Server crash starting spark background profiler
Nobody has claimed this yet.
- Dominant language
- Java
- Stars
- 12.7k
- Forks
- 3.5k
- Avg merge
- 3d 13h
- Merged PRs (30d)
- 11
Description
Stack trace
Plugin and Datapack List
pl
[18:52:24 INFO]: ℹ Server Plugins (2):
[18:52:24 INFO]: Paper Plugins:
[18:52:24 INFO]: - ServiceIO, Worlds
datapack list
[18:52:38 INFO]: There are 3 data pack(s) enabled: [vanilla (built-in)], [paper (built-in)], [file/bukkit (world)]
[18:52:38 INFO]: There are no more data packs available
Actions to reproduce (if known)
Start paper 26.1.2 using java 26
Paper version
This server is running Paper version 26.1.2-60-main@b4682bf (2026-05-04T06:25:04Z) (Implementing API version 26.1.2.build.60-stable)
You are running the latest version
Previous version: 26.1.2-53-39a1aa5 (MC: 26.1.2)
Other
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked Stack trace and reproduce Paper 26.1.2 on Java 26 while starting the server with the listed plugins and datapacks. Trace the spark background profiler startup path implicated by the crash; done means the same server starts without crashing under those conditions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, spark
- Domain
- backend, observability-sre
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100