bramhanandlingala opened a new pull request, #68454: URL: https://github.com/apache/airflow/pull/68454
## Description This change reintroduces the placeholder upstream map-index resolution behavior from #59691 while avoiding the regression that caused incorrect trigger-rule evaluation in mapped task groups. The placeholder-to-expanded-instance (`-1` → `0`) resolution is now applied only where required for XCom resolution. Trigger-rule dependency evaluation continues to use the original map-index resolution behavior, preserving per-index expansion semantics for mapped task groups. This ensures that downstream placeholder tasks can correctly resolve upstream references after expansion without affecting the behavior validated by the regressions addressed in #50210. ## Tests * `test_downstream_placeholder_handles_upstream_post_expansion` * `test_one_failed_trigger_rule_in_mapped_task_group_is_per_index` * `test_one_failed_trigger_rule_runs_on_indirect_failure_in_mapped_task_group` Fixes: #68417 -- 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]
