[LUCENE-10408] Better dense encoding of doc Ids in Lucene91HnswVectorsFormat

• Type: Improvement
• Status: Reopened
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 9.1
• Labels: vector-based-search
• Lucene Fields: New
• Assignee: Mayya Sharipova
• Reporter: Mayya Sharipova
• Created: 04/Feb/22 21:39
• Updated: 27/Sep/22 09:16
• Resolved: 17/Feb/22 10:44

Description

Currently we write doc Ids of all documents that have vectors as is. We should improve their encoding either using delta encoding or bitset.

Issue Links

• links to: GitHub Pull Request #649
• links to: GitHub Pull Request #690
• links to: GitHub Pull Request #708
• links to: GitHub Pull Request #734