quickwit-oss / quickwit-oss/quickwit

Optimization: filter + scoring by timestamp

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#4,902 2 comments 0 reactions 0 assignees View on GitHub

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enhancement low-priority
Dominant language
Rust
Stars
11.7k
Forks
597
Avg merge
2d 22h
Merged PRs (30d)
37

Description

There are several ideas we could leverage to sort by timestamp.

When we sort AND filter a timestamp range, we end up fetching the timestamp twice.

The timestamp is often almost sorted.
A minor amount of metadata could make it possible to restrict our query.

within [t_start, t_end] implies doc in [doc_a, doc_b]

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing the timestamp filtering, sorting, and scoring paths to understand where the timestamp is fetched twice. Investigate whether metadata can establish that a timestamp range maps to a document range, then define measurements or tests showing the optimization is correct and improves queries.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
performance, search
Issue type
Refactor
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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