Packages

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. Protected

Type Members

  1. implicit class LogStringContext extends AnyRef
    Definition Classes
    Logging
  2. class MaintenanceTask extends AnyRef

    Runs the task periodically and bubbles any exceptions that it encounters.

    Runs the task periodically and bubbles any exceptions that it encounters.

    Note: exceptions in the maintenance thread pool are caught and logged; the associated StateStoreProvider is also unloaded. Any exception that happens in the MaintenanceTask is indeed exceptional and thus we let it propagate.

  3. class MaintenanceThreadPool extends AnyRef

    Thread Pool that runs maintenance on partitions that are scheduled by MaintenanceTask periodically

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. val DEFAULT_COL_FAMILY_NAME: String
  5. val PARTITION_ID_TO_CHECK_SCHEMA: Int
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  10. def get(storeProviderId: StateStoreProviderId, keySchema: StructType, valueSchema: StructType, keyStateEncoderSpec: KeyStateEncoderSpec, version: Long, stateStoreCkptId: Option[String], stateSchemaBroadcast: Option[StateSchemaBroadcast], useColumnFamilies: Boolean, storeConf: StateStoreConf, hadoopConf: Configuration, useMultipleValuesPerKey: Boolean = false): StateStore

    Get or create a store associated with the id.

  11. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  12. def getReadOnly(storeProviderId: StateStoreProviderId, keySchema: StructType, valueSchema: StructType, keyStateEncoderSpec: KeyStateEncoderSpec, version: Long, stateStoreCkptId: Option[String], stateSchemaBroadcast: Option[StateSchemaBroadcast], useColumnFamilies: Boolean, storeConf: StateStoreConf, hadoopConf: Configuration, useMultipleValuesPerKey: Boolean = false): ReadStateStore

    Get or create a read-only store associated with the id.

  13. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  14. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  15. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  16. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  17. def isLoaded(storeProviderId: StateStoreProviderId): Boolean

    Whether a state store provider is loaded or not

  18. def isMaintenanceRunning: Boolean

    Check if maintenance thread is running and scheduled future is not done

  19. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  20. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  21. def logDebug(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  22. def logDebug(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  23. def logDebug(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  24. def logDebug(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  25. def logError(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  26. def logError(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  27. def logError(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  28. def logError(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  29. def logInfo(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  30. def logInfo(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  31. def logInfo(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  32. def logInfo(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  33. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  34. def logTrace(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  35. def logTrace(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  36. def logTrace(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  37. def logTrace(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  38. def logWarning(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  39. def logWarning(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  40. def logWarning(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  41. def logWarning(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  42. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  43. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  44. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  45. def stop(): Unit

    Unload and stop all state store providers

  46. def stopMaintenanceTask(): Unit

    Stop maintenance thread and reset the maintenance task

  47. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  48. def toString(): String
    Definition Classes
    AnyRef → Any
  49. def unload(storeProviderId: StateStoreProviderId): Unit

    Unload a state store provider

  50. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  51. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  52. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  53. def withLogContext(context: Map[String, String])(body: => Unit): Unit
    Attributes
    protected
    Definition Classes
    Logging

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 Logging

Inherited from AnyRef

Inherited from Any

Ungrouped