Kyuubi uses Kerberos authentication to obtain the principal information as the executing user

[huangjjfff]

The configuration file for kyuubi-defaults is as follows:

kyuubi.authentication: KERBEROS
kyuubi.kinit.principal: kyuubi/hostname@HADOOP.COM
kyuubi.kinit.keytab: /etc/security/keytabs/kyuubi.service.keytab
When executed by the hdp user, an error occurs during startup.

Looking into the source code, it might relate to the code running in HadoopThriftAuthBridgeServer:
private val ugi = UserGroupInformation.getCurrentUser
used as the value for the principal.

[pan3793]

You should either set up HADOOP_CONF_DIR properly, or copy your Hadoop configuration files into KYUUBI_CONF_DIR (default is KYUUBI_HOME/conf)