8f91d6998f
Extended chaos test coverage from 14 to 19 tests and created comprehensive documentation for safe shard migrations. New Chaos Tests: - cutover_chaos_network_partition_new_node: Network partition during cutover - cutover_chaos_drain_timeout_boundary: Drain timeout boundary conditions - cutover_chaos_concurrent_migrations: Multiple simultaneous migrations - cutover_chaos_partial_shard_failure: Varying failure rates per shard - cutover_chaos_coordinator_crash_recovery: Coordinator crash and restart Documentation: - docs/chaos_testing_report.md: Test coverage, findings, recommendations - docs/migration_runbook.md: Operational procedures, rollback, troubleshooting - notes/bf-4d9a.md: Task summary and completion report Key Findings: - Delta pass provides 0-loss cutover (validated across 19 tests) - AE on + delta on: 0.000% loss (recommended) - AE off + delta on: 0.000% loss (safe but no defense-in-depth) - AE off + delta skipped: ~2% loss (blocked by coordinator) All success criteria met: ✅ Cutover boundary chaos tests pass with anti-entropy enabled ✅ Data loss windows without anti-entropy documented and bounded ✅ Release notes include clear guidance on anti-entropy during migrations Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> |
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| .. | ||
| benchmarks | ||
| dump-import | ||
| notes | ||
| plan | ||
| research | ||
| arm64-support.md | ||
| chaos_testing_report.md | ||
| migration_runbook.md | ||
| trade-offs.md | ||