Global state of dag_run is not in sync with status of the subtasks after re-run of a subtask #1251
Description
Environment
- Version of Airflow:1.6.2
- Operating System: linux
- Python Version: 2.7.11
Description of Issue
Suppose you have a dag_run with one failed task. It is possible to re-run this failed task via the UI. Suppose that after the re-run the state of the task becomes success, then the global state of the dag_run stays "failed" and is not updated to "success". You can see this clearly in the tree view (= for a certain dag-run, the global state is red , while all the substasks are green)