chore: update CopyExec with maintains_input_order, supports_limit_pushdown and cardinality_effect (#1979)

Author: rluvaton

native/core/src/execution/operators/copy.rs

@@ -31,7 +31,7 @@ use arrow::array::{
 use arrow::datatypes::{DataType, Field, FieldRef, Schema, SchemaRef};
 use arrow::error::ArrowError;
 use datafusion::common::{arrow_datafusion_err, DataFusionError, Result as DataFusionResult};
-use datafusion::physical_plan::execution_plan::{Boundedness, EmissionType};
+use datafusion::physical_plan::execution_plan::{Boundedness, CardinalityEffect, EmissionType};
 use datafusion::physical_plan::metrics::{BaselineMetrics, ExecutionPlanMetricsSet, MetricsSet};
 use datafusion::{execution::TaskContext, physical_expr::*, physical_plan::*};
 
@@ -162,6 +162,18 @@ impl ExecutionPlan for CopyExec {
     fn metrics(&self) -> Option<MetricsSet> {
         Some(self.metrics.clone_inner())
     }
+
+    fn maintains_input_order(&self) -> Vec<bool> {
+        vec![true; self.children().len()]
+    }
+
+    fn supports_limit_pushdown(&self) -> bool {
+        true
+    }
+
+    fn cardinality_effect(&self) -> CardinalityEffect {
+        CardinalityEffect::Equal
+    }
 }
 
 struct CopyStream {