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try thread pool #3359

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try thread pool #3359

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8 changes: 7 additions & 1 deletion src/snowflake/snowpark/dataframe_reader.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1186,6 +1186,7 @@ def dbapi(
session_init_statement: Optional[Union[str, List[str]]] = None,
udtf_configs: Optional[dict] = None,
fetch_merge_count: int = 1,
enable_multiprocessing: bool = False,
_emit_ast: bool = True,
) -> DataFrame:
"""
Expand Down Expand Up @@ -1259,6 +1260,7 @@ def dbapi(
before uploading it. This improves performance by reducing the number of
small Parquet files. Defaults to 1, meaning each `fetch_size` batch is written to its own
Parquet file and uploaded separately.
enable_multiprocessing: Whether to use multiprocessing for parallel fetching.

Example::
.. code-block:: python
Expand Down Expand Up @@ -1344,8 +1346,12 @@ def create_oracledb_connection():
statement_params=statements_params_for_telemetry, _emit_ast=False
)

fetch_executor = (
ProcessPoolExecutor if enable_multiprocessing else ThreadPoolExecutor
)

try:
with ProcessPoolExecutor(
with fetch_executor(
max_workers=max_workers
) as process_executor, ThreadPoolExecutor(
max_workers=max_workers
Expand Down
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