Use std::mem for size_of and size_of_val (#262)

Looks like it depends on the Rust version so it fails in DQE

Author: joroKr21

datafusion-examples/examples/advanced_udaf.rs

@@ -18,6 +18,7 @@
 use arrow_schema::{Field, Schema};
 use datafusion::{arrow::datatypes::DataType, logical_expr::Volatility};
 use datafusion_physical_expr::NullState;
+use std::mem::{size_of, size_of_val};
 use std::{any::Any, sync::Arc};
 
 use arrow::{
@@ -92,7 +93,7 @@ impl AggregateUDFImpl for GeoMeanUdaf {
     }
 
     /// This is the description of the state. accumulator's state() must match the types here.
-    fn state_fields(&self, args: StateFieldsArgs) -> Result<Vec<arrow_schema::Field>> {
+    fn state_fields(&self, args: StateFieldsArgs) -> Result<Vec<Field>> {
         Ok(vec![
             Field::new("prod", args.return_type.clone(), true),
             Field::new("n", DataType::UInt32, true),
@@ -193,7 +194,7 @@ impl Accumulator for GeometricMean {
     }
 
     fn size(&self) -> usize {
-        std::mem::size_of_val(self)
+        size_of_val(self)
     }
 }
 

datafusion/physical-expr-common/src/aggregate/groups_accumulator/prim_op.rs

@@ -15,6 +15,7 @@
 // specific language governing permissions and limitations
 // under the License.
 
+use std::mem::size_of;
 use std::sync::Arc;
 
 use arrow::array::{ArrayRef, AsArray, BooleanArray, PrimitiveArray};

datafusion/physical-expr/src/aggregate/array_agg.rs

@@ -44,6 +44,7 @@ use datafusion_common::Result;
 use datafusion_common::{internal_err, ScalarValue};
 use datafusion_expr::{Accumulator, EmitTo, GroupsAccumulator};
 use std::any::Any;
+use std::mem::{size_of, size_of_val};
 use std::sync::Arc;
 
 /// ARRAY_AGG aggregate expression

datafusion/physical-expr/src/aggregate/array_agg_distinct.rs

@@ -20,6 +20,7 @@
 use std::any::Any;
 use std::collections::HashSet;
 use std::fmt::Debug;
+use std::mem::size_of_val;
 use std::sync::Arc;
 
 use arrow::array::ArrayRef;

datafusion/physical-expr/src/aggregate/average.rs

@@ -22,6 +22,7 @@ use log::debug;
 
 use std::any::Any;
 use std::fmt::Debug;
+use std::mem::{size_of, size_of_val};
 use std::sync::Arc;
 
 use crate::aggregate::groups_accumulator::accumulate::NullState;
@@ -284,7 +285,7 @@ impl Accumulator for AvgAccumulator {
     }
 
     fn size(&self) -> usize {
-        std::mem::size_of_val(self)
+        size_of_val(self)
     }
 }
 
@@ -377,7 +378,7 @@ impl<T: DecimalType + ArrowNumericType> Accumulator for DecimalAvgAccumulator<T>
     }
 
     fn size(&self) -> usize {
-        std::mem::size_of_val(self)
+        size_of_val(self)
     }
 }