tomrutter opened a new issue, #39118: URL: https://github.com/apache/airflow/issues/39118
### Description The map_index_template field on a task is used to render a custom name for each individual sub task in a mapped task. It is generated by rendering the task context on the jinja template provided. This rendering happens after the task is completed so it does not appear during or before the task run. The new feature would be to attempt to render and display this field before the task is run (using the context available at the time), with a suitable failback if this is not possible with the context values available. ### Use case/motivation It would be useful to see the custom map index during task runs, when the context information to do so is available. The mapped task index can be used to provide human readable information to distinguish the mapped tasks from one another and would make it easier to track task progress during a dag run. ### Related issues Various issues and PRs have dealt with displaying the custom map index when the task fails. #39065, #39092, #38902, #39087 ### Are you willing to submit a 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://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md) -- 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]
