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https://issues.apache.org/jira/browse/CASSANDRA-18756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Branimir Lambov updated CASSANDRA-18756:
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Fix Version/s: 3.11.17
4.0.12
4.1.4
5.0-alpha2
5.1
Source Control Link: https://github.com/apache/cassandra/pull/2656
Resolution: Fixed
Status: Resolved (was: Ready to Commit)
Commited
([3.11|https://github.com/apache/cassandra/commit/87c2af85c1305c130af7d66f83dec03a1c4a8bb2]
[4.0|https://github.com/apache/cassandra/commit/c6385ac3ddccabdc7cb650b090fa69c0523274e8]
[4.1|https://github.com/apache/cassandra/commit/db6641fbb6fd0c439e14f94caecdeee999311c62]
[5.0|https://github.com/apache/cassandra/commit/a23f4c0b15c684240ef0bcd55875610e8bd7179b]
[trunk|https://github.com/apache/cassandra/commit/970ec2d1db5770c13a42e1f2862ea398317d0f15])
> TimeWindowCompactionStrategy with unsafe_aggressive_sstable_expiration keeps
> overlaping SSTable references
> ----------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-18756
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18756
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Compaction
> Reporter: Branimir Lambov
> Assignee: Ethan Brown
> Priority: Normal
> Fix For: 3.11.17, 4.0.12, 4.1.4, 5.0-alpha2, 5.1
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> When {{unsafe_aggressive_sstable_expiration}} is turned on, TWCS should not
> create or maintain an iterator of overlapping sstables. However, because
> {{TimeWindowCompactionController}} inherits from {{CompactionController}} and
> only sets {{ignoreOverlaps}} after the base class has constructed the overlap
> iterator, it ends up making an overlap iterator and then never updating it.
> The end result is that such a compaction keeps references to lots of and
> likely _all_ other SSTables on the node and thus delays the deletion of
> obsolete ones by hours or even days.
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