Migration plan: Aurora orders to Postgres 17

Migrate Aurora's orders table from MySQL 8 to Postgres 17. Zero-downtime requirement. Schema has 14M rows, 8 indices, 3 FK relationships. Propose migration sequence and call out risks.

0 / 4 phases

1 / 3 reviewerswatchingthreshold:unanimous

Synthesis

Lineage-weighted quorum across 3 reviewers

Partial agreement

Partial agreement — fix two critical issues before the migration ships.

All three reviewers concur the Postgres 17 migration sequence is sound, but two critical blockers must land first. One security note from DeepSeek is unique but worth a follow-up.

Findings (5)

critical
Race condition in process_batch — two workers can claim the same row.
Agreed bycodex-1gemini-2
critical
Composite index on (account_id, created_at) is missing — required for the cutover query plan.
Agreed bycodex-1deepseek-1
high
Migration drops a column without a backfill — data loss risk.
Agreed bycodex-1
high
Auth token logged in plaintext at error.ts:142 — security issue.
Agreed bydeepseek-1
medium
Test coverage gap on the rollback path.
Agreed bygemini-2

Recommendation

Block merge until both critical findings are resolved. Open a follow-up ticket for the auth-logging fix.

Per-reviewer details below

Round 1 · per-reviewer details

codex-1Codex

WRITING

Reading <task> block.

gpt-5.5

3,422 B1m27s2 findings

gemini-2Gemini

WORKING

Parsing pack.xml (1,714 lines).

gemini-3.1-pro-preview

1,840 B1m32s3 findings

deepseek-1OpenCode

DONE

@./pack.xml read.

Lineage diversity check: am I the only opencode reviewer? yes.

Looking for what codex+gemini might have missed…

• high Auth token is logged in plaintext at error.ts:142 — security issue.

• The new feature flag has no kill-switch path in the deployment doc.

Agreement with codex on composite-index issue.

Done.

deepseek-v4-pro

4,112 B1m4s2 findings