return
				}
			}
		case "UserDefined":
			var zb0003 uint32
			zb0003, bts, err = msgp.ReadMapHeaderBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "UserDefined")
				return
			}
			if z.UserDefined == nil {
				z.UserDefined = make(map[string]string, zb0003)
			} else if len(z.UserDefined) > 0 {
				for key := range z.UserDefined {
					delete(z.UserDefined, key)
				}

	if userDefined["content-type"] == "" {
		userDefined["content-type"] = mimedb.TypeByExtension(path.Ext(object))
	}

	// if storageClass is standard no need to save it as part of metadata.
	if userDefined[xhttp.AmzStorageClass] == storageclass.STANDARD {
		delete(userDefined, xhttp.AmzStorageClass)
	}

	// Fill all the necessary metadata.
	// Update `xl.meta` content on each disks.

	}

	oi.UserDefined = make(map[string]string, len(objInfo.Metadata))
	for k, v := range objInfo.Metadata {
		oi.UserDefined[k] = v[0]
	}

	ce, ok := oi.UserDefined[xhttp.ContentEncoding]
	if !ok {
		ce, ok = oi.UserDefined[strings.ToLower(xhttp.ContentEncoding)]
	}
	if ok {
		oi.ContentEncoding = ce
	}

	_, ok = oi.UserDefined[xhttp.AmzStorageClass]
	if !ok {

			int64(len(object.content)), hex.EncodeToString(md5Bytes[:]), ""), ObjectOptions{
			Versioned:   globalBucketVersioningSys.PrefixEnabled(object.parentBucket, object.name),
			UserDefined: object.meta,
		})
		if err != nil {
			t.Fatalf("%s : %s", instanceType, err.Error())
		}
		if object.addDeleteMarker {

			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL)
			return
		}
		tagsStr := tags.String()
		opts.UserDefined[xhttp.AmzObjectTagging] = tagsStr
	} else {
		// avoid user set an invalid tag using `X-Amz-Tagging`
		delete(opts.UserDefined, xhttp.AmzObjectTagging)
	}

	objInfo, err := objectAPI.PutObject(ctx, bucket, object, pReader, opts)
	if err != nil {

		}
	}

	putOpts := ObjectOptions{
		ServerSideEncryption: dstOpts.ServerSideEncryption,
		UserDefined:          srcInfo.UserDefined,
		Versioned:            dstOpts.Versioned,
		VersionID:            dstOpts.VersionID,
		MTime:                dstOpts.MTime,
		NoLock:               true,
	}

		t.Fatalf("%s : %s", instanceType, err)
	}
	// Initiate Multipart Upload on the above created bucket.
	res, err := obj.NewMultipartUpload(context.Background(), bucketNames[0], objectNames[0], ObjectOptions{UserDefined: map[string]string{"X-Amz-Meta-Id": "id"}})
	if err != nil {
		// Failed to create NewMultipartUpload, abort.
		t.Fatalf("%s : %s", instanceType, err)
	}

	uploadIDs = append(uploadIDs, res.UploadID)

":"1.0","configurationId":"Config","bucket":{"name":"images","ownerIdentity":{"principalId":"minio"},"arn":"arn:aws:s3:::images"},"object":{"key":"myphoto.jpg","size":248682,"eTag":"f1671feacb8bbf7b0397c6e9364e8c92","contentType":"image/jpeg","userDefined":{"content-type":"image/jpeg"},"versionId":"1","sequencer":"14CF20BD1EFD5B93"}},"source":{"host":"192.168.1.80","port":"55328","userAgent":"MinIO (linux; amd64) minio-go/2.0.4 mc/DEVELOPMENT.GOGET"}}],"level":"info","msg":"","time":"2017-07-07T11:46:37-07:00"}...