subkanthi edited a comment on issue #20442:
URL: https://github.com/apache/airflow/issues/20442#issuecomment-1006075195
The problem is here in this line, because the value is of type 'str' and so
the `not isinstance` isnt working as expected.
```
# If we have a value, validate it once. May raise ValueError.
if not isinstance(value, ArgNotSet):
try:
jsonschema.validate(value, schema,
format_checker=FormatChecker())
except ValidationError as err:
raise ValueError(err)
```
<img width="1247" alt="Screen Shot 2022-01-05 at 4 01 44 PM"
src="https://user-images.githubusercontent.com/17434846/148288963-ff3b4950-16e3-47d6-aa2d-b3775e9fd35e.png";>
Looks like it reads the default as a string from data.
`| {"dag": {"tasks": [{"pool": "default_pool", "label": "task1", "params":
{"wd": {"schema": {"__var": {"type": "number"}, "__type": "dict"}, "__class":
"airflow.models.param.Param", "default": "<airflow.utils.types.ArgNotSet object
at 0xffff7b0c0588>", "description": "demo numeric param"}}, "_inlets": [],
"task_id": "task1", "_outlets": [], "ui_color": "#e8f7e4", "_is_dummy": true,
"_task_type": "DummyOperator", "start_date": 1623801600.0, "ui_fgcolor":
"#000", "_task_module": "airflow.operators.dummy", "template_ext": [],
"template_fields": [], "_downstream_task_ids": [], "template_fields_renderers":
{}}], "params": {"wd": {"schema": {"__var": {"type": "number"}, "__type":
"dict"}, "__class": "airflow.models.param.Param", "default":
"<airflow.utils.types.ArgNotSet object at 0xffff8959f0b8>", "description":
"demo numeric param"}}, "_dag_id": "mydag", "catchup": false, "fileloc":
"/home/parallels/Documents/GITHUB/airflow/airflow/example_dags/example_test_dag.py",
"timezone": "UTC"
, "edge_info": {}, "_task_group": {"tooltip": "", "children": {"task1":
["operator", "task1"]}, "ui_color": "CornflowerBlue", "_group_id": null,
"ui_fgcolor": "#000", "prefix_group_id": true, "upstream_task_ids": [],
"upstream_group_ids": [], "downstream_task_ids": [], "downstream_group_ids":
[]}, "default_args": {"__var": {"start_date": {"__var": 1623801600.0, "__type":
"datetime"}, "depends_on_past": false}, "__type": "dict"}, "dag_dependencies":
[], "schedule_interval": null}, "__version": 1} |
`
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