1 files changed, 5 insertions, 18 deletions

diff --git a/src/mongo/db/repl/oplog_entry.h b/src/mongo/db/repl/oplog_entry.h
index 7552faa3f9e..40092e47f4e 100644
--- a/src/mongo/db/repl/oplog_entry.h
+++ b/src/mongo/db/repl/oplog_entry.h
@@ -87,13 +87,11 @@ public:
         o.parseProtected(ctxt, bsonObject);
         return o;
     }
-
-    const BSONObj& getPostImageDocumentKey() const {
-        return _postImageDocumentKey;
+    const BSONObj& getPreImageDocumentKey() const {
+        return _preImageDocumentKey;
     }
-
-    void setPostImageDocumentKey(BSONObj value) {
-        _postImageDocumentKey = std::move(value);
+    void setPreImageDocumentKey(BSONObj value) {
+        _preImageDocumentKey = std::move(value);
     }
 
     const BSONObj& getPreImage() const {
@@ -217,8 +215,7 @@ public:
     }
 
 private:
-    // Stores the post image _id + shard key values.
-    BSONObj _postImageDocumentKey;
+    BSONObj _preImageDocumentKey;
 
     // Used for storing the pre-image and post-image for the operation in-memory regardless of where
     // the images should be persisted.
@@ -371,10 +368,6 @@ public:
         getDurableReplOperation().setFromMigrate(value);
     }
 
-    void setCheckExistenceForDiffInsert() & {
-        getDurableReplOperation().setCheckExistenceForDiffInsert(true);
-    }
-
     /**
      * Same as setFromMigrate but only set when it is true.
      */
@@ -392,7 +385,6 @@ class DurableOplogEntry : private MutableOplogEntry {
 public:
     // Make field names accessible.
     using MutableOplogEntry::k_idFieldName;
-    using MutableOplogEntry::kCheckExistenceForDiffInsertFieldName;
     using MutableOplogEntry::kDestinedRecipientFieldName;
     using MutableOplogEntry::kDurableReplOperationFieldName;
     using MutableOplogEntry::kFromMigrateFieldName;
@@ -420,7 +412,6 @@ public:
 
     // Make serialize() and getters accessible.
     using MutableOplogEntry::get_id;
-    using MutableOplogEntry::getCheckExistenceForDiffInsert;
     using MutableOplogEntry::getDestinedRecipient;
     using MutableOplogEntry::getDurableReplOperation;
     using MutableOplogEntry::getFromMigrate;
@@ -487,7 +478,6 @@ public:
                       const NamespaceString& nss,
                       const boost::optional<UUID>& uuid,
                       const boost::optional<bool>& fromMigrate,
-                      const boost::optional<bool>& checkExistenceForDiffInsert,
                       int version,
                       const BSONObj& oField,
                       const boost::optional<BSONObj>& o2Field,
@@ -646,8 +636,6 @@ public:
     static constexpr auto kDurableReplOperationFieldName =
         DurableOplogEntry::kDurableReplOperationFieldName;
     static constexpr auto kFromMigrateFieldName = DurableOplogEntry::kFromMigrateFieldName;
-    static constexpr auto kCheckExistenceForDiffInsertFieldName =
-        DurableOplogEntry::kCheckExistenceForDiffInsertFieldName;
     static constexpr auto kFromTenantMigrationFieldName =
         DurableOplogEntry::kFromTenantMigrationFieldName;
     static constexpr auto kHashFieldName = DurableOplogEntry::kHashFieldName;
@@ -720,7 +708,6 @@ public:
     const boost::optional<std::int64_t> getHash() const&;
     std::int64_t getVersion() const;
     const boost::optional<bool> getFromMigrate() const&;
-    bool getCheckExistenceForDiffInsert() const&;
     const boost::optional<mongo::UUID>& getFromTenantMigration() const&;
     const boost::optional<mongo::repl::OpTime>& getPrevWriteOpTimeInTransaction() const&;
     const boost::optional<mongo::repl::OpTime>& getPostImageOpTime() const&;