Current known issues and limitations in Cloudera Observability On-Premises.
Impala does not support super user configuration for the
observability
user for Apache Ranger-enabled cluster
The observability user requires full
privileges on the Observability cluster. Required services such as Kafka, HDFS, HBase,
and Hive support super user setup by specifying the
ranger.plugin.[service].super.users property to
observability. However, this super
user setup is not supported for Impala.
Manually add a new user named
observability in Apache Ranger and assign full privileges.
For information, see Adding a user in CDP Private Cloud Base
documentation.
For information on granting user access using Apache Ranger, see Impala
Authorization in CDP Private Cloud Data Warehouse Runtime
documentation.
/cloudera-sigma-olap directory consumes
significant storage space in HDFS
The Cloudera Observability On-Premises 3.5.2 version
enables weekly execution of the purger by default. However, periodic clean-up of
/cloudera-sigma-olap is not currently included in this
purger.
Run the command to identify which specific directory
consumes the most
space.
hdfs dfs -du -h /cloudera-sigma-olap/
0 0 /cloudera-sigma-olap/auto_action_audit
2.0 G 6.0 G /cloudera-sigma-olap/cluster_events
82.1 G 246.4 G /cloudera-sigma-olap/cluster_metrics
0 0 /cloudera-sigma-olap/hive_on_mr_table
37.7 M 113.2 M /cloudera-sigma-olap/hms_partition
13.2 M 39.6 M /cloudera-sigma-olap/hms_partition_json_schema_v1
93.4 M 280.3 M /cloudera-sigma-olap/hms_table
7.8 M 23.4 M /cloudera-sigma-olap/hms_table_json_schema_v1
798.1 K 2.3 M /cloudera-sigma-olap/impala_query
52.7 M 158.1 M /cloudera-sigma-olap/pse_root
8.1 K 24.3 K /cloudera-sigma-olap/schema
0 0 /cloudera-sigma-olap/yarn_app_metrics
Consider a scenario where you want to clean up the
cluster_metrics directory.
Navigate into the folder structure to review the directories for each
date.
