Address the comment

Signed-off-by: JmPotato <ghzpotato@gmail.com>

pkg/domain/resourcegroup/runaway.go

@@ -499,11 +499,16 @@ func (r *RunawayChecker) BeforeExecutor() error {
 		// Take action if needed.
 		switch action {
 		case rmpb.RunawayAction_Kill:
+			// Return an error to interrupt the query.
 			return exeerrors.ErrResourceGroupQueryRunawayQuarantine
 		case rmpb.RunawayAction_CoolDown:
-			// This action should be done in BeforeCopRequest.
+			// This action will be handled in `BeforeCopRequest`.
+			return nil
+		case rmpb.RunawayAction_DryRun:
+			// Noop.
 			return nil
 		default:
+			// Continue to examine other convicts.
 		}
 	}
 	return nil

pkg/executor/infoschema_reader.go

@@ -3640,10 +3640,10 @@ func (e *memtableRetriever) setDataFromRunawayWatches(sctx sessionctx.Context) e
 			watch.ResourceGroupName,
 			watch.StartTime.UTC().Format(time.DateTime),
 			watch.EndTime.UTC().Format(time.DateTime),
-			rmpb.RunawayWatchType_name[int32(watch.Watch)],
+			watch.Watch.String(),
 			watch.WatchText,
 			watch.Source,
-			rmpb.RunawayAction_name[int32(action)],
+			action.String(),
 		)
 		if watch.EndTime.Equal(resourcegroup.NullTime) {
 			row[3].SetString("UNLIMITED", mysql.DefaultCollationName)