ddebowczyk92 commented on code in PR #38961:
URL: https://github.com/apache/beam/pull/38961#discussion_r3427661307
##########
examples/java/common.gradle:
##########
@@ -35,6 +35,16 @@ configurations.sparkRunnerPreCommit {
exclude group: "org.slf4j", module: "jul-to-slf4j"
exclude group: "org.slf4j", module: "slf4j-jdk14"
}
+configurations.flinkRunnerPreCommit {
Review Comment:
The problem is that Flink 2.1+ comes with `at.yawk.lz4:lz4-java` instead of
`org.lz4:lz4-java`. This becomes an issue in modules where both libraries are
present; this change simply favors the former.
```
> Could not resolve org.lz4:lz4-java:1.8.0.
> Module 'org.lz4:lz4-java' has been rejected:
Cannot select module with conflict on capability
'org.lz4:lz4-java:1.8.0' also provided by
[at.yawk.lz4:lz4-java:1.10.3(runtimeElements)]
> Could not resolve at.yawk.lz4:lz4-java:1.10.3.
> Module 'at.yawk.lz4:lz4-java' has been rejected:
Cannot select module with conflict on capability
'org.lz4:lz4-java:1.10.3' also provided by [org.lz4:lz4-java:1.8.0(runtime)]
```
In the case of this specific module, the conflict arises because of the
`kafka-clients `dependency, which brings in the old version of `org.lz4`.
The parents of the clashing dependencies can be checked via this command:
`./gradlew :examples:java:dependencies --configuration flinkRunnerPreCommit
| grep -B2 "org.lz4:lz4-java:1.6.0"`
I made these changes to pass the ` ./gradlew :javaPreCommit` CICD check
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