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Posted to issues@arrow.apache.org by "Micah Kornfield (Jira)" <ji...@apache.org> on 2019/09/06 04:21:00 UTC

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

Micah Kornfield created ARROW-6473:
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             Summary: [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


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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