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https://issues.apache.org/jira/browse/LUCENE-5046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand closed LUCENE-5046.
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Resolution: Duplicate
I close this issue in favor of LUCENE-5914 that uses shared dictionaries in
order to make decompression faster.
> Explore preset dictionaries for CompressingStoredFieldsFormat
> -------------------------------------------------------------
>
> Key: LUCENE-5046
> URL: https://issues.apache.org/jira/browse/LUCENE-5046
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Trivial
>
> I discussed this possible improvement with Stefan Pohl and Andrzej Białecki
> at Berlin Buzzwords: By having preset dictionaries (which could be
> user-provided and/or computed on a per-block basis), decompression could be
> faster since we would never have to decompress several documents from a block
> in order to access a single document.
> One drawback is that it would require putting some boundaries in the
> compressed stream, so it would maybe decrease a little the compression ratio.
> But then if decompression is faster, we could also afford larger blocks, so I
> think this is worth exploring.
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