apache/lucene

Move long[] group varint to backward-codecs

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#15113 opened on Aug 22, 2025

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 (5 comments) (2 reactions) (0 assignees)Java (2,179 stars) (879 forks)batch import
good first issuetype:task

Description

Description

This is a follow-up of #15104. The benchmark was accidentally calling legacy code that writes the output of a varint group into a long[]. This wouldn't have happened if this code - which is only used by backward codecs - was in lucene/backward-codecs.

Contributor guide

Tech stack
java
Domain
backendperformance
Issue type
refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
understanding of backward codecs in Lucenefamiliarity with varint encoding
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Review the referenced issue #15104 to understand the context. Locate the long[] group varint code currently in main codebase. Identify the appropriate location in lucene/backward codecs module. Ensure the move preserves backwards compatibility and follows the existing patterns in backward codecs. Check if any tests or imports need updating. Consider commenting on the issue to confirm the approach before proceeding.