nailo2c commented on code in PR #67356:
URL: https://github.com/apache/airflow/pull/67356#discussion_r3522558500
##########
airflow-core/src/airflow/cli/commands/task_command.py:
##########
@@ -429,6 +430,36 @@ def task_test(args, dag: DAG | None = None) -> None:
passed_in_params = json.loads(args.task_params)
sdk_task.params.update(passed_in_params)
+ if isinstance(sdk_task, MappedOperator):
+ from airflow.sdk.definitions._internal.expandinput import (
+ DictOfListsExpandInput,
+ ListOfDictsExpandInput,
+ )
+
+ expand_input = sdk_task._get_specified_expand_input()
+
+ expand_input_attr = sdk_task._expand_input_attr
+ if isinstance(expand_input, DictOfListsExpandInput):
+ new_expand_input_dict = dict(expand_input.value)
+ for k in expand_input.value:
+ if k in passed_in_params:
+ new_param = passed_in_params[k]
+ new_expand_input_dict[k] = [new_param] *
(args.map_index + 1)
Review Comment:
I think there is a bug here. For example, with a Dag like this:
```python
@task
def consume(a, b):
print(f"a={a}, b={b}")
consume.expand(a=[1, 2, 3], b=[10, 20, 30])
```
Running this works as expected:
```bash
airflow tasks test mapped_override_repro consume 2026-01-01 --map-index 4
```
It prints:
```text
a=2, b=20
```
However, if I only override `b`:
```bash
airflow tasks test mapped_override_repro consume 2026-01-01 --map-index 4
--task-params '{"b": 99}'
```
It prints:
```text
a=1, b=99
```
I would expect `a` to remain resolved from the original `map_index=4`, so
this looks like the override changes the mapping of arguments that were not
overridden.
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