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Posted to issues@hivemall.apache.org by "Makoto Yui (JIRA)" <ji...@apache.org> on 2017/07/04 12:10:00 UTC

[jira] [Updated] (HIVEMALL-123) Create generic function for map merge

     [ https://issues.apache.org/jira/browse/HIVEMALL-123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Makoto Yui updated HIVEMALL-123:
--------------------------------
    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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