Package org.apache.helix.manager.zk

Examples of org.apache.helix.manager.zk.ZKHelixDataAccessor.keyBuilder()

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                                            String clusterName,
                                            String instanceName)
  {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    ZNRecord liveInstance =
        accessor.getProperty(keyBuilder.liveInstance(instanceName)).getRecord();

    return liveInstance.getSimpleField(LiveInstanceProperty.SESSION_ID.toString());
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  // clear status update for error partition so verify() will not fail on
  // old
  // errors
  ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName,
    new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
  Builder keyBuilder = accessor.keyBuilder();

  LiveInstance liveInstance = accessor.getProperty(keyBuilder
    .liveInstance(instance));
  accessor.removeProperty(keyBuilder.stateTransitionStatus(instance,
    liveInstance.getSessionId(), resource, partition));
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  {
    String instanceId = host + "_" + port;

    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    // ensure node is stopped
    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance(instanceId));
    if (liveInstance != null)
    {
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                           String oldInstanceName,
                           String newInstanceName)
  {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    InstanceConfig oldConfig =
        accessor.getProperty(keyBuilder.instanceConfig(oldInstanceName));
    if (oldConfig == null)
    {
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      _logger.warn(error);
      throw new HelixException(error);
    }
    // ensure old instance is down, otherwise fail
    List<String> liveInstanceNames =
        accessor.getChildNames(accessor.keyBuilder().liveInstances());

    if (liveInstanceNames.contains(oldInstanceName))
    {
      String error =
          "Old instance " + oldInstanceName
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    }

    dropInstanceFromCluster(clusterName, oldInstanceName);

    List<IdealState> existingIdealStates =
        accessor.getChildValues(accessor.keyBuilder().idealStates());
    for (IdealState idealState : existingIdealStates)
    {
      swapInstanceInIdealState(idealState, oldInstanceName, newInstanceName);
      accessor.setProperty(accessor.keyBuilder()
                                   .idealStates(idealState.getResourceName()), idealState);
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    List<IdealState> existingIdealStates =
        accessor.getChildValues(accessor.keyBuilder().idealStates());
    for (IdealState idealState : existingIdealStates)
    {
      swapInstanceInIdealState(idealState, oldInstanceName, newInstanceName);
      accessor.setProperty(accessor.keyBuilder()
                                   .idealStates(idealState.getResourceName()), idealState);
    }
  }

  void swapInstanceInIdealState(IdealState idealState,
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    try
    {
      ZKHelixDataAccessor accessor =
          new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(zkClient));
      Builder keyBuilder = accessor.keyBuilder();

      for (String instanceName : instanceNames)
      {
        List<String> sessionIds =
            accessor.getChildNames(keyBuilder.sessions(instanceName));
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    try
    {
      ZKHelixDataAccessor accessor =
          new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(zkClient));
      Builder keyBuilder = accessor.keyBuilder();

      for (String resGroupPartitionKey : stateMap.keySet())
      {
        Map<String, String> retMap = getResourceAndPartitionKey(resGroupPartitionKey);
        String resGroup = retMap.get("RESOURCE");
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    admin.addInstance(className, instanceConfig);

    // oversized data should not create any new data on zk
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(className, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    IdealState idealState = new IdealState("currentState");
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setIdealStateMode("AUTO");
    idealState.setNumPartitions(10);
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