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https://issues.apache.org/jira/browse/KAFKA-4546?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ray Chiang updated KAFKA-4546:
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Component/s: consumer
> a consumer could miss tombstone when leader changes during the reads
> --------------------------------------------------------------------
>
> Key: KAFKA-4546
> URL: https://issues.apache.org/jira/browse/KAFKA-4546
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 0.10.0.0, 0.10.1.0, 0.11.0.0, 1.0.0
> Reporter: Jun Rao
> Priority: Major
>
> Currently, in a compacted topic, we delay the removal of a tombstone by
> delete.retention.ms to avoid the case that a consumer reads a non-tombstone
> before the tombstone, then tombstone is removed and the consumer misses the
> tombstone.
> However, tombstones are removed independently in different replicas. Supposed
> that a tombstone is already removed in the follower, but not in the leader. A
> consumer could read a non-tombstone message on the leader, then the leader
> changes, and the consumer will miss the tombstone on the new leader since
> it's already deleted.
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