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https://issues.apache.org/jira/browse/CASSANDRA-17804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17579469#comment-17579469
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Paulo Motta commented on CASSANDRA-17804:
-----------------------------------------
This test makes the following assertions to ensure snapshots of dropped tables
are properly expired after a node restart when auto_snapshot_ttl=20s:
a) that a snapshot of a dropped table exists after a node restart
b) that the snapshot is gone after expiration (20s)
This test assumes that the restart will take less than auto_snapshot_ttl=20s.
If a restart takes longer than that then the snapshot is cleared as soon as the
node starts and the first assertion fails.
The trivial fix is to increase auto_snapshot_ttl=60s, in the hope that a
restart will never take longer than a minute and the first assertion will never
fail. Unfortunately this will make the test longer but a bit more deterministic.
* PR: https://github.com/apache/cassandra/pull/1789
* CI: https://ci-cassandra.apache.org/view/patches/job/Cassandra-devbranch/1871/
> AutoSnapshotTtlTest#testAutoSnapshotTTlOnDropAfterRestart fails sporadically
> on missing stdout contents
> -------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-17804
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17804
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Snapshots
> Reporter: Caleb Rackliffe
> Assignee: Paulo Motta
> Priority: Normal
> Fix For: 4.1-beta, 4.x
>
>
> See
> [https://app.circleci.com/pipelines/github/maedhroz/cassandra/487/workflows/0ad42210-2979-4c5d-a4e8-d8cedf9285a7/jobs/4686/tests#failed-test-0]
>
> My guess is that in some resource constrained environment, even the first
> {{nodeool listsnapshots}} invocation doesn’t have “dropped” in the stdout. In
> other words, we skip to the state of the world the last assertion in the test
> is checking.
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