diff --git a/arrow/src/array/array.rs b/arrow/src/array/array.rs
index d715bc49eb61..7a1796b52078 100644
--- a/arrow/src/array/array.rs
+++ b/arrow/src/array/array.rs
@@ -657,6 +657,28 @@ mod tests {
         }
     }
 
+    #[test]
+    fn test_null_map() {
+        let data_type = DataType::Map(
+            Box::new(Field::new(
+                "entry",
+                DataType::Struct(vec![
+                    Field::new("key", DataType::Utf8, false),
+                    Field::new("value", DataType::Int32, true),
+                ]),
+                false,
+            )),
+            false,
+        );
+        let array = new_null_array(&data_type, 9);
+        let a = array.as_any().downcast_ref::<MapArray>().unwrap();
+        assert_eq!(a.len(), 9);
+        assert_eq!(a.value_offsets()[9], 0i32);
+        for i in 0..9 {
+            assert!(a.is_null(i));
+        }
+    }
+
     #[test]
     fn test_null_dictionary() {
         let values = vec![None, None, None, None, None, None, None, None, None]
diff --git a/arrow/src/json/reader.rs b/arrow/src/json/reader.rs
index 0b220eb25ab6..2e716eb0565c 100644
--- a/arrow/src/json/reader.rs
+++ b/arrow/src/json/reader.rs
@@ -1224,6 +1224,14 @@ impl Decoder {
                             })
                             .collect::<StringArray>(),
                     ) as ArrayRef),
+                    DataType::Binary => Ok(Arc::new(
+                        rows.iter()
+                            .map(|row| {
+                                let maybe_value = row.get(field.name());
+                                maybe_value.and_then(|value| value.as_str())
+                            })
+                            .collect::<BinaryArray>(),
+                    ) as ArrayRef),
                     DataType::List(ref list_field) => {
                         match list_field.data_type() {
                             DataType::Dictionary(ref key_ty, _) => {
@@ -2963,6 +2971,38 @@ mod tests {
         assert_eq!(batch.num_rows(), 3);
     }
 
+    #[test]
+    fn test_json_read_binary_structs() {
+        let schema = Schema::new(vec![Field::new("c1", DataType::Binary, true)]);
+        let decoder = Decoder::new(Arc::new(schema), 1024, None);
+        let batch = decoder
+            .next_batch(
+                &mut vec![
+                    Ok(serde_json::json!({
+                        "c1": "₁₂₃",
+                    })),
+                    Ok(serde_json::json!({
+                        "c1": "foo",
+                    })),
+                ]
+                .into_iter(),
+            )
+            .unwrap()
+            .unwrap();
+        let data = batch.columns().iter().collect::<Vec<_>>();
+
+        let schema = Schema::new(vec![Field::new("c1", DataType::Binary, true)]);
+        let binary_values = BinaryArray::from(vec!["₁₂₃".as_bytes(), "foo".as_bytes()]);
+        let expected_batch =
+            RecordBatch::try_new(Arc::new(schema), vec![Arc::new(binary_values)])
+                .unwrap();
+        let expected_data = expected_batch.columns().iter().collect::<Vec<_>>();
+
+        assert_eq!(data, expected_data);
+        assert_eq!(batch.num_columns(), 1);
+        assert_eq!(batch.num_rows(), 2);
+    }
+
     #[test]
     fn test_json_iterator() {
         let builder = ReaderBuilder::new().infer_schema(None).with_batch_size(5);