From 598294aae09f36f8dede58d247e46c5cff75b0d8 Mon Sep 17 00:00:00 2001
From: Raphael Taylor-Davies <r.taylordavies@googlemail.com>
Date: Mon, 3 Oct 2022 14:16:09 +0100
Subject: [PATCH] Use fixed size slots in OrderPreservingInterner (#2677)

---
 arrow/src/row/interner.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arrow/src/row/interner.rs b/arrow/src/row/interner.rs
index 77edb97e8d1..b2651a20348 100644
--- a/arrow/src/row/interner.rs
+++ b/arrow/src/row/interner.rs
@@ -305,12 +305,17 @@ struct Slot {
 ///
 #[derive(Debug, Clone)]
 struct Bucket {
-    slots: Box<[Slot]>,
+    slots: Box<[Slot; 255]>,
 }
 
 impl Default for Bucket {
     fn default() -> Self {
-        let slots = (0..255).map(|_| Slot::default()).collect::<Vec<_>>().into();
+        let slots = (0..255)
+            .map(|_| Slot::default())
+            .collect::<Vec<_>>()
+            .into_boxed_slice()
+            .try_into()
+            .unwrap();
         Self { slots }
     }
 }