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org.apache.spark.sql.execution.streaming

ListStateMetricsImpl

trait ListStateMetricsImpl extends AnyRef

Trait that provides helper methods to maintain metrics for a list state. For list state, we keep track of the count of entries in the list in a separate column family to get an accurate view of the number of entries that are updated/removed from the list and reported as part of the query progress metrics.

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Abstract Value Members

  1. abstract def baseStateName: String
  2. abstract def exprEncSchema: StructType
  3. abstract def stateStore: StateStore

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  8. final def getClass(): Class[_ <: AnyRef]
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  9. def getEntryCount(encodedKey: UnsafeRow): Long

    Function to get the number of entries in the list state for a given grouping key

    Function to get the number of entries in the list state for a given grouping key

    encodedKey

    - encoded grouping key

    returns

    - number of entries in the list state

  10. def hashCode(): Int
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  14. final def notifyAll(): Unit
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  15. def removeEntryCount(encodedKey: UnsafeRow): Unit

    Function to remove the number of entries in the list state for a given grouping key

    Function to remove the number of entries in the list state for a given grouping key

    encodedKey

    - encoded grouping key

  16. final def synchronized[T0](arg0: => T0): T0
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  17. def toString(): String
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  18. def updateEntryCount(encodedKey: UnsafeRow, updatedCount: Long): Unit

    Function to update the number of entries in the list state for a given grouping key

    Function to update the number of entries in the list state for a given grouping key

    encodedKey

    - encoded grouping key

    updatedCount

    - updated count of entries in the list state

  19. final def wait(arg0: Long, arg1: Int): Unit
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  1. def finalize(): Unit
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    Deprecated

    (Since version 9)

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