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Ekaterina Dimitrova commented on CASSANDRA-19001: ------------------------------------------------- I managed to reproduce your issue when I used JRE: {code:java} bin/nodetool sjk hh -n 10 --live 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 ERROR 14:29:47,480 Java home points to /Library/Java/JavaVirtualMachines/temurin-17.jre/Contents/Home make sure it is not a JRE path ERROR 14:29:47,481 Failed to add tools.jar to classpath java.lang.ClassNotFoundException: com.sun.tools.attach.VirtualMachine at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source) at java.base/java.lang.ClassLoader.loadClass(Unknown Source) at org.gridkit.lab.jvm.attach.AttachAPI.<clinit>(AttachAPI.java:52) at org.gridkit.lab.jvm.attach.AttachManager.<clinit>(AttachManager.java:75) at org.gridkit.lab.jvm.attach.HeapHisto.getHistoLive(HeapHisto.java:40) at org.gridkit.jvmtool.cmd.HeapHistoCmd$Histo.run(HeapHistoCmd.java:97) at org.apache.cassandra.tools.nodetool.Sjk$Wrapper.run(Sjk.java:219) at org.apache.cassandra.tools.nodetool.Sjk.execute(Sjk.java:101) at org.apache.cassandra.tools.NodeTool$NodeToolCmd.runInternal(NodeTool.java:383) at org.apache.cassandra.tools.nodetool.Sjk.runInternal(Sjk.java:88) at org.apache.cassandra.tools.NodeTool$NodeToolCmd.run(NodeTool.java:368) at org.apache.cassandra.tools.NodeTool.execute(NodeTool.java:267) at org.apache.cassandra.tools.NodeTool.main(NodeTool.java:85) java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: com/sun/tools/attach/VirtualMachine {code} I am more worried about chronicle as it might affect Audit Logging, and we depend on the library. I need to investigate further. We may be ok without that module for our usage, or chronicle has an updated release... To be investigated... > 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 > Priority: Normal > Fix For: 5.0-beta > > > 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. > -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org