func RemoveJob(ds appwrap.Datastore, jobId int64) error { jobKey := ds.NewKey(JobEntity, "", jobId, nil) q := ds.NewQuery(TaskEntity).Filter("Job =", jobKey).KeysOnly() keys, err := q.GetAll(nil) if err != nil { return err } keys = append(keys, jobKey) i := 0 for i < len(keys) { last := i + 250 if last > len(keys) { last = len(keys) } if err := ds.DeleteMulti(keys[i:last]); err != nil { return err } i = last } return nil }