From 0ec50ea1282440a56010f2a8642ed3933b932164 Mon Sep 17 00:00:00 2001
From: Andrew Duffy <andrew@a10y.dev>
Date: Fri, 13 Feb 2026 13:32:58 -0500
Subject: [PATCH] forgot to add optimize() first

Signed-off-by: Andrew Duffy <andrew@a10y.dev>
---
 vortex-array/src/expr/exprs/fill_null/mod.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vortex-array/src/expr/exprs/fill_null/mod.rs b/vortex-array/src/expr/exprs/fill_null/mod.rs
index 1000747ca95..71affa4c160 100644
--- a/vortex-array/src/expr/exprs/fill_null/mod.rs
+++ b/vortex-array/src/expr/exprs/fill_null/mod.rs
@@ -159,6 +159,8 @@ fn fill_null_canonical(
     if let Some(result) = precondition(canonical.as_ref(), fill_value)? {
         // The result of precondition may return another ScalarFn, in which case we should
         // apply it immediately.
+        // TODO(aduffy): Remove this once we have better driver check. We're also implicitly
+        //  relying on the fact that Cast execution will do an optimize on its result.
         return result.execute::<ArrayRef>(ctx);
     }
     match canonical {