Cannot backport the OAuth change to the branch-4.0 #5751
Description
When I backport the #5683 from master branch to branch-4.0 (PR: #5742) , I encountered this issue:
[info] compiling 35 Java sources to /home/runner/work/delta/delta/storage/target/classes ...
[error] /home/runner/work/delta/delta/storage/src/main/java/io/delta/storage/commit/uccommitcoordinator/UCTokenBasedRestClient.java:39:1: cannot access io.unitycatalog.client.auth.TokenProvider
[error] bad class file: /home/runner/.cache/coursier/v1/https/repository.mulesoft.org/nexus/content/groups/public/io/unitycatalog/unitycatalog-client/0.3.1/unitycatalog-client-0.3.1.jar(io/unitycatalog/client/auth/TokenProvider.class)
[error] class file has wrong version 55.0, should be 52.0
[error] Please remove or make sure it appears in the correct subdirectory of the classpath.
[error] io.unitycatalog.client.auth.TokenProvider
[info] Checking 3 Java sources...
[info] Checking 65 Java sources...
[info] scalastyle using config /home/runner/work/delta/delta/scalastyle-config.xml
[info] scalastyle Processed 0 file(s)
[info] scalastyle Found 0 errors
[info] scalastyle Found 0 warnings
[info] scalastyle Found 0 infos
[info] scalastyle Finished in 0 ms
[success] created output: /home/runner/work/delta/delta/kernel/kernel-defaults/target
[error] (storage / Compile / compileIncremental) javac returned non-zero exit code
[error] Total time: 111 s (01:51), completed Dec 19, 2025 10:40:42 PM
Clearing Delta Kernel artifacts from ivy2 and mvn cache
Clearing Ivy caches in: []
Traceback (most recent call last):
File "/home/runner/work/delta/delta/kernel/examples/run-kernel-examples.py", line 187, in <module>
run_cmd(["build/sbt", "kernelGroup/publishM2", "storage/publishM2"], stream_output=True)
File "/home/runner/work/delta/delta/kernel/examples/run-kernel-examples.py", line 127, in run_cmd
raise Exception("Non-zero exitcode: %s" % (exit_code))
Exception: Non-zero exitcode: 1
Error: Process completed with exit code 1.
This is because our io.unitycatalog:unitycatalog-client:0.3.1 was compiled and built on JDK 11.
Our delta-io/delta master branch is exactly using the JDK11, that's why we can succesfully build and merge in delta's master branch.
But the delta-io/delta's branch-4.0 is still using the JDK8. while if the JDK8 encounter any dependency ( io.unitycatalog:unitycatalog-client:0.3.1 ) which built on JDK11, it cannot correctly recgonize the newer version of the bytecode.
That's why it report the error.