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https://issues.apache.org/jira/browse/CASSANDRA-19001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17785862#comment-17785862
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Brandon Williams commented on CASSANDRA-19001:
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bq. b) Make the JDK dependency strictly required, properly document this and
work with the official docker image maintainers to update the image to use JDK
instead.
If we "don't recommend using JRE" then this seems like the way to me, but I
will note our packages only require a JRE as well.
> Check whether the startup warnings for unknown modules represent a legit
> problem or cosmetic issue
> --------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-19001
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19001
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Other
> Reporter: Ekaterina Dimitrova
> Assignee: Ekaterina Dimitrova
> Priority: Normal
> Fix For: 4.0.x, 4.1.x, 5.0-beta, 5.0.x, 5.x
>
>
> During the 5.0 alpha 2 release
> [vote|https://lists.apache.org/thread/lt3x0obr5cpbcydf5490pj6b2q0mz5zr],
> [~paulo] raised the following concerns:
> {code:java}
> Launched a tarball-based 5.0-alpha2 container on top of
> "eclipse-temurin:17-jre-focal" and the server starts up fine, can run
> nodetool and cqlsh.
> I got these seemingly harmless JDK17 warnings during startup and when
> running nodetool (no warnings on JDK11):
> WARNING: Unknown module: jdk.attach specified to --add-exports
> WARNING: Unknown module: jdk.compiler specified to --add-exports
> WARNING: Unknown module: jdk.compiler specified to --add-opens
> WARNING: A terminally deprecated method in java.lang.System has been called
> WARNING: System::setSecurityManager has been called by
> org.apache.cassandra.security.ThreadAwareSecurityManager
> (file:/opt/cassandra/lib/apache-cassandra-5.0-alpha2-SNAPSHOT.jar)
> WARNING: Please consider reporting this to the maintainers of
> org.apache.cassandra.security.ThreadAwareSecurityManager
> WARNING: System::setSecurityManager will be removed in a future release
> Anybody knows if these warnings are legit/expected ? We can create
> follow-up tickets if needed.
> $ java --version
> openjdk 17.0.9 2023-10-17
> OpenJDK Runtime Environment Temurin-17.0.9+9 (build 17.0.9+9)
> OpenJDK 64-Bit Server VM Temurin-17.0.9+9 (build 17.0.9+9, mixed mode,
> sharing)
> {code}
> {code:java}
> Clarification: - When running nodetool only the "Unknown module" warnings
> show up. All warnings show up during startup.{code}
> We need to verify whether this presents a real problem in the features where
> those modules are expected to be used, or if it is a false alarm.
>
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