chore: import upstream snapshot with attribution

python/ray/data/_internal/logical/interfaces/physical_plan.py

@@ -0,0 +1,34 @@
+from typing import TYPE_CHECKING, Dict
+
+from .logical_operator import LogicalOperator
+from .plan import Plan
+
+if TYPE_CHECKING:
+    from ray.data._internal.execution.interfaces import PhysicalOperator
+    from ray.data.context import DataContext
+
+
+class PhysicalPlan(Plan):
+    """The plan with a DAG of physical operators."""
+
+    def __init__(
+        self,
+        dag: "PhysicalOperator",
+        op_map: Dict["PhysicalOperator", LogicalOperator],
+        context: "DataContext",
+    ):
+        super().__init__(context)
+        self._dag = dag
+        self._op_map = op_map
+
+    @property
+    def dag(self) -> "PhysicalOperator":
+        """Get the DAG of physical operators."""
+        return self._dag
+
+    @property
+    def op_map(self) -> Dict["PhysicalOperator", LogicalOperator]:
+        """
+        Get a mapping from physical operators to their corresponding logical operator.
+        """
+        return self._op_map