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https://issues.apache.org/jira/browse/LUCENE-7098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15191544#comment-15191544
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Michael McCandless commented on LUCENE-7098:
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Thanks [~rcmuir], those are good ideas, I'll fold those in.
> BKDWriter should write ords as ints when possible during offline sort
> ---------------------------------------------------------------------
>
> Key: LUCENE-7098
> URL: https://issues.apache.org/jira/browse/LUCENE-7098
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Attachments: LUCENE-7098.patch
>
>
> Today we write all ords as longs, since we support more than 2.1B values in
> one segment, but the vast majority of the time an int would suffice.
> We could look into vLong, but this quickly gets tricky because {{BKDWriter}}
> needs random access to the file and we rely on fixed-width entries to do this
> now.
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