github-actions[bot] opened a new pull request, #51673: URL: https://github.com/apache/airflow/pull/51673
The `dag.test` method currently (in 3.0.2) clears dag runs before running ( [code](https://github.com/apache/airflow/blob/3.0.2/task-sdk/src/airflow/sdk/definitions/dag.py#L1092-L1097) ) the dag. For that it uses `SchedulerDAG.clear_dags`, which create `SchedulerDAG` from Task SDK DAG -- to do that it uses [`deepcopy.copy`](https://github.com/apache/airflow/blob/3.0.2/airflow-core/src/airflow/models/dag.py#L1797). Now that works for most cases, but not where `jinja2.Template` class is passed as a Task/Operator argument because of [this issue](https://github.com/pallets/jinja/issues/758). ```python In [1]: from copy import deepcopy ...: ...: from jinja2 import Template ...: ...: deepcopy(Template('')) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) Cell In[1], line 5 1 from copy import deepcopy 3 from jinja2 import Template ----> 5 deepcopy(Template('')) File ~/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/lib/python3.12/copy.py:162, in deepcopy(x, memo, _nil) 160 y = x 161 else: --> 162 y = _reconstruct(x, memo, *rv) 164 # If is its own copy, don't memoize. 165 if y is not x: File ~/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/lib/python3.12/copy.py:253, in _reconstruct(x, memo, func, args, state, listiter, dictiter, deepcopy) 251 if deep and args: 252 args = (deepcopy(arg, memo) for arg in args) --> 253 y = func(*args) 254 if deep: 255 memo[id(x)] = y File ~/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/lib/python3.12/copyreg.py:99, in __newobj__(cls, *args) 98 def __newobj__(cls, *args): ---> 99 return cls.__new__(cls, *args) TypeError: Template.__new__() missing 1 required positional argument: 'source' ``` This is a general issue that can affect any DAG using custom arguments that store or cache Jinja2 Template objects or similar. Clearly, the longer term solution for dag.test is to not use SchedulerDAG like that and instead call some task Execution endpoint to clear dagruns -- but this works for 3.0.x. (cherry picked from commit 75f8aa9) Co-authored-by: Kaxil Naik <[email protected]> -- 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]
