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Posted to issues@ignite.apache.org by "Egor Baranov (Jira)" <ji...@apache.org> on 2026/10/20 12:32:00 UTC

[jira] [Created] (IGNITE-29177) Analyze and test the reliability of MDC historical rebalance mechanism

Egor Baranov created IGNITE-29177:
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             Summary: 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


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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