Pluggable Backend Interface with DataFusion for Bounded-Memory Compute

pyiceberg/execution/__init__.py

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+# 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.
+
+"""Pluggable execution backend for PyIceberg.
+
+Provides independently configurable read, write, and compute backends.
+The architecture separates Iceberg semantics (scan planning, commits) from
+data execution (read, write, sort, join, filter), allowing different engines
+to handle each axis while PyIceberg retains ownership of spec logic.
+"""
+
+from __future__ import annotations
+
+from pyiceberg.execution.engine import (
+    ExecutionEngine,
+    build_backends,
+    clear_config_cache,
+    resolve_backends,
+)
+from pyiceberg.execution.protocol import (
+    Backends,
+    ComputeBackend,
+    ReadBackend,
+    SortKey,
+    SortKeyList,
+    WriteBackend,
+)
+
+__all__ = [
+    "Backends",
+    "ComputeBackend",
+    "ExecutionEngine",
+    "ReadBackend",
+    "SortKey",
+    "SortKeyList",
+    "WriteBackend",
+    "build_backends",
+    "clear_config_cache",
+    "resolve_backends",
+]