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Support creating tables from cudf dataframes #220

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Merged
nils-braun merged 3 commits into from
Aug 20, 2021
Merged

Support creating tables from cudf dataframes #220

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9e74d23
Update PandasInputPlugin to accept cudf dataframes
ayushdg Aug 18, 2021
117ca55
Rename pandas input util module and relevant class to pandaslike
ayushdg Aug 19, 2021
afbbe57
Update pandaslike docstring
ayushdg Aug 19, 2021
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2 changes: 1 addition & 1 deletion dask_sql/context.py
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Original file line number Diff line number Diff line change
Expand Up @@ -111,7 +111,7 @@ def __init__(self):
RexConverter.add_plugin_class(core.RexLiteralPlugin, replace=False)

InputUtil.add_plugin_class(input_utils.DaskInputPlugin, replace=False)
InputUtil.add_plugin_class(input_utils.PandasInputPlugin, replace=False)
InputUtil.add_plugin_class(input_utils.PandasLikeInputPlugin, replace=False)
InputUtil.add_plugin_class(input_utils.HiveInputPlugin, replace=False)
InputUtil.add_plugin_class(input_utils.IntakeCatalogInputPlugin, replace=False)
InputUtil.add_plugin_class(input_utils.SqlalchemyHiveInputPlugin, replace=False)
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4 changes: 2 additions & 2 deletions dask_sql/input_utils/__init__.py
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Expand Up @@ -3,7 +3,7 @@
from .hive import HiveInputPlugin
from .intake import IntakeCatalogInputPlugin
from .location import LocationInputPlugin
from .pandas import PandasInputPlugin
from .pandaslike import PandasLikeInputPlugin
from .sqlalchemy import SqlalchemyHiveInputPlugin

__all__ = [
Expand All @@ -13,6 +13,6 @@
HiveInputPlugin,
IntakeCatalogInputPlugin,
LocationInputPlugin,
PandasInputPlugin,
PandasLikeInputPlugin,
SqlalchemyHiveInputPlugin,
]
6 changes: 5 additions & 1 deletion dask_sql/input_utils/convert.py
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Expand Up @@ -14,7 +14,11 @@
dd.DataFrame,
pd.DataFrame,
str,
Union["sqlalchemy.engine.base.Connection", "hive.Cursor"],
Union[
"sqlalchemy.engine.base.Connection",
"hive.Cursor",
"cudf.core.dataframe.DataFrame",
],
]


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12 changes: 9 additions & 3 deletions dask_sql/input_utils/pandas.py → dask_sql/input_utils/pandaslike.py
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@@ -1,16 +1,22 @@
import dask.dataframe as dd
import pandas as pd

try:
import cudf
except ImportError: # pragma: no cover
cudf = None

from dask_sql.input_utils.base import BaseInputPlugin


class PandasInputPlugin(BaseInputPlugin):
"""Input Plugin for Pandas DataFrames, which get converted to dask DataFrames"""
class PandasLikeInputPlugin(BaseInputPlugin):
"""Input Plugin for Pandas Like DataFrames, which get converted to dask DataFrames"""

def is_correct_input(
self, input_item, table_name: str, format: str = None, **kwargs
):
return isinstance(input_item, pd.DataFrame) or format == "dask"
is_cudf_type = cudf and isinstance(input_item, cudf.DataFrame)
return is_cudf_type or isinstance(input_item, pd.DataFrame) or format == "dask"

def to_dc(self, input_item, table_name: str, format: str = None, **kwargs):
npartitions = kwargs.pop("npartitions", 1)
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