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https://issues.apache.org/jira/browse/CASSANDRA-18710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17774918#comment-17774918
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Brandon Williams commented on CASSANDRA-18710:
----------------------------------------------
Running with [this
patch|https://github.com/driftx/cassandra/commit/286bb5cd7c36c62e541cc79b025931215a982bc3],
I've managed to reproduce, and it indicates the culprit sstable:
bq. [junit-timeout] INFO [main] 2023-10-12 21:55:12,181
DiskSpaceMetricsTest.java:125 - smallest sstable is
/tmp/cassandra/build/test/cassandra/data/cql_test_keyspace_alt/table_01-03e61210694a11eeb4091bdb4ac3170b/nc-1-big-Data.db
at 2329 bytes
If we grep the log for that sstable:
{quote}
[junit-timeout] INFO [PerDiskMemtableFlushWriter_0:2] 2023-10-12 21:55:11,128
Flushing.java:180 - Completed flushing
/tmp/cassandra/build/test/cassandra/data/cql_test_keyspace_alt/table_01-03e61210694a11eeb4091bdb4ac3170b/nc-1-big-Data.db
(6.839KiB) for commitlog position CommitLogPosition(segmentId=1697147706890,
position=211)
[junit-timeout] DEBUG [MemtableFlushWriter:2] 2023-10-12 21:55:11,177
ColumnFamilyStore.java:1345 - Flushed to
[BigTableReader:big(path='/tmp/cassandra/build/test/cassandra/data/cql_test_keyspace_alt/table_01-03e61210694a11eeb4091bdb4ac3170b/nc-1-big-Data.db')]
(1 sstables, 11.232KiB), biggest 11.232KiB, smallest 11.232KiB
[junit-timeout] INFO [main] 2023-10-12 21:55:12,181
DiskSpaceMetricsTest.java:125 - smallest sstable is
/tmp/cassandra/build/test/cassandra/data/cql_test_keyspace_alt/table_01-03e61210694a11eeb4091bdb4ac3170b/nc-1-big-Data.db
at 2329 bytes
{quote}
It looks like SSTR.onDiskLength() and bytesOnDisk() disagree at some point,
which seems like a bug. [~blambov] can you take a look?
> Test failure:
> org.apache.cassandra.io.DiskSpaceMetricsTest.testFlushSize-.jdk17 (from
> org.apache.cassandra.io.DiskSpaceMetricsTest-.jdk17)
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-18710
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18710
> Project: Cassandra
> Issue Type: Bug
> Components: Test/unit
> Reporter: Ekaterina Dimitrova
> Assignee: Brandon Williams
> Priority: Normal
> Fix For: 5.0.x, 5.x
>
>
> Seen here:
> [https://ci-cassandra.apache.org/job/Cassandra-trunk/1644/testReport/org.apache.cassandra.io/DiskSpaceMetricsTest/testFlushSize__jdk17/]
> h3.
> {code:java}
> Error Message
> expected:<7200.0> but was:<1367.83970468544>
> Stacktrace
> junit.framework.AssertionFailedError: expected:<7200.0> but
> was:<1367.83970468544> at
> org.apache.cassandra.io.DiskSpaceMetricsTest.testFlushSize(DiskSpaceMetricsTest.java:119)
> 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)
> {code}
>
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