pyarrow does not know how to serialize objects of type

sql_lab and also visualization doesn’t work because of pyarrow can’t serialize objects

Expected results

return query result

Actual results

pyarrow does not know how to serialize objects of type <class 'pandas.core.arrays.integer.IntegerArray'>.

Screenshots

How to reproduce the bug

1. Go to sql_lab
2. Run a query like SELECT *
3. See error

Environment

• superset version: branch master on 2019-10-12 18:38
• python version: 3.7
• node.js version: 10.16.3
• npm version: 6.9.0

Checklist

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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[robdiciuccio]

Thanks for reporting this issue. This may be related to https://github.com/apache/incubator-superset/issues/8225. Are you using Presto by chance?

You can disable msgpack and pyarrow serialization by setting RESULTS_BACKEND_USE_MSGPACK = False in superset_config.py until this issue is resolved.