Clickhouse: set mutations_sync 2 at delete version to avoid apply down migration twice

dialect.go

@@ -322,7 +322,7 @@ func (m ClickHouseDialect) migrationSQL() string {
 }
 
 func (m ClickHouseDialect) deleteVersionSQL() string {
-	return fmt.Sprintf("ALTER TABLE %s DELETE WHERE version_id = $1", TableName())
+	return fmt.Sprintf("ALTER TABLE %s DELETE WHERE version_id = $1 SETTINGS mutations_sync = 2", TableName())
 }
 
 ////////////////////////////

go.mod

@@ -4,7 +4,6 @@ go 1.17
 
 require (
 	github.com/ClickHouse/clickhouse-go/v2 v2.2.0
-	github.com/avast/retry-go/v4 v4.3.2
 	github.com/denisenkom/go-mssqldb v0.12.3
 	github.com/go-sql-driver/mysql v1.7.0
 	github.com/jackc/pgx/v4 v4.17.2
@@ -56,6 +55,7 @@ require (
 	github.com/remyoudompheng/bigfft v0.0.0-20220927061507-ef77025ab5aa // indirect
 	github.com/shopspring/decimal v1.3.1 // indirect
 	github.com/sirupsen/logrus v1.9.0 // indirect
+	github.com/stretchr/testify v1.8.1 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/xeipuuv/gojsonschema v1.2.0 // indirect

go.sum

@@ -16,8 +16,6 @@ github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v
 github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 h1:TngWCqHvy9oXAN6lEVMRuU21PR1EtLVZJmdB18Gu3Rw=
 github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk=
 github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
-github.com/avast/retry-go/v4 v4.3.2 h1:x4sTEu3jSwr7zNjya8NTdIN+U88u/jtO/q3OupBoDtM=
-github.com/avast/retry-go/v4 v4.3.2/go.mod h1:rg6XFaiuFYII0Xu3RDbZQkxCofFwruZKW8oEF1jpWiU=
 github.com/bkaradzic/go-lz4 v1.0.0/go.mod h1:0YdlkowM3VswSROI7qDxhRvJ3sLhlFrRRwjwegp5jy4=
 github.com/cenkalti/backoff/v4 v4.1.3 h1:cFAlzYUlVYDysBEH2T5hyJZMh3+5+WCBvSnK6Q8UtC4=
 github.com/cenkalti/backoff/v4 v4.1.3/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=

tests/clickhouse/clickhouse_test.go

@@ -1,13 +1,10 @@
 package clickhouse_test
 
 import (
-	"database/sql"
-	"errors"
 	"path/filepath"
 	"testing"
 	"time"
 
-	"github.com/avast/retry-go/v4"
 	"github.com/pressly/goose/v3"
 	"github.com/pressly/goose/v3/internal/check"
 	"github.com/pressly/goose/v3/internal/testdb"
@@ -23,16 +20,6 @@ func TestClickUpDownAll(t *testing.T) {
 
 	check.NoError(t, goose.SetDialect("clickhouse"))
 
-	retryCheckTableMutation := func(table string) func() error {
-		return func() error {
-			ok := checkTableMutation(t, db, table)
-			if !ok {
-				return errors.New("mutation not done for table: " + table)
-			}
-			return nil
-		}
-	}
-
 	/*
 		This test applies all up migrations, asserts we have all the entries in
 		the versions table, applies all down migration and asserts we have zero
@@ -69,11 +56,6 @@ func TestClickUpDownAll(t *testing.T) {
 
 	err = goose.DownTo(db, migrationDir, 0)
 	check.NoError(t, err)
-	err = retry.Do(
-		retryCheckTableMutation(goose.TableName()),
-		retry.Delay(1*time.Second),
-	)
-	check.NoError(t, err)
 
 	currentVersion, err = goose.GetDBVersion(db)
 	check.NoError(t, err)
@@ -170,40 +152,3 @@ func TestRemoteImportMigration(t *testing.T) {
 	check.NoError(t, err)
 	check.Number(t, count, 265)
 }
-
-func checkTableMutation(t *testing.T, db *sql.DB, tableName string) bool {
-	t.Helper()
-	rows, err := db.Query(
-		`select mutation_id, command, is_done, create_time from system.mutations where table=$1`,
-		tableName,
-	)
-	check.NoError(t, err)
-
-	type result struct {
-		mutationID string    `db:"mutation_id"`
-		command    string    `db:"command"`
-		isDone     int64     `db:"is_done"`
-		createTime time.Time `db:"create_time"`
-	}
-	var results []result
-	for rows.Next() {
-		var r result
-		err = rows.Scan(&r.mutationID, &r.command, &r.isDone, &r.createTime)
-		check.NoError(t, err)
-		results = append(results, r)
-	}
-	check.NoError(t, rows.Close())
-	check.NoError(t, rows.Err())
-	// No results means there are no mutations. Assume they are all done.
-	if len(results) == 0 {
-		return true
-	}
-	// Loop through all the mutations, if at least one of them is
-	// not done, return false.
-	for _, r := range results {
-		if r.isDone != 1 {
-			return false
-		}
-	}
-	return true
-}