add logs about experimental api

Author: vgvoleg

ydb/query/__init__.py

@@ -7,6 +7,8 @@
     "QueryClientSync",
 ]
 
+import logging
+
 from .base import (
     IQueryClient,
     SupportedDriverType,
@@ -24,9 +26,12 @@
 
 from .pool import QuerySessionPool
 
+logger = logging.getLogger(__name__)
+
 
 class QueryClientSync(IQueryClient):
     def __init__(self, driver: SupportedDriverType, query_client_settings: QueryClientSettings = None):
+        logger.warning("QueryClientSync is an experimental API, which could be changed.")
         self._driver = driver
         self._settings = query_client_settings
 

ydb/query/pool.py

@@ -1,3 +1,4 @@
+import logging
 from typing import Callable
 
 from . import base
@@ -9,6 +10,8 @@
     retry_operation_sync,
 )
 
+logger = logging.getLogger(__name__)
+
 
 class QuerySessionPool:
     """QuerySessionPool is an object to simplify operations with sessions of Query Service."""
@@ -18,6 +21,7 @@ def __init__(self, driver: base.SupportedDriverType):
         :param driver: A driver instance
         """
 
+        logger.warning("QuerySessionPool is an experimental API, which could be changed.")
         self._driver = driver
 
     def checkout(self):