8000 perf: Faster session startup by defering anon dataset fetch by TrevorBergeron · Pull Request #1982 · googleapis/python-bigquery-dataframes · GitHub
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perf: Faster session startup by defering anon dataset fetch #1982

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Merged
TrevorBergeron merged 3 commits into from
Aug 14, 2025
Merged

perf: Faster session startup by defering anon dataset fetch #1982

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perf: Faster session startup by defering anon dataset fetch
TrevorBergeron Aug 12, 2025
04f371b
Merge branch 'main' into lazy_anon_dataset
TrevorBergeron Aug 13, 2025
9b4d6d7
Merge branch 'main' into lazy_anon_dataset
TrevorBergeron Aug 14, 2025
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20 changes: 16 additions & 4 deletions bigframes/session/anonymous_dataset.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
# limitations under the License.

import datetime
import threading
from typing import List, Optional, Sequence
import uuid

Expand Down Expand Up @@ -40,19 +41,30 @@ def __init__(
):
self.bqclient = bqclient
self._location = location
self.dataset = bf_io_bigquery.create_bq_dataset_reference(
self.bqclient,
location=self._location,
)

self.session_id = session_id
self._table_ids: List[bigquery.TableReference] = []
self._kms_key = kms_key

self._dataset_lock = threading.Lock()
self._datset_ref: Optional[bigquery.DatasetReference] = None

@property
def location(self):
return self._location

@property
def dataset(self) -> bigquery.DatasetReference:
if self._datset_ref is not None:
return self._datset_ref
with self._dataset_lock:
if self._datset_ref is None:
self._datset_ref = bf_io_bigquery.create_bq_dataset_reference(
self.bqclient,
location=self._location,
)
return self._datset_ref

def _default_expiration(self):
"""When should the table expire automatically?"""
return (
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0