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From "HaiyuanZhao (Jira)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-12958) Add simulation invariant for leadership and snapshot
Date Sat, 26 Jun 2021 18:16:00 GMT

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

HaiyuanZhao updated KAFKA-12958:
--------------------------------
    Attachment: image-2021-06-27-02-15-23-760.png

> 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
>
>
> 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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