Value Members

1.  final def !=(arg0: Any): Boolean

   Definition Classes

   AnyRef → Any

2.  final def ##(): Int

   Definition Classes

   AnyRef → Any

3.  final def ==(arg0: Any): Boolean

   Definition Classes

   AnyRef → Any

4.  final def asInstanceOf[T0]: T0

   Definition Classes

   Any

5.  def clone(): AnyRef

   Attributes

   protected[lang]

   Definition Classes

   AnyRef

   Annotations

   @throws( ... ) @native()

6.  final def eq(arg0: AnyRef): Boolean

   Definition Classes

   AnyRef

7.  def equals(arg0: Any): Boolean

   Definition Classes

   AnyRef → Any

8.  def finalize(): Unit

   Attributes

   protected[lang]

   Definition Classes

   AnyRef

   Annotations

   @throws( classOf[java.lang.Throwable] )

9.  final def getClass(): Class[_]

   Definition Classes

   AnyRef → Any

   Annotations

   @native()

10.  def getDefaultNumExecutorCores(spark: SparkSession, log: Logger, master: Option[String] = None): Int

    Get number of default cores from sparkSession(required) or master(optional) for 1 executor.

    Get number of default cores from sparkSession(required) or master(optional) for 1 executor.

    spark

    The current spark session. If master parameter is not set, the master in the spark session is used.

    master

    This param is needed for unittest. If set, the function return the value for it. if not set, basically, master in spark (SparkSession) is used.

    returns

    The number of default cores per executor based on master.

11.  def getDriverHost(spark: SparkSession): String
12.  def getExecutors(spark: SparkSession): Array[(Int, String)]

    Returns a list of executor id and host.

    Returns a list of executor id and host.

    spark

    The current spark session.

    returns

    List of executors as an array of (id,host).

13.  def getHostToIP(hostname: String): String
14.  def getJVMCPUs(spark: SparkSession): Int
15.  def getNumExecutorTasks(spark: SparkSession, numTasksPerExec: Int, log: Logger): Int

    Returns the number of executors * number of tasks.

    Returns the number of executors * number of tasks.

    spark

    The current spark session.

    numTasksPerExec

    The number of tasks per executor.

    returns

    The number of executors * number of tasks.

16.  def getNumRowsPerPartition(df: DataFrame, labelCol: Column): Array[Long]

    Get number of rows per partition of a dataframe.

    Get number of rows per partition of a dataframe. Note that this will execute a full distributed Spark app query.

    df

    The dataframe.

    returns

    The number of rows per partition (where partitionId is the array index).

17.  def getNumTasksPerExecutor(spark: SparkSession, log: Logger): Int

    Get number of tasks from dummy dataset for 1 executor.

    Get number of tasks from dummy dataset for 1 executor. Note: all executors have same number of cores, and this is more reliable than getting value from conf.

    spark

    The current spark session.

    log

    The Logger.

    returns

    The number of tasks per executor.

18.  def getTaskCpus(sparkContext: SparkContext, log: Logger): Int
19.  def hashCode(): Int

    Definition Classes

    AnyRef → Any

    Annotations

    @native()

20.  final def isInstanceOf[T0]: Boolean

    Definition Classes

    Any

21.  final def ne(arg0: AnyRef): Boolean

    Definition Classes

    AnyRef

22.  final def notify(): Unit

    Definition Classes

    AnyRef

    Annotations

    @native()

23.  final def notifyAll(): Unit

    Definition Classes

    AnyRef

    Annotations

    @native()

24.  final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes

    AnyRef

25.  def toString(): String

    Definition Classes

    AnyRef → Any

26.  final def wait(): Unit

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )

27.  final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )

28.  final def wait(arg0: Long): Unit

    Definition Classes

    AnyRef

    Annotations

    @throws( ... ) @native()