Known Issues in Cloudera Runtime 7.2.18.300

Learn about the known issues in Cloudera Runtime 7.2.18.300, the impact or changes to the functionality, and the workaround.

CDPD-77399: HBase fails to register the servlet metrics and throws ClassNotFoundException: org.apache.hadoop.metrics.MetricsServlet

The MetricsServlet class is a Hadoop 2-based metric servlet unavailable in Hadoop 3 deployments.

Workaround: Ignore this WARN log message during HBase Master and RegionServer startup.

Apache Issue: HBASE-28315

TSB 2025-797: Using Spark vectorized reads on Iceberg tables with Parquet files could result in malformed data

Due to an upstream Apache Iceberg issue, in specific situations, customers executing Spark vectorized reads on Iceberg tables with Parquet files may encounter malformed output and data incorrectness.

For the latest update on this issue see the corresponding Knowledge article: TSB 2025-797: Using Spark vectorized reads on Iceberg tables with Parquet files could result in malformed data

CDPD-28741: Atlas node start failure : PermanentLockingException: Expected value mismatch for KeyColumn

In an Atlas High Availability (HA) enabled environment, starting both Atlas hosts at the same time can result in both trying to access or modify the same graph database resulting in a race condition. One instance successfully modifies the patch vertex, while the other instance triggers a Locking Exception (Concurrent modification exception).

Start Atlas instances in sequence and not in parallel to avoid the potential race condition. If the exception is already present, restart the second Atlas instance after triggering the PermanentLockingException.

CDPD-80922: Without permission for one glossary, /glossary call throws exception

When you don't have the permission for a glossary, the /glossary call results in a exception, blocking authorization for all glossaries. The error message is the following:

{ "errorCode": "ATLAS-403-00-001", "errorMessage": "hrt_qa is not authorized to perform read entity: guid=*********-****-****-****-*******"}