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https://issues.apache.org/jira/browse/CASSANDRA-17298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17842726#comment-17842726
 ] 

David Capwell edited comment on CASSANDRA-17298 at 5/1/24 5:37 PM:
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This fails for me as well, but when I run locally on JDK 11 I get the following 
error

{code}
Caused by: FSReadError in 
/Users/dcapwell/src/github/apache/cassandra/4.0/build/test/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377
        at 
org.apache.cassandra.db.lifecycle.LogReplica.create(LogReplica.java:59)
...
Caused by: java.io.IOException: Invalid folder descriptor trying to create log 
replica 
/Users/dcapwell/src/github/apache/cassandra/4.0/build/test/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377
        ... 26 more
{code}

But in CI it fails differently

{code}
 java.lang.reflect.InaccessibleObjectException: Unable to make field private 
final jdk.internal.platform.CgroupV1Metrics 
jdk.internal.platform.CgroupV1MetricsImpl.metrics accessible: module java.base 
does not "opens jdk.internal.platform" to unnamed module @f79e
        at 
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:340)
        at 
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:280)
        at 
java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:176)
        at java.base/java.lang.reflect.Field.setAccessible(Field.java:170)
        at org.github.jamm.MemoryMeter.addFieldChildren(MemoryMeter.java:330)
        at org.github.jamm.MemoryMeter.measureDeep(MemoryMeter.java:269)
        at 
org.apache.cassandra.utils.ObjectSizes.measureDeep(ObjectSizes.java:216)
        at 
org.apache.cassandra.cql3.MemtableSizeTest.testSize(MemtableSizeTest.java:121)
{code}


was (Author: dcapwell):
This fails for me as well, but when I run locally on JDK 11 I get the following 
error

{code}
Caused by: FSReadError in 
/Users/dcapwell/src/github/apache/cassandra/4.0/build/test/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377
        at 
org.apache.cassandra.db.lifecycle.LogReplica.create(LogReplica.java:59)
...
Caused by: java.io.IOException: Invalid folder descriptor trying to create log 
replica 
/Users/dcapwell/src/github/apache/cassandra/4.0/build/test/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377
        ... 26 more
{code}

> Test Failure: org.apache.cassandra.cql3.MemtableSizeTest
> --------------------------------------------------------
>
>                 Key: CASSANDRA-17298
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17298
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Test/unit
>            Reporter: Josh McKenzie
>            Priority: Normal
>             Fix For: 4.0.x, 4.1.x
>
>
> [https://ci-cassandra.apache.org/job/Cassandra-4.0/313/testReport/org.apache.cassandra.cql3/MemtableSizeTest/testTruncationReleasesLogSpace_2/]
>  Failed 4 times in the last 30 runs. Flakiness: 27%, Stability: 86%
> Error Message
> Expected heap usage close to 49.930MiB, got 41.542MiB.
> {code}
> Stacktrace
> junit.framework.AssertionFailedError: Expected heap usage close to 49.930MiB, 
> got 41.542MiB.
>       at 
> org.apache.cassandra.cql3.MemtableSizeTest.testSize(MemtableSizeTest.java:130)
>       at org.apache.cassandra.Util.runCatchingAssertionError(Util.java:644)
>       at org.apache.cassandra.Util.flakyTest(Util.java:669)
>       at 
> org.apache.cassandra.cql3.MemtableSizeTest.testTruncationReleasesLogSpace(MemtableSizeTest.java:61)
>       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)
>  {code}
> *UPDATE:* It was discovered that unit tests were running with 
> memtable_allocation_type: offheap_objects when we ship C* with heap_buffers.
> So we changed that in CASSANDRA-19326, now we test with 
> memtable_allocation_type: heap_buffers. As a result, this test now fails all 
> the time on 4.0 and 4.1. 



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