From c7f5e389e4488fcf7bd7a9a2ca4149080c409242 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20G=C3=B3mez=20Ferro?=
 <daniel.gomezferro@mongodb.com>
Date: Wed, 2 Feb 2022 07:59:01 +0000
Subject: SERVER-62811 Allow special index types on cluster keys

---
 src/mongo/db/catalog/clustered_collection_util.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/mongo/db')

diff --git a/src/mongo/db/catalog/clustered_collection_util.cpp b/src/mongo/db/catalog/clustered_collection_util.cpp
index 8380f1fb4d4..c79adca9054 100644
--- a/src/mongo/db/catalog/clustered_collection_util.cpp
+++ b/src/mongo/db/catalog/clustered_collection_util.cpp
@@ -136,6 +136,12 @@ bool matchesClusterKey(const BSONObj& keyPatternObj,
         // Clustered key cannot be compound.
         return false;
     }
+
+    if (!keyPatternObj.firstElement().isNumber()) {
+        // Clustered index can't be of any special type.
+        return false;
+    }
+
     return keyPatternObj.firstElement().fieldNameStringData() ==
         collInfo->getIndexSpec().getKey().firstElement().fieldNameStringData();
 }
-- 
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