pan3793 opened a new issue, #6534: URL: https://github.com/apache/kyuubi/issues/6534
### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) ### Search before asking - [X] I have searched in the [issues](https://github.com/apache/kyuubi/issues?q=is%3Aissue) and found no similar issues. ### Describe the bug NPE occurs on launching Spark engine. ### Affects Version(s) master/branch-1.9 ### Kyuubi Server Log Output ```logtalk java.lang.NullPointerException: Cannot invoke "org.apache.kyuubi.client.KyuubiSyncThriftClient.remoteEngineBroken()" because the return value of "org.apache.kyuubi.session.KyuubiSessionImpl.client()" is null at org.apache.kyuubi.session.KyuubiSessionImpl.checkEngineConnectionAlive(KyuubiSessionImpl.scala:321) at org.apache.kyuubi.session.KyuubiSessionManager.$anonfun$startEngineAliveChecker$2(KyuubiSessionManager.scala:421) at org.apache.kyuubi.session.KyuubiSessionManager.$anonfun$startEngineAliveChecker$2$adapted(KyuubiSessionManager.scala:418) at scala.collection.Iterator.foreach(Iterator.scala:943) at scala.collection.Iterator.foreach$(Iterator.scala:943) at scala.collection.AbstractIterator.foreach(Iterator.scala:1431) at scala.collection.IterableLike.foreach(IterableLike.scala:74) at scala.collection.IterableLike.foreach$(IterableLike.scala:73) at scala.collection.AbstractIterable.foreach(Iterable.scala:56) at org.apache.kyuubi.session.KyuubiSessionManager.$anonfun$startEngineAliveChecker$1(KyuubiSessionManager.scala:418) at org.apache.kyuubi.util.ThreadUtils$.$anonfun$scheduleTolerableRunnableWithFixedDelay$1(ThreadUtils.scala:126) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:833) ``` ### Kyuubi Engine Log Output _No response_ ### Kyuubi Server Configurations _No response_ ### Kyuubi Engine Configurations _No response_ ### Additional context _No response_ ### Are you willing to submit PR? - [ ] Yes. I would be willing to submit a PR with guidance from the Kyuubi community to fix. - [ ] No. I cannot submit a PR at this time. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@kyuubi.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: notifications-unsubscr...@kyuubi.apache.org For additional commands, e-mail: notifications-h...@kyuubi.apache.org
