST, DFSUtil.getNamenodeServiceAddr(conf, "ns1", "ns1-nn1"));
    assertEquals(NS1_NN2_HOST, DFSUtil.getNamenodeServiceAddr(conf, "ns1", "ns1-nn2"));
    assertEquals(NS2_NN1_HOST, DFSUtil.getNamenodeServiceAddr(conf, "ns2", "ns2-nn1"));

    // No nameservice was given and we can't determine which service addr
    // to use as two nameservices could share a namenode ID.
    assertEquals(null, DFSUtil.getNamenodeServiceAddr(conf, null, "ns1-nn1"));

    // Ditto for nameservice IDs, if multiple are defined
    assertEquals(null, DFSUtil.getNamenodeNameServiceId(conf));
    assertEquals(null, DFSUtil.getSecondaryNameServiceId(conf));

    Collection<URI> uris = DFSUtil.getNameServiceUris(conf, DFS_NAMENODE_RPC_ADDRESS_KEY);
    assertEquals(2, uris.size());
    assertTrue(uris.contains(new URI("hdfs://ns1")));
    assertTrue(uris.contains(new URI("hdfs://ns2")));
  }