A-little-bit-of-data commented on issue #6724:
URL: https://github.com/apache/kyuubi/issues/6724#issuecomment-2413161514

   > if you set `spark.submit.deployMode=cluster` by either modifying 
`spark-defaults.conf` or `kyuubi-defaults.conf`, then run a `beeline` to 
trigger a `spark-submit`, a new Pod for spark driver will be launched, then 
deleting the kyuubi pod won't terminate the spark engine
   
   I set spark.submit.deployMode=cluster through the command. It is true that 
after deleting the kyuubi pod, the spark engine will not be terminated, but the 
running SQL will fail. My understanding of HA should be that when this kyuubi 
pod hangs up, the running SQL can be transferred to another kyuubi pod so as 
not to affect the normal operation of SQL. Otherwise, how can it be called HA?
   In addition, when submitting tasks through the way of connecting to zk in 
the document, /opt/kyuubi/bin/beeline -u 
'jdbc:hive2://XXXX:2181/;kyuubi.engine.type=SPARK_SQL;serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=kyuubi'
 -n batch3 -p, the engine cannot be specified, and only the default one 
configured in kyuubi-defaults.conf can be used;
   Also, when JDBC authentication is enabled, the same user can connect through 
the kyuubi beeline client, but through dolphin The Spark and CDH Beeline 
clients under the scheduler cannot connect, and keep reporting errors:
   15:09:41.002 [main] ERROR org.apache.hive.jdbc.Utils - Unable to read 
HiveServer2 configs from ZooKeeper
   Unknown HS2 problem when communicating with Thrift server.
   Error: Could not open client transport for any of the Server URI's in 
ZooKeeper: Peer indicated failure: Error validating the login 
(state=08S01,code=0)


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