recordio

package main

import (
	"fmt"
	"io"
	"strings"

	"github.com/mesos/mesos-go/api/v1/lib/recordio"
)

func main() {
	var (
		r     = recordio.NewReader(strings.NewReader("6\nhello 0\n6\nworld!"))
		lines []string
	)
	for {
		fr, err := r.ReadFrame()
		if err == io.EOF {
			break
		}
		if err != nil {
			panic(err)
		}
		lines = append(lines, string(fr))
	}
	fmt.Println(lines)
}

Output:

[hello  world!]