fix the retrain model to eager closes #78

logic/models/train/train.go

@@ -350,7 +350,7 @@ func generateCvsExpandExp(c *Context, run_path string, model_id string, offset i
 			return
 		}
 		if file_path == "id://" {
-			f.Write([]byte(id + "," + strconv.Itoa(-1) + "\n"))
+			f.Write([]byte(id + "," + strconv.Itoa(-2) + "\n"))
 		} else {
 			return count, errors.New("TODO generateCvs to file_path " + file_path)
 		}
@@ -529,7 +529,7 @@ func trainDefinitionExpandExp(c *Context, model *BaseModel, definition_id string
 	if err != nil {
 		return
 	}
-
+    
 	os.RemoveAll(run_path)
 	c.Logger.Info("Model finished training!", "accuracy", accuracy)
 	return