我正在尝试序列化PySpark Pipeline对象，以便可以在以后保存和检索它。使用Python pickle库和PySpark的库进行了尝试PickleSerializer，dumps()调用本身失败了。
使用本机pickle库时提供代码段。
pipeline = Pipeline(stages=[tokenizer, hashingTF, lr])
with open ('myfile', 'wb') as f:
pickle.dump(pipeline,f,2)
with open ('myfile', 'rb') as f:
pipeline1 = pickle.load(f)
运行时出现以下错误：
py4j.protocol.Py4JError: An error occurred while calling o32.__getnewargs__. Trace:
py4j.Py4JException: Method __getnewargs__([]) does not exist
at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:335)
at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:344)
at py4j.Gateway.invoke(Gateway.java:252)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:209)
at java.lang.Thread.run(Thread.java:785)
是否可以序列化PySpark Pipeline对象？