Berenguer Blasi created CASSANDRA-16684:
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             Summary: Flaky MemtableSizeTest
                 Key: CASSANDRA-16684
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16684
             Project: Cassandra
          Issue Type: Bug
          Components: Test/unit
            Reporter: Berenguer Blasi


Flaky 
[MemtableSizeTest|https://ci-cassandra.apache.org/job/Cassandra-4.0/50/testReport/junit/org.apache.cassandra.cql3/MemtableSizeTest/testSize_compression/]

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Error Message

Expected heap usage close to 50.085MiB, got 41.294MiB.

Stacktrace

junit.framework.AssertionFailedError: Expected heap usage close to 50.085MiB, 
got 41.294MiB.

        at 
org.apache.cassandra.cql3.MemtableSizeTest.testSize(MemtableSizeTest.java:121)
        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)

Standard Output

INFO  [main] 2021-05-18 22:08:42,837 YamlConfigurationLoader.java:93 - 
Configuration location: 
file:////home/cassandra/cassandra/build/test/cassandra.compressed.yaml
DEBUG [main] 2021-05-18 22:08:42,840 YamlConfigurationLoader.java:112 - Loading 
settings from 
file:////home/cassandra/cassandra/build/test/cassandra.compressed.yaml
DEBUG [main] 2021-05-18 22:08:42,934 InternalLoggerFactory.java:63 - Using 
SLF4J as the default logging framework
DEBUG [main] 2021-05-18 22:08:42,956 PlatformDependent0
...[truncated 86028 chars]...
hed transaction log, deleting 
/home/cassandra/cassandra/build/test/cassandra/data/system_schema/keyspaces-abac5682dea631c5b535b3d6cffd0fb6/nb_txn_flush_a3253f00-b825-11eb-b0ec-cd4f0218a6b5.log
 
DEBUG [MemtableFlushWriter:2] 2021-05-18 22:08:55,552 
ColumnFamilyStore.java:1197 - Flushed to 
[BigTableReader(path='/home/cassandra/cassandra/build/test/cassandra/data/system_schema/keyspaces-abac5682dea631c5b535b3d6cffd0fb6/nb-6-big-Data.db')]
 (1 sstables, 4.894KiB), biggest 4.894KiB, smallest 4.894KiB

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