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Posted to issues@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2019/09/18 12:17:00 UTC

[jira] [Updated] (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 ]

Antoine Pitrou updated ARROW-6473:
----------------------------------
    Fix Version/s: 1.0.0

> [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
>             Fix For: 1.0.0
>
>
> 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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