Object/Trait

org.apache.spark.sql.execution.streaming.state

StateStore

Related Docs: trait StateStore | package state

Permalink

object StateStore extends Logging

Companion object to StateStore that provides helper methods to create and retrieve stores by their unique ids. In addition, when a SparkContext is active (i.e. SparkEnv.get is not null), it also runs a periodic background task to do maintenance on the loaded stores. For each store, it uses the StateStoreCoordinator to ensure whether the current loaded instance of the store is the active instance. Accordingly, it either keeps it loaded and performs maintenance, or unloads the store.

Linear Supertypes
Logging, AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. StateStore
  2. Logging
  3. AnyRef
  4. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Type Members

  1. class MaintenanceTask extends AnyRef

    Permalink

    Runs the task periodically and automatically cancels it if there is an exception.

    Runs the task periodically and automatically cancels it if there is an exception. onError will be called when an exception happens.

Value Members

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

    Permalink
    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

    Permalink
    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

    Permalink
    Definition Classes
    AnyRef → Any

  4. val MAINTENANCE_INTERVAL_CONFIG: String

    Permalink

  5. val MAINTENANCE_INTERVAL_DEFAULT_SECS: Int

    Permalink

  6. final def asInstanceOf[T0]: T0

    Permalink
    Definition Classes
    Any

  7. def clone(): AnyRef

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

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

    Permalink
    Definition Classes
    AnyRef

  9. def equals(arg0: Any): Boolean

    Permalink
    Definition Classes
    AnyRef → Any

  10. def finalize(): Unit

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

  11. def get(storeId: StateStoreId, keySchema: StructType, valueSchema: StructType, version: Long, storeConf: StateStoreConf, hadoopConf: Configuration): StateStore

    Permalink

    Get or create a store associated with the id.

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

    Permalink
    Definition Classes
    AnyRef → Any

  13. def hashCode(): Int

    Permalink
    Definition Classes
    AnyRef → Any

  14. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

  15. final def isInstanceOf[T0]: Boolean

    Permalink
    Definition Classes
    Any

  16. def isLoaded(storeId: StateStoreId): Boolean

    Permalink

    Whether a state store provider is loaded or not

  17. def isMaintenanceRunning: Boolean

    Permalink

  18. def isTraceEnabled(): Boolean

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

  19. def log: Logger

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

  26. def logName: String

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Attributes
    protected
    Definition Classes
    Logging

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

    Permalink
    Definition Classes
    AnyRef

  32. final def notify(): Unit

    Permalink
    Definition Classes
    AnyRef

  33. final def notifyAll(): Unit

    Permalink
    Definition Classes
    AnyRef

  34. def stop(): Unit

    Permalink

    Unload and stop all state store providers

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

    Permalink
    Definition Classes
    AnyRef

  36. def toString(): String

    Permalink
    Definition Classes
    AnyRef → Any

  37. def unload(storeId: StateStoreId): Unit

    Permalink

    Unload a state store provider

  38. final def wait(): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Logging

Inherited from AnyRef

Inherited from Any

Ungrouped