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https://issues.apache.org/jira/browse/ARROW-554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney updated ARROW-554:
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Fix Version/s: (was: 0.12.0)
0.13.0
> [C++] Implement functions to conform unequal dictionaries amongst multiple
> Arrow arrays
> ---------------------------------------------------------------------------------------
>
> Key: ARROW-554
> URL: https://issues.apache.org/jira/browse/ARROW-554
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
> Labels: Analytics
> Fix For: 0.13.0
>
>
> We may wish to either
> * Conform the dictionary indices to reference a common dictionary
> * Concatenate indices into a new array with a common dictionary
> This is related to in-memory dictionary encoding, as you start with a
> partially-built dictionary and then add entries as you observe new ones in
> other dictionaries, all the while "rebasing" indices to consistently
> reference the same dictionary at the end
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