From 5f1aab4ebac953d5670fdd0de1c8d5cf9f0c5692 Mon Sep 17 00:00:00 2001
From: Andrew Lamb <andrew@nerdnetworks.org>
Date: Mon, 27 Jun 2022 16:45:17 -0700
Subject: [PATCH] Add ticket reference

---
 datafusion/core/src/physical_plan/join_utils.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/datafusion/core/src/physical_plan/join_utils.rs b/datafusion/core/src/physical_plan/join_utils.rs
index b690522e5c8..662cebcd5bb 100644
--- a/datafusion/core/src/physical_plan/join_utils.rs
+++ b/datafusion/core/src/physical_plan/join_utils.rs
@@ -170,6 +170,7 @@ fn output_join_field(old_field: &Field, join_type: &JoinType, is_left: bool) ->
     };
 
     if force_nullable {
+        // Could cleanup after https://github.com/apache/arrow-rs/issues/1934
         Field::new(old_field.name(), old_field.data_type().clone(), true)
     } else {
         old_field.clone()