Using Druid and Apache Hive
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Configure Apache Hive for Druid on Kerberos

It is important to use Hive LLAP daemons if you use Druid and Hive together on a Kerberos cluster.

If Kerberos is enabled on your cluster, to query Druid datasources that are imported from Hive, you must use Hive LLAP daemons. You set the following Hive property to enable LLAP daemons.
Enable LLAP mode.
hive.llap.execution.mode=all