pan3793 commented on code in PR #7349:
URL: https://github.com/apache/kyuubi/pull/7349#discussion_r3020014204


##########
kyuubi-ha/src/main/scala/org/apache/kyuubi/ha/HighAvailabilityConf.scala:
##########
@@ -106,12 +106,27 @@ object HighAvailabilityConf {
       .version("1.3.2")
       .fallbackConf(KyuubiConf.SERVER_PRINCIPAL)
 
+  val HA_ZK_ENGINE_AUTH_PRINCIPAL: ConfigEntry[Option[String]] =
+    buildConf("kyuubi.ha.zookeeper.engine.auth.principal")
+      .doc("Kerberos principal name that is used for the engine's ZooKeeper 
authentication. " +
+        "It fallback to `kyuubi.ha.zookeeper.auth.principal`")
+      .version("1.12.0")
+      .fallbackConf(HighAvailabilityConf.HA_ZK_AUTH_PRINCIPAL)
+
   val HA_ZK_AUTH_KEYTAB: ConfigEntry[Option[String]] =
     buildConf("kyuubi.ha.zookeeper.auth.keytab")
       .doc("Location of the Kyuubi server's keytab that is used for ZooKeeper 
authentication.")
       .version("1.3.2")
       .fallbackConf(KyuubiConf.SERVER_KEYTAB)
 
+  val HA_ZK_ENGINE_AUTH_KEYTAB: ConfigEntry[Option[String]] =
+    buildConf("kyuubi.ha.zookeeper.engine.auth.keytab")
+      .doc("Location of the Kyuubi server's keytab that is used for " +

Review Comment:
   I think you mean "engine"?
   ```suggestion
         .doc("Location of the Kyuubi engine's keytab that is used for " +
   ```
   
   do you assume that the keytab was pre-distributed to each machine that the 
engine (e.g., spark driver) might run?



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