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Posted to jira@arrow.apache.org by "Joris Van den Bossche (Jira)" <ji...@apache.org> on 2020/12/10 21:09:00 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 ]
Joris Van den Bossche updated ARROW-8282:
-----------------------------------------
Fix Version/s: 3.0.0
> [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: 3.0.0
>
>
> 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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