使用雪花连接器获取数据会引发 EmptyPyArrowIterator 错误

我在 python 脚本（plotly dash 应用程序）中使用 python Snowflake 连接器，今天，在我不更改代码的情况下，该应用程序停止工作。我尝试了一些方法来找出可能出现的问题，我什至尝试运行示例代码雪花文档 https://docs.snowflake.net/manuals/user-guide/python-connector-example.html我得到了同样的错误：

code:

cur = conn.cursor()
try:
    cur.execute("SELECT col1, col2 FROM test_table ORDER BY col1")
    for (col1, col2) in cur:
        print('{0}, {1}'.format(col1, col2))
finally:
    cur.close()

error:

Traceback (most recent call last):
  File "db_connection.py", line 48, in <module>
    cur.execute("SELECT col1, col2 FROM test_table ORDER BY col1")
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/snowflake/connector/cursor.py", line 580, in execute
    self._init_result_and_meta(data, _use_ijson)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/snowflake/connector/cursor.py", line 630, in _init_result_and_meta
    self._result = ArrowResult(data, self, use_dict_result=self._use_dict_result)
  File "arrow_result.pyx", line 42, in snowflake.connector.arrow_result.ArrowResult.__init__
  File "arrow_result.pyx", line 156, in snowflake.connector.arrow_result.ArrowResult._reset
NameError: name 'EmptyPyArrowIterator' is not defined

连接已建立，我能够在数据库中创建表，但我似乎无法查询和迭代数据。

I am on macOS Catalina 10.15.1, snowflake-connector-python==2.1.0, Python 3.7.0.

你必须通过安装 pyarrow 模块

pip3 install pyarrow

安装雪花连接器不会自动安装。