Packages

c

org.apache.spark.sql.delta.files

DeltaSourceSnapshot

class DeltaSourceSnapshot extends SnapshotIterator with StateCache

Converts a Snapshot into the initial set of files read when starting a new streaming query. The list of files that represent the table at the time the query starts are selected by: - Adding version and index to each file to enable splitting of the initial state into multiple batches. - Filtering files that don't match partition predicates, while preserving the aforementioned indexing.

Linear Supertypes
StateCache, SnapshotIterator, AnyRef, Any
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Inherited
  1. DeltaSourceSnapshot
  2. StateCache
  3. SnapshotIterator
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new DeltaSourceSnapshot(spark: SparkSession, snapshot: Snapshot, filters: Seq[Expression])

Type Members

  1. class CachedDS[A] extends AnyRef
    Definition Classes
    StateCache

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 cacheDS[A](ds: Dataset[A], name: String): CachedDS[A]

    Create a CachedDS instance for the given Dataset and the name.

    Create a CachedDS instance for the given Dataset and the name.

    Definition Classes
    StateCache
  6. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  7. def close(unpersistSnapshot: Boolean): Unit
    Definition Classes
    DeltaSourceSnapshot → SnapshotIterator
  8. lazy val dataFilters: Seq[Expression]
    Attributes
    protected
  9. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  10. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  11. val filters: Seq[Expression]
  12. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  13. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  14. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  15. def initialFiles: Dataset[IndexedFile]
    Attributes
    protected
  16. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  17. def iterator(): Iterator[IndexedFile]
    Definition Classes
    SnapshotIterator
  18. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  19. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  20. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  21. lazy val partitionFilters: Seq[Expression]
    Attributes
    protected
  22. val path: Path
    Attributes
    protected
  23. val snapshot: Snapshot
  24. val spark: SparkSession
    Definition Classes
    DeltaSourceSnapshot → StateCache
  25. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  26. def toString(): String
    Definition Classes
    AnyRef → Any
  27. def uncache(): Unit

    Drop any cached data for this Snapshot.

    Drop any cached data for this Snapshot.

    Definition Classes
    StateCache
  28. val version: Long
    Attributes
    protected
  29. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  30. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  31. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Inherited from StateCache

Inherited from SnapshotIterator

Inherited from AnyRef

Inherited from Any

Ungrouped