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https://issues.apache.org/jira/browse/FLINK-5767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15879512#comment-15879512
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ASF GitHub Bot commented on FLINK-5767:
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Github user shaoxuan-wang commented on the issue:
https://github.com/apache/flink/pull/3354
@fhueske thanks for the review. I agree with you that we should provide
more specific types for the accumulators (backend state). I will update code
today to address all your comments.
> New aggregate function interface and built-in aggregate functions
> -----------------------------------------------------------------
>
> Key: FLINK-5767
> URL: https://issues.apache.org/jira/browse/FLINK-5767
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Shaoxuan Wang
> Assignee: Shaoxuan Wang
>
> Add a new aggregate function interface. This includes implementing the
> aggregate interface, migrating the existing aggregation functions to this
> interface, and adding the unit tests for these functions.
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