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https://issues.apache.org/jira/browse/CASSANDRA-6434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14618633#comment-14618633
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Marcus Eriksson commented on CASSANDRA-6434:
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It is mostly as a safety measure, we guarantee that we keep around tombstones
until they have been (incrementally) repaired, no matter what gc_grace is set to
> Repair-aware gc grace period
> -----------------------------
>
> Key: CASSANDRA-6434
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6434
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: sankalp kohli
> Assignee: Marcus Eriksson
> Fix For: 3.0 beta 1
>
>
> Since the reason for gcgs is to ensure that we don't purge tombstones until
> every replica has been notified, it's redundant in a world where we're
> tracking repair times per sstable (and repairing frequentily), i.e., a world
> where we default to incremental repair a la CASSANDRA-5351.
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