superset最近的更新颇为频繁，还增加了对es的支持，必须升级一把。
升级的方法也比较简单，现在测试环境试验，官方的文档有说明：
按照网上提供的 升级教程 升级。
cd ~ # 停止运行 killall -9 gunicorn # 激活虚拟环境 . ./superset/bin/activate pip install superset --upgrade superset db upgrade superset init
我升级完后会报错。
superset init
INFO:root:logging was configured successfully
/data/anaconda3/lib/python3.7/site-packages/flask_caching/__init__.py:188: UserWarning: Flask-Cache: CACHE_TYPE is set to null, caching is effectively disabled.
warnings.warn("Flask-Cache: CACHE_TYPE is set to null, "
Traceback (most recent call last):
File "/data/anaconda3/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1277, in _execute_context
cursor, statement, parameters, context
File "/data/anaconda3/lib/python3.7/site-packages/sqlalchemy/engine/default.py", line 608, in do_execute
