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https://issues.apache.org/jira/browse/FLINK-19892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu closed FLINK-19892.
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Fix Version/s: 1.11.3
1.12.0
Resolution: Fixed
Merged to master via a7abe7d6a13bfca168828af912fd3bdb09faeb95 and release-1.11
via 06561515d62deec1b552064b97d5c27495e14f16
> Replace __metaclass__ field with metaclass keyword
> --------------------------------------------------
>
> Key: FLINK-19892
> URL: https://issues.apache.org/jira/browse/FLINK-19892
> Project: Flink
> Issue Type: Improvement
> Components: API / Python
> Reporter: Huang Xingbo
> Assignee: Nicholas Jiang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0, 1.11.3
>
>
> __metaclass__ is not compatible in some scenarios of python3 e.g.
>
> {code:java}
> >>> from pyflink.serializers import Serializer
> >>> import inspect
> >>> inspect.isabstract(Serializer)
> False{code}
>
> We can replace __metaclass__ field with
> [metaclass|https://www.python.org/dev/peps/pep-3115/] keyword to solve these
> problem.
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