func (m *Meta) updateDDLJob(index int64, job *model.Job, key []byte) error {
// TODO: use timestamp allocated by TSO
job.LastUpdateTS = time.Now().UnixNano()
b, err := job.Encode()
if err != nil {
return errors.Trace(err)
}
return m.txn.LSet(key, index, b)
}