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https://issues.apache.org/jira/browse/LUCENE-10536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand resolved LUCENE-10536.
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Fix Version/s: 9.2
Resolution: Fixed
> Doc values terms dicts should use the first term of each block as a dictionary
> ------------------------------------------------------------------------------
>
> Key: LUCENE-10536
> URL: https://issues.apache.org/jira/browse/LUCENE-10536
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: 9.2
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Doc values terms dictionaries split data into blocks of 64 terms, where the
> first term is written uncompressed (which is useful for binary searches), and
> the 63 other terms are encoded by taking the difference with the previous
> term and compressing all suffixes together with LZ4.
> With this format, the suffix of the second term is also unlikely to benefit
> from any compression, since it doesn't have data to search for duplicate
> bytes into besides itself. A minor improvement we could make would consist of
> using the first term as a dictionary for suffixes of terms 2..64.
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