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https://issues.apache.org/jira/browse/CASSANDRA-5745?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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C. Scott Andreas updated CASSANDRA-5745:
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Component/s: Compaction
> Minor compaction tombstone-removal deadlock
> -------------------------------------------
>
> Key: CASSANDRA-5745
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5745
> Project: Cassandra
> Issue Type: Improvement
> Components: Compaction
> Reporter: Jonathan Ellis
> Priority: Minor
> Fix For: 4.x
>
>
> From a discussion with Axel Liljencrantz,
> If you have two SSTables that have temporally overlapping data, you can get
> lodged into a state where a compaction of SSTable A can't drop tombstones
> because SSTable B contains older data *and vice versa*. Once that's happened,
> Cassandra should be wedged into a state where CASSANDRA-4671 no longer helps
> with tombstone removal. The only way to break the wedge would be to perform a
> compaction containing both SSTable A and SSTable B.
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