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Posted to issues@arrow.apache.org by "Micah Kornfield (Jira)" <ji...@apache.org> on 2019/12/02 01:24:00 UTC

[jira] [Resolved] (ARROW-6473) [Format] Clarify dictionary encoding edge cases

     [ https://issues.apache.org/jira/browse/ARROW-6473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Micah Kornfield resolved ARROW-6473.
------------------------------------
    Resolution: Fixed

Issue resolved by pull request 5585
[https://github.com/apache/arrow/pull/5585]

> [Format] Clarify dictionary encoding edge cases
> -----------------------------------------------
>
>                 Key: ARROW-6473
>                 URL: https://issues.apache.org/jira/browse/ARROW-6473
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Documentation, Format
>            Reporter: Micah Kornfield
>            Assignee: Micah Kornfield
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.0.0
>
>          Time Spent: 3h 50m
>  Remaining Estimate: 0h
>
> Several recent threads on the mailing list:
> 1.  Edge case for all null columns and interleaved dictionaries
> 2. Semantics non-delta dictionaries (and relation to the file format).
> 3.  Propose a forward compatible enum so dictionaries can represented as other types besides for a "flat" vector.



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