fix: add retry logic when data delete meet an overtime err

op-node/rollup/derive/engine_controller.go

@@ -35,6 +35,8 @@ const (
 )
 
 var errNoFCUNeeded = errors.New("no FCU call was needed")
+var maxFCURetryAttempts = 5
+var fcuRetryDelay = 5 * time.Second
 
 var _ EngineControl = (*EngineController)(nil)
 var _ LocalEngineControl = (*EngineController)(nil)
@@ -399,14 +401,26 @@ func (e *EngineController) InsertUnsafePayload(ctx context.Context, envelope *et
 			FinalizedBlockHash: e.finalizedHead.Hash,
 		}
 
-		fcuRes, err := e.engine.ForkchoiceUpdate(ctx, &fcuReq, nil)
-		if fcuRes.PayloadStatus.Status == eth.ExecutionValid {
-			log.Info("engine processed data successfully")
-			e.needFCUCall = false
-			return nil
-		} else {
-			return NewTemporaryError(fmt.Errorf("engine failed to process inconsistent data: %w", err))
+		for attempts := 0; attempts < maxFCURetryAttempts; attempts++ {
+			fcuRes, err := e.engine.ForkchoiceUpdate(ctx, &fcuReq, nil)
+			if err != nil {
+				if strings.Contains(err.Error(), "context deadline exceeded") {
+					log.Warn("Failed to share forkchoice-updated signal, attempt %d: %v", attempts+1, err)
+					time.Sleep(fcuRetryDelay)
+					continue
+				}
+				return NewTemporaryError(fmt.Errorf("engine failed to process due to error: %w", err))
+			}
+
+			if fcuRes.PayloadStatus.Status == eth.ExecutionValid {
+				log.Info("engine processed data successfully")
+				e.needFCUCall = false
+				return nil
+			} else {
+				return NewTemporaryError(fmt.Errorf("engine failed to process inconsistent data"))
+			}
 		}
+
 	}
 
 	if !e.checkNewPayloadStatus(status.Status) {