[jira] [Resolved] (IMPALA-1112) Remove unnecessary boost/std/misc functions from the cross compiled module.

["Tim Armstrong (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-1112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Armstrong resolved IMPALA-1112.
-----------------------------------
    Fix Version/s: Impala 2.7.0
       Resolution: Fixed

> Remove unnecessary boost/std/misc functions from the cross compiled module.
> ---------------------------------------------------------------------------
>
>                 Key: IMPALA-1112
>                 URL: https://issues.apache.org/jira/browse/IMPALA-1112
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 1.4
>            Reporter: Nong Li
>            Assignee: Michael Ho
>            Priority: Major
>              Labels: codegen
>             Fix For: Impala 2.7.0
>
>
> The module has a init section for initializing static vars. If we include something that contains a static boost/std object, this could pull in a lot of code that we don't need. This code cannot be removed by the internalize optimization pass and results in high compile time.
> As an example, removing the timestamp functions changed compile time from ~700ms -> 70ms. Even with that, we still have random boost functions in there that we are compiling for every query. It's a little tricky to figure out how to organize the includes though.



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