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Posted to issues@arrow.apache.org by "Francois Saint-Jacques (Jira)" <ji...@apache.org> on 2019/12/05 20:50:00 UTC

[jira] [Assigned] (ARROW-843) [C++] Implement Schema unification, merging unequal but equivalent schemas

     [ https://issues.apache.org/jira/browse/ARROW-843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Francois Saint-Jacques reassigned ARROW-843:
--------------------------------------------

    Assignee: Francois Saint-Jacques

> [C++] Implement Schema unification, merging unequal but equivalent schemas
> --------------------------------------------------------------------------
>
>                 Key: ARROW-843
>                 URL: https://issues.apache.org/jira/browse/ARROW-843
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++, C++ - Dataset
>            Reporter: Wes McKinney
>            Assignee: Francois Saint-Jacques
>            Priority: Major
>              Labels: dataset, parquet
>             Fix For: 1.0.0
>
>
> Some Parquet datasets may contain schemas with mixed REQUIRED/OPTIONAL repetition types. While such schemas aren't strictly equal, we will need to consider them equivalent on the read path



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