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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/07/05 08:07:00 UTC
[jira] [Updated] (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 ]
ASF GitHub Bot updated ARROW-13257:
-----------------------------------
Labels: pull-request-available (was: )
> [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
> Time Spent: 10m
> 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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