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https://issues.apache.org/jira/browse/CASSANDRA-21130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18054481#comment-18054481
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David Capwell commented on CASSANDRA-21130:
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Starting commit
CI Results (pending):
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|trunk|[branch|https://github.com/dcapwell/cassandra/tree/commit_remote_branch/CASSANDRA-21130-trunk-1A33186A-3BED-4226-BD7D-A95DFCB58BDC]|[build|unknown]|[build|unknown]|
> Fix flakey tests due to tests updating SSTable format dynamically
> -----------------------------------------------------------------
>
> Key: CASSANDRA-21130
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21130
> Project: Apache Cassandra
> Issue Type: Bug
> Components: CI
> Reporter: David Capwell
> Assignee: David Capwell
> Priority: Normal
> Fix For: NA
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> There are several tests that set the SSTable format for the test, but this is
> a global field and a background compaction can read the format and make
> different decisions; leading to flakey failures.
> The motivating issue is that the new compaction cursor logic checks that the
> format is BIG and then enables, else it falls back to previous logic. When
> the test changes to BTI this can cause a race with compaction leading to type
> cast issues.
> Switching the format at runtime is currently not supported and something done
> specifically by tests, so need to make sure tests do it in a safe way to make
> CI stable.
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