Class

com.twitter.scalding.typed

PartitionedTextLine

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case class PartitionedTextLine[P](path: String, template: String, encoding: String = TextLine.DEFAULT_CHARSET)(implicit valueSetter: TupleSetter[String], valueConverter: TupleConverter[(Long, String)], partitionSetter: TupleSetter[P], partitionConverter: TupleConverter[P]) extends SchemedSource with TypedSink[(P, String)] with Mappable[(P, (Long, String))] with HfsTapProvider with Serializable with Product with Serializable

Scalding source to read or write partitioned text.

For writing it expects a pair of (P, String), where P is the data used for partitioning and String is the output to write out. Below is an example.

val data = List(
  (("a", "x"), "line1"),
  (("a", "y"), "line2"),
  (("b", "z"), "line3")
)
IterablePipe(data, flowDef, mode)
  .write(PartitionTextLine[(String, String)](args("out"), "col1=%s/col2=%s"))

For reading it produces a pair (P, (Long, String)) where P is the partition data, Long is the offset into the file and String is a line from the file. Below is an example.

val in: TypedPipe[((String, String), (Long, String))] = PartitionTextLine[(String, String)](args("in"), "col1=%s/col2=%s")
path

Base path of the partitioned directory

template

Template for the partitioned path

encoding

Text encoding of the file content

Source
PartitionedTextLine.scala
Linear Supertypes
Serializable, Product, Equals, HfsTapProvider, Mappable[(P, (Long, String))], TypedSource[(P, (Long, String))], TypedSink[(P, String)], SchemedSource, Source, Serializable, AnyRef, Any
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Inherited
  1. PartitionedTextLine
  2. Serializable
  3. Product
  4. Equals
  5. HfsTapProvider
  6. Mappable
  7. TypedSource
  8. TypedSink
  9. SchemedSource
  10. Source
  11. Serializable
  12. AnyRef
  13. Any
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Visibility
  1. Public
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Instance Constructors

  1. new PartitionedTextLine(path: String, template: String, encoding: String = TextLine.DEFAULT_CHARSET)(implicit valueSetter: TupleSetter[String], valueConverter: TupleConverter[(Long, String)], partitionSetter: TupleSetter[P], partitionConverter: TupleConverter[P])

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    path

    Base path of the partitioned directory

    template

    Template for the partitioned path

    encoding

    Text encoding of the file content

Value Members

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

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  4. def andThen[U](fn: ((P, (Long, String))) ⇒ U): TypedSource[U]

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    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
  5. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  6. def checkFlowDefNotNull()(implicit flowDef: FlowDef, mode: Mode): Unit

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    Attributes
    protected
    Definition Classes
    Source
  7. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  8. def contraMap[U](fn: (U) ⇒ (P, String)): TypedSink[U]

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    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
  9. def converter[U >: (P, (Long, String))]: TupleConverter[U]

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    Combine both the partition and value converter to extract the data from a flat cascading tuple into a pair of P and (offset, line).

    Combine both the partition and value converter to extract the data from a flat cascading tuple into a pair of P and (offset, line).

    Definition Classes
    PartitionedTextLineTypedSource
  10. def createHfsTap(scheme: Scheme[JobConf, RecordReader[_, _], OutputCollector[_, _], _, _], path: String, sinkMode: SinkMode): Hfs

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    Definition Classes
    HfsTapProvider
  11. def createTap(readOrWrite: AccessMode)(implicit mode: Mode): Tap[_, _, _]

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    Creates the taps for local and hdfs mode.

    Creates the taps for local and hdfs mode.

    Definition Classes
    PartitionedTextLineSource
  12. val encoding: String

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    Text encoding of the file content

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

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    Definition Classes
    AnyRef
  14. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  15. final def flatMapTo[U](out: Fields)(mf: ((P, (Long, String))) ⇒ TraversableOnce[U])(implicit flowDef: FlowDef, mode: Mode, setter: TupleSetter[U]): Pipe

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

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    Definition Classes
    AnyRef → Any
  17. def hdfsScheme: Scheme[JobConf, RecordReader[_, _], OutputCollector[_, _], _, _]

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    The scheme to use if the source is on hdfs.

    The scheme to use if the source is on hdfs.

    Definition Classes
    PartitionedTextLineSchemedSource
  18. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  19. def localScheme: Scheme[Properties, InputStream, OutputStream, _, _]

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    The scheme to use if the source is local.

    The scheme to use if the source is local.

    Definition Classes
    PartitionedTextLineSchemedSource
  20. final def mapTo[U](out: Fields)(mf: ((P, (Long, String))) ⇒ U)(implicit flowDef: FlowDef, mode: Mode, setter: TupleSetter[U]): Pipe

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    Definition Classes
    Mappable
  21. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  22. final def notify(): Unit

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    Definition Classes
    AnyRef
  23. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  24. implicit val partitionConverter: TupleConverter[P]

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  25. val partitionFields: Fields

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  26. implicit val partitionSetter: TupleSetter[P]

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  27. val path: String

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    Base path of the partitioned directory

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

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    Definition Classes
    Source
  29. def setter[U <: (P, String)]: TupleSetter[U]

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

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

    Definition Classes
    PartitionedTextLineTypedSink
  30. def sinkFields: Fields

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    Definition Classes
    PartitionedTextLineTypedSink
  31. val sinkMode: SinkMode

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    Definition Classes
    SchemedSource
  32. def sourceFields: Fields

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    Definition Classes
    TypedSource
  33. def sourceId: String

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    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

    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

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    Definition Classes
    AnyRef
  35. val template: String

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    Template for the partitioned path

  36. def toIterator(implicit config: Config, mode: Mode): Iterator[(P, (Long, String))]

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    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
  37. def transformForRead(pipe: Pipe): Pipe

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    Attributes
    protected
    Definition Classes
    Source
  38. def transformForWrite(pipe: Pipe): Pipe

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    Attributes
    protected
    Definition Classes
    Source
  39. def transformInTest: Boolean

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    The mock passed in to scalding.JobTest may be considered as a mock of the Tap or the Source.

    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

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    Definition Classes
    Source
  41. implicit val valueConverter: TupleConverter[(Long, String)]

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  42. implicit val valueSetter: TupleSetter[String]

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  43. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  44. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  45. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  46. def writeFrom(pipe: Pipe)(implicit flowDef: FlowDef, mode: Mode): Pipe

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    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]

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    Definition Classes
    Source
    Annotations
    @deprecated
    Deprecated

    (Since version 0.9.0) replace with Mappable.toIterator

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from HfsTapProvider

Inherited from Mappable[(P, (Long, String))]

Inherited from TypedSource[(P, (Long, String))]

Inherited from TypedSink[(P, String)]

Inherited from SchemedSource

Inherited from Source

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped