}

// checkUploadIDExists - verify if a given uploadID exists and is valid.
func (er erasureObjects) checkUploadIDExists(ctx context.Context, bucket, object, uploadID string, write bool) (fi FileInfo, metArr []FileInfo, err error) {
	defer func() {
		if errors.Is(err, errFileNotFound) {
			err = errUploadIDNotFound
		}
	}()

	uploadIDPath := er.getUploadIDDir(bucket, object, uploadID)

	cancel context.CancelFunc
}

func (m *metaCacheRPC) setErr(err string) {
	m.mu.Lock()
	defer m.mu.Unlock()
	meta := *m.meta
	if meta.status != scanStateError {
		meta.error = err
		meta.status = scanStateError
	} else {
		// An error is already set.
		return
	}
	meta, _ = m.o.updateMetacacheListing(meta, m.rpc)
	*m.meta = meta
}

// getErr will return an error if the listing failed.

				retErr = err
				healingLogIf(ctx, err)
				continue
			}
			// Check if bucket is object locked.
			lr, err = globalBucketObjectLockSys.Get(bucket)
			if err != nil {
				retErr = err
				healingLogIf(ctx, err)
				continue
			}
			rcfg, err = getReplicationConfig(ctx, bucket)
			if err != nil {
				retErr = err
				healingLogIf(ctx, err)
				continue

		fi.TransitionStatus = "complete"
		fi.Size = 1 << 20

		metaArr := make([]FileInfo, N)
		for i := range N {
			fi.Erasure.Index = i + 1
			metaArr[i] = fi
			if i < agree {
				continue
			}
			metaArr[i].TransitionTier, metaArr[i].TransitionedObjName = "", ""
			metaArr[i].TransitionStatus = ""
		}
		return metaArr
	}
	mkParities := func(N, agreedParity, disagreedParity, agree int) []int {

	// Save listing...
	go func() {
		if err := saver.saveMetaCacheStream(listCtx, &meta, saveCh); err != nil {
			meta.setErr(err.Error())
		}
		cancel()
	}()

	// Do listing...
	go func(o listPathOptions) {
		err := z.listMerged(listCtx, o, inCh)
		if err != nil {
			meta.setErr(err.Error())
		}
		o.debugln("listAndSave: listing", o.ID, "finished with ", err)
	}(*o)

	if len(p) == 0 {
		return 0, r.setErr(nil, false)
	}
	r.mu.Lock()
	defer r.mu.Unlock()
	if err := r.err; err != nil {
		if err == io.EOF {
			err = ErrWriteOnClosed
		}
		return 0, err
	}
	wrote := 0
	for len(p) > 0 {
		n, err = r.write(p)
		wrote += n
		if !r.block || err == nil {
			break
		}
		err = r.setErr(err, true)

	var candidate FileInfo
	var found bool
	for i, hash := range metaHashes {
		if hash == maxHash {
			if metaArr[i].IsValid() {
				if !found {
					candidate = metaArr[i]
					found = true
				}
				props := objProps{
					succModTime: metaArr[i].SuccessorModTime,
					numVersions: metaArr[i].NumVersions,
				}
				otherPropsMap[props]++
			}
		}
	}

	if found {

		}
	}

	for _, m := range metaArr {
		if m.IsValid() {
			validMeta = m
			break
		}
	}

	if !validMeta.IsValid() {
		// validMeta is invalid because all xl.meta is missing apparently
		// we should figure out if dataDirs are also missing > dataBlocks.
		dataBlocks := (len(metaArr) + 1) / 2
		if notFoundPartsErrs > dataBlocks {

func (s *Scanner) advance(n int) bool {
	if n < 0 {
		s.setErr(ErrNegativeAdvance)
		return false
	}
	if n > s.end-s.start {
		s.setErr(ErrAdvanceTooFar)
		return false
	}
	s.start += n
	return true
}

// setErr records the first error encountered.
func (s *Scanner) setErr(err error) {
	if s.err == nil || s.err == io.EOF {
		s.err = err
	}
}

		},
	}
	for idx, test := range tests {
		var metaArr []FileInfo
		for i := 0; i < 12; i++ {
			fi := test.fi1
			if i%2 == 0 {
				fi = test.fi2
			}
			metaArr = append(metaArr, fi)
		}

		parities := listObjectParities(metaArr, make([]error, len(metaArr)))
		parity := commonParity(parities, 5)
		var match int
		for _, fi := range metaArr {
			if fi.Erasure.ParityBlocks == parity {
				match++