Packages

trait CustomMetric extends AnyRef

A custom metric. Data source can define supported custom metrics using this interface. During query execution, Spark will collect the task metrics using CustomTaskMetric and combine the metrics at the driver side. How to combine task metrics is defined by the metric class with the same metric name.

Annotations
@Evolving()
Since

3.2.0

Linear Supertypes
AnyRef, Any
Known Subclasses
CustomAvgMetric, CustomSumMetric
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Visibility
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  2. Protected

Abstract Value Members

  1. abstract def aggregateTaskMetrics(taskMetrics: Array[Long]): String

    Given an array of task metric values, returns aggregated final metric value.

  2. abstract def description(): String

    Returns the description of custom metric.

  3. abstract def name(): String

    Returns the name of custom metric.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  8. def finalize(): Unit
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  9. final def getClass(): Class[_ <: AnyRef]
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  10. def hashCode(): Int
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  12. final def ne(arg0: AnyRef): Boolean
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  13. final def notify(): Unit
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  18. final def wait(arg0: Long, arg1: Int): Unit
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  19. final def wait(arg0: Long): Unit
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