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Exporting Datasource to YAML fails #7437

rjurney opened this issue May 3, 2019 · 1 comment


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commented May 3, 2019

Exporting the main sqlite database to YAML via the List Databases interface and its Export to YAML option fails with the error TypeError: '<' not supported between instances of 'dict' and 'dict'.

Expected results

I expect to receive a YAML file.

Actual results

2019-05-02 21:28:47,467:INFO:werkzeug: - - [02/May/2019 21:28:47] "GET /databaseview/list/ HTTP/1.1" 200 -
2019-05-02 21:28:48,209:INFO:werkzeug: - - [02/May/2019 21:28:48] "GET /superset/csrf_token/ HTTP/1.1" 200 -
g2019-05-02 21:37:49,117:INFO:werkzeug: - - [02/May/2019 21:37:49] "POST /databaseview/action_post HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 2309, in __call__
    return self.wsgi_app(environ, start_response)
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 2295, in wsgi_app
    response = self.handle_exception(e)
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 1741, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 35, in reraise
    raise value
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 35, in reraise
    raise value
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask/", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/rjurney/Software/incubator-superset/venv/lib/python3.6/site-packages/flask_appbuilder/", line 578, in action_post
    return action.func(items)
  File "/Users/rjurney/Software/incubator-superset/superset/views/", line 195, in yaml_export
    data = [t.export_to_dict() for t in items]
  File "/Users/rjurney/Software/incubator-superset/superset/views/", line 195, in <listcomp>
    data = [t.export_to_dict() for t in items]
  File "/Users/rjurney/Software/incubator-superset/superset/models/", line 215, in export_to_dict
    key=lambda k: sorted(k.items()))
TypeError: '<' not supported between instances of 'dict' and 'dict'


If applicable, add screenshots to help explain your problem.

How to reproduce the bug

  1. Go to /databaseview/list/
  2. Click on the checkbox for the 'main' database
  3. Select the 'Actions' menu
  4. Click on 'Export to YAML'
  5. Click 'OK'
  6. See error


(please complete the following information):

  • superset version: [e.g. v0.31, release--0.31, 700cbf4f]
  • python version: Python 3.6.7
  • node.js version: v11.6.0
  • npm version: 6.5.0


Make sure these boxes are checked before submitting your issue - thank you!

  • I have checked the superset logs for python stacktraces and included it here as text if there are any.
  • I have reproduced the issue with at least the latest released version of superset.
  • I have checked the issue tracker for the same issue and I haven't found one similar.

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commented May 3, 2019

Issue-Label Bot is automatically applying the label #bug to this issue, with a confidence of 0.96. Please mark this comment with 👍 or 👎 to give our bot feedback!

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