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https://issues.apache.org/jira/browse/LUCENE-5882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-5882:
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Attachment: LUCENE-5882.patch
Patch.
Also when cardinality is low (there would be no reverse index), compression
saves very little RAM, so just encode as variable binary for a little extra
speed since its going to be under 8KB ram for addressing anyway.
> add 4.10 docvaluesformat
> ------------------------
>
> Key: LUCENE-5882
> URL: https://issues.apache.org/jira/browse/LUCENE-5882
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Attachments: LUCENE-5882.patch
>
>
> We can improve the current format in a few ways:
> * speed up Sorted/SortedSet byte[] lookup by structuring the term blocks
> differently (allow random access, more efficient bulk i/o)
> * speed up reverse lookup by adding a reverse index (small: just every
> 1024'th term with useless suffixes removed).
> * use slice API for access to access to binary content, too.
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