func (sc *SchemaChanger) maybeWriteResumeSpan(
txn *client.Txn,
version sqlbase.DescriptorVersion,
resume roachpb.Span,
mutationIdx int,
lastCheckpoint *time.Time,
) error {
checkpointInterval := checkpointInterval
if sc.testingKnobs.WriteCheckpointInterval > 0 {
checkpointInterval = sc.testingKnobs.WriteCheckpointInterval
}
if timeutil.Since(*lastCheckpoint) < checkpointInterval {
return nil
}
tableDesc, err := sqlbase.GetTableDescFromID(txn, sc.tableID)
if err != nil {
return err
}
if tableDesc.Version != version {
return errVersionMismatch
}
tableDesc.Mutations[mutationIdx].ResumeSpan = resume
txn.SetSystemConfigTrigger()
if err := txn.Put(sqlbase.MakeDescMetadataKey(tableDesc.GetID()),
sqlbase.WrapDescriptor(tableDesc)); err != nil {
return err
}
*lastCheckpoint = timeutil.Now()
return nil
}
