Program: 82569
Project: 82569
Buggy source:
public Agent(Properties props){
  String url=props.getProperty("String_Node_Str");
  SimpleDriverDataSource dataSource=null;
  try {
    dataSource=new SimpleDriverDataSource(DriverManager.getDriver(url),url,props.getProperty("String_Node_Str"),props.getProperty("String_Node_Str"));
  }
 catch (  SQLException e) {
    System.out.println("String_Node_Str" + e.getMessage());
    System.exit(1);
  }
  JdbcTemplate jdbc=new JdbcTemplate(dataSource);
  List<String> zooKeeperInstances=new ArrayList<String>(Arrays.asList(props.getProperty("String_Node_Str").split("String_Node_Str")));
  for (  String zkInstance : zooKeeperInstances) {
    String zkUrl=props.getProperty("String_Node_Str" + zkInstance + "String_Node_Str");
    new Thread(new ZookeeperInstance(zkInstance,zkUrl,jdbc)).start();
  }
  List<String> activeCollectors=new ArrayList<String>(Arrays.asList(props.getProperty("String_Node_Str").split("String_Node_Str")));
  Map<String,String> hdfsInstances=loadHdfsInstances(props);
  Map<String,String> blurInstances=loadBlurInstances(props);
  for (  Map.Entry<String,String> hdfsEntry : hdfsInstances.entrySet()) {
    HDFSCollector.initializeHdfs(hdfsEntry.getKey(),hdfsEntry.getValue(),jdbc);
  }
  while (true) {
    if (activeCollectors.contains("String_Node_Str")) {
      for (      String uri : hdfsInstances.values()) {
        try {
          HDFSCollector.startCollecting(uri,jdbc);
        }
 catch (        Exception e) {
          System.out.println("String_Node_Str" + e.getMessage());
        }
      }
    }
    if (activeCollectors.contains("String_Node_Str")) {
      for (      String uri : blurInstances.values()) {
        try {
          QueryCollector.startCollecting(uri,jdbc);
        }
 catch (        Exception e) {
          System.out.println("String_Node_Str" + e.getMessage());
        }
      }
    }
    if (activeCollectors.contains("String_Node_Str")) {
      for (      String uri : blurInstances.values()) {
        try {
          TableCollector.startCollecting(uri,jdbc);
        }
 catch (        Exception e) {
          System.out.println("String_Node_Str" + e.getMessage());
        }
      }
    }
    try {
      Thread.sleep(1500);
    }
 catch (    InterruptedException e) {
      break;
    }
  }
  System.out.println("String_Node_Str");
}

Fixed version (ground truth):
public Agent(Properties props){
  String url=props.getProperty("String_Node_Str");
  SimpleDriverDataSource dataSource=null;
  try {
    dataSource=new SimpleDriverDataSource(DriverManager.getDriver(url),url,props.getProperty("String_Node_Str"),props.getProperty("String_Node_Str"));
  }
 catch (  SQLException e) {
    System.out.println("String_Node_Str" + e.getMessage());
    System.exit(1);
  }
  JdbcTemplate jdbc=new JdbcTemplate(dataSource);
  List<String> zooKeeperInstances=new ArrayList<String>(Arrays.asList(props.getProperty("String_Node_Str").split("String_Node_Str")));
  for (  String zkInstance : zooKeeperInstances) {
    String zkUrl=props.getProperty("String_Node_Str" + zkInstance + "String_Node_Str");
    new Thread(new ZookeeperInstance(zkInstance,zkUrl,jdbc,props)).start();
  }
  List<String> activeCollectors=new ArrayList<String>(Arrays.asList(props.getProperty("String_Node_Str").split("String_Node_Str")));
  Map<String,Map<String,String>> hdfsInstances=loadHdfsInstances(props);
  Map<String,String> blurInstances=loadBlurInstances(props);
  for (  Map.Entry<String,Map<String,String>> hdfsEntry : hdfsInstances.entrySet()) {
    HDFSCollector.initializeHdfs(hdfsEntry.getKey(),hdfsEntry.getValue().get("String_Node_Str"),jdbc);
  }
  while (true) {
    if (activeCollectors.contains("String_Node_Str")) {
      for (      Map<String,String> instance : hdfsInstances.values()) {
        try {
        }
 catch (        Exception e) {
          System.out.println("String_Node_Str" + e.getMessage());
        }
      }
    }
    if (activeCollectors.contains("String_Node_Str")) {
      for (      String uri : blurInstances.values()) {
        try {
          QueryCollector.startCollecting(uri,jdbc);
        }
 catch (        Exception e) {
          System.out.println("String_Node_Str" + e.getMessage());
        }
      }
    }
    if (activeCollectors.contains("String_Node_Str")) {
      for (      String uri : blurInstances.values()) {
        try {
          TableCollector.startCollecting(uri,jdbc);
        }
 catch (        Exception e) {
          System.out.println("String_Node_Str" + e.getMessage());
        }
      }
    }
    try {
      Thread.sleep(1500);
    }
 catch (    InterruptedException e) {
      break;
    }
  }
  System.out.println("String_Node_Str");
}