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https://issues.apache.org/jira/browse/CASSANDRA-16881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcus Eriksson updated CASSANDRA-16881:
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Resolution: Duplicate
Status: Resolved (was: Open)
> L0 compactions never recover when thousands unleveled
> -----------------------------------------------------
>
> Key: CASSANDRA-16881
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16881
> Project: Cassandra
> Issue Type: Improvement
> Components: Local/Compaction/STCS
> Reporter: Josh McKenzie
> Assignee: Josh McKenzie
> Priority: Normal
>
> While this is somewhat mitigated by incremental repair and CASSANDRA-14388,
> we can still find ourselves in a scenario where we have thousands of small
> sstables living in L0 on STCS and get into a heavily degraded state.
> We should add a JMX flag to allow operators to flip the behaviour when doing
> STCS in L0 from picking the ‘hottest’ bucket to picking the largest one -
> this should allow us to get down to reasonable numbers of sstables in L0
> quicker in this pathological case. If this proves to work particularly well
> we could consider making this the default in a future version.
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