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https://issues.apache.org/jira/browse/CASSANDRA-20710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Yeschenko updated CASSANDRA-20710:
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Reviewers: Alex Petrov
Status: Review In Progress (was: Patch Available)
> CEP-45: Ongoing truncation of reconciled portions of coordinator logs
> ---------------------------------------------------------------------
>
> Key: CASSANDRA-20710
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20710
> Project: Apache Cassandra
> Issue Type: New Feature
> Components: Local/Other
> Reporter: Aleksey Yeschenko
> Assignee: Aleksey Yeschenko
> Priority: Normal
>
> As coordinator logs get reconciled by the peers, they should be truncated to
> free up space taken up by the journal and speed up lookups.
> An equivalent of range tombstones needs to be implemented for the journal to
> encode ranges that are safe to drop. A simple supporting structure to keep
> track of per-log min and max ids needs to be implemented for efficient
> selection of segments to compact with the highest potential to free up space.
> And, lastly, a simple single-segment overwriting compaction needs to be
> implemented to implement this deletion.
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