Adrien Grand created LUCENE-5046:
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Summary: 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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