docstr: Query the parquet files
  
  Note that this implementation will always read at least one row group, to get the list of columns and always
  have the same schema, even if the requested rows are invalid (out of range).
  
  Args:
      offset (int): The first row to read.
      length (int): The number of rows to read.
  
  Returns:
      pa.Table: The requested rows.
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code: def query(self, offset: int, length: int) -> pa.Table:
      """Query the parquet files
  
      Note that this implementation will always read at least one row group, to get the list of columns and always
      have the same schema, even if the requested rows are invalid (out of range).
  
      Args:
          offset (int): The first row to read.
          length (int): The number of rows to read.
  
      Returns:
          pa.Table: The requested rows.
      """
      logging.info(
          f"Query {type(self.parquet_index).__name__} for dataset={self.dataset}, config={self.config},"
          f" split={self.split}, offset={offset}, length={length}"
      )
      return self.parquet_index.query(offset=offset, length=length)
  
imports: import asyncio
  import logging
  import os
  from dataclasses import dataclass, field
  from functools import lru_cache
  from typing import Literal, Optional, TypedDict, Union
  import numpy
  import pyarrow
  import pyarrow.parquet
  from datasets import Features
  from datasets.features.features import FeatureType
  from datasets.utils.py_utils import size_str
  from fsspec.implementations.http import HTTPFile, HTTPFileSystem
  from huggingface_hub import HfFileSystem
  from pyarrow.lib import ArrowInvalid
  from libcommon.constants import CONFIG_PARQUET_METADATA_KINDS
  from libcommon.prometheus import StepProfiler
  from libcommon.simple_cache import get_previous_step_or_raise
  from libcommon.storage import StrPath
  from libcommon.viewer_utils.features import get_supported_unsupported_columns
label_desc: Use image node_id 3 for calling the RowsIndex obj's underlying member method code with example usage: obj.query(offset, length) and returns: self