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https://issues.apache.org/jira/browse/FLINK-37420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17932609#comment-17932609
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Zakelly Lan commented on FLINK-37420:
-------------------------------------
Master: 141363f0
2.0: in progress
> AbstractAggregatingState add may return wrong result
> ----------------------------------------------------
>
> Key: FLINK-37420
> URL: https://issues.apache.org/jira/browse/FLINK-37420
> Project: Flink
> Issue Type: Bug
> Components: Runtime / State Backends
> Affects Versions: 2.0.0
> Reporter: Yue Ma
> Assignee: Yue Ma
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0.0
>
>
> When calling _add()_ in *AbstractAggregatingState* , if the acc is empty, the
> value of _updateInternal_ will only be
> _this.aggregateFunction.createAccumulator()_ , but it should actually be
> this.{_}aggregateFunction.add(value,
> this.aggregateFunction.createAccumulator()){_}
>
>
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