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https://issues.apache.org/jira/browse/CASSANDRA-11479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Lerer updated CASSANDRA-11479:
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Status: Open (was: Patch Available)
> BatchlogManager unit tests failing on truncate race condition
> -------------------------------------------------------------
>
> Key: CASSANDRA-11479
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11479
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Compaction
> Reporter: Joel Knighton
> Assignee: Yuki Morishita
> Priority: Normal
> Fix For: 2.2.x, 3.0.x, 3.11.x
>
> Attachments:
> TEST-org.apache.cassandra.batchlog.BatchlogManagerTest.log
>
>
> Example on CI
> [here|http://cassci.datastax.com/job/trunk_testall/818/testReport/junit/org.apache.cassandra.batchlog/BatchlogManagerTest/testLegacyReplay_compression/].
> This seems to have only started happening relatively recently (within the
> last month or two).
> As far as I can tell, this is only showing up on BatchlogManagerTests purely
> because it is an aggressive user of truncate. The assertion is hit in the
> setUp method, so it can happen before any of the test methods. The assertion
> occurs because a compaction is happening when truncate wants to discard
> SSTables; trace level logs suggest that this compaction is submitted after
> the pause on the CompactionStrategyManager.
> This should be reproducible by running BatchlogManagerTest in a loop - it
> takes up to half an hour in my experience. A trace-level log from such a run
> is attached - grep for my added log message "SSTABLES COMPACTING WHEN
> DISCARDING" to find when the assert is hit.
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