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https://issues.apache.org/jira/browse/CASSANDRA-17298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17880532#comment-17880532
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Stefan Miklosovic commented on CASSANDRA-17298:
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[CASSANDRA-17298-5.0|https://github.com/instaclustr/cassandra/tree/CASSANDRA-17298-5.0]
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java17_pre-commit_tests
✓ j17_build 4m 27s
✓ j17_cqlsh_dtests_py311 6m 12s
✓ j17_cqlsh_dtests_py311_vnode 6m 18s
✓ j17_cqlsh_dtests_py38 6m 32s
✓ j17_cqlsh_dtests_py38_vnode 6m 7s
✓ j17_cqlshlib_cython_tests 7m 33s
✓ j17_cqlshlib_tests 6m 39s
✓ j17_dtests 32m 21s
✓ j17_dtests_latest 34m 30s
✓ j17_jvm_dtests 23m 11s
✓ j17_jvm_dtests_latest_vnode 14m 16s
✓ j17_unit_tests 14m 32s
✓ j17_unit_tests_repeat 52m 22s
✓ j17_utests_latest 16m 26s
✓ j17_utests_latest_repeat 50m 45s
✓ j17_utests_oa 14m 29s
✓ j17_utests_oa_repeat 51m 56s
✕ j17_dtests_vnode 33m 56s
bootstrap_test.TestBootstrap test_shutdown_wiped_node_cannot_join
{noformat}
[java17_pre-commit_tests|https://app.circleci.com/pipelines/github/instaclustr/cassandra/4681/workflows/c4ec1832-2e14-4ec9-baa4-17219ca2f2bd]
> 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
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Fix For: 4.0.x, 4.1.x
>
> Attachments: analyzed_objects.svg, structure_example.svg
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> [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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