From 901bff4be89eb966ed7eb222ba4f9064bc9bd02a Mon Sep 17 00:00:00 2001
From: "Jorge C. Leitao" <jorgecarleitao@gmail.com>
Date: Sun, 6 Dec 2020 07:52:32 +0100
Subject: [PATCH] Added equal to null array.

---
 rust/arrow/src/array/equal/mod.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/rust/arrow/src/array/equal/mod.rs b/rust/arrow/src/array/equal/mod.rs
index 84d486d94b6..3aa30f415cc 100644
--- a/rust/arrow/src/array/equal/mod.rs
+++ b/rust/arrow/src/array/equal/mod.rs
@@ -21,7 +21,7 @@
 
 use super::{
     Array, ArrayData, BinaryOffsetSizeTrait, DecimalArray, FixedSizeBinaryArray,
-    GenericBinaryArray, GenericListArray, GenericStringArray, OffsetSizeTrait,
+    GenericBinaryArray, GenericListArray, GenericStringArray, NullArray, OffsetSizeTrait,
     PrimitiveArray, StringOffsetSizeTrait, StructArray,
 };
 
@@ -68,6 +68,12 @@ impl<T: Array> PartialEq<T> for dyn Array {
     }
 }
 
+impl PartialEq for NullArray {
+    fn eq(&self, other: &NullArray) -> bool {
+        equal(self.data().as_ref(), other.data().as_ref())
+    }
+}
+
 impl<T: ArrowPrimitiveType> PartialEq for PrimitiveArray<T> {
     fn eq(&self, other: &PrimitiveArray<T>) -> bool {
         equal(self.data().as_ref(), other.data().as_ref())