Program: 111973
Project: 111973
Buggy source:
@Override public ColumnWriter getColumnWriter(final ColumnDescriptor path){
  return new ColumnWriter(){
    private void validate(    Object value,    int repetitionLevel,    int definitionLevel){
      String actual=Arrays.toString(path.getPath()) + "String_Node_Str" + value+ "String_Node_Str"+ repetitionLevel+ "String_Node_Str"+ definitionLevel;
      assertEquals("String_Node_Str" + counter,expected[counter],actual);
      ++counter;
    }
    @Override public void writeNull(    int repetitionLevel,    int definitionLevel){
      validate(null,repetitionLevel,definitionLevel);
    }
    @Override public void write(    Binary value,    int repetitionLevel,    int definitionLevel){
      validate(value.toStringUsingUTF8(),repetitionLevel,definitionLevel);
    }
    @Override public void write(    boolean value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    int value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    long value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    float value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    double value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public Statistics getColumnStatistics(){
      throw new UnsupportedOperationException();
    }
    @Override public void flush(){
      throw new UnsupportedOperationException();
    }
    @Override public long getBufferedSizeInMemory(){
      throw new UnsupportedOperationException();
    }
  }
;
}

Fixed version (ground truth):
@Override public ColumnWriter getColumnWriter(final ColumnDescriptor path){
  return new ColumnWriter(){
    private void validate(    Object value,    int repetitionLevel,    int definitionLevel){
      String actual=Arrays.toString(path.getPath()) + "String_Node_Str" + value+ "String_Node_Str"+ repetitionLevel+ "String_Node_Str"+ definitionLevel;
      assertEquals("String_Node_Str" + counter,expected[counter],actual);
      ++counter;
    }
    @Override public void writeNull(    int repetitionLevel,    int definitionLevel){
      validate(null,repetitionLevel,definitionLevel);
    }
    @Override public void write(    Binary value,    int repetitionLevel,    int definitionLevel){
      validate(value.toStringUsingUTF8(),repetitionLevel,definitionLevel);
    }
    @Override public void write(    boolean value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    int value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    long value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    float value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void write(    double value,    int repetitionLevel,    int definitionLevel){
      validate(value,repetitionLevel,definitionLevel);
    }
    @Override public void flush(){
      throw new UnsupportedOperationException();
    }
    @Override public long getBufferedSizeInMemory(){
      throw new UnsupportedOperationException();
    }
  }
;
}