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