Adrien Grand created LUCENE-4871:
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Summary: Sorter API: better compress positions, offsets and
payloads in SortingDocsAndPositionsEnum
Key: LUCENE-4871
URL: https://issues.apache.org/jira/browse/LUCENE-4871
Project: Lucene - Core
Issue Type: Improvement
Reporter: Adrien Grand
Assignee: Adrien Grand
Priority: Trivial
Fix For: 4.3
SortingDocsAndPositionsEnum could easily save memory by using a
Lucene40TCF-like compression method for positions, offsets and payloads:
- delta-encode positions and startOffsets (with the previous end offset),
- store the length of the tokens instead of their end offset (endOffset ==
startOffset + length),
- use a single bit to say whether the token has a payload.
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