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https://issues.apache.org/jira/browse/IGNITE-8167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16453742#comment-16453742
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Dmitriy Govorukhin commented on IGNITE-8167:
--------------------------------------------

[~pavel.sapezhko]
The "restoreMemory" is binary recovery, it applies binary pageSnapshot and 
pageDelta records. It means if you have corrupted WAL between last success and 
next failed checkpoint you can't restore binary consistent. It is not "apply 
logical records" parts, a logical update will be applied in "restoreState".

> Recovery after crash sometimes leads to starting from beginning absolute wal 
> segment index
> ------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-8167
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8167
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.4
>         Environment: Doesn't meter. We saw these behavior in k8s deployment 
> as in local deployment too. Using any of WAL_MOD.
>            Reporter: Pavel Sapezhko
>            Assignee: Pavel Sapezhko
>            Priority: Major
>             Fix For: 2.5
>
>         Attachments: ignite_precrash.log
>
>
> When we are trying to restore after crash using wal log, sometimes we can 
> find corrupted wal messages which can leads to starting from beginning 
> absolute wal index. So, we will have broken wal archiver thread due to 
> assertation error(but we still having working Ignite instance. I think we 
> need to discuss if we are really want it) and as a result on next restart we 
> can see "Wal history is too short" message.



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