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https://issues.apache.org/jira/browse/CASSANDRA-6503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887636#comment-13887636
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Marcus Eriksson commented on CASSANDRA-6503:
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[~yukim] i committed the followup patch to 2.0, revert if that was a bad idea :)
> sstables from stalled repair sessions become live after a reboot and can
> resurrect deleted data
> -----------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-6503
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6503
> Project: Cassandra
> Issue Type: Bug
> Reporter: Jeremiah Jordan
> Assignee: Jason Brown
> Priority: Minor
> Fix For: 1.2.14, 2.0.5
>
> Attachments: 6503-2.0-followup.txt, 6503_2.0-v2.diff,
> 6503_2.0-v3.diff, 6503_c1.2-v1.patch
>
>
> The sstables streamed in during a repair session don't become active until
> the session finishes. If something causes the repair session to hang for
> some reason, those sstables will hang around until the next reboot, and
> become active then. If you don't reboot for 3 months, this can cause data to
> resurrect, as GC grace has expired, so tombstones for the data in those
> sstables may have already been collected.
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