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https://issues.apache.org/jira/browse/LUCENE-7122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15207432#comment-15207432
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Michael McCandless commented on LUCENE-7122:
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bq. Of course I wouldn't veto it.
OK thanks. Of the two patches here, the first one at least seems the least
controversial, even if it's not perfect ... progress not perfection.
bq. This is what happened to fst builder, for example
Sigh :(
> 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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