opensearch-project/OpenSearch

[Feature Request] Make multi-node gradle test clusters work with IntelliJ debugger

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#19342 opened on Sep 19, 2025

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 (5 comments) (0 reactions) (1 assignee)Java (8,123 stars) (1,505 forks)batch import
Buildenhancementgood first issue

Description

Is your feature request related to a problem? Please describe

When running local clusters with ./gradlew run you can provide -PnumNodes=<number of nodes> to run a cluster locally with more than one node. This is useful but unfortunately you can't use it with --debug-jvm. It'd be great if you could use both simultaneously.

Describe the solution you'd like

Currently it fails because each node expects a different debug server running on ports 5005, 5006, and 5007:

Running opensearch in debug mode (client), node{::runTask-0} expecting running debug server on port 5005
Running opensearch in debug mode (client), node{::runTask-1} expecting running debug server on port 5006
Running opensearch in debug mode (client), node{::runTask-2} expecting running debug server on port 5007

Maybe they could all point towards the same server at 5005?

Related component

Build

Describe alternatives you've considered

No response

Additional context

No response

Contributor guide

Tech stack
java
Domain
build system
Issue type
feature
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.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Gradle knowledgeJava debuggingOpenSearch build setup
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the Gradle task configuration for multi node clusters in the build scripts (likely build.gradle or related files). The current implementation assigns unique debug ports per node (5005, 5006, etc.). The goal is to allow all nodes to connect to the same debug port (e.g., 5005) when debug jvm is used. Review the task definitions and see if a shared property or argument can be set. There is an assignee on the issue, so coordinate with them to avoid duplication of effort.