huozhanfeng commented on a change in pull request #16768:
URL: https://github.com/apache/airflow/pull/16768#discussion_r664620009
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File path: airflow/dag_processing/processor.py
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@@ -573,6 +573,7 @@ def _execute_task_callbacks(self, dagbag: DagBag, request:
TaskCallbackRequest):
ti.start_date = simple_ti.start_date
ti.end_date = simple_ti.end_date
ti.try_number = simple_ti.try_number
+ ti.hostname = simple_ti.hostname
Review comment:
Resolved it and let the `ti.refresh_from_db()` action only runs in the
failure_callback block due to performance concern.
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