elastic/elasticsearch

Remove XMoreLikeThis

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#10626 opened on Apr 16, 2015

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 (8 comments) (0 reactions) (0 assignees)Java (76,700 stars) (25,882 forks)batch import
:Search Relevance/Search>non-issue>tech-debtTeam:Search Relevancehelp wantedhigh hanging fruit

Description

This class is a fork of Lucene's MoreLikeThis but already diverged quite a lot. If we want to be able to maintain this functionality in the long term, we need to merge improvements back to Lucene, otherwise at some point changes coming from Lucene upgrades will be impossible to reconciliate with changes of this fork.

Contributor guide

Tech stack
java
Domain
backendsearch
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
JavaLucene basicsElasticsearch codebaseUnderstanding of MoreLikeThis
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
First, locate the XMoreLikeThis class in the Elasticsearch codebase (likely under the `org.elasticsearch.index.search` package). Review its usage across the project to ensure it is not referenced elsewhere. Read through the issue comments (8 total) to understand any previous discussion about removal strategy. If the class is unused, propose a pull request to delete it and update any related imports. If it is still used, investigation is needed to determine how to replace it with Lucene's MoreLikeThis or merge changes upstream.