easier way to get pretty printing of Metrics

[antonkulaga]

Wrinting things like

val writer = new PrintWriter(new OutputStreamWriter(System.out))

is very cumbersome. And it often fails when you run it in SparkNotebook. Why not just giving Seq[String] that can be printed with mkString("\n") if needed?

[antonkulaga]

I've tried to write a simple function that returns string but it did not work

  def prettyPrint() = {
    import java.io.{PrintWriter, StringWriter}
    val stringWriter = new StringWriter()
    val writer = new PrintWriter(stringWriter)
    val result = stringWriter.toString
    writer.close()
    result
  }

[fnothaft]

Hi @antonkulaga! I've opened a proposed fix as PR #112. Would love your thoughts on it!