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https://issues.apache.org/jira/browse/ARROW-9137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kouhei Sutou resolved ARROW-9137.
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Fix Version/s: 1.0.0
Resolution: Fixed
Issue resolved by pull request 7637
[https://github.com/apache/arrow/pull/7637]
> [GLib][Ruby] Allow to read Parquet files in chunks (by RowGroup)
> ----------------------------------------------------------------
>
> Key: ARROW-9137
> URL: https://issues.apache.org/jira/browse/ARROW-9137
> Project: Apache Arrow
> Issue Type: Improvement
> Components: GLib, Ruby
> Affects Versions: 0.17.1
> Reporter: Dimitrij Denissenko
> Assignee: Kouhei Sutou
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> At the moment only `gparquet_arrow_file_reader_read_table` is exported which
> requires the reader to load all row-groups. Additionally, it would be
> extremely helpful to have access to the `ReadRowGroup` method which would
> allow reading parts of the file without having to load everything into memory.
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