Search before asking

• I had searched in the issues and found no similar issues.

Description

在使用doris on es的过程中，发现需要在doris中为es中的目标index建立外表，且外表中的字段都是固定的。而es自身在特定参数下是可以支持动态扩展mappin的。由此想询问是否可以在doris on es中支持动态扩展doris字段，以达到更好的操作es

Use case

• No response*

Related issues

• No response*

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct