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https://issues.apache.org/jira/browse/FLINK-22297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu closed FLINK-22297.
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Fix Version/s: 1.12.3
1.13.0
Resolution: Fixed
Merged to
- master via 24031e55e4cf35a5818db2e927e65b290a9b2aed
- release-1.13 via 5abd413e61185ea3eb02d28cbf72eae1ec4b1bfa
- release-1.12 via 599b7ee7a3505fcc875aafb75a2b061684881b74
> Perform early check to ensure that the length of the result is the same as
> the input for Pandas UDF
> ---------------------------------------------------------------------------------------------------
>
> Key: FLINK-22297
> URL: https://issues.apache.org/jira/browse/FLINK-22297
> Project: Flink
> Issue Type: Improvement
> Components: API / Python
> Reporter: Dian Fu
> Assignee: Dian Fu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0, 1.12.3
>
>
> For Pandas UDF, the input type for each input argument is Pandas.Series and
> the result type is also of type Pandas.Series. Besides, the length of the
> result should be the same as the inputs. If this is not the case, currently
> the behavior is unclear. We should perform early check for this and provide a
> clear error message.
> See
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/PyFlink-Vectorized-UDF-throws-NullPointerException-td42952.html
> and
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/PyFlink-called-already-closed-and-NullPointerException-td42997.html
> for more details.
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