Check for type pollution - can have a major performance impact
Open
- Dominant language
- Scala
- Stars
- 1.6k
- Forks
- 211
- Avg merge
- 1d 6h
- Merged PRs (30d)
- 89
Description
Check for type pollution - can have a major performance impact. Basically, Java Runtime up to v23 has an issue in a secondary cache used internally to track results of instanceof checks.
https://bugs.openjdk.org/browse/JDK-8180450
https://github.com/FasterXML/jackson-databind/pull/4848
See the micronaut utility mentioned in the issue description.
It may also be useful to check pekko-http.
Contributor guide
Research direction
Start by reading JDK-8180450 and Jackson PR 4848, then review the Micronaut utility referenced in the issue and check Pekko HTTP as suggested. Identify Pekko code paths affected by instanceof type pollution and define how performance impact would be measured; the issue does not name files or tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, scala
- Domain
- distributed-systems, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100