retStr := "{"
	retStr = retStr + expirationStr + ","
	retStr += conditionStr
	retStr += "}"

	return []byte(retStr)
}

// newPostPolicyBytesV4 - creates a bare bones postpolicy string with key and bucket matches.
func newPostPolicyBytesV4(credential, bucketName, objectKey string, expiration time.Time) []byte {
	t := UTCNow()
	// Add the expiration date.

	ctx := r.Context()

	objectAPI, cred := validateAdminReq(ctx, w, r, policy.ConfigUpdateAdminAction)
	if objectAPI == nil {
		return
	}

	idpCfgType := mux.Vars(r)["type"]
	cfgName := mux.Vars(r)["name"]
	password := cred.SecretKey

	if !madmin.ValidIDPConfigTypes.Contains(idpCfgType) {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminConfigInvalidIDPType), r.URL)
		return
	}

	}
	validKeys = append(validKeys, Comment)

	subSysEnvVars := env.List(fmt.Sprintf("%s%s", EnvPrefix, strings.ToUpper(subSys)))

	// Set of env vars for the sub-system to validate.
	candidates := set.CreateStringSet(subSysEnvVars...)

	// Remove all default target env vars from the candidates set (as they
	// are valid).
	for _, param := range validKeys {
		paramEnvName := getEnvVarName(subSys, Default, param)

	body := `{"recursive": false, "dryRun": true, "remove": false, "scanMode": 0}`

	// Test all combinations!
	for pIdx, params := range qParamsArr {
		for vIdx, vars := range varsArr {
			_, err := extractHealInitParams(vars, params, bytes.NewReader([]byte(body)))
			isErrCase := false
			if pIdx < 4 || vIdx < 1 {
				isErrCase = true
			}

			if err != ErrNone && !isErrCase {

```
./bin/spark-submit --class org.apache.spark.examples.SparkPi \
    --master yarn-client \
    --num-executors 1 \
    --driver-memory 512m \
    --executor-memory 512m \
    --executor-cores 1 \
    examples/jars/spark-examples*.jar 10
```

The job should produce an output as shown below. Note the value of pi in the output.

```
17/03/22 23:21:10 INFO DAGScheduler: Job 0 finished: reduce at SparkPi.scala:38, took 1.302805 s

This README provides quickstart instructions on running MinIO on bare metal hardware, including container-based installations. For Kubernetes environments, use the [MinIO Kubernetes Operator](https://github.com/minio/operator/blob/master/README.md).

## Container Installation

	ctx := r.Context()

	objectAPI, _ := validateAdminReq(ctx, w, r, policy.SiteReplicationOperationAction)
	if objectAPI == nil {
		return
	}

	vars := mux.Vars(r)
	bucket := vars["bucket"]
	operation := madmin.BktOp(vars["operation"])

	var err error
	switch operation {
	default:
		err = errSRInvalidRequest(errInvalidArgument)
	case madmin.MakeWithVersioningBktOp:

		objectName     string
		destVolumeName string
		destObjectName string
		expectErr      bool
	}{
		{"foo", "myobject", "foo", "yourobject", false},
		{"foo", "yourobject", "bar", "myobject", false},
		// overwrite.
		{"foo", "otherobject", "bar", "myobject", false},
	}

	for i, testCase := range testCases {

	if contentType != "application/octet-stream" {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL)
		return
	}

	// Validate operation
	operation := mux.Vars(r)["operation"]
	if operation != "attach" && operation != "detach" {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminInvalidArgument), r.URL)
		return
	}

	isAttach := operation == "attach"

		serverHandleCmdArgs(globalServerCtxt)
	})

	// DNS cache subsystem to reduce outgoing DNS requests
	runDNSCache(ctx)

	// Handle all server environment vars.
	serverHandleEnvVars()

	// Load the root credentials from the shell environment or from
	// the config file if not defined, set the default one.
	loadRootCredentials()

	// Perform any self-tests