potiuk opened a new pull request, #68418: URL: https://github.com/apache/airflow/pull/68418
Reverts #59691 (`a5ffa6c794`). #59691 regressed per-index trigger-rule evaluation in mapped task groups: a downstream task whose upstream is in the same mapped task group gets its summary instance (`map_index=-1`) bound to upstream index `0`, so a single failed upstream instance marks the downstream `UPSTREAM_FAILED` and it never expands. This broke `test_one_failed_trigger_rule_in_mapped_task_group_is_per_index` and turned the `Core...Serialization` job red on `main` (scheduled run [27376318492](https://github.com/apache/airflow/actions/runs/27376318492)), blocking the merge queue. Reverting to green `main` immediately. The proper redo (satisfying both #59691's and #50210's scenarios) is tracked in #68417. Verified locally: the previously-failing `test_one_failed_trigger_rule_in_mapped_task_group_is_per_index` and `test_one_failed_trigger_rule_runs_on_indirect_failure_in_mapped_task_group` pass after the revert. --- ##### Was generative AI tooling used to co-author this PR? - [X] Yes — Claude Code (Opus 4.8) Generated-by: Claude Code (Opus 4.8) following [the guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#gen-ai-assisted-contributions) -- 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]
