KAFKA-19286: Fix flaky testConcurrentRemoveReadForCache1

[UladzislauBlok]

Fix for flaky testConcurrentRemoveReadForCache1

Short description of root cause:

Before scheduler starts clean up, he's triggering read thread. If it's happening before RemoteIndexCache#remove does remove entity from cache, reader thread will successfully read entity, and won't trigger fetching from remote log

Full analysis:

https://issues.apache.org/jira/browse/KAFKA-19286

Evidence:

Run entire test class and annotate testConcurrentRemoveReadForCache1 as RepeatedTest to run 100_000 times

Result:

./gradlew storage:test --tests org.apache.kafka.storage.internals.log.RemoteIndexCacheTest
...
BUILD SUCCESSFUL in 48m 11s

[parthikjadav]

Hi everyone! 👋

I’ve proposed a new feature that could really improve the project, and I’d love some help bringing it to life.
If anyone is interested in contributing, here’s the issue with full details:

👉 parthikjadav/atron-js#1 (comment)

Your input, ideas, or PRs would be super appreciated!
Thanks in advance to anyone who wants to collaborate. 🚀