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Posted to jira@kafka.apache.org by "Jason Gustafson (JIRA)" <ji...@apache.org> on 2018/05/04 15:34:00 UTC
[jira] [Resolved] (KAFKA-6857) LeaderEpochFileCache.endOffsetFor()
should check for UNDEFINED_EPOCH explicitly
[ https://issues.apache.org/jira/browse/KAFKA-6857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Gustafson resolved KAFKA-6857.
------------------------------------
Resolution: Fixed
Fix Version/s: 1.1.1
1.0.2
2.0.0
> LeaderEpochFileCache.endOffsetFor() should check for UNDEFINED_EPOCH explicitly
> -------------------------------------------------------------------------------
>
> Key: KAFKA-6857
> URL: https://issues.apache.org/jira/browse/KAFKA-6857
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.11.0.0
> Reporter: Jun Rao
> Assignee: Anna Povzner
> Priority: Major
> Fix For: 2.0.0, 1.0.2, 1.1.1
>
>
> In LeaderEpochFileCache.endOffsetFor() , we have the following code.
>
>
> {code:java}
> if (requestedEpoch == latestEpoch) {
> leo().messageOffset
> {code}
>
> In the case when the requestedEpoch is UNDEFINED_EPOCH and latestEpoch is also UNDEFINED_EPOCH, we return leo. This will cause the follower to truncate to a wrong offset. If requestedEpoch is UNDEFINED_EPOCH, we need to request UNDEFINED_EPOCH_OFFSET.
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