util

sealed class Metadata extends Serializable

Metadata is a wrapper over Map[String, Any] that limits the value type to simple ones: Boolean, Long, Double, String, Metadata, Array[Boolean], Array[Long], Array[Double], Array[String], and Array[Metadata].
Metadata is a wrapper over Map[String, Any] that limits the value type to simple ones: Boolean, Long, Double, String, Metadata, Array[Boolean], Array[Long], Array[Double], Array[String], and Array[Metadata]. JSON is used for serialization.
The default constructor is private. User should use either MetadataBuilder or Metadata$#fromJson to create Metadata instances.
class MetadataBuilder extends AnyRef

Builder for Metadata.
Builder for Metadata. If there is a key collision, the latter will overwrite the former.

object Metadata extends Serializable
def benchmark[A](f: ⇒ A): A
def fileToString(file: File, encoding: String = "UTF-8"): String
def getTempFilePath(prefix: String, suffix: String = ""): File

Returns a path to a temporary file that probably does not exist.
Returns a path to a temporary file that probably does not exist. Note, there is always the race condition that someone created this file since the last time we checked. Thus, this shouldn't be used for anything security conscious.
def resourceToString(resource: String, encoding: String = "UTF-8", classLoader: ClassLoader = SparkUtils.getSparkClassLoader): String
def sideBySide(left: Seq[String], right: Seq[String]): Seq[String]
def sideBySide(left: String, right: String): Seq[String]
def stackTraceToString(t: Throwable): String
def stringOrNull(a: AnyRef): String
def stringToFile(file: File, str: String): File