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fix: preserve extra link XCom keys across task retries #71472

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fix: preserve extra link XCom keys across task retries #71472

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4 changes: 4 additions & 0 deletions airflow-core/src/airflow/api_fastapi/execution_api/routes/task_instances.py
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Original file line number Diff line number Diff line change
Expand Up @@ -291,6 +291,10 @@ def ti_run(
xcom_query = xcom_query.where(XComModel.map_index == map_index)

xcom_keys = list(session.scalars(xcom_query))
# Preserve extra link XCom keys across retries. Extra links are backed
# by XCom rows with keys starting with "_link_", and clearing them on
# retry would lose the per-attempt links for earlier attempts.
xcom_keys = [k for k in xcom_keys if not k.startswith("_link_")]
task_reschedule_count = (
session.scalar(
select(func.count(TaskReschedule.id)).where(TaskReschedule.ti_id == task_instance_id)
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