ashb opened a new pull request, #23119:
URL: https://github.com/apache/airflow/pull/23119
At first glance this looks like a lot of un-related changed, but it is
all related to handling errors in unmapping:
- Ensure that SimpleTaskInstance (and thus the Zombie callback) knows
about map_index, and simplify the code for SimpleTaskInstance -- no
need for properties, just attributes works.
- Be able to create a TaskFail from a TI, not a Task.
This is so that we can create the TaskFail with the mapped task so we
can delay unmapping the task in TI.handle_failure as long as possible.
- Change email_alert and get_email_subject_content to take the task so
we can pass the unmapped Task around.
Fixes #23107
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