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https://issues.apache.org/jira/browse/KAFKA-1379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15832155#comment-15832155
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Andrew Olson commented on KAFKA-1379:
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[~jjkoshy] / [~becket_qin] should this Jira now be closed as a duplicate of
KAFKA-3163?
https://cwiki.apache.org/confluence/display/KAFKA/KIP-33+-+Add+a+time+based+log+index#KIP-33-Addatimebasedlogindex-Enforcetimebasedlogretention
> Partition reassignment resets clock for time-based retention
> ------------------------------------------------------------
>
> Key: KAFKA-1379
> URL: https://issues.apache.org/jira/browse/KAFKA-1379
> Project: Kafka
> Issue Type: Bug
> Reporter: Joel Koshy
>
> Since retention is driven off mod-times reassigned partitions will result in
> data that has been on a leader to be retained for another full retention
> cycle. E.g., if retention is seven days and you reassign partitions on the
> sixth day then those partitions will remain on the replicas for another
> seven days.
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