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https://issues.apache.org/jira/browse/GEARPUMP-289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manu Zhang resolved GEARPUMP-289.
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Resolution: Fixed
Fix Version/s: 0.8.3
Issue resolved by pull request 167
[https://github.com/apache/incubator-gearpump/pull/167]
> Add FoldFunction
> ----------------
>
> Key: GEARPUMP-289
> URL: https://issues.apache.org/jira/browse/GEARPUMP-289
> Project: Apache Gearpump
> Issue Type: Sub-task
> Components: streaming
> Affects Versions: 0.8.2
> Reporter: Manu Zhang
> Assignee: Manu Zhang
> Fix For: 0.8.3
>
>
> {{FoldFunction}} is a more general case of the existing {{ReduceFunction}}.
> It allows users to combine input values and put it into an accumulator (e.g.
> {{Collection}}). Without it, we have to firstly map an element to a
> collection and reduce over all collections, which is verbose and inefficient.
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