JeremyXin opened a new issue, #12860: URL: https://github.com/apache/seatunnel/issues/12860
### Search before asking - [x] I had searched in the [issues](https://github.com/apache/seatunnel/issues?q=is%3Aissue+label%3A%22bug%22) and found no similar issues. ### What happened ### Background In [PR #9760](https://github.com/apache/seatunnel/pull/9760), @Hisoka-X provided an example of the expected structured document output. In that example, `child_ids` is an array of element IDs, and an element without children has an empty array. The existing `MarkdownReadStrategy` output does not fully follow this structure: `child_ids` may be a comma-separated string or `null`, and heading-to-content relationships are not consistently reflected in `parent_id` and `child_ids`. This also leaves its `child_ids` type inconsistent with the output expected from `PdfReadStrategy`. ### Expected behavior Markdown and PDF readers should use the same `child_ids` field type and relationship semantics: - Emit `child_ids` as an array of strings. - Emit an empty array for elements without children. - Keep `parent_id` and `child_ids` consistent, including relationships between headings and their content. ### Motivation A consistent document schema lets downstream consumers handle Markdown and PDF rows in the same way and reduces the maintenance cost of format-specific handling. ### SeaTunnel Version 2.3.13 ### SeaTunnel Config ```conf none ``` ### Running Command ```shell none ``` ### Error Exception ```log none ``` ### Zeta or Flink or Spark Version _No response_ ### Java or Scala Version _No response_ ### Screenshots <img width="3172" height="238" alt="Image" src="https://github.com/user-attachments/assets/ca912f37-9077-4851-af13-0ee77459379d"; /> The value corresponding to the position index of the "child_ids" field after parsing the Markdown file is null. ### Are you willing to submit PR? - [x] Yes I am willing to submit a PR! ### Code of Conduct - [x] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
