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

Topic		Replies	Views
Problem with Graylog "SLF4J: Failed to load class " Graylog Central (peer support)	8	3562	February 8, 2021
Graylog starts but browser shows apache default page Graylog Central (peer support)	12	2562	May 21, 2020
GrayLog installation on linux Redhat 5.11 Graylog Central (peer support)	4	478	June 11, 2019
Unhelpful error on web UI, logs don't seem to show any issues Graylog Central (peer support)	2	733	February 1, 2021
Java version issue? Graylog Central (peer support)	5	1302	June 28, 2023

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

Related Topics