Object: object,
		}
	}

	if opts.DeletePrefix {
		if opts.Expiration.Expire {
			// Expire all versions expiration must still verify the state() on disk
			// via a getObjectInfo() call as follows, any read quorum issues we
			// must not proceed further for safety reasons. attempt a MRF heal
			// while we see such quorum errors.
			goi, _, gerr := er.getObjectInfoAndQuorum(ctx, bucket, object, opts)

		// as a List() call is an important performance improvement.
		//
		// Spark based s3a committers are a  big enough use-case to have this optimization.
		//
		// A sample code to see the improvements is as follows, this sample code is
		// simply a read on JSON from MinIO and write it back as "parquet".
		//
		// import org.apache.spark.sql.SparkSession

) {
	anonTestStr := "Anonymous HTTP request test"
	unknownSignTestStr := "Unknown HTTP signature test"

	// simple function which returns a message which gives the context of the test
	// and then followed by the actual error message.
	failTestStr := func(testType, failMsg string) string {
		return fmt.Sprintf("MinIO %s: %s fail for \"%s\": \n<Error> %s", instanceType, testType, testName, failMsg)
	}

	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 {
		oi.UserDefined[xhttp.AmzStorageClass] = objInfo.StorageClass
	}

ing/nats-streaming-intro/) that offers additional functionality like `At-least-once-delivery`, and `Publisher rate limiting`. To configure MinIO server to send notifications to NATS Streaming server, update the MinIO server configuration file as follows:

Read more about sections `cluster_id`, `client_id` on [NATS documentation](https://github.com/nats-io/nats-streaming-server/blob/master/README.md). Section `maxPubAcksInflight` is explained [here](https://github.com/nats-io/stan.go#pu...

		v := strings.ToLower(vs)
		switch v {
		case "true", "false":
			objectLockEnabled = v == "true"
		default:
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
			return
		}
	}

	forceCreate := false
	if vs := r.Header.Get(xhttp.MinIOForceCreate); len(vs) > 0 {
		v := strings.ToLower(vs)
		switch v {
		case "true", "false":

			case tierFVIDKey, tierFVMarkerKey:
				continue
			}
		}
		if equals(k, "x-amz-storage-class") && string(v) == storageclass.STANDARD {
			continue
		}
		switch {
		case strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower), equals(k, VersionPurgeStatusKey):
			fi.Metadata[k] = string(v)
		}
	}
	fi.ReplicationState = getInternalReplicationState(fi.Metadata)
	fi.Deleted = !fi.VersionPurgeStatus().Empty()