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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2021/12/11 00:10:14 UTC

[GitHub] [druid] clintropolis opened a new pull request #12056: set log4j2.is.webapp to false if not set so that shutdown hooks are run

clintropolis opened a new pull request #12056:
URL: https://github.com/apache/druid/pull/12056


   After updating in log4j2 in #12051, errors when shutting down services and tasks appear of the form
   
   ```
   org.apache.druid.initialization.Log4jShutterDownerModule$Log4jShutterDowner.stop()] on object[org.apache.druid.initialization.Log4jShutterDownerModule$Log4jShutterDowner@ad5cffa]
   java.lang.reflect.InvocationTargetException: null
   	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_292]
   	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_292]
   	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_292]
   	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_292]
   	at org.apache.druid.java.util.common.lifecycle.Lifecycle$AnnotationBasedHandler.stop(Lifecycle.java:465) [druid-core-0.22.1.jar:0.22.1]
   	at org.apache.druid.java.util.common.lifecycle.Lifecycle.stop(Lifecycle.java:368) [druid-core-0.22.1.jar:0.22.1]
   	at org.apache.druid.cli.CliPeon.run(CliPeon.java:323) [druid-services-0.22.1.jar:0.22.1]
   	at org.apache.druid.cli.Main.main(Main.java:113) [druid-services-0.22.1.jar:0.22.1]
   Caused by: org.apache.druid.java.util.common.ISE: Expected state [STARTED] found [INITIALIZED]
   	at org.apache.druid.common.config.Log4jShutdown.stop(Log4jShutdown.java:105) ~[druid-core-0.22.1.jar:0.22.1]
   	at org.apache.druid.initialization.Log4jShutterDownerModule$Log4jShutterDowner.stop(Log4jShutterDownerModule.java:116) ~[druid-server-0.22.1.jar:0.22.1]
   	... 8 more
   ```
   
   and shutdown hooks are not run.
   
   This is because by default `log4j2.is.webapp` is set to `true` if it detects `javax.servlet.Servlet` or `jakarta.servlet.Servlet` on the classpath, and shutdown hooks are disabled for web-apps in https://github.com/apache/logging-log4j2/commit/b59819e47c06d9e928df7e90bdb75189fd9ce306
   
   This PR makes shutdown hooks work again by automatically setting this to false if it is not explicitly set in system properties (similar to the shutdown hook properties themselves). I don't think this should have any impact on Druid since we are not technically a web app, and this setting only appears to be used by a few jmx related settings.


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[GitHub] [druid] clintropolis merged pull request #12056: set log4j2.is.webapp to false if not set so that shutdown hooks are run

Posted by GitBox <gi...@apache.org>.
clintropolis merged pull request #12056:
URL: https://github.com/apache/druid/pull/12056


   


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[GitHub] [druid] clintropolis merged pull request #12056: set log4j2.is.webapp to false if not set so that shutdown hooks are run

Posted by GitBox <gi...@apache.org>.
clintropolis merged pull request #12056:
URL: https://github.com/apache/druid/pull/12056


   


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