SERVER-43025 rollback ignores startIndexBuild

Author: benety

src/mongo/db/repl/rollback_impl.cpp

@@ -432,8 +432,9 @@ StatusWith<std::set<NamespaceString>> RollbackImpl::_namespacesForOp(const Oplog
                 }
                 break;
             }
-            // TODO(SERVER-39451): Ignore no-op commitIndexBuild command for now. Revisit when we
-            // are ready to implement rollback logic.
+            // TODO(SERVER-39451): Ignore no-op startIndexBuild and commitIndexBuild commands.
+            // Revisit when we are ready to implement rollback logic.
+            case OplogEntry::CommandType::kStartIndexBuild:
             case OplogEntry::CommandType::kCommitIndexBuild:
             case OplogEntry::CommandType::kCommitTransaction:
             case OplogEntry::CommandType::kAbortTransaction: {

src/mongo/db/repl/rs_rollback.cpp

@@ -419,8 +419,11 @@ Status rollback_internal::updateFixUpInfoFromLocalOplogEntry(OperationContext* o
 
                 return Status::OK();
             }
-            // TODO(SERVER-39452): Ignore no-op commitIndexBuild command for now. Revisit when we
-            // are ready to implement rollback logic.
+            // TODO(SERVER-39452): Ignore no-op startIndexBuild and commitIndexBuild commands.
+            // Revisit when we are ready to implement rollback logic.
+            case OplogEntry::CommandType::kStartIndexBuild: {
+                return Status::OK();
+            }
             case OplogEntry::CommandType::kCommitIndexBuild: {
                 return Status::OK();
             }