From ccd044ecf761baf8a8cb6487b2ebe676e6611599 Mon Sep 17 00:00:00 2001
From: Shin Yee Tan <shinyee.tan@mongodb.com>
Date: Fri, 4 Feb 2022 19:23:23 +0000
Subject: Revert "SERVER-62209 Add 'comment' option to 'createIndex' command"

This reverts commit f395e9d34b413781bcfb67c2674378734223466c.
---
 src/mongo/db/index/index_descriptor.cpp | 6 ------
 src/mongo/db/index/index_descriptor.h   | 6 ------
 2 files changed, 12 deletions(-)

(limited to 'src/mongo/db/index')

diff --git a/src/mongo/db/index/index_descriptor.cpp b/src/mongo/db/index/index_descriptor.cpp
index 07ae8f1cdc5..69fac811cd6 100644
--- a/src/mongo/db/index/index_descriptor.cpp
+++ b/src/mongo/db/index/index_descriptor.cpp
@@ -106,7 +106,6 @@ constexpr StringData IndexDescriptor::kTextVersionFieldName;
 constexpr StringData IndexDescriptor::kUniqueFieldName;
 constexpr StringData IndexDescriptor::kHiddenFieldName;
 constexpr StringData IndexDescriptor::kWeightsFieldName;
-constexpr StringData IndexDescriptor::kCommentFieldName;
 
 IndexDescriptor::IndexDescriptor(const std::string& accessMethodName, BSONObj infoObj)
     : _accessMethodName(accessMethodName),
@@ -134,11 +133,6 @@ IndexDescriptor::IndexDescriptor(const std::string& accessMethodName, BSONObj in
         invariant(collationElement.isABSONObj());
         _collation = collationElement.Obj().getOwned();
     }
-
-    if (BSONElement commentElement = _infoObj[kCommentFieldName]) {
-        invariant(commentElement.isABSONObj());
-        _comment = commentElement.Obj().getOwned();
-    }
 }
 
 bool IndexDescriptor::isIndexVersionSupported(IndexVersion indexVersion) {
diff --git a/src/mongo/db/index/index_descriptor.h b/src/mongo/db/index/index_descriptor.h
index 5cc47c3564e..76e5dce4c91 100644
--- a/src/mongo/db/index/index_descriptor.h
+++ b/src/mongo/db/index/index_descriptor.h
@@ -88,7 +88,6 @@ public:
     static constexpr StringData kUniqueFieldName = "unique"_sd;
     static constexpr StringData kWeightsFieldName = "weights"_sd;
     static constexpr StringData kOriginalSpecFieldName = "originalSpec"_sd;
-    static constexpr StringData kCommentFieldName = "comment"_sd;
 
     /**
      * infoObj is a copy of the index-describing BSONObj contained in the catalog.
@@ -227,10 +226,6 @@ public:
         return _partialFilterExpression;
     }
 
-    const BSONObj& comment() const {
-        return _comment;
-    }
-
     /**
      * Returns true if the key pattern is for the _id index.
      * The _id index must have form exactly {_id : 1} or {_id : -1}.
@@ -280,7 +275,6 @@ private:
     IndexVersion _version;
     BSONObj _collation;
     BSONObj _partialFilterExpression;
-    BSONObj _comment;
 
     // Many query stages require going from an IndexDescriptor to its IndexCatalogEntry, so for
     // now we need this.
-- 
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