WARNING: sun.reflect.Reflection.getCallerClass is not supported

gsmith · January 11, 2022, 12:47am

Hello,

I have seen that issue here

github.com/Graylog2/graylog2-server

WARNING: An illegal reflective access operation has occurred

opened 03:06AM - 19 Jan 20 UTC

closed 01:38PM - 04 Mar 21 UTC

alias454

bug triaged java9

When using OpenJDK 11 on CentOS 7, I see warnings about illegal reflective acces…s operations that show up after startup. Output from systemctl -l status graylog-server: ``` ● graylog-server.service - Graylog server Loaded: loaded (/usr/lib/systemd/system/graylog-server.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2020-01-15 00:35:06 CST; 3 days ago Docs: http://docs.graylog.org/ Main PID: 17354 (graylog-server) CGroup: /system.slice/graylog-server.service ├─17354 /bin/sh /usr/share/graylog-server/bin/graylog-server └─17356 /usr/bin/java -Xms2g -Xmx2g -XX:NewRatio=1 -server -XX:+ResizeTLAB -XX:+CMSConcurrentMTEnabled -XX:+CMSClassUnloadingEnabled -XX:-OmitStackTraceInFastThrow -jar -Dlog4j.configurationFile=file:///etc/graylog/server/log4j2.xml -Djava.library.path=/usr/share/graylog-server/lib/sigar -Dgraylog2.installation_source=rpm /usr/share/graylog-server/graylog.jar server -f /etc/graylog/server/server.conf -np Jan 15 00:35:06 graylog systemd[1]: Started Graylog server. Jan 15 00:35:07 graylog graylog-server[17354]: WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance. Jan 15 00:35:12 graylog graylog-server[17354]: WARNING: An illegal reflective access operation has occurred Jan 15 00:35:12 graylog graylog-server[17354]: WARNING: Illegal reflective access by com.google.inject.assistedinject.FactoryProvider2$MethodHandleWrapper (file:/usr/share/graylog-server/graylog.jar) to constructor java.lang.invoke.MethodHandles$Lookup(java.lang.Class,int) Jan 15 00:35:12 graylog graylog-server[17354]: WARNING: Please consider reporting this to the maintainers of com.google.inject.assistedinject.FactoryProvider2$MethodHandleWrapper Jan 15 00:35:12 graylog graylog-server[17354]: WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations Jan 15 00:35:12 graylog graylog-server[17354]: WARNING: All illegal access operations will be denied in a future release ``` ## Context I have not done any testing on this and the service seems to startup and run. ## Your Environment Graylog server 3.1.4+1149fe1 JRE: Oracle Corporation 11.0.5 on Linux 3.10.0-1062.9.1.el7.x86_64 Deployment: rpm OS: CentOS Linux 7 (Core) (centos) Arch: amd64

github.com/Graylog2/graylog2-server

Graylog 4.2 + Java 11 = WARNING: sun.reflect.Reflection.getCallerClass is not supported.

opened 09:44AM - 15 Nov 21 UTC

closed 01:12PM - 15 Nov 21 UTC

chi-miel

bug

## Expected Behavior Unsupported classes should not be used. ## Current Beha…vior Running Graylog 4.2 with Java 11 generates following Warning ``` WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance. WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by retrofit2.Platform (file:/usr/share/graylog-server/graylog.jar) to constr> WARNING: Please consider reporting this to the maintainers of retrofit2.Platform WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release ``` ## Possible Solution ## Steps to Reproduce (for bugs) 1. Upgrade Graylog to 4.2 with Java 11 2. Start service 3. Check service status ## Context ## Your Environment * Graylog Version: 4.2 * Java Version: openjdk version "11.0.13" 2021-10-19 LTS * Operating System: CentOS Linux release 8.4.2105

https://coderedirect.com/questions/347020/is-log4j2-compatible-with-java-11

Hope that helps

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WARNING: sun.reflect.Reflection.getCallerClass is not supported

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