return evalDisks(disks, errs), err
}

// PutObjectPart - reads incoming stream and internally erasure codes
// them. This call is similar to single put operation but it is part
// of the multipart transaction.
//
// Implements S3 compatible Upload Part API.

			}
			opts.EncryptFn = metadataEncrypter(objectEncryptionKey)
		}
	}
	opts.IndexCB = idxCb

	opts.ReplicationRequest = sourceReplReq
	putObjectPart := objectAPI.PutObjectPart

	partInfo, err := putObjectPart(ctx, bucket, object, uploadID, partID, pReader, opts)
	if err != nil {
		// Verify if the underlying error is signature mismatch.
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)

}

// TestAPIPutObjectPartHandlerStreaming - Tests validate the response of PutObjectPart HTTP handler
// when the request signature type is `streaming signature`.
func TestAPIPutObjectPartHandlerStreaming(t *testing.T) {
	defer DetectTestLeak(t)()
	ExecExtendedObjectLayerAPITest(t, testAPIPutObjectPartHandlerStreaming, []string{"NewMultipart", "PutObjectPart"})
}

	return set.NewMultipartUpload(ctx, bucket, object, opts)
}

// PutObjectPart - writes part of an object to hashedSet based on the object name.
func (s *erasureSets) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error) {
	set := s.getHashedSet(object)
	return set.PutObjectPart(ctx, bucket, object, uploadID, partID, data, opts)
}

	// Upload part1.
	fiveMBBytes := bytes.Repeat([]byte("a"), 5*humanize.MiByte)
	md5Writer := md5.New()
	md5Writer.Write(fiveMBBytes)
	etag1 := hex.EncodeToString(md5Writer.Sum(nil))
	sha256sum := ""
	_, err = obj.PutObjectPart(context.Background(), bucket, object, uploadID, 1, mustGetPutObjReader(t, bytes.NewReader(fiveMBBytes), int64(len(fiveMBBytes)), etag1, sha256sum), opts)
	if err != nil {
		// Failed to upload object part, abort.

			hr, err := hash.NewReader(ctx, io.LimitReader(gr, part.Size), part.Size, "", "", part.ActualSize)
			if err != nil {
				return fmt.Errorf("rebalanceObject: hash.NewReader() %w", err)
			}
			pi, err := z.PutObjectPart(ctx, bucket, oi.Name, res.UploadID,
				part.Number,
				NewPutObjReader(hr),
				ObjectOptions{
					PreserveETag: part.ETag, // Preserve original ETag to ensure same metadata.
					IndexCB: func() []byte {

		startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (info PartInfo, err error)
	PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error)

		case "PutObjectPart":
			// Register PutObjectPart handler.
			bucket.Methods(http.MethodPut).Path("/{object:.+}").HandlerFunc(api.PutObjectPartHandler).Queries("partNumber", "{partNumber:.*}", "uploadId", "{uploadId:.*}")
		case "ListObjectParts":

			CustomHeader: cHeader,
		}

		var size int64
		if isSSEC {
			size = partInfo.Size
		} else {
			size = partInfo.ActualSize
		}
		objectSize += size
		pInfo, err := c.PutObjectPart(ctx, bucket, object, uploadID, partInfo.Number, hr, size, popts)
		if err != nil {
			return err
		}
		if pInfo.Size != size {