From 05d4ea5cea681a73c43e3e0107003bd79ca40c95 Mon Sep 17 00:00:00 2001
From: Brendan Dougherty <brendan.dougherty@shopify.com>
Date: Wed, 22 Nov 2023 02:55:41 +0000
Subject: [PATCH] vindexes: fix pooled collator buffer memory leak

Signed-off-by: Brendan Dougherty <brendan.dougherty@shopify.com>
---
 go/vt/vtgate/vindexes/unicode.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/go/vt/vtgate/vindexes/unicode.go b/go/vt/vtgate/vindexes/unicode.go
index bbf0be16c1d..6711f77c7d9 100644
--- a/go/vt/vtgate/vindexes/unicode.go
+++ b/go/vt/vtgate/vindexes/unicode.go
@@ -33,7 +33,10 @@ import (
 
 func unicodeHash(hashFunc func([]byte) []byte, key sqltypes.Value) ([]byte, error) {
 	collator := collatorPool.Get().(*pooledCollator)
-	defer collatorPool.Put(collator)
+	defer func() {
+		collator.buf.Reset()
+		collatorPool.Put(collator)
+	}()
 
 	keyBytes, err := key.ToBytes()
 	if err != nil {