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Posted to jira@arrow.apache.org by "Micah Kornfield (Jira)" <ji...@apache.org> on 2021/10/08 05:14:00 UTC

[jira] [Resolved] (ARROW-13257) [Java][Dataset] Allow passing empty columns for projection

     [ https://issues.apache.org/jira/browse/ARROW-13257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Micah Kornfield resolved ARROW-13257.
-------------------------------------
    Resolution: Fixed

Issue resolved by pull request 10652
[https://github.com/apache/arrow/pull/10652]

> [Java][Dataset] Allow passing empty columns for projection
> ----------------------------------------------------------
>
>                 Key: ARROW-13257
>                 URL: https://issues.apache.org/jira/browse/ARROW-13257
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Java
>    Affects Versions: 4.0.1
>            Reporter: Hongze Zhang
>            Assignee: Hongze Zhang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 6.0.0
>
>          Time Spent: 4h 40m
>  Remaining Estimate: 0h
>
> Projecting on empty columns (functionally like a pure metadata query on source of data) was supported in C++ Dataset API in ARROW-11174. This is to align Java API's behavior within C++.



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