yaooqinn commented on issue #1800:
URL:
https://github.com/apache/incubator-kyuubi/issues/1800#issuecomment-1016181718
have you checked the jstack to see which thread blocked termination?
BTW, we seem to have a listener to handle it
```scala
override def onApplicationEnd(event: SparkListenerApplicationEnd): Unit = {
server.getServiceState match {
case ServiceState.STOPPED =>
debug("Received ApplicationEnd Message form Spark after the engine
has stopped")
case state =>
info(s"Received ApplicationEnd Message from Spark at $state,
stopping")
server.stop()
}
}
```
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