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https://issues.apache.org/jira/browse/CASSANDRA-21074?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Stefan Miklosovic reassigned CASSANDRA-21074:
---------------------------------------------
Assignee: Stefan Miklosovic
> Change the eager reference counting of the dictionary to lazy reference
> counting
> --------------------------------------------------------------------------------
>
> Key: CASSANDRA-21074
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21074
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Feature/Compression
> Reporter: Dmitry Konstantinov
> Assignee: Stefan Miklosovic
> Priority: Normal
> Fix For: 5.x
>
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> [https://ci-cassandra.apache.org/job/Cassandra-trunk/2353/testReport/junit/org.apache.cas[…]stExportImportListCompressionDictionary_cdc_jdk11_x86_64/|https://ci-cassandra.apache.org/job/Cassandra-trunk/2353/testReport/junit/org.apache.cassandra.tools.nodetool/ExportImportListCompressionDictionaryTest/Tests___test_cdc_jdk11_11_20___testExportImportListCompressionDictionary_cdc_jdk11_x86_64/]
> There is also a suspicious leak report in the test logs:
> {code:java}
> ERROR [Reference-Reaper] 2025-12-12T20:31:35,396 Ref.java:250 - LEAK
> DETECTED: a reference (class
> org.apache.cassandra.db.compression.ZstdCompressionDictionary$Tidy@1218524978:ZstdCompressionDictionary)
> to class
> org.apache.cassandra.db.compression.ZstdCompressionDictionary$Tidy@1218524978:ZstdCompressionDictionary
> was not released before the reference was garbage collected ERROR
> [Reference-Reaper] 2025-12-12T20:31:35,397 Ref.java:290 - Allocate trace
> class
> org.apache.cassandra.db.compression.ZstdCompressionDictionary$Tidy@1218524978:ZstdCompressionDictionary:
> Thread[RMI TCP Connection(52)-127.0.0.1,5,RMI Runtime] at
> java.base/java.lang.Thread.getStackTrace(Thread.java:1602) at
> org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280) at
> org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201) at
> org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118) at
> org.apache.cassandra.db.compression.ZstdCompressionDictionary.<init>(ZstdCompressionDictionary.java:61)
> at
> org.apache.cassandra.db.compression.CompressionDictionary$Kind$1.createDictionary(CompressionDictionary.java:309)
> at
> org.apache.cassandra.db.compression.CompressionDictionary.createFromRow(CompressionDictionary.java:282)
> at
> org.apache.cassandra.schema.SystemDistributedKeyspace.retrieveLatestCompressionDictionary(SystemDistributedKeyspace.java:452)
> at
> org.apache.cassandra.db.compression.CompressionDictionaryManager.getCompressionDictionary(CompressionDictionaryManager.java:282)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method) at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:566) at
> sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71) at
> jdk.internal.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:566) at
> java.base/sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:260) at
> java.management/com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:112)
> at
> java.management/com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:46)
> at
> java.management/com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
> at
> java.management/com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:83)
> at
> java.management/com.sun.jmx.mbeanserver.MBeanSupport.getAttribute(MBeanSupport.java:206)
> at
> java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:641)
> at
> java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678)
> at java.base/jdk.internal.reflect.GeneratedMethodAccessor12.invoke(Unknown
> Source) at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:566) at
> org.apache.cassandra.audit.AuditLogManager$JmxHandler.invoke(AuditLogManager.java:502)
> at com.sun.proxy.$Proxy28.getAttribute(Unknown Source) at
> java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1443)
> at
> java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1307)
> at
> java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1399)
> at
> java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.getAttribute(RMIConnectionImpl.java:637)
> at java.base/jdk.internal.reflect.GeneratedMethodAccessor11.invoke(Unknown
> Source) at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:566) at
> java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
> at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200) at
> java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197) at
> java.base/java.security.AccessController.doPrivileged(Native Method) at
> java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196) at
> java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
> at
> java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
> at
> java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
> at java.base/java.security.AccessController.doPrivileged(Native Method) at
> java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> at java.base/java.lang.Thread.run(Thread.java:829)
> {code:java}
> {code}
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