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Posted to jira@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2021/01/04 19:26:00 UTC

[jira] [Updated] (ARROW-8282) [C++/Python][Dataset] Support schema evolution for integer columns

     [ https://issues.apache.org/jira/browse/ARROW-8282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ben Kietzman updated ARROW-8282:
--------------------------------
    Fix Version/s:     (was: 3.0.0)
                   4.0.0

> [C++/Python][Dataset] Support schema evolution for integer columns
> ------------------------------------------------------------------
>
>                 Key: ARROW-8282
>                 URL: https://issues.apache.org/jira/browse/ARROW-8282
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Uwe Korn
>            Priority: Major
>              Labels: dataset
>             Fix For: 4.0.0
>
>
> When reading in a dataset where the schema specifies that column X is of type {{int64}} but the partition actually contains the data stored in that columns as {{int32}}, an upcast should be done.



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