Program: 33420
Project: 33420
Buggy source:
public RemoteFileSystemMounter(List<Map<String,String>> configData,String root,boolean unused) throws IOException {
  final RemoteFileSystem rootFS;
  RemoteFileSystem mappingFS=null;
  rootMountPoint=root;
  if (!rootMountPoint.endsWith(DELIMITER)) {
    rootMountPoint=rootMountPoint + DELIMITER;
  }
  rootFS=new NoOpRemoteFileSystem(null,null,this);
  addFileSystem("String_Node_Str",rootFS);
  mappingFS=new RemappingRemoteFileSystem(new HashMap<String,String>(),rootFS,this);
  for (  Map<String,String> fsConfig : configData) {
    final String type=fsConfig.get("String_Node_Str");
    if (type.equals("String_Node_Str")) {
      this.cachedFS=new CachedRemoteFileSystem(fsConfig,mappingFS,this);
      break;
    }
  }
  if (this.cachedFS == null) {
    throw new RuntimeException("String_Node_Str");
  }
  Collections.sort(configData,new Comparator<Map<String,String>>(){
    @Override public int compare(    Map<String,String> o1,    Map<String,String> o2){
      int p1;
      int p2;
      p1=Integer.parseInt(o1.get("String_Node_Str"));
      p2=Integer.parseInt(o2.get("String_Node_Str"));
      return p1 - p2;
    }
  }
);
  RemoteFileSystem previous=rootFS;
  for (  Map<String,String> fsConfig : configData) {
    final RemoteFileSystem fs;
    final String type;
    String relativeMP;
    type=fsConfig.get("String_Node_Str");
    if (type.trim().equals("String_Node_Str")) {
      fs=new NoOpRemoteFileSystem(fsConfig,previous,this);
    }
 else     if (type.trim().equals("String_Node_Str")) {
      fs=new S3RemoteFileSystem(fsConfig,previous,this);
    }
 else     if (type.trim().equals("String_Node_Str")) {
      continue;
    }
 else     if (type.trim().equals("String_Node_Str")) {
      fs=new HDFSRemoteFileSystem(fsConfig);
    }
 else     if (type.trim().equals("String_Node_Str")) {
      fs=new SqarAutomountingRemoteFileSystem(fsConfig,previous,this);
    }
 else {
      throw new RuntimeException("String_Node_Str" + type);
    }
    relativeMP=fsConfig.get("String_Node_Str").trim();
    if (relativeMP.equals("String_Node_Str")) {
      relativeMP="String_Node_Str";
    }
 else {
      relativeMP=relativeMP + DELIMITER;
      relativeMP=relativeMP.replace("String_Node_Str","String_Node_Str");
    }
    addFileSystem(relativeMP,fs);
    previous=fs;
  }
}

Fixed version (ground truth):
public RemoteFileSystemMounter(List<Map<String,Object>> configData,String root,boolean passthrough) throws IOException {
  final RemoteFileSystem rootFS;
  RemoteFileSystem mappingFS=null;
  rootMountPoint=root;
  if (!rootMountPoint.endsWith(DELIMITER)) {
    rootMountPoint=rootMountPoint + DELIMITER;
  }
  rootFS=new NoOpRemoteFileSystem(null,null,this);
  addFileSystem("String_Node_Str",rootFS);
  if (passthrough || configData == null) {
    this.topFS=rootFS;
    return;
  }
  mappingFS=new RemappingRemoteFileSystem(new HashMap<String,String>(),rootFS,this);
  for (  Map<String,Object> fsConfig : configData) {
    final String type=(String)fsConfig.get("String_Node_Str");
    if (type.equals("String_Node_Str")) {
      this.topFS=new CachedRemoteFileSystem(fsConfig,mappingFS,this);
      break;
    }
  }
  if (this.topFS == null) {
    throw new RuntimeException("String_Node_Str");
  }
  Collections.sort(configData,new Comparator<Map<String,Object>>(){
    @Override public int compare(    Map<String,Object> o1,    Map<String,Object> o2){
      int p1;
      int p2;
      p1=(Integer)o1.get("String_Node_Str");
      p2=(Integer)o2.get("String_Node_Str");
      return p1 - p2;
    }
  }
);
  RemoteFileSystem previous=rootFS;
  for (  Map<String,Object> fsConfig : configData) {
    final RemoteFileSystem fs;
    final Object type;
    String relativeMP;
    type=fsConfig.get("String_Node_Str");
    if (type.equals("String_Node_Str")) {
      fs=new NoOpRemoteFileSystem(fsConfig,previous,this);
    }
 else     if (type.equals("String_Node_Str")) {
      fs=new S3RemoteFileSystem(fsConfig,previous,this);
    }
 else     if (type.equals("String_Node_Str")) {
      continue;
    }
 else     if (type.equals("String_Node_Str")) {
      fs=new HDFSRemoteFileSystem(fsConfig);
    }
 else     if (type.equals("String_Node_Str")) {
      fs=new SqarAutomountingRemoteFileSystem(fsConfig,previous,this);
    }
 else {
      throw new RuntimeException("String_Node_Str" + type);
    }
    relativeMP=(String)fsConfig.get("String_Node_Str");
    if (relativeMP.equals("String_Node_Str")) {
      relativeMP="String_Node_Str";
    }
 else {
      relativeMP=relativeMP + DELIMITER;
      relativeMP=relativeMP.replace("String_Node_Str","String_Node_Str");
    }
    addFileSystem(relativeMP,fs);
    previous=fs;
  }
}