[weicao]

Problem

When a Dolt source database already exists before replica setup, Dolt cannot use MySQL Shell copy-instance, so MyDuck starts replication without a target schema. The first streamed CREATE TABLE test.items then fails with database not found: test.

Change

• Create only the explicit SOURCE_DSN database with CREATE DATABASE IF NOT EXISTS before START REPLICA.
• Keep table and row creation on the binlog path and preserve all replication filters.
• Assert the Dolt test target schema exists before generating source tables.
• Document the DSN requirement.

This branch is based on the already reviewed signed PR #501 branch, so the PR diff is limited to this fix and is intentionally not a merge of PR #501.

Validation

Verification image: task99-dolt-init-fix-image:20260918-r3, local manifest sha256:83e6b4e0730ffb12d7f56cff3842dbb7a9959066e49530205393651ce44fcbbf, built by overlaying the changed setup scripts on the unchanged official base apecloud/myduckserver@sha256:85ce0d0d867562ebdc932b3fd71a4ddbb2cae81155b9462fdeecec293210bd94.

bash .github/scripts/replication-test.sh dolt passed with initial/incremental rows 2 -> 3, filtered test.skip, STOP/START row 4, same-volume process restart row 5, replica IO/SQL errors 0, and no leftover test resources. Full log SHA-256: a9efb74225e56cd9ac7981811a020df61f288216492eb1264f3426b29dfb4470.

A stubbed setup harness ran the setup twice against SOURCE_DATABASE=test; both emitted the same idempotent schema statement and no query-only schema statement. Log SHA-256: 4f3e56b0d86d5391c8174a89230664dd44f82f2dd11323a2b355a9f2c7d77825.

The official 85ce0d0d failure originals remain unchanged.

[leon-ape]

Independent review of PR #502 head 78f6ea6f837f544d6eed5a11bdf0e63041c8a6e1.

This is not merge, not release, not a retag. Official image 85ce0d0d PostgreSQL and the unrepaired Dolt CI red stay fail until a new identity is proven. Overlay run ≠ GitHub Dolt job cleared.

GitHub identity — PASS

• Base branch task99-github-signed-20260918 / parent 5e88e3ec3c1a67802206f2f44ce9f02fddaec85d (PR #501 head).
• Head tree 7a84ba9813ecaff38354c6024c3b3da2eef89059.
• REST commit.verification: verified=true, reason=valid, committer web-flow.
• One commit. Files: .github/scripts/replication-test.sh, devtools/replica-setup-mysql/replica_setup.sh, docs/tutorial/replica-setup-dolt.md. Does not reopen PR #501's 16 files.
• PR #499 and #501 remain OPEN. No auto-merge.

Diff vs stated boundary — PASS (code)

replica_setup.sh creates CREATE DATABASE IF NOT EXISTS from explicit SOURCE_DATABASE after snapshot skip and before START REPLICA. Skips empty/mysql. Rejects backtick. No CREATE TABLE / INSERT. Filters unchanged. Dolt regression asserts information_schema.schemata has test before create_source_data.

Local unsigned 3e59120b is not this GitHub SHA; the signed candidate is 78f6ea6f.

Originals — HOLD, not PASS

Attachment SHA match:

File	sha256
task99-dolt-init-fix-20260918.md	e7c4204f9a8527684f2cb1e58a88bb45599968779fc6905589d48f3a40fa5079
task99-dolt-image-fix-r3.log	a9efb74225e56cd9ac7981811a020df61f288216492eb1264f3426b29dfb4470
task99-schema-init-stub.log	4f3e56b0d86d5391c8174a89230664dd44f82f2dd11323a2b355a9f2c7d77825

What the Dolt log independently shows: phase dumps initial 2, incremental 3, STOP/START 4, process-restart 5; Last_IO_Errno/Last_SQL_Errno 0; GTID 1-4 → 1-7; ends dolt replication regression passed.

What it does not contain: image 85ce0d0d, overlay digest 83e6b4e0…, CREATE DATABASE, schema-count assertion, test.skip query, docker/volume/network cleanup, numeric exit code.

After process-restart, Replicate_Ignore_Table is empty (was test.skip in earlier phases). Filter persistence is not shown.

Stub log shows two setup runs and the echo Initializing target schema from SOURCE_DATABASE=test.... It does not contain CREATE DATABASE IF NOT EXISTS \test`;`. Cannot independently confirm DSN-only SQL or that INCLUDE_SCHEMAS-only names were not created.

Do not treat the report text as a substitute for those missing original fields.

Out of this review

Do not merge #502 / #501 / #499. Do not retag. Do not write GitHub Dolt CI as cleared. 85ce0d0d PostgreSQL Metabase/Superset failures stay fail.

[leon-ape]

Independent re-review of PR #502 head 78f6ea6f plus r4c originals.

This is a code Approve only. Not merge, not release, not a retag. Overlay run ≠ official-image Dolt CI cleared. 85ce0d0d PostgreSQL Metabase/Superset failures stay fail.

GitHub

Parent 5e88e3ec (PR #501). Tree 7a84ba98. verified=true/reason=valid. Three files. Local run source 3e59120b reports the same tree.

Independent GitHub checks on this PR: test-replication postgres/mysql/mariadb/dolt COMPLETED/SUCCESS, mergeStateStatus=CLEAN. Auto-merge is off.

r4c originals — PASS (previous holds closed)

SHA match:

• report 70e975ddce1c740afa03af3697a5983e75024cbe1241c3997d77079b9fff40c7
• redacted trace 0837aebc841bb87b6620b11e52102b247c04bd6b7854d5ef65d7515f3d93b922
• stub 5e3ec31b0b32aff15e6d880fb1d63e042f4b9f116c795049fc3aa5cbe9058992

Trace independently contains: command, source tree 7a84ba98, script/setup SHA, overlay manifest 83e6b4e0… on base 85ce0d0d, query audit CREATE DATABASE IF NOT EXISTS \test`then filter thenSTART REPLICA, schema_name=test count 1 before source tables, skip count 0, phases 2/3/4/5 with GTID 1-4→1-7, Ignore_Table test.skipuntil SERVER-mode restart (empty, skip rows still 0), docker rm/volume/network then empty postcondition,script_exit_code: 0`.

Stub two runs: stdin is exactly CREATE DATABASE IF NOT EXISTS \test`;`. No query_only CREATE DATABASE.

Out of this review

Do not merge #502/#501/#499. Do not retag. Do not write the unrepaired official Dolt job as cleared.