In FusionInsight HD, what are the computing frameworks that can be used in real-time processing scenarios? (multiple choice)

In FusionInsight HD, when using Streaming's ACK mechanism, which of the following statements are correct? (multiple choice)

Which of the following methods can generate DStream objects?

If a user wants to develop an application to access the HBase service, he first applies for a machine-to-machine account teste1, and sets the permission to access the HBase service: then download the keytab file of the account and use the account to run the application. Subsequent business requirements for this application require access to the Hive service. After the tested user is granted access to the Hive component, the user's keytab file needs to be re-downloaded.

In FusionInsight HD, which method of the OozieClient class will be called by the JAVA API of the Oozie client when running tasks?