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c

org.apache.spark.rdd

OrderedRDDFunctions

class OrderedRDDFunctions[K, V, P <: Product2[K, V]] extends Logging with Serializable

Extra functions available on RDDs of (key, value) pairs where the key is sortable through an implicit conversion. They will work with any key type K that has an implicit Ordering[K] in scope. Ordering objects already exist for all of the standard primitive types. Users can also define their own orderings for custom types, or to override the default ordering. The implicit ordering that is in the closest scope will be used.

import org.apache.spark.SparkContext._

val rdd: RDD[(String, Int)] = ...
implicit val caseInsensitiveOrdering = new Ordering[String] {
  override def compare(a: String, b: String) =
    a.toLowerCase(Locale.ROOT).compare(b.toLowerCase(Locale.ROOT))
}

// Sort by key, using the above case insensitive ordering.
rdd.sortByKey()
Source
OrderedRDDFunctions.scala
Linear Supertypes
Serializable, Logging, AnyRef, Any
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  1. OrderedRDDFunctions
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Visibility
  1. Public
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Instance Constructors

  1. new OrderedRDDFunctions(self: RDD[P])(implicit arg0: Ordering[K], arg1: ClassTag[K], arg2: ClassTag[V], arg3: ClassTag[P])
    Annotations
    @DeveloperApi()

Type Members

  1. implicit class LogStringContext extends AnyRef
    Definition Classes
    Logging

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
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    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def MDC(key: LogKey, value: Any): MDC
    Attributes
    protected
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    Logging
  5. final def asInstanceOf[T0]: T0
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  6. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  9. def filterByRange(lower: K, upper: K): RDD[P]

    Returns an RDD containing only the elements in the inclusive range lower to upper.

    Returns an RDD containing only the elements in the inclusive range lower to upper. If the RDD has been partitioned using a RangePartitioner, then this operation can be performed efficiently by only scanning the partitions that might contain matching elements. Otherwise, a standard filter is applied to all partitions.

  10. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  12. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
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    protected
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    Logging
  13. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
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    Logging
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. def isTraceEnabled(): Boolean
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    protected
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    Logging
  16. def log: Logger
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    protected
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    Logging
  17. def logBasedOnLevel(level: Level)(f: => MessageWithContext): Unit
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    protected
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    Logging
  18. def logDebug(msg: => String, throwable: Throwable): Unit
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    protected
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  19. def logDebug(entry: LogEntry, throwable: Throwable): Unit
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  20. def logDebug(entry: LogEntry): Unit
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  21. def logDebug(msg: => String): Unit
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    protected
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  22. def logError(msg: => String, throwable: Throwable): Unit
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  23. def logError(entry: LogEntry, throwable: Throwable): Unit
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  24. def logError(entry: LogEntry): Unit
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    protected
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  25. def logError(msg: => String): Unit
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    protected
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  26. def logInfo(msg: => String, throwable: Throwable): Unit
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    protected
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  27. def logInfo(entry: LogEntry, throwable: Throwable): Unit
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  28. def logInfo(entry: LogEntry): Unit
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  29. def logInfo(msg: => String): Unit
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  30. def logName: String
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  31. def logTrace(msg: => String, throwable: Throwable): Unit
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  32. def logTrace(entry: LogEntry, throwable: Throwable): Unit
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    protected
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  33. def logTrace(entry: LogEntry): Unit
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    protected
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    Logging
  34. def logTrace(msg: => String): Unit
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    protected
    Definition Classes
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  35. def logWarning(msg: => String, throwable: Throwable): Unit
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    protected
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  36. def logWarning(entry: LogEntry, throwable: Throwable): Unit
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    protected
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  37. def logWarning(entry: LogEntry): Unit
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    protected
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  38. def logWarning(msg: => String): Unit
    Attributes
    protected
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    Logging
  39. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  40. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  41. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  42. def repartitionAndSortWithinPartitions(partitioner: Partitioner): RDD[(K, V)]

    Repartition the RDD according to the given partitioner and, within each resulting partition, sort records by their keys.

    Repartition the RDD according to the given partitioner and, within each resulting partition, sort records by their keys.

    This is more efficient than calling repartition and then sorting within each partition because it can push the sorting down into the shuffle machinery.

  43. def sortByKey(ascending: Boolean = true, numPartitions: Int = self.partitions.length): RDD[(K, V)]

    Sort the RDD by key, so that each partition contains a sorted range of the elements.

    Sort the RDD by key, so that each partition contains a sorted range of the elements. Calling collect or save on the resulting RDD will return or output an ordered list of records (in the save case, they will be written to multiple part-X files in the filesystem, in order of the keys).

  44. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  45. def toString(): String
    Definition Classes
    AnyRef → Any
  46. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  47. final def wait(arg0: Long): Unit
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    @throws(classOf[java.lang.InterruptedException]) @native()
  48. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  49. def withLogContext(context: Map[String, String])(body: => Unit): Unit
    Attributes
    protected
    Definition Classes
    Logging

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

Inherited from Serializable

Inherited from Logging

Inherited from AnyRef

Inherited from Any

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