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https://issues.apache.org/jira/browse/KAFKA-4907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15927399#comment-15927399
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Ismael Juma commented on KAFKA-4907:
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I think Jun is suggesting that defaulting to `retention.ms` only makes sense if
retention by time is enabled. For compacted topics without `cleanup.policy` of
`delete`, retention is basically disabled. So, in that case, the default should
be infinite as it was before. Not sure what is the best way to achieve this
though.
> compacted topic shouldn't reject messages with old timestamp
> ------------------------------------------------------------
>
> Key: KAFKA-4907
> URL: https://issues.apache.org/jira/browse/KAFKA-4907
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.10.1.0
> Reporter: Jun Rao
>
> In LogValidator.validateTimestamp(), we check the validity of the timestamp
> in the message without checking whether the topic is compacted or not. This
> can cause messages to a compacted topic to be rejected when it shouldn't.
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