Package org.apache.helix.manager.zk

Examples of org.apache.helix.manager.zk.ZKHelixAdmin

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    ClusterControllerManager controller =
        new ClusterControllerManager(ZK_ADDR, clusterName, "controller");
    controller.syncStart();

    // get an admin and accessor
    HelixAdmin helixAdmin = new ZKHelixAdmin(_gZkClient);
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();

    // do the test
    try {
      Thread.sleep(1000);
      // ensure that the external view coalesces
      boolean result =
          ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
              clusterName));
      Assert.assertTrue(result);
      ExternalView stableExternalView =
          accessor.getProperty(keyBuilder.externalView(RESOURCE_NAME));
      for (HelixManager participant : participants) {
        // disable the controller, bounce the node, re-enable the controller, verify assignments
        // remained the same
        helixAdmin.enableCluster(clusterName, false);
        participant.disconnect();
        Thread.sleep(1000);
        participant = createParticipant(clusterName, participant.getInstanceName());
        participant.connect();
        Thread.sleep(1000);
        helixAdmin.enableCluster(clusterName, true);
        Thread.sleep(1000);
        result =
            ClusterStateVerifier.verifyByZkCallback(new MatchingExternalViewVerifier(
                stableExternalView, clusterName));
        Assert.assertTrue(result);
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  public void testErrorPartition() throws Exception {
    String clusterName = getShortClassName();
    MockParticipantManager[] participants = new MockParticipantManager[5];

    System.out.println("START testErrorPartition() at " + new Date(System.currentTimeMillis()));
    ZKHelixAdmin tool = new ZKHelixAdmin(_gZkClient);

    TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, "localhost", "TestDB", 1, 10, 5, 3,
        "MasterSlave", true);

    ClusterControllerManager controller =
        new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
    controller.syncStart();

    for (int i = 0; i < 5; i++) {
      String instanceName = "localhost_" + (12918 + i);

      if (i == 0) {
        Map<String, Set<String>> errPartitions = new HashMap<String, Set<String>>() {
          {
            put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
          }
        };
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
        participants[i].setTransition(new ErrTransition(errPartitions));
      } else {
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
      }
      participants[i].syncStart();
    }

    Map<String, Map<String, String>> errStates = new HashMap<String, Map<String, String>>();
    errStates.put("TestDB0", new HashMap<String, String>());
    errStates.get("TestDB0").put("TestDB0_4", "localhost_12918");
    boolean result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            ZK_ADDR, clusterName, errStates));
    Assert.assertTrue(result);

    Map<String, Set<String>> errorStateMap = new HashMap<String, Set<String>>() {
      {
        put("TestDB0_4", TestHelper.setOf("localhost_12918"));
      }
    };

    // verify "TestDB0_0", "localhost_12918" is in ERROR state
    TestHelper.verifyState(clusterName, ZK_ADDR, errorStateMap, "ERROR");

    // disable a partition on a node with error state
    tool.enablePartition(false, clusterName, "localhost_12918", "TestDB0",
        Arrays.asList("TestDB0_4"));

    result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            ZK_ADDR, clusterName, errStates));
    Assert.assertTrue(result);

    TestHelper.verifyState(clusterName, ZK_ADDR, errorStateMap, "ERROR");

    // disable a node with error state
    tool.enableInstance(clusterName, "localhost_12918", false);

    result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            ZK_ADDR, clusterName, errStates));
    Assert.assertTrue(result);

    // make sure after restart stale ERROR state is gone
    tool.enablePartition(true, clusterName, "localhost_12918", "TestDB0",
        Arrays.asList("TestDB0_4"));
    tool.enableInstance(clusterName, "localhost_12918", true);

    participants[0].syncStop();
    result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            ZK_ADDR, clusterName));
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  HelixAdmin _admin;

  public ClusterSetup(String zkServerAddress) {
    _zkServerAddress = zkServerAddress;
    _zkClient = ZKClientPool.getZkClient(_zkServerAddress);
    _admin = new ZKHelixAdmin(_zkClient);
  }
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  }

  public ClusterSetup(ZkClient zkClient) {
    _zkServerAddress = zkClient.getServers();
    _zkClient = zkClient;
    _admin = new ZKHelixAdmin(_zkClient);
  }
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    IdealState is2 = helixAccessor.getProperty(helixAccessor.keyBuilder().idealStates("MyDB"));
    idealStateOld2.merge(is2.getRecord());

    String instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + 0);
    ZKHelixAdmin tool = new ZKHelixAdmin(_gZkClient);
    _setupTool.getClusterManagementTool().enableInstance(CLUSTER_NAME, instanceName, false);

    boolean result =
        ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
            ZK_ADDR, CLUSTER_NAME));
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    expectStateModelMap.put("TestDB0_2", "SLAVE");
    expectStateModelMap.put("TestDB0_3", "MASTER");
    checkStateModelMap(fty, expectStateModelMap);

    // drop resource
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.dropResource(clusterName, "TestDB0");

    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
            clusterName));
    Assert.assertTrue(result);
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    expectStateModelMap.put("TestDB0_2", "SLAVE");
    expectStateModelMap.put("TestDB0_3", "MASTER");
    checkStateModelMap(fty, expectStateModelMap);

    // drop resource
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.dropResource(clusterName, "TestDB0");

    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
            clusterName));
    Assert.assertTrue(result);
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        _zkConnectionTimeoutMs = config.getZkConnectionTimeoutMs();

        updateHelixManagerZkSessionTimeout(_zkSessionTimeoutMs);

        _zkClient = new ZkClient(_zkAddr, _zkSessionTimeoutMs, _zkConnectionTimeoutMs, new ZNRecordSerializer());
        _admin = new ZKHelixAdmin(_zkClient);
        _dataNotifiers = new HashSet<DatabusClusterDataNotifier>(5);

        //attempt to create a cluster
        int part = create(_admin, _zkClient, _clusterName, _numPartitions);
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        try
        {
             zkClient = new ZkClient(zkAddr,
                    ZkClient.DEFAULT_SESSION_TIMEOUT,
                    ZkClient.DEFAULT_CONNECTION_TIMEOUT, new ZNRecordSerializer());
            ZKHelixAdmin admin = new ZKHelixAdmin(zkClient);
            admin.addCluster(clusterName, false);
            created=true;
        }
        catch (HelixException e)
        {
            LOG.warn("Warn! Cluster might already exist! " + clusterName);
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    expectStateModelMap.put(PartitionId.from("TestDB0_2"), "SLAVE");
    expectStateModelMap.put(PartitionId.from("TestDB0_3"), "MASTER");
    checkStateModelMap(fty, expectStateModelMap);

    // drop resourcePartitionId
    HelixAdmin admin = new ZKHelixAdmin(_zkclient);
    admin.dropResource(clusterName, "TestDB0");

    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(_zkaddr,
            clusterName));
    Assert.assertTrue(result);
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