modify default page size to 20.

Author: zhanghaobo@kanzhun.com

python/src/lance_namespace_impls/hive2.py

@@ -327,11 +327,7 @@ def drop_namespace(self, request: DropNamespaceRequest) -> DropNamespaceResponse
             raise
 
     def list_tables(self, request: ListTablesRequest) -> ListTablesResponse:
-        """List tables in a database.
-
-        Pagination matches the Java Hive2Namespace implementation, ``limit`` defaults to 100 when unset
-        or non-positive.
-        """
+        """List tables in a database."""
         try:
             # Root namespace has no tables
             if self._is_root_namespace(request.id):

python/src/lance_namespace_impls/hive2_page_util.py

@@ -6,7 +6,7 @@
 
 from typing import List, Optional, Tuple
 
-DEFAULT_LIST_TABLES_PAGE_SIZE = 100
+DEFAULT_LIST_TABLES_PAGE_SIZE = 20
 
 
 def normalize_list_tables_page_size(limit: Optional[int]) -> int:

python/tests/test_hive2_page_util.py

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright The Lance Authors
-
 """
 Unit tests for Hive2 list-tables pagination (Java PageUtil parity).