Pyflink执行报错py4j.protocol.Py4JError

Question

我在学习使用Pyflink，按照官方教程的案例运行却报错了，有了解的能帮忙看下吗
教程 https://www.bookstack.cn/read/flink-1.15-zh/6fc705c52a6e6cea.md
代码

from pyflink.table import EnvironmentSettings, TableEnvironment
# 创建 批 TableEnvironment
env_settings = EnvironmentSettings.in_batch_mode()
table_env = TableEnvironment.create(env_settings)
table = table_env.from_elements([(1, 'Hi'), (2, 'Hello')])
table.execute().print()

报错

Traceback (most recent call last):
  File "/data/flink/python/word_count.py", line 5, in <module>
    table = table_env.from_elements([(1, 'Hi'), (2, 'Hello')])
  File "/usr/local/lib/python3.8/dist-packages/pyflink/table/table_environment.py", line 1428, in from_elements
    return self._from_elements(elements, schema)
  File "/usr/local/lib/python3.8/dist-packages/pyflink/table/table_environment.py", line 1447, in _from_elements
    j_table = PythonTableUtils.createTableFromElement(
  File "/usr/local/lib/python3.8/dist-packages/py4j/java_gateway.py", line 1546, in __getattr__
    raise Py4JError(
py4j.protocol.Py4JError: org.apache.flink.table.utils.python.PythonTableUtils.createTableFromElement does not exist in the JVM

Answer 1

此外，原本我是使用docker部署的flink，考虑到是不是因为主机上无法与容器内的flink程序通信，所以又尝试了在服务器上安装了flink，并成功启动，但都无法执行成功。同时也想问下，如果是使用docker部署的flink和python环境，双方间该如何通信？