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https://issues.apache.org/jira/browse/IGNITE-13265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17183100#comment-17183100
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Alexey Scherbakov commented on IGNITE-13265:
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[~v.pyatkov]
I've left several comments in PR.
Additionaly,
1. What gurantees us (_cntr - margin_) location in a reserved segment ?
2. Why don't we use CheckpointHistory#earliestCp to decide if a search for a
minPtr is more effcient from the start of a history ?
> Historical iterator for atomic group should transfer few more rows than
> required
> --------------------------------------------------------------------------------
>
> Key: IGNITE-13265
> URL: https://issues.apache.org/jira/browse/IGNITE-13265
> Project: Ignite
> Issue Type: Improvement
> Reporter: Vladislav Pyatkov
> Assignee: Vladislav Pyatkov
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> On a historical rebalance some updates move from one node to another wherein
> this update may have various order in nodes. Reordering can happen in smell
> interval, but it cannot avoid at all in current implementation atomic
> protocol.
> This mean we will reduce a probably of loosing update if we make a margin
> from initial counter for the historical iterator on atomic cache.
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