zhenjiaguo commented on pull request #1468: URL: https://github.com/apache/incubator-kyuubi/pull/1468#issuecomment-982622821
> > > can you check the jstack to see which non-daemon thread prevents termination when an exception occurs? > > > > > > I use Arthas to see, Non-daemon thread is: > > ```shell > > "SessionTracker" Id=22 TIMED_WAITING on org.apache.zookeeper.server.SessionTrackerImpl@5344d655 > > at java.lang.Object.wait(Native Method) > > - waiting on org.apache.zookeeper.server.SessionTrackerImpl@5344d655 > > at org.apache.zookeeper.server.SessionTrackerImpl.run(SessionTrackerImpl.java:147) > > ``` > > > > > > > > > > > > > > > > > > > > > > > > Thread states are `TIMED_WAIT`. > > Does this issue only occur when using embedded Zookeeper？ YES, It causes by `zkServer.start()`. It has a thread still running when `KyuubiServer` initialize fail. To make sure of this, I configure external zookeeper to confirm. It can exit when `KyuubiServer` initialize fail. What do you think set embedded Zookeeper run as daemon thread, or do you have a better way to resolve it? -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
