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https://issues.apache.org/jira/browse/AIRFLOW-1177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16136809#comment-16136809
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Ash Berlin-Taylor commented on AIRFLOW-1177:
--------------------------------------------
I think this issue is larger than just JSON -- {{setdefault}} will die with a
similar error if the object already exists!
> variable json deserialize does not work at set defaults
> -------------------------------------------------------
>
> Key: AIRFLOW-1177
> URL: https://issues.apache.org/jira/browse/AIRFLOW-1177
> Project: Apache Airflow
> Issue Type: Bug
> Components: models
> Affects Versions: Airflow 1.8
> Reporter: barak schoster
> Assignee: barak schoster
>
> at line:
> https://github.com/apache/incubator-airflow/blob/master/airflow/models.py#L3685
> obj has no attribute val, it is the val itself.
> it will throw error like:
> Variable.setdefault("some_key",
> deserialize_json=True,default=json.dumps(default_dag_variables))
> File "/usr/local/lib/python2.7/site-packages/airflow/models.py", line 3586,
> in setdefault
> return json.loads(obj.val)
> AttributeError: 'unicode' object has no attribute 'val'
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