Packages

object StreamingContext extends Logging

StreamingContext object contains a number of utility functions related to the StreamingContext class.

Annotations
@deprecated
Deprecated

(Since version Spark 3.4.0) DStream is deprecated. Migrate to Structured Streaming.

Source
StreamingContext.scala
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Logging, AnyRef, Any
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Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws( ... ) @native() @IntrinsicCandidate()
  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: Any): Boolean
    Definition Classes
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  8. def getActive(): Option[StreamingContext]

    Get the currently active context, if there is one.

    Get the currently active context, if there is one. Active means started but not stopped.

  9. def getActiveOrCreate(checkpointPath: String, creatingFunc: () ⇒ StreamingContext, hadoopConf: Configuration = SparkHadoopUtil.get.conf, createOnError: Boolean = false): StreamingContext

    Either get the currently active StreamingContext (that is, started but not stopped), OR recreate a StreamingContext from checkpoint data in the given path.

    Either get the currently active StreamingContext (that is, started but not stopped), OR recreate a StreamingContext from checkpoint data in the given path. If checkpoint data does not exist in the provided, then create a new StreamingContext by calling the provided creatingFunc.

    checkpointPath

    Checkpoint directory used in an earlier StreamingContext program

    creatingFunc

    Function to create a new StreamingContext

    hadoopConf

    Optional Hadoop configuration if necessary for reading from the file system

    createOnError

    Optional, whether to create a new StreamingContext if there is an error in reading checkpoint data. By default, an exception will be thrown on error.

  10. def getActiveOrCreate(creatingFunc: () ⇒ StreamingContext): StreamingContext

    Either return the "active" StreamingContext (that is, started but not stopped), or create a new StreamingContext that is

    Either return the "active" StreamingContext (that is, started but not stopped), or create a new StreamingContext that is

    creatingFunc

    Function to create a new StreamingContext

  11. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  12. def getOrCreate(checkpointPath: String, creatingFunc: () ⇒ StreamingContext, hadoopConf: Configuration = SparkHadoopUtil.get.conf, createOnError: Boolean = false): StreamingContext

    Either recreate a StreamingContext from checkpoint data or create a new StreamingContext.

    Either recreate a StreamingContext from checkpoint data or create a new StreamingContext. If checkpoint data exists in the provided checkpointPath, then StreamingContext will be recreated from the checkpoint data. If the data does not exist, then the StreamingContext will be created by called the provided creatingFunc.

    checkpointPath

    Checkpoint directory used in an earlier StreamingContext program

    creatingFunc

    Function to create a new StreamingContext

    hadoopConf

    Optional Hadoop configuration if necessary for reading from the file system

    createOnError

    Optional, whether to create a new StreamingContext if there is an error in reading checkpoint data. By default, an exception will be thrown on error.

  13. def hashCode(): Int
    Definition Classes
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    Annotations
    @native() @IntrinsicCandidate()
  14. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
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  15. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
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  16. final def isInstanceOf[T0]: Boolean
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  17. def isTraceEnabled(): Boolean
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    Logging
  18. def jarOfClass(cls: Class[_]): Option[String]

    Find the JAR from which a given class was loaded, to make it easy for users to pass their JARs to StreamingContext.

  19. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  20. def logDebug(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  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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    protected
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    Logging
  23. def logError(msg: ⇒ String): Unit
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    protected
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  24. def logInfo(msg: ⇒ String, throwable: Throwable): Unit
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  25. def logInfo(msg: ⇒ String): Unit
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    Logging
  26. def logName: String
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    Logging
  27. def logTrace(msg: ⇒ String, throwable: Throwable): Unit
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    protected
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    Logging
  28. def logTrace(msg: ⇒ String): Unit
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    protected
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  29. def logWarning(msg: ⇒ String, throwable: Throwable): Unit
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    protected
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  30. def logWarning(msg: ⇒ String): Unit
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    protected
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    Logging
  31. final def ne(arg0: AnyRef): Boolean
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  32. final def notify(): Unit
    Definition Classes
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    Annotations
    @native() @IntrinsicCandidate()
  33. final def notifyAll(): Unit
    Definition Classes
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    @native() @IntrinsicCandidate()
  34. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
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  35. def toString(): String
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  36. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  37. final def wait(arg0: Long): Unit
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    @throws( ... ) @native()
  38. final def wait(): Unit
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    @throws( ... )

Deprecated Value Members

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

Inherited from Logging

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