lastDayStats map[string]*lastDayTierStats
}

func (t *transitionState) queueTransitionTask(oi ObjectInfo, event lifecycle.Event, src lcEventSrc) {
	task := transitionTask{objInfo: oi, event: event, src: src}
	select {
	case <-t.ctx.Done():
	case t.transitionCh <- task:
	default:
		switch src {
		case lcEventSrc_s3PutObject, lcEventSrc_s3CopyObject, lcEventSrc_s3CompleteMultipartUpload: