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https://issues.apache.org/jira/browse/LUCENE-7122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15208058#comment-15208058
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Dawid Weiss commented on LUCENE-7122:
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> progress not perfection.
Well, that depends on whether you're focused on the task or paranoid. I'm still
trying to figure out which group I belong to...
With regard to the FST builder -- nobody is to blame, I just observed the fact:
there have been so many improvements and there are so many code paths inside
that code that it's hard to grasp, especially for newcomers. Whether it's
possible to rewrite it in a cleaner way is a whole different issue.
> BytesRefArray can be more efficient for fixed width values
> ----------------------------------------------------------
>
> Key: LUCENE-7122
> URL: https://issues.apache.org/jira/browse/LUCENE-7122
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: master, 6.1
>
> Attachments: LUCENE-7122.patch, LUCENE-7122.patch
>
>
> Today {{BytesRefArray}} uses one int ({{int[]}}, overallocated) per
> value to hold the length, but for dimensional points these values are
> always the same length.
> This can save another 4 bytes of heap per indexed dimensional point,
> which is a big improvement (more points can fit in heap at once) for
> 1D and 2D lat/lon points.
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