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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2019/03/30 20:11:00 UTC

[jira] [Closed] (ARROW-110) [C++] Decide on optimal growth factor when appending to buffers/arrays

     [ https://issues.apache.org/jira/browse/ARROW-110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney closed ARROW-110.
------------------------------
    Resolution: Done

It seems we'll settle on 2x for now until it can be demonstrated to be a performance problem

> [C++] Decide on optimal growth factor when appending to buffers/arrays
> ----------------------------------------------------------------------
>
>                 Key: ARROW-110
>                 URL: https://issues.apache.org/jira/browse/ARROW-110
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Micah Kornfield
>            Priority: Major
>
> There is some evidence that powers of 2 might not be optimal (the facebook folly library suggests this in there explanation of why they have there own vector type).  They use 1.5 (as do other implementations that don't use two).



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