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Posted to jira@kafka.apache.org by "HaiyuanZhao (Jira)" <ji...@apache.org> on 2021/07/25 04:26:00 UTC

[jira] [Resolved] (KAFKA-12958) Add simulation invariant for leadership and snapshot

     [ https://issues.apache.org/jira/browse/KAFKA-12958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

HaiyuanZhao resolved KAFKA-12958.
---------------------------------
    Resolution: Fixed

> Add simulation invariant for leadership and snapshot
> ----------------------------------------------------
>
>                 Key: KAFKA-12958
>                 URL: https://issues.apache.org/jira/browse/KAFKA-12958
>             Project: Kafka
>          Issue Type: Sub-task
>            Reporter: Jose Armando Garcia Sancio
>            Assignee: HaiyuanZhao
>            Priority: Major
>         Attachments: image-2021-06-27-02-09-25-296.png, image-2021-06-27-02-15-23-760.png, image-2021-06-27-02-26-48-368.png, image-2021-06-27-02-27-41-966.png
>
>
> During the simulation we should add an invariant that notified leaders are never asked to load snapshots. The state machine always sees the following sequence of callback calls:
> Leaders see:
> ...
> handleLeaderChange state machine is notify of leadership
> handleSnapshot is never called
> Non-leader see:
> ...
> handleLeaderChange state machine is notify that is not leader
> handleSnapshot is called 0 or more times



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