7acf93b59f
* fix: clarify input type * fix: handling of error message if data_files not available * fix: clarify attention handling * fix: add doc on missing pad token
274 lines
9.2 KiB
Python
274 lines
9.2 KiB
Python
"""
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dataset loading shared utils
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"""
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from pathlib import Path
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from typing import Optional, Union
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from datasets import Dataset, DatasetDict, load_dataset, load_from_disk
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from huggingface_hub import hf_hub_download, snapshot_download
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from huggingface_hub.errors import (
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HFValidationError,
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RepositoryNotFoundError,
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RevisionNotFoundError,
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)
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from axolotl.utils.dict import DictDefault
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def get_ds_type(config_dataset: DictDefault):
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"""
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Get the dataset type from the path if it's not specified
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"""
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ds_type = "json"
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if config_dataset.ds_type:
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ds_type = config_dataset.ds_type
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elif ".parquet" in config_dataset.path:
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ds_type = "parquet"
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elif ".arrow" in config_dataset.path:
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ds_type = "arrow"
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elif ".csv" in config_dataset.path:
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ds_type = "csv"
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elif ".txt" in config_dataset.path:
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ds_type = "text"
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return ds_type
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def datasets_w_name_generator(dataset_configs: list[DictDefault]):
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"""
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Yields dataset configs handling multiple names or preprocess_shards
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Args:
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dataset_configs: list of dataset configs (equivalent to cfg.datasets)
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"""
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for dataset in dataset_configs:
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if dataset.name and isinstance(dataset.name, list):
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# load_dataset doesn't properly handle multiple named configurations
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# at the same time for a given dataset
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for name in dataset.name:
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yield DictDefault({**dataset, "name": name})
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elif dataset.preprocess_shards and not dataset.shards:
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for shard in range(dataset.preprocess_shards):
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yield DictDefault(
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{
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**dataset,
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"shards": dataset.preprocess_shards,
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"shards_idx": shard,
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}
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)
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else:
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yield dataset
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def load_dataset_w_config(
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config_dataset: DictDefault, use_auth_token: bool, streaming=False
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) -> Union[Dataset, DatasetDict]:
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"""
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Load a dataset from a config
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Args:
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config_dataset: single dataset config
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use_auth_token: whether to use HF auth token
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streaming: whether to stream the dataset
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"""
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# pylint: disable=invalid-name
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ds: Optional[Union[Dataset, DatasetDict]] = None # pylint: disable=invalid-name
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ds_from_hub = False
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try:
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# this is just a basic check to see if the path is a
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# valid HF dataset that's loadable
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snapshot_download(
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repo_id=config_dataset.path,
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repo_type="dataset",
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token=use_auth_token,
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revision=config_dataset.revision,
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ignore_patterns=["*"],
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)
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ds_from_hub = True
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except (
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RepositoryNotFoundError,
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RevisionNotFoundError,
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FileNotFoundError,
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ConnectionError,
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HFValidationError,
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ValueError,
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):
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pass
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ds_from_cloud = False
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storage_options = {}
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remote_file_system = None
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if config_dataset.path.startswith("s3://"):
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try:
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import aiobotocore.session # type: ignore
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import s3fs # type: ignore
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except ImportError as exc:
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raise ImportError(
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"s3:// paths require aiobotocore and s3fs to be installed"
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) from exc
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# Takes credentials from ~/.aws/credentials for default profile
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s3_session = aiobotocore.session.AioSession(profile="default")
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storage_options = {"session": s3_session}
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remote_file_system = s3fs.S3FileSystem(**storage_options)
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elif config_dataset.path.startswith("gs://") or config_dataset.path.startswith(
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"gcs://"
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):
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try:
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import gcsfs # type: ignore
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except ImportError as exc:
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raise ImportError(
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"gs:// or gcs:// paths require gcsfs to be installed"
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) from exc
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# gcsfs will use default credentials from the environment else anon
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# https://gcsfs.readthedocs.io/en/latest/#credentials
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storage_options = {"token": None}
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remote_file_system = gcsfs.GCSFileSystem(**storage_options)
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# TODO: Figure out how to get auth creds passed
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# elif config_dataset.path.startswith("adl://") or config_dataset.path.startswith("abfs://"):
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# try:
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# import adlfs
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# except ImportError as exc:
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# raise ImportError(
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# "adl:// or abfs:// paths require adlfs to be installed"
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# ) from exc
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# # Gen 1
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# storage_options = {
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# "tenant_id": TENANT_ID,
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# "client_id": CLIENT_ID,
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# "client_secret": CLIENT_SECRET,
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# }
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# # Gen 2
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# storage_options = {
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# "account_name": ACCOUNT_NAME,
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# "account_key": ACCOUNT_KEY,
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# }
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# remote_file_system = adlfs.AzureBlobFileSystem(**storage_options)
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try:
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if remote_file_system and remote_file_system.exists(config_dataset.path):
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ds_from_cloud = True
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except (FileNotFoundError, ConnectionError):
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pass
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# gather extra args from the config
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load_ds_kwargs = {}
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if config_dataset.split:
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load_ds_kwargs["split"] = config_dataset.split
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else:
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load_ds_kwargs["split"] = None
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# prefer local dataset, even if hub exists
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local_path = Path(config_dataset.path)
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if local_path.exists():
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if local_path.is_dir():
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if config_dataset.data_files:
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ds_type = get_ds_type(config_dataset)
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ds = load_dataset( # pylint: disable=invalid-name
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ds_type,
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name=config_dataset.name,
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data_files=config_dataset.data_files,
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streaming=streaming,
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**load_ds_kwargs,
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)
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else:
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try:
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ds = load_from_disk(
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config_dataset.path
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) # pylint: disable=invalid-name
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except FileNotFoundError:
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ds = load_dataset(
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config_dataset.path,
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name=config_dataset.name,
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streaming=False,
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**load_ds_kwargs,
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)
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elif local_path.is_file():
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ds_type = get_ds_type(config_dataset)
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ds = load_dataset( # pylint: disable=invalid-name
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ds_type,
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name=config_dataset.name,
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data_files=config_dataset.path,
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streaming=False,
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**load_ds_kwargs,
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)
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else:
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raise ValueError(
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"unhandled dataset load: local path exists, but is neither a directory or a file"
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)
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elif ds_from_hub:
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ds = load_dataset(
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config_dataset.path,
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name=config_dataset.name,
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streaming=streaming,
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data_files=config_dataset.data_files,
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token=use_auth_token,
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revision=config_dataset.revision,
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trust_remote_code=config_dataset.trust_remote_code,
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**load_ds_kwargs,
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)
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elif ds_from_cloud and remote_file_system:
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if remote_file_system.isdir(config_dataset.path):
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ds = load_from_disk(
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config_dataset.path,
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storage_options=storage_options,
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)
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elif remote_file_system.isfile(config_dataset.path):
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ds_type = get_ds_type(config_dataset)
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ds = load_dataset(
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ds_type,
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name=config_dataset.name,
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data_files=config_dataset.path,
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streaming=streaming,
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storage_options=storage_options,
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trust_remote_code=config_dataset.trust_remote_code,
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**load_ds_kwargs,
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)
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elif config_dataset.path.startswith("https://"):
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ds_type = get_ds_type(config_dataset)
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ds = load_dataset(
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ds_type,
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name=config_dataset.name,
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data_files=config_dataset.path,
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streaming=streaming,
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storage_options=storage_options,
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trust_remote_code=config_dataset.trust_remote_code,
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**load_ds_kwargs,
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)
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elif config_dataset.data_files:
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fp: str | list[str] | None = None
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if isinstance(config_dataset.data_files, str):
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fp = hf_hub_download(
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repo_id=config_dataset.path,
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repo_type="dataset",
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filename=config_dataset.data_files,
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revision=config_dataset.revision,
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)
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elif isinstance(config_dataset.data_files, list):
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fp = []
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for file in config_dataset.data_files:
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fp.append(
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hf_hub_download(
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repo_id=config_dataset.path,
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repo_type="dataset",
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filename=file,
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revision=config_dataset.revision,
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)
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)
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else:
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raise ValueError("data_files must be either a string or list of strings")
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ds = load_dataset(
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"json",
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name=config_dataset.name,
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data_files=fp,
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streaming=streaming,
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**load_ds_kwargs,
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)
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if not ds:
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raise ValueError("unhandled dataset load")
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return ds
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