Troubleshooting issues in Cloudera Data Warehouse on premises

Get help and resources for troubleshooting issues in Cloudera Data Warehouse on premises.

note

The timestamp in the filenames of the files inside a diagnostic bundle is as per the time zone configured in Cloudera Manager. However, if you directly list the files in HDFS, the timestamp in the filenames is as per UTC, but the file contents are as per the time zone configured in Cloudera Manager.

Locating Cloudera Data Warehouse on premises logs
Learn how you can access logs for Cloudera Data Warehouse on premises.
Downloading diagnostic bundles in Cloudera Data Warehouse on premises
You can download diagnostic bundles for troubleshooting a Virtual Warehouse in Cloudera Data Warehouse on premises. The diagnostic bundles contain log files for the sidecar containers that support Hive, Impala, or Trino components. These diagnostic bundles are stored on HDFS in the form of ZIP files.
Accessing and generating diagnostic bundles in Cloudera Data Warehouse on premises
Cloudera Data Warehouse collects diagnostic data on workload logs, such as Impala Coordinator, Statefulset, CatalogD logs and stores it in the tmp directory on HDFS. You can download the logs using the Data Explorer File Browser from the base cluster.
JVM crash and heap dump collection in Virtual Warehouses
Cloudera Data Warehouse automatically captures Java Virtual Machine (JVM) crash dumps and Out-of-Memory (OOM) heap dumps from Hive, Impala, and Trino Virtual Warehouse pods and includes them in diagnostic bundles for faster troubleshooting.
Impala queries fail
Debugging Impala Virtual Warehouses
You can use the Catalog Web UI, Coordinator Web UI, and the StateStore Web UI to debug Impala Virtual Warehouses in Cloudera Data Warehouse.
Resolving Kerberos authentication failure
Deactivating environments
The Force Delete option offers a convenient way to handle environments stuck in a deleting state, enabling you to remove them directly from the Cloudera Data Warehouse user interface.
Migrating stored Hive queries after Unified Analytics removal
Migrate or delete stored Hive queries in Cloudera Data Warehouse on premises 1.5.5 Service Pack 3 and higher releases following the removal of Unified Analytics.
Cloudera Data Warehouse fails to start after NameNode migration
When you perform an HDFS NameNode migration in Cloudera Base on premises, you may encounter issues with your Cloudera Data Warehouse instance for which you are required to deactivate and reactivate the Cloudera Base on premises environment, and then recreate your Hive and Impala Virtual Warehouses. Learn how you can mitigate these issues without having to deactivate your environment.