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https://issues.apache.org/jira/browse/IGNITE-29177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Egor Baranov reassigned IGNITE-29177:
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Assignee: Egor Baranov
> Analyze and test the reliability of MDC historical rebalance mechanism
> ----------------------------------------------------------------------
>
> Key: IGNITE-29177
> URL: https://issues.apache.org/jira/browse/IGNITE-29177
> Project: Ignite
> Issue Type: Test
> Reporter: Egor Baranov
> Assignee: Egor Baranov
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Goal
> Analyze the reliability of the historical (WAL-based) rebalance mechanism
> in a multi-data-center (MDC) setup. Verify that data is not lost or corrupted
> under various failure scenarios: node restarts, source node loss, WAL
> truncation, concurrent writes during recovery.
> Scope
> - Strategy selection (full vs historical) under all edge cases
> - Fallback behavior when historical is impossible (WAL unavailable,
> source down)
> - Protection against data corruption on full rebalance (stale source
> exclusion)
> - Message ordering guarantees for historical supply
> - Multi-restart stability (counter recovery)
> - Cross-version compatibility
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