partMetaPaths := make([]string, len(parts))
	partNumbers := make([]int, len(parts))
	for idx, part := range parts {
		partMetaPaths[idx] = pathJoin(partPath, fmt.Sprintf("part.%d.meta", part.PartNumber))
		partNumbers[idx] = part.PartNumber
	}

	partInfoFiles, err := readParts(ctx, onlineDisks, minioMetaMultipartBucket, partMetaPaths, partNumbers, readQuorum)
	if err != nil {
		return oi, err
	}

				for j, actualMetaData := range actualResult.Parts {
					//  Asserting the PartNumber in the PartInfo.
					if actualMetaData.PartNumber != expectedResult.Parts[j].PartNumber {
						t.Errorf("Test %d: %s: Part %d: Expected PartNumber to be \"%d\", but instead found \"%d\"", i+1, instanceType, j+1, expectedResult.Parts[j].PartNumber, actualMetaData.PartNumber)
					}
					//  Asserting the Size in the PartInfo.

	} else {
		for i := 0; i < len(unMarshalXLMeta.Erasure.Checksums); i++ {
			if unMarshalXLMeta.Erasure.Checksums[i].PartNumber != jsoniterXLMeta.Erasure.Checksums[i].PartNumber {
				t.Errorf("Expected the Erasure Checksum PartNumber to be \"%d\", got \"%d\".", unMarshalXLMeta.Erasure.Checksums[i].PartNumber, jsoniterXLMeta.Erasure.Checksums[i].PartNumber)
			}
			if unMarshalXLMeta.Erasure.Checksums[i].Algorithm != jsoniterXLMeta.Erasure.Checksums[i].Algorithm {

package cmd

import (
	"net/http"
	"testing"
)

func BenchmarkURLQueryForm(b *testing.B) {
	req, err := http.NewRequest(http.MethodGet, "http://localhost:9000/bucket/name?uploadId=upload&partNumber=1", http.NoBody)
	if err != nil {
		b.Fatal(err)
	}

	// benchmark utility which helps obtain number of allocations and bytes allocated per ops.
	b.ReportAllocs()

const erasureAlgorithm = "rs-vandermonde"

// GetChecksumInfo - get checksum of a part.
func (e ErasureInfo) GetChecksumInfo(partNumber int) (ckSum ChecksumInfo) {
	for _, sum := range e.Checksums {
		if sum.PartNumber == partNumber {
			// Return the checksum
			return sum
		}
	}
	return ChecksumInfo{Algorithm: DefaultBitrotAlgorithm}
}

	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	rd := msgp.NewEndlessReader(buf.Bytes(), b)
	dc := msgp.NewReader(rd)
	b.Log("Size:", buf.Len(), "bytes")
	b.SetBytes(1)

	var opts ObjectOptions

	var partNumber int
	var err error
	if pn := r.Form.Get(xhttp.PartNumber); pn != "" {
		partNumber, err = strconv.Atoi(pn)
		if err != nil {
			return opts, err
		}
		if isMaxPartID(partNumber) {
			return opts, errInvalidMaxParts
		}
		if partNumber <= 0 {
			return opts, errInvalidArgument
		}
	}

		Region:    globalSite.Region(),
	})
	if err != nil {
		return levent.Event{}, err
	}

	reqParams := url.Values{}
	if partNumberStr := r.Form.Get("partNumber"); partNumberStr != "" {
		reqParams.Set("partNumber", partNumberStr)
	}
	for k := range supportedHeadGetReqParams {
		if v := r.Form.Get(k); v != "" {
			reqParams.Set(k, v)
		}
	}

	extraHeaders := http.Header{}

			checksumAlgo := erasureInfo.GetChecksumInfo(partNumber).Algorithm
			for i, disk := range latestDisks {
				if disk == OfflineDisk {
					continue
				}
				thisPartErrs := shuffleCheckParts(dataErrsByPart[partIndex], latestMeta.Erasure.Distribution)
				if thisPartErrs[i] != checkPartSuccess {
					continue
				}
				checksumInfo := copyPartsMetadata[i].Erasure.GetChecksumInfo(partNumber)

		}
	}

	var start, rangeLen int64
	totalObjectSize, err := objInfo.GetActualSize()
	if err != nil {
		return err
	}

	if rs == nil && opts.PartNumber > 0 {
		rs = partNumberToRangeSpec(objInfo, opts.PartNumber)
	}

	// For providing ranged content
	start, rangeLen, err = rs.GetOffsetLength(totalObjectSize)
	if err != nil {
		return err
	}

	// Set content length.