How to set kerberos when connect to hdfs in Iceberg connector Hadoop catalog

[FounderHy]

• Connector: Iceberg etc/catalog/iceberg.properties

hive.metastore.uri=xxx
connector.name=iceberg
iceberg.catalog.type=hadoop
iceberg.catalog.warehouse=xxx
iceberg.hadoop.config.resources=xxx/hadoop/core-site.xml,xxx/hadoop/hdfs-site.xml
hive.hdfs.authentication.type=KERBEROS
hive.hdfs.presto.principal=xxx
hive.hdfs.impersonation.enabled=true
hive.hdfs.presto.keytab=xxx/hadoop/hdfs.keytab

when use jdbc to connect presto and query, the server has error:

[Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)];

[prestored]

@FounderHy Could you add the full stack trace ? Also are you able to connect to Hive(without Iceberg) with same kerberos mechanism?

[s-akhtar-baig]

@FounderHy, can you try validating the credentials by runningklist on the keytab?