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https://issues.apache.org/jira/browse/CASSANDRA-20599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18058243#comment-18058243
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Dmitry Konstantinov commented on CASSANDRA-20599:
-------------------------------------------------

I suspect that the test is killed by an OS OOM killer, so the question is how 
memory used by the test:
* we should have 1Gb heap size for it
* 2GiB of off-heap memory is used for the index summary
* ?

> Test failure: 
> org.apache.cassandra.io.sstable.indexsummary.IndexSummaryTest.testLargeIndexSummary
> -------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-20599
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20599
>             Project: Apache Cassandra
>          Issue Type: Bug
>          Components: Test/unit
>            Reporter: Dmitry Konstantinov
>            Assignee: Dmitry Konstantinov
>            Priority: Normal
>
> IndexSummaryTest.testLargeIndexSummary fails frequently.
> [https://ci-cassandra.apache.org/job/Cassandra-trunk/2127/testReport/junit/org.apache.cassandra.io.sstable.indexsummary/IndexSummaryTest/Tests___test_jdk17_15_16___testLargeIndexSummary_cassandra_testtag_IS_UNDEFINED/]
> {code:java}
> junit.framework.AssertionFailedError: Forked Java VM exited abnormally. 
> Please note the time in the report does not reflect the time until the VM 
> exit.
>       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.base/java.util.Vector.forEach(Vector.java:1365)
>       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.base/java.util.Vector.forEach(Vector.java:1365)
>       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at jdk.internal.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.base/java.util.Vector.forEach(Vector.java:1365)
>       at 
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at org.apache.cassandra.anttasks.TestHelper.execute(TestHelper.java:53)
>       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.base/java.util.Vector.forEach(Vector.java:1365)
>       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>       at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  {code}



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