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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2020/09/03 14:50:00 UTC

[jira] [Assigned] (ARROW-9863) [C++] [PARQUET] Optimize meta data recovery of ApplicationVersion

     [ https://issues.apache.org/jira/browse/ARROW-9863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou reassigned ARROW-9863:
-------------------------------------

    Assignee: Antoine Pitrou

> [C++] [PARQUET] Optimize meta data recovery of ApplicationVersion
> -----------------------------------------------------------------
>
>                 Key: ARROW-9863
>                 URL: https://issues.apache.org/jira/browse/ARROW-9863
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 1.0.0
>            Reporter: Pierre Belzile
>            Assignee: Antoine Pitrou
>            Priority: Major
>             Fix For: 2.0.0
>
>
> The class contains two large regexes which are compiled in the ApplicationVersion::ApplicationVersion(const std:::string) constructor. This is the constructor that is used when reading files. 
> I stopped a server in gdb that had been processing several files at once and 4 threads out of 8 were building those regexes!



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