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https://issues.apache.org/jira/browse/CASSANDRA-8053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Stupp updated CASSANDRA-8053:
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Attachment: 8053v2.txt
> Support for user defined aggregate functions
> --------------------------------------------
>
> Key: CASSANDRA-8053
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8053
> Project: Cassandra
> Issue Type: New Feature
> Reporter: Robert Stupp
> Assignee: Robert Stupp
> Labels: cql, udf
> Fix For: 3.0
>
> Attachments: 8053v1.txt, 8053v2.txt
>
>
> CASSANDRA-4914 introduces aggregate functions.
> This ticket is about to decide how we can support "user defined aggregate
> functions". UD aggregate functions should be supported for all UDF flavors
> (class, java, jsr223).
> Things to consider:
> * Special implementations for each scripting language should be omitted
> * No exposure of internal APIs (e.g. {{AggregateFunction}} interface)
> * No need for users to deal with serializers / codecs
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