backupccl: pause backup schedule in TestFullClusterBackup

Currently the backup schedule in TestFullClusterBackup can be processed by the
job scheduler in the original DB after the backup has been taken, thus causing
a difference between the original and restored clusters. Prevent this
processing by setting the first run in the future and pausing the schedule.

Fixes #71435

Release note: None

pkg/ccl/backupccl/full_cluster_backup_restore_test.go

@@ -15,6 +15,7 @@ import (
 	"path/filepath"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/cockroachdb/cockroach/pkg/base"
 	_ "github.com/cockroachdb/cockroach/pkg/ccl/partitionccl"
@@ -32,6 +33,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/util"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
+	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
 	"github.com/cockroachdb/errors"
 	"github.com/stretchr/testify/require"
 	"golang.org/x/sync/errgroup"
@@ -144,8 +146,10 @@ CREATE TABLE data2.foo (a int);
 	sqlDB.Exec(t, `GRANT CREATE, SELECT ON DATABASE data TO system_ops;`)
 	sqlDB.Exec(t, `GRANT system_ops TO maxroach1;`)
 
-	// Populate system.scheduled_jobs table.
-	sqlDB.Exec(t, `CREATE SCHEDULE FOR BACKUP data.bank INTO $1 RECURRING '@hourly' FULL BACKUP ALWAYS`, LocalFoo)
+	// Populate system.scheduled_jobs table with a first run in the future to prevent immediate adoption.
+	firstRun := timeutil.Now().Add(time.Hour).Format(timeutil.TimestampWithoutTZFormat)
+	sqlDB.Exec(t, `CREATE SCHEDULE FOR BACKUP data.bank INTO $1 RECURRING '@hourly' FULL BACKUP ALWAYS WITH SCHEDULE OPTIONS first_run = $2`, LocalFoo, firstRun)
+	sqlDB.Exec(t, `PAUSE SCHEDULES SELECT id FROM [SHOW SCHEDULES FOR BACKUP]`)
 
 	injectStats(t, sqlDB, "data.bank", "id")
 	sqlDB.Exec(t, `BACKUP TO $1`, LocalFoo)