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https://issues.apache.org/jira/browse/ARROW-110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15266944#comment-15266944
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Jacques Nadeau commented on ARROW-110:
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We chose 2x in Java since we're using a buddy allocator, fyi.
> [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
>
> 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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