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Posted to dev@parquet.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/03/27 20:44:00 UTC

[jira] [Updated] (PARQUET-1820) [C++] Use a column filter hint to inform read prefetching

     [ https://issues.apache.org/jira/browse/PARQUET-1820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated PARQUET-1820:
------------------------------------
    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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