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https://issues.apache.org/jira/browse/HIVEMALL-123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Makoto Yui updated HIVEMALL-123:
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Priority: Minor (was: Major)
> Create generic function for map merge
> -------------------------------------
>
> Key: HIVEMALL-123
> URL: https://issues.apache.org/jira/browse/HIVEMALL-123
> Project: Hivemall
> Issue Type: New Feature
> Reporter: Charles Pritchard
> Priority: Minor
>
> As present in Brickhaus brickhouse.udf.collect.UnionUDAF - it'd be helpful to
> have a method that collects rows of maps into a single map. In this simplest
> use case... select union_map(mapCol) would be fine. There are possible cases
> for lambda execution or append or other failure cases, but I haven't come
> across a strong need for them.
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