Solved
Atlas fails to start after upgrade CDH 7.1.9 -- 7.3.2.0 GA
Hello Cloudera Community,
We upgraded a Test cluster from Cloudera Runtime 7.1.9 to 7.3.2.0 GA (before Prod rollout) and encountered an issue where Apache Atlas fails to start after the upgrade.
Environment
- Original Runtime: 7.1.9
- Upgraded Runtime: 7.3.2.0 (GA)
- Parcel: CDH-7.3.2-1.cdh7.3.2.p0.77083870
- Cloudera Manager: 7.11.3
- OS: RHEL / Oracle Linux 8.7
- Cluster Java: OpenJDK 17 (required by 7.3.2)
- HDFS metadata upgrade: completed
After upgrade, Atlas fails with:
Unrecognized VM option 'CMSClassUnloadingEnabled' Error: Could not create the Java Virtual Machine
The generated JVM command line contains CMS GC flags: -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled.
These flags are not supported on Java ≥ 9.
Atlas in 7.3.2.0 GA is compiled with Java 17, so running Atlas on Java 8 or 11 is also not possible: UnsupportedClassVersionError (class file version 61.0).
Looks like CMS GC flags are hard‑coded in the parcel . We attempted multiple supported CM‑level overrides, including:
- Atlas Server Environment Advanced Configuration Snippet (Safety Valve)
(ATLAS_SERVER_role_env_safety_valve) - Overriding ATLAS_SERVER_OPTS with clean, Java‑17‑compatible flags
- Cleaning process directories and restarting CM agents
Although the CM configuration appears clean, the final JVM command still includes CMSClassUnloadingEnabled, and Atlas fails with the same error.
This indicates that in 7.3.2.0 GA, parcel‑defined Atlas JVM options are merged after CM overrides, and cannot be fully replaced.
Therefore, there is currently no supported fix for this issue..
Any workaround on this issue?
