1 files changed, 1 insertions, 17 deletions
diff --git a/src/mongo/db/index/index_descriptor.cpp b/src/mongo/db/index/index_descriptor.cpp
index ca9ea36ece0..71fe92d0e47 100644
--- a/src/mongo/db/index/index_descriptor.cpp
+++ b/src/mongo/db/index/index_descriptor.cpp
@@ -101,7 +101,6 @@ bool IndexDescriptor::isIndexVersionSupported(IndexVersion indexVersion) {
         case IndexVersion::kV0:
         case IndexVersion::kV1:
         case IndexVersion::kV2:
-        case IndexVersion::kV2Unique:
             return true;
     }
     return false;
@@ -120,7 +119,6 @@ Status IndexDescriptor::isIndexVersionAllowedForCreation(
             break;
         case IndexVersion::kV1:
         case IndexVersion::kV2:
-        case IndexVersion::kV2Unique:
             return Status::OK();
     }
     return {ErrorCodes::CannotCreateIndex,
@@ -129,21 +127,7 @@ Status IndexDescriptor::isIndexVersionAllowedForCreation(
                           << static_cast<int>(indexVersion)};
 }
 
-IndexVersion IndexDescriptor::getDefaultIndexVersion(
-    ServerGlobalParams::FeatureCompatibility::Version featureCompatibilityVersion,
-    bool isUniqueIndex) {
-    // The gating variable would allow creation of V2 format unique index when set to true.
-    // Note: Here "isUniqueIndex" only considers whether or not "unique" field is specified
-    // and that its value evaluates to true. "_id" index for instance is unique, but the
-    // index spec for it doesn't carry a "unique" field. "isUniqueIndex" being false for
-    // "_id" indexes is on purpose, and in future if we were to make "_id" index specs
-    // include "unique:true", then we would need to change the logic here to preserve its
-    // behavior.
-    const bool useV2UniqueIndexFormat = false;
-    if (useV2UniqueIndexFormat && isUniqueIndex) {
-        return IndexVersion::kV2Unique;
-    }
-
+IndexVersion IndexDescriptor::getDefaultIndexVersion() {
     return IndexVersion::kV2;
 }