[GitHub] [dolphinscheduler] ruanwenjun commented on pull request #6446: [Improvement-6445][Standalone] Run h2 in daemon mode

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ruanwenjun commented on pull request #6446:
URL: https://github.com/apache/dolphinscheduler/pull/6446#issuecomment-933323897


   @kezhenxu94 
   When the creation is failed, it will throw an exception in line 58, but the application still running, I find there is a h2 thread is still running.
   ```java
   "H2 TCP Server (tcp://localhost:61958)@2086" prio=5 tid=0x10 nid=NA runnable
     java.lang.Thread.State: RUNNABLE
   	  at java.net.PlainSocketImpl.socketAccept(PlainSocketImpl.java:-1)
   	  at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
   	  at java.net.ServerSocket.implAccept(ServerSocket.java:560)
   	  at java.net.ServerSocket.accept(ServerSocket.java:528)
   	  at org.h2.server.TcpServer.listen(TcpServer.java:263)
   	  at org.h2.tools.Server.run(Server.java:610)
   	  at java.lang.Thread.run(Thread.java:748)
   ```
   
   https://github.com/apache/dolphinscheduler/blob/4fbee7dc4b178b13c4a795fa848a86ec94c5cd27/dolphinscheduler-standalone-server/src/main/java/org/apache/dolphinscheduler/server/StandaloneServer.java#L53-L71
   


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