com.twitter.scalding.typed

PartitionSchemed

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

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
HfsTapProvider, 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. HfsTapProvider
  3. Mappable
  4. TypedSource
  5. TypedSink
  6. SchemedSource
  7. Source
  8. Serializable
  9. AnyRef
  10. 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 createHfsTap(scheme: Scheme[JobConf, RecordReader[_, _], OutputCollector[_, _], _, _], path: String, sinkMode: SinkMode): Hfs

    Definition Classes
    HfsTapProvider

  13. 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

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

    Definition Classes
    AnyRef

  15. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  16. def finalize(): Unit

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

  17. 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

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

    Definition Classes
    AnyRef → Any

  19. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  20. 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

  21. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  22. 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

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

    Definition Classes
    Mappable

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

    Definition Classes
    AnyRef

  25. final def notify(): Unit

    Definition Classes
    AnyRef

  26. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  27. def partitionFields: Fields

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

    Definition Classes
    Source

  29. 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

  30. def sinkFields: Fields

    Definition Classes
    PartitionSchemed → TypedSink

  31. val sinkMode: SinkMode

    Definition Classes
    SchemedSource

  32. def sourceFields: Fields

    Definition Classes
    TypedSource

  33. 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

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

    Definition Classes
    AnyRef

  35. 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

  36. def toString(): String

    Definition Classes
    AnyRef → Any

  37. def transformForRead(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  38. def transformForWrite(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  39. 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

  40. def validateTaps(mode: Mode): Unit

    Definition Classes
    Source

  41. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  44. 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 HfsTapProvider

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