Known Issues in Cloudera Manager 7.9.0

Known issues in Cloudera Manager 7.9.0

OPSAPS-67152: Cloudera Manager does not allow you to update some configuration parameters.

Cloudera Manager does not allow you to set to "0" for the dfs_access_time_precision and dfs_namenode_accesstime_precision configuration parameters.

You will not be able to update dfs_access_time_precision and dfs_namenode_accesstime_precision to "0". If you try to enter "0" in these configuration input fields, then the field gets cleared off and results in a validation error: This field is required.

To fix this issue, perform the workaround steps as mentioned in the KB article.

If you need any guidance during this process, contact Cloudera support.

Cloudera bug: OPSAPS-59764: Memory leak in the Cloudera Manager agent while downloading the parcels.

When using the M2Crpyto library in the Cloudera Manager agent to download parcels causes a memory leak.

The Cloudera Manager server requires parcels to install a cluster. If any of the URLs of parcels are modified, then the server provides information to all the Cloudera Manager agent processes that are installed on each cluster host.

The Cloudera Manager agent then starts checking for updates regularly by downloading the manifest file that is available under each of the URLs. However, if the URL is invalid or not reachable to download the parcel, then the Cloudera Manager agent shows a 404 error message and the memory of the Cloudera Manager agent process increases due to a memory leak in the file downloader code of the agent.

To prevent this memory leak, ensure all URLs of parcels in Cloudera Manager are reachable. To achieve this, delete all unused and unreachable parcels from the Cloudera Manager parcels page.

Cloudera bug: OPSAPS-65003: Cloudera Manager cluster availability health test reports false alerts

Cloudera Manager server causes false alerts from the Cloudera Manager cluster availability health test during replacement of the Cloudera Manager server such as an operating system rolling upgrade with VM replacement upgrade. Cloudera Manager cluster availability health test is now disabled by default to avoid false alerts.

Cloudera bug: OPSAPS-66539: When Ranger Hdfs plugin is enabled in compute cluster from Cloudera Manager, the ranger plugin required system resources like solr and hdfs spool directories path and policy cache directory path are not created.

User must login to the the node where Namenode roles are running and create the system resource specified in below parameters manually. ranger_audit_hdfs_spool_dir

ranger_audit_solr_spool_dir

ranger_policy_cache_dir