lightning-L commented on issue #4876:
URL: https://github.com/apache/kyuubi/issues/4876#issuecomment-1576063545

   
   
   
   > > for this test case (BackendServiceMetricSuite), it is opening 
KyuubiSession, not SparkSession.
   > 
   > When KyuubiSession is first opened and if Spark Engine is being used, it 
will have to wait for the Spark Engine to be launched. In the 
BackendServiceMetricSuite, the Spark Engine is used and the session is only 
opened once, so it will wait for the Spark Engine to be launched.
   > 
   > see
   > 
   > 
https://github.com/apache/kyuubi/blob/02b1a7d44f03a1ea7c2eaef5be463d622b85c004/kyuubi-server/src/main/scala/org/apache/kyuubi/session/KyuubiSessionImpl.scala#L116
   > 
   > 
   > 
https://github.com/apache/kyuubi/blob/02b1a7d44f03a1ea7c2eaef5be463d622b85c004/kyuubi-server/src/main/scala/org/apache/kyuubi/session/KyuubiSessionImpl.scala#L201
   
   yes, you are right.
   Let me dig deeper..


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