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

[jira] [Closed] (ARROW-11047) [Rust] [DataFusion] ParquetTable should avoid scanning all files twice

     [ https://issues.apache.org/jira/browse/ARROW-11047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Lamb closed ARROW-11047.
-------------------------------
    Resolution: Invalid

> [Rust] [DataFusion] ParquetTable should avoid scanning all files twice
> ----------------------------------------------------------------------
>
>                 Key: ARROW-11047
>                 URL: https://issues.apache.org/jira/browse/ARROW-11047
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust - DataFusion
>            Reporter: Andy Grove
>            Priority: Minor
>
> ParquetTable currently reads the metadata for all files once in the constructor in order to get the schema, and does it again each time scan() is called.
> We could read the metadata once and cache it instead.



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