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https://issues.apache.org/jira/browse/PARQUET-1820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated PARQUET-1820:
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    Labels: pull-request-available  (was: )

> [C++] Use a column filter hint to inform read prefetching
> ---------------------------------------------------------
>
>                 Key: PARQUET-1820
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1820
>             Project: Parquet
>          Issue Type: Improvement
>          Components: parquet-cpp
>            Reporter: David Li
>            Priority: Major
>              Labels: pull-request-available
>
> As a follow up to PARQUET-1698 and ARROW-7995, we should use the I/O 
> coalescing facility (where available and enabled), in combination with a 
> column filter hint, to compute and prefetch the exact byte ranges we will be 
> reading (using the metadata). This should further improve performance on 
> remote object stores like Amazon S3. 



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