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https://issues.apache.org/jira/browse/BEAM-7358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyu Naoki updated BEAM-7358:
----------------------------
Description:
GroupByKey is useful, but it is difficult to express complex grouping
conditions.
I propose the development of the function to group if there is a common term in
even one of multiple keys.
Like this....
{[A, B], "v1"} \{[A, C], "v2"} \{[C, D], "v3"} \{[E, F], "v4"}
↓↓↓↓↓↓↓↓↓
[{[A, B], "v1"}, {[A, C], "v2"} , {[C, D], "v3"} ]
[{[E, F], "v4"}]
I want to discuss the specification...
was:
GroupByKey is useful, but it is difficult to express complex grouping
conditions.
I propose the development of the function to group if there is a common term in
even one of multiple keys.
Like this....
{[A, B], "v1"}
{[A, C], "v2"}
{[C, D], "v3"}
{[E, F], "v4"}
↓↓↓↓↓↓↓↓↓
[\{[A, B], "v1"}, \{[A, C], "v2"} , \{[C, D], "v3"} ]
[\{[E, F], "v4"}]
> Developing "GroupByMultiKey"
> -----------------------------
>
> Key: BEAM-7358
> URL: https://issues.apache.org/jira/browse/BEAM-7358
> Project: Beam
> Issue Type: New Feature
> Components: beam-model
> Reporter: Hyu Naoki
> Priority: Major
>
> GroupByKey is useful, but it is difficult to express complex grouping
> conditions.
> I propose the development of the function to group if there is a common term
> in even one of multiple keys.
> Like this....
> {[A, B], "v1"} \{[A, C], "v2"} \{[C, D], "v3"} \{[E, F], "v4"}
> ↓↓↓↓↓↓↓↓↓
> [{[A, B], "v1"}, {[A, C], "v2"} , {[C, D], "v3"} ]
> [{[E, F], "v4"}]
>
> I want to discuss the specification...
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