Packages

  • package root
    Definition Classes
    root
  • package com
    Definition Classes
    root
  • package adform
    Definition Classes
    com
  • package streamloader

    The entry point of the stream loader library is the StreamLoader class, which requires a KafkaSource and a Sink.

    The entry point of the stream loader library is the StreamLoader class, which requires a KafkaSource and a Sink. Once started it will subscribe to the provided topics and will start polling and sinking records. The sink has to be able to persist records and to look up committed offsets (technically this is optional, but without it there would be no way to provide any delivery guarantees). A large class of sinks are batch based, implemented as RecordBatchingSink. This sink accumulate batches of records using some RecordBatcher and once ready, stores them to some underlying RecordBatchStorage. A common type of batch is file based, i.e. a batcher might write records to a temporary file and once the file is full the sink commits the file to some underlying storage, such as a database or a distributed file system like HDFS.

    A sketch of the class hierarchy illustrating the main classes and interfaces can be seen below.



    For concrete storage implementations see the clickhouse, hadoop, s3 and vertica packages. They also contain more file builder implementations than just the CsvFileBuilder included in the core library.

    Definition Classes
    adform
  • package sink
    Definition Classes
    streamloader
  • package file
    Definition Classes
    sink
  • object FileCommitStrategy
    Definition Classes
    file
  • FuzzyReachedAnyOf
  • ReachedAnyOf

case class FuzzyReachedAnyOf(fileOpenDurationDistribution: Option[GaussianDistribution[Duration]] = None, fileSizeDistribution: Option[GaussianDistribution[Long]] = None, recordsWrittenDistribution: Option[GaussianDistribution[Long]] = None, fileSizeSamplingBatchSize: Option[Long] = None)(randomSeed: Option[Int] = None) extends FileCommitStrategy with Product with Serializable

Commit strategy that commits files once ANY of the parameters reaches a threshold value sampled from a given Gaussian distribution. Optionally users can specify a batch size (in records) that triggers file size estimation, as doing it on every record can be too expensive. Note that the class maintains state, so it should not be re-used for multiple sinks.

Linear Supertypes
Serializable, Product, Equals, FileCommitStrategy, AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. FuzzyReachedAnyOf
  2. Serializable
  3. Product
  4. Equals
  5. FileCommitStrategy
  6. AnyRef
  7. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new FuzzyReachedAnyOf(fileOpenDurationDistribution: Option[GaussianDistribution[Duration]] = None, fileSizeDistribution: Option[GaussianDistribution[Long]] = None, recordsWrittenDistribution: Option[GaussianDistribution[Long]] = None, fileSizeSamplingBatchSize: Option[Long] = None)(randomSeed: Option[Int] = None)

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(classOf[java.lang.CloneNotSupportedException]) @native()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. val fileOpenDurationDistribution: Option[GaussianDistribution[Duration]]
  8. val fileSizeDistribution: Option[GaussianDistribution[Long]]
  9. val fileSizeSamplingBatchSize: Option[Long]
  10. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  11. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  12. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  14. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  15. def productElementNames: Iterator[String]
    Definition Classes
    Product
  16. val recordsWrittenDistribution: Option[GaussianDistribution[Long]]
  17. def shouldCommit(currFileOpenDuration: Duration, currFileSize: => Long, currRecords: Long): Boolean

    Checks whether a file should be closed and committed to storage.

    Checks whether a file should be closed and committed to storage.

    returns

    Whether the file should be closed and committed.

    Definition Classes
    FuzzyReachedAnyOf → FileCommitStrategy
  18. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  19. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  20. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  21. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

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 Product

Inherited from Equals

Inherited from FileCommitStrategy

Inherited from AnyRef

Inherited from Any

Ungrouped