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https://issues.apache.org/jira/browse/IGNITE-12638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17038202#comment-17038202
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Maxim Muzafarov commented on IGNITE-12638:
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[~agura], [~ibessonov]
Thank you, I'll cherry-pick the issue today to 2.8
> Classes persisted by DistributedMetaStorage are not IgniteDTO
> -------------------------------------------------------------
>
> Key: IGNITE-12638
> URL: https://issues.apache.org/jira/browse/IGNITE-12638
> Project: Ignite
> Issue Type: Bug
> Reporter: Ivan Bessonov
> Assignee: Ivan Bessonov
> Priority: Major
> Fix For: 2.8
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> This has to be fixed to simplify future modification of component.
> DistributedMetaStorageHistoryItem and DistributedMetaStorageVersion will be
> persisted on disc so we need to have a reliable way to read them even when
> classes will be updated in the future. IgniteDataTransferObject is the
> standard option for such cases - it allows versioning of serialization format.
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