Ranger service errors
Cloudera Storage Optimizer relies on Ranger audit files being streamed to the Ozone HDFS location for access pattern analysis.
Potential issues:
- Ranger service is down or unavailable.
- Audit file streaming is interrupted due to external issues.
- Network connectivity problems between Ranger and Ozone.
Error reporting:
- If audit files are not available at the expected Ozone HDFS location, Cloudera Storage Optimizer will detect the issue during workflow execution.
- Error messages will be updated at the appropriate task steps of the workflow run.
- These errors will be visible to users through the Storage Optimizer UI workflow status
Recommendation: Ensure all required services such as Ranger, Hive-on-Tez, and YARN are running and healthy before initiating Cloudera Storage Optimizer workflows. Monitor service health through Cloudera Manager and check Cloudera Storage Optimizer UI for any workflow errors.
