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https://issues.apache.org/jira/browse/FLINK-5984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timo Walther resolved FLINK-5984.
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Resolution: Fixed
Fix Version/s: 1.3.0
Fixed in 1.3.0: 65ccf7cdfa9a52ccc7edcab3615b147f8dafdee7
> Add resetAccumulator method for AggregateFunction
> -------------------------------------------------
>
> Key: FLINK-5984
> URL: https://issues.apache.org/jira/browse/FLINK-5984
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Shaoxuan Wang
> Fix For: 1.3.0
>
>
> Right now we have to create a new accumulator object if we just want to reset
> it. We should allow passing the old one as a {{reuse}} object to
> {{AggregateFunction#createAccumulator}}. The aggregate function then can
> decide if it wants to create a new object or reset the old one.
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