[ 
https://issues.apache.org/jira/browse/CASSANDRA-19567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Caleb Rackliffe updated CASSANDRA-19567:
----------------------------------------
    Reviewers: Caleb Rackliffe, Caleb Rackliffe  (was: Caleb Rackliffe)
               Caleb Rackliffe, Caleb Rackliffe  (was: Caleb Rackliffe)
       Status: Review In Progress  (was: Patch Available)

> Minimize the heap consumption when registering metrics
> ------------------------------------------------------
>
>                 Key: CASSANDRA-19567
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-19567
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Observability/Metrics
>            Reporter: Maxim Muzafarov
>            Assignee: Maxim Muzafarov
>            Priority: Normal
>             Fix For: 5.x
>
>         Attachments: summary.png
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> The problem is only reproducible on the x86 machine, the problem is not 
> reproducible on the arm64. A quick analysis showed a lot of MetricName 
> objects stored in the heap, although the real cause could be related to 
> something else, the MetricName object requires extra attention.
> To reproduce run the command run locally:
> {code}
> ant test-jvm-dtest-some 
> -Dtest.name=org.apache.cassandra.distributed.test.ReadRepairTest
> {code}
> The error:
> {code:java}
> [junit-timeout] Exception in thread "main" java.lang.OutOfMemoryError: Java 
> heap space
> [junit-timeout]     at 
> java.base/java.lang.StringLatin1.newString(StringLatin1.java:769)
> [junit-timeout]     at 
> java.base/java.lang.StringBuffer.toString(StringBuffer.java:716)
> [junit-timeout]     at 
> org.apache.cassandra.CassandraBriefJUnitResultFormatter.endTestSuite(CassandraBriefJUnitResultFormatter.java:191)
> [junit-timeout]     at 
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.fireEndTestSuite(JUnitTestRunner.java:854)
> [junit-timeout]     at 
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:578)
> [junit-timeout]     at 
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1197)
> [junit-timeout]     at 
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:1042)
> [junit-timeout] Testsuite: 
> org.apache.cassandra.distributed.test.ReadRepairTest-cassandra.testtag_IS_UNDEFINED
> [junit-timeout] Testsuite: 
> org.apache.cassandra.distributed.test.ReadRepairTest-cassandra.testtag_IS_UNDEFINED
>  Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0 sec
> [junit-timeout] 
> [junit-timeout] Testcase: 
> org.apache.cassandra.distributed.test.ReadRepairTest:readRepairRTRangeMovementTest-cassandra.testtag_IS_UNDEFINED:
>     Caused an ERROR
> [junit-timeout] Forked Java VM exited abnormally. Please note the time in the 
> report does not reflect the time until the VM exit.
> [junit-timeout] junit.framework.AssertionFailedError: Forked Java VM exited 
> abnormally. Please note the time in the report does not reflect the time 
> until the VM exit.
> [junit-timeout]     at 
> jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
> [junit-timeout]     at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> [junit-timeout]     at java.base/java.util.Vector.forEach(Vector.java:1365)
> [junit-timeout]     at 
> jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
> [junit-timeout]     at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> [junit-timeout]     at 
> jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
> [junit-timeout]     at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> [junit-timeout]     at java.base/java.util.Vector.forEach(Vector.java:1365)
> [junit-timeout]     at 
> jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
> [junit-timeout]     at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> [junit-timeout]     at 
> jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
> [junit-timeout]     at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> [junit-timeout] 
> [junit-timeout] 
> [junit-timeout] Test org.apache.cassandra.distributed.test.ReadRepairTest 
> FAILED (crashed)BUILD FAILED
>  {code}



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