Result too big for varchar.

backend_refactor/db/task.py

@@ -13,7 +13,7 @@ class Task(db.Model):
     create_time = db.Column(db.BigInteger)
     status = db.Column(db.Enum('QUEUEING', 'RUNNING', 'FINISHED', 'ERROR'))
     progress = db.Column(db.Integer)
-    result = db.Column(db.String(81920))
+    result = db.Column(db.String(16383))
 
     def __init__(self, uuid, type, create_time=time.time() * 1000, status='QUEUEING', progress=0, result='{}'):
         self.uuid = uuid