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https://issues.apache.org/jira/browse/KAFKA-5075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jiangjie Qin updated KAFKA-5075:
--------------------------------
    Affects Version/s: 0.10.2.0
        Fix Version/s: 0.10.2.1
          Component/s: consumer
                       clients

> The position in the consumers may be advanced incorrectly when some exception 
> is thrown from consumer.poll()
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5075
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5075
>             Project: Kafka
>          Issue Type: Bug
>          Components: clients, consumer
>    Affects Versions: 0.10.2.0
>            Reporter: Jiangjie Qin
>             Fix For: 0.10.2.1
>
>
> In Fetcher.fetchRecords() we iterate over the partition data to collect the 
> ConsumerRecords, after we collect some consumer records from a partition, we 
> advance the position of that partition then move on to the next partition. If 
> the next partition throws exceptions (e.g. OffsetOutOfRangeException), the 
> messages that have already been read out of the buffer will not be delivered 
> to the users. Since the positions of the previous partitions have been be 
> updated, those messages will not be consumed again either.



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