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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2022/10/12 09:42:54 UTC
[GitHub] [druid] themaric opened a new issue, #13216: Warnigs in Druid node logs after upgrade Java to 11
themaric opened a new issue, #13216:
URL: https://github.com/apache/druid/issues/13216
Hi guys,
Just to let you know (probably nothing, but just in case) that I've found some warnings being logged down each time Druid nodes are started:
```
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/usr/local/apache-druid-24.0.0/lib/guice-4.1.0.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.securit
y.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
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
```
Thanks and keep up the great job!
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[GitHub] [druid] gianm commented on issue #13216: Warnigs in Druid node logs after upgrade Java to 11
Posted by GitBox <gi...@apache.org>.
gianm commented on issue #13216:
URL: https://github.com/apache/druid/issues/13216#issuecomment-1276844735
This is due to JDK encapsulation: https://druid.apache.org/docs/latest/operations/java.html#strong-encapsulation
You can avoid them, if you like, by adding the mentioned `--add-exports` and `--add-opens` to your jvm parameters. Although as mentioned, the warnings are harmless, so this isn't required. Patch #12839 adds some logic to the startup scripts to set these automatically on Java 17, where they _are_ required.
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[GitHub] [druid] gianm closed issue #13216: Warnigs in Druid node logs after upgrade Java to 11
Posted by GitBox <gi...@apache.org>.
gianm closed issue #13216: Warnigs in Druid node logs after upgrade Java to 11
URL: https://github.com/apache/druid/issues/13216
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[GitHub] [druid] gianm commented on issue #13216: Warnigs in Druid node logs after upgrade Java to 11
Posted by GitBox <gi...@apache.org>.
gianm commented on issue #13216:
URL: https://github.com/apache/druid/issues/13216#issuecomment-1276845293
Closing since this is not an issue on Java 11, and on Java 17 we set the required parameters in the startup scripts. Please let us know if you run into problems.
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[GitHub] [druid] themaric commented on issue #13216: Warnigs in Druid node logs after upgrade Java to 11
Posted by GitBox <gi...@apache.org>.
themaric commented on issue #13216:
URL: https://github.com/apache/druid/issues/13216#issuecomment-1277213575
All clear, thank you for following up.
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[GitHub] [druid] FrankChen021 commented on issue #13216: Warnigs in Druid node logs after upgrade Java to 11
Posted by GitBox <gi...@apache.org>.
FrankChen021 commented on issue #13216:
URL: https://github.com/apache/druid/issues/13216#issuecomment-1276155510
It's a known problem. See: https://github.com/apache/druid/pull/12232#issuecomment-1059917494
This won't cause any problem as I know. I don't know there is somebody working on this problem because it's a little bit tricky.
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