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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2019/03/08 00:46:00 UTC

[jira] [Commented] (ARROW-2801) [Python] Implement splt_row_groups for ParquetDataset

    [ https://issues.apache.org/jira/browse/ARROW-2801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16787375#comment-16787375 ] 

Wes McKinney commented on ARROW-2801:
-------------------------------------

I definitely will want to account for this need in https://docs.google.com/document/d/1bVhzifD38qDypnSjtf8exvpP3sSB5x_Kw9m-n66FB2c/edit so that a single file can yield multiple independently-read fragments (for parallel processing)

> [Python] Implement splt_row_groups for ParquetDataset
> -----------------------------------------------------
>
>                 Key: ARROW-2801
>                 URL: https://issues.apache.org/jira/browse/ARROW-2801
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Python
>            Reporter: Robbie Gruener
>            Assignee: Robbie Gruener
>            Priority: Minor
>              Labels: parquet, pull-request-available
>             Fix For: 0.13.0
>
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> Currently the split_row_groups argument in ParquetDataset yields a not implemented error. An easy and efficient way to implement this is by using the summary metadata file instead of opening every footer file



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