[GitHub] [arrow] wjones127 commented on a diff in pull request #35568: GH-33986: [Python] Add a minimal protocol for datasets

["wjones127 (via GitHub)" <gi...@apache.org>]

wjones127 commented on code in PR #35568:
URL: https://github.com/apache/arrow/pull/35568#discussion_r1229963024


##########
docs/source/python/integration/dataset.rst:
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@@ -0,0 +1,134 @@
+.. Licensed to the Apache Software Foundation (ASF) under one
+.. or more contributor license agreements.  See the NOTICE file
+.. distributed with this work for additional information
+.. regarding copyright ownership.  The ASF licenses this file
+.. to you under the Apache License, Version 2.0 (the
+.. "License"); you may not use this file except in compliance
+.. with the License.  You may obtain a copy of the License at
+
+..   http://www.apache.org/licenses/LICENSE-2.0
+
+.. Unless required by applicable law or agreed to in writing,
+.. software distributed under the License is distributed on an
+.. "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+.. KIND, either express or implied.  See the License for the
+.. specific language governing permissions and limitations
+.. under the License.
+
+Extending PyArrow Datasets
+==========================
+
+PyArrow provides a core protocol for datasets, so third-party libraries can both
+produce and consume classes that conform to useful subset of the PyArrow dataset
+API. This subset provides enough functionality to provide predicate and filter
+pushdown. The subset of the API is contained in ``pyarrow.dataset.protocol``.
+

Review Comment:
   ```suggestion
   pushdown. The subset of the API is contained in ``pyarrow.dataset.protocol``.
   
   Producers are scanner implementations. For example, table formats like Delta
   Lake and Iceberg might provide their own dataset implementations. Consumers
   are typically query engines, such as DuckDB, DataFusion, Polars, and Dask.
   
   ```



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