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https://issues.apache.org/jira/browse/KAFKA-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manikumar Reddy reassigned KAFKA-1581:
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Assignee: Manikumar Reddy
> Log cleaner should have an option to ignore messages without keys
> -----------------------------------------------------------------
>
> Key: KAFKA-1581
> URL: https://issues.apache.org/jira/browse/KAFKA-1581
> Project: Kafka
> Issue Type: Bug
> Reporter: Joel Koshy
> Assignee: Manikumar Reddy
>
> Right now, there is a strict requirement that compacted topics contain only
> messages with keys. This makes sense, but the issue with a hard requirement
> is that if it fails the cleaner quits. We should probably allow ignoring
> these messages (with a warning). Alternatively, we can catch this scenario
> (instead of the hard requirement) and just skip compaction for that partition.
> This came up because I saw an invalid message (compressed and without a key)
> in the offsets topic which broke both log compaction and the offset load
> process. I filed KAFKA-1580 to prevent that from happening in the first place
> but KAFKA-1580 is only for internal topics. In the general case (compacted
> non-internal topics) we would not want the cleaners to exit permanently due
> to an invalid (key-less) message in one of the partitions since that would
> prevent compaction for other partitions as well.
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