[jira] [Resolved] (KAFKA-16209) fetchSnapshot might return null if topic is created before v2.8

["Luke Chen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-16209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luke Chen resolved KAFKA-16209.
-------------------------------
    Fix Version/s: 3.8.0
                   3.7.1
       Resolution: Fixed

> fetchSnapshot might return null if topic is created before v2.8
> ---------------------------------------------------------------
>
>                 Key: KAFKA-16209
>                 URL: https://issues.apache.org/jira/browse/KAFKA-16209
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 3.6.1
>            Reporter: Luke Chen
>            Assignee: Arpit Goyal
>            Priority: Major
>              Labels: newbie, newbie++
>             Fix For: 3.8.0, 3.7.1
>
>
> Remote log manager will fetch snapshot via ProducerStateManager [here|https://github.com/apache/kafka/blob/trunk/storage/src/main/java/org/apache/kafka/storage/internals/log/ProducerStateManager.java#L608], but the snapshot map might get nothing if the topic has no snapshot created, ex: topics before v2.8. Need to fix it to avoid NPE.
> old PR: https://github.com/apache/kafka/pull/14615/



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