Class

org.apache.spark.sql.delta.sources

DeltaSource

Related Doc: package sources

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case class DeltaSource(spark: SparkSession, deltaLog: DeltaLog, options: DeltaOptions, filters: Seq[Expression] = Nil) extends Source with DeltaLogging with Product with Serializable

A streaming source for a Delta table.

When a new stream is started, delta starts by constructing a org.apache.spark.sql.delta.Snapshot at the current version of the table. This snapshot is broken up into batches until all existing data has been processed. Subsequent processing is done by tailing the change log looking for new data. This results in the streaming query returning the same answer as a batch query that had processed the entire dataset at any given point.

Linear Supertypes
Serializable, Serializable, Product, Equals, DeltaLogging, DatabricksLogging, DeltaProgressReporter, Logging, Source, BaseStreamingSource, AnyRef, Any
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Inherited
  1. DeltaSource
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. DeltaLogging
  7. DatabricksLogging
  8. DeltaProgressReporter
  9. Logging
  10. Source
  11. BaseStreamingSource
  12. AnyRef
  13. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new DeltaSource(spark: SparkSession, deltaLog: DeltaLog, options: DeltaOptions, filters: Seq[Expression] = Nil)

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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. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  5. def clone(): AnyRef

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

  6. def commit(end: Offset): Unit

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    Definition Classes
    Source

  7. val deltaLog: DeltaLog

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

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    Definition Classes
    AnyRef

  9. val filters: Seq[Expression]

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  10. def finalize(): Unit

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

  11. def getBatch(start: Option[Offset], end: Offset): DataFrame

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    Definition Classes
    DeltaSource → Source

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

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    Definition Classes
    AnyRef → Any

  13. def getOffset: Option[Offset]

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    Definition Classes
    DeltaSource → Source

  14. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean

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    Attributes
    protected
    Definition Classes
    Logging

  15. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  16. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  17. def isTraceEnabled(): Boolean

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    Attributes
    protected
    Definition Classes
    Logging

  18. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging

  19. def logConsole(line: String): Unit

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    Definition Classes
    DatabricksLogging

  20. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  21. def logDebug(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  22. def logError(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  23. def logError(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  24. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  25. def logInfo(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  26. def logName: String

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    Attributes
    protected
    Definition Classes
    Logging

  27. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  28. def logTrace(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  29. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging

  30. def logWarning(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Definition Classes
    AnyRef

  32. final def notify(): Unit

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    Definition Classes
    AnyRef

  33. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  34. val options: DeltaOptions

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  35. def recordDeltaEvent(deltaLog: DeltaLog, opType: String, tags: Map[TagDefinition, String] = Map.empty, data: AnyRef = null): Unit

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    Used to record the occurrence of a single event or report detailed, operation specific statistics.

    Used to record the occurrence of a single event or report detailed, operation specific statistics.

    Attributes
    protected
    Definition Classes
    DeltaLogging

  36. def recordDeltaOperation[A](deltaLog: DeltaLog, opType: String, tags: Map[TagDefinition, String] = Map.empty)(thunk: ⇒ A): A

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    Used to report the duration as well as the success or failure of an operation.

    Used to report the duration as well as the success or failure of an operation.

    Attributes
    protected
    Definition Classes
    DeltaLogging

  37. def recordEvent(metric: MetricDefinition, additionalTags: Map[TagDefinition, String] = Map.empty, blob: String = null, trimBlob: Boolean = true): Unit

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    Definition Classes
    DatabricksLogging

  38. def recordOperation[S](opType: OpType, opTarget: String = null, extraTags: Map[TagDefinition, String], isSynchronous: Boolean = true, alwaysRecordStats: Boolean = false, allowAuthTags: Boolean = false, killJvmIfStuck: Boolean = false, outputMetric: MetricDefinition = null, silent: Boolean = true)(thunk: ⇒ S): S

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    Definition Classes
    DatabricksLogging

  39. def recordUsage(metric: MetricDefinition, quantity: Double, additionalTags: Map[TagDefinition, String] = Map.empty, blob: String = null, forceSample: Boolean = false, trimBlob: Boolean = true, silent: Boolean = false): Unit

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    Definition Classes
    DatabricksLogging

  40. val schema: StructType

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    Definition Classes
    DeltaSource → Source

  41. val spark: SparkSession

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  42. def stop(): Unit

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    Definition Classes
    DeltaSource → Source → BaseStreamingSource

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

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    Definition Classes
    AnyRef

  44. def toString(): String

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    Definition Classes
    DeltaSource → AnyRef → Any

  45. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  48. def withStatusCode[T](statusCode: String, defaultMessage: String, data: Map[String, Any] = Map.empty)(body: ⇒ T): T

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    Report a log to indicate some command is running.

    Report a log to indicate some command is running.

    Definition Classes
    DeltaProgressReporter

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from DeltaLogging

Inherited from DatabricksLogging

Inherited from DeltaProgressReporter

Inherited from Logging

Inherited from Source

Inherited from BaseStreamingSource

Inherited from AnyRef

Inherited from Any

Ungrouped