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https://issues.apache.org/jira/browse/FLINK-40436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18117914#comment-18117914
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Chengyu Wang commented on FLINK-40436:
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Hi [~dianfu], I'd like to work on this issue. Can you assign it to me?
> Add UDAF support to DataFrame API
> ---------------------------------
>
> Key: FLINK-40436
> URL: https://issues.apache.org/jira/browse/FLINK-40436
> Project: Flink
> Issue Type: Sub-task
> Components: API / Python
> Reporter: Liu Liu
> Priority: Major
>
> Add user-defined aggregate-function support:
>
> {code:java}
> def udaf(
> func=None,
> *,
> return_dtype=None,
> accumulator_type=None,
> func_type="general",
> deterministic=True,
> name=None,
> ) -> DataFrameUDAFWrapper {code}
>
>
> {{}}
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