com.twitter.scalding.typed

PartitionSchemed

trait PartitionSchemed[P, T] extends SchemedSource with TypedSink[(P, T)] with Mappable[(P, T)]

Trait to assist with creating partitioned sources.

Apart from the abstract members below, hdfsScheme and localScheme also need to be set. Note that for both of them the sink fields need to be set to only include the actual fields that should be written to file and not the partition fields.

Linear Supertypes
Mappable[(P, T)], TypedSource[(P, T)], TypedSink[(P, T)], SchemedSource, Source, Serializable, AnyRef, Any
Known Subclasses
PartitionedDelimitedSource
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Inherited
  1. PartitionSchemed
  2. Mappable
  3. TypedSource
  4. TypedSink
  5. SchemedSource
  6. Source
  7. Serializable
  8. AnyRef
  9. Any
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Abstract Value Members

  1. abstract def fields: Fields

  2. abstract def partitionConverter: TupleConverter[P]

  3. abstract def partitionSetter: TupleSetter[P]

  4. abstract def path: String

  5. abstract def template: String

  6. abstract def valueConverter: TupleConverter[T]

  7. abstract def valueSetter: TupleSetter[T]

Concrete Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  6. def andThen[U](fn: ((P, T)) ⇒ U): TypedSource[U]

    Transform this TypedSource into another by mapping after.

    Transform this TypedSource into another by mapping after. We don't call this map because of conflicts with Mappable, unfortunately

    Definition Classes
    TypedSource

  7. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  8. def checkFlowDefNotNull(implicit flowDef: FlowDef, mode: Mode): Unit

    Attributes
    protected
    Definition Classes
    Source

  9. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  10. def contraMap[U](fn: (U) ⇒ (P, T)): TypedSink[U]

    Transform this sink into another type by applying a function first

    Transform this sink into another type by applying a function first

    Definition Classes
    TypedSink

  11. def converter[U >: (P, T)]: TupleConverter[U]

    Combine both the partition and value converter to extract the data from a flat cascading tuple into a pair of P and T.

    Combine both the partition and value converter to extract the data from a flat cascading tuple into a pair of P and T.

    Definition Classes
    PartitionSchemed → TypedSource

  12. def createTap(readOrWrite: AccessMode)(implicit mode: Mode): Tap[_, _, _]

    Creates the taps for local and hdfs mode.

    Creates the taps for local and hdfs mode.

    Definition Classes
    PartitionSchemed → Source

  13. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  14. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  15. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  16. final def flatMapTo[U](out: Fields)(mf: ((P, T)) ⇒ TraversableOnce[U])(implicit flowDef: FlowDef, mode: Mode, setter: TupleSetter[U]): Pipe

    If you want to filter, you should use this and output a 0 or 1 length Iterable.

    If you want to filter, you should use this and output a 0 or 1 length Iterable. Filter does not change column names, and we generally expect to change columns here

    Definition Classes
    Mappable

  17. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  18. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  19. def hdfsScheme: Scheme[JobConf, RecordReader[_, _], OutputCollector[_, _], _, _]

    The scheme to use if the source is on hdfs.

    The scheme to use if the source is on hdfs.

    Definition Classes
    SchemedSource

  20. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  21. def localScheme: Scheme[Properties, InputStream, OutputStream, _, _]

    The scheme to use if the source is local.

    The scheme to use if the source is local.

    Definition Classes
    SchemedSource

  22. final def mapTo[U](out: Fields)(mf: ((P, T)) ⇒ U)(implicit flowDef: FlowDef, mode: Mode, setter: TupleSetter[U]): Pipe

    Definition Classes
    Mappable

  23. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  24. final def notify(): Unit

    Definition Classes
    AnyRef

  25. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  26. def partitionFields: Fields

  27. def read(implicit flowDef: FlowDef, mode: Mode): Pipe

    Definition Classes
    Source

  28. def setter[U <: (P, T)]: TupleSetter[U]

    Flatten a pair of P and T into a cascading tuple.

    Flatten a pair of P and T into a cascading tuple.

    Definition Classes
    PartitionSchemed → TypedSink

  29. def sinkFields: Fields

    Definition Classes
    PartitionSchemed → TypedSink

  30. val sinkMode: SinkMode

    Definition Classes
    SchemedSource

  31. def sourceFields: Fields

    Definition Classes
    TypedSource

  32. def sourceId: String

    This is a name the refers to this exact instance of the source (put another way, if s1.

    This is a name the refers to this exact instance of the source (put another way, if s1.sourceId == s2.sourceId, the job should work the same if one is replaced with the other

    Definition Classes
    Source

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

    Definition Classes
    AnyRef

  34. def toIterator(implicit config: Config, mode: Mode): Iterator[(P, T)]

    Allows you to read a Tap on the submit node NOT FOR USE IN THE MAPPERS OR REDUCERS.

    Allows you to read a Tap on the submit node NOT FOR USE IN THE MAPPERS OR REDUCERS. Typical use might be to read in Job.next to determine if another job is needed

    Definition Classes
    Mappable

  35. def toString(): String

    Definition Classes
    AnyRef → Any

  36. def transformForRead(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  37. def transformForWrite(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  38. def transformInTest: Boolean

    The mock passed in to scalding.

    The mock passed in to scalding.JobTest may be considered as a mock of the Tap or the Source. By default, as of 0.9.0, it is considered as a Mock of the Source. If you set this to true, the mock in TestMode will be considered to be a mock of the Tap (which must be transformed) and not the Source.

    Definition Classes
    Source

  39. def validateTaps(mode: Mode): Unit

    Definition Classes
    Source

  40. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  42. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  43. def writeFrom(pipe: Pipe)(implicit flowDef: FlowDef, mode: Mode): Pipe

    write the pipe but return the input so it can be chained into the next operation

    write the pipe but return the input so it can be chained into the next operation

    Definition Classes
    Source

Deprecated Value Members

  1. def readAtSubmitter[T](implicit mode: Mode, conv: TupleConverter[T]): Stream[T]

    Definition Classes
    Source
    Annotations
    @deprecated
    Deprecated

    (Since version 0.9.0) replace with Mappable.toIterator

Inherited from Mappable[(P, T)]

Inherited from TypedSource[(P, T)]

Inherited from TypedSink[(P, T)]

Inherited from SchemedSource

Inherited from Source

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped