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docs(database): define Citus validation cluster setup#372

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KurodaKayn wants to merge 1 commit into
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docs/citus-validation-cluster
Open

docs(database): define Citus validation cluster setup#372
KurodaKayn wants to merge 1 commit into
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docs/citus-validation-cluster

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Change Description

  • Defines concrete acceptance criteria for the deferred Phase 6 Citus validation cluster setup.
  • Clarifies that validation must use non-production coordinator/worker topology before real tenant migration.

Implementation Approach

  • Expands the Phase 6 checklist item with topology, colocation DDL, reference-table rehearsal, and rollback/rebuild runbook expectations.
  • Adds detailed work items for applying the reviewed Phase 5 DDL shape and documenting validation-cluster operational runbooks.

Testing

  • Passed: bash script/ci/compute-changes.sh pull_request "$(git merge-base origin/main HEAD)" "$(git rev-parse HEAD)" selected no area-specific CI jobs for this docs-only change.
  • Not run: code, service, and container CI because the branch changes only doc/plan/database-optimization.md.

Phase 6 needs clearer criteria before horizontal scaling work can start.

Document the validation cluster topology, reviewed Citus DDL rehearsal, and required operational runbooks.

This keeps the deferred Citus operation plan actionable without starting production migration work.
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