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Posted to jira@arrow.apache.org by "Andrew Lamb (Jira)" <ji...@apache.org> on 2021/04/26 13:33:02 UTC

[jira] [Commented] (ARROW-11991) [Rust][DataFusion] Maintain partition information in Union

    [ https://issues.apache.org/jira/browse/ARROW-11991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332396#comment-17332396 ] 

Andrew Lamb commented on ARROW-11991:
-------------------------------------

Migrated to github: https://github.com/apache/arrow-datafusion/issues/189

> [Rust][DataFusion] Maintain partition information in Union
> ----------------------------------------------------------
>
>                 Key: ARROW-11991
>                 URL: https://issues.apache.org/jira/browse/ARROW-11991
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust - DataFusion
>            Reporter: Daniël Heres
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 5h 20m
>  Remaining Estimate: 0h
>
> Currently it returns Partitioning::UnknownPartitioning(num_partitions) based on the sum of partition counts (if available) of the underlying inputs. In case of another partition scheme - such as hash partitioning, it would be better to keep that information available, so other optimizations could be used.



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