Hi, It seems that test logging is broken in many modules (like core, flink) because slf4j-api was upgraded to 2.x while slf4j-simple provider is still on 1.7. I created a PR that upgraded slf4j-simple testImplementation to 2.x for all subprojects.
https://github.com/apache/iceberg/pull/11001 That fixed the test logging problem (e.g. TestInMemoryCatalog). You can find more details in the PR description. Test logging seems to have been broken for a while (from 1.4). But those dep problems have been for *test runtime only*. Recent change [1] on Avro 1.12.0 introduced slf4j-api 2.x change for runtime, as verified by the cmd below on the *main branch*. ./gradlew -q :iceberg-core:dependencyInsight --dependency slf4j-api --configuration runtimeClasspath This thread is to raise awareness on the slf4j-api dep change to 2.x as downstream projects/applications can be affected. Looking forward to feedback on the path forward. 1. continue the current upgrade path and document the slf4j-api 2.x change in the next 1.7 release. But we need to be cautious of not porting the Avro 1.12.0 / slf4j-api 2.x change to the 1.6 branch. 2. exclude slf4j-api transitive deps from Avro and other test deps so that Iceberg stays on slf4j 1.7. If that is the direction to go, we won't need PR #11001. Thanks, Steven [1] https://github.com/apache/iceberg/pull/10879
