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org.apache.spark.sql.delta.commands.optimize

ZCubeFileStatsCollector

class ZCubeFileStatsCollector extends AnyRef

ZCube file statistics collector. An object of this class can be used to collect ZCube statistics. The file statistics collection can be started by initializing an object of this class and calling updateStats on every new file seen. The number of ZCubes, number of files from matching cubes and number of unoptimized files are captured here.

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Instance Constructors

  1. new ZCubeFileStatsCollector(zOrderBy: Seq[String], isFull: Boolean)

    zOrderBy

    zOrder or clustering columns.

    isFull

    whether OPTIMIZE FULL is run. This is only for clustered tables.

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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  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: Any): Boolean
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  8. def fileStats: Map[String, (Int, Long)]
  9. final def getClass(): Class[_]
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  10. def hashCode(): Int
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  11. final def isInstanceOf[T0]: Boolean
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  13. final def notify(): Unit
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  14. final def notifyAll(): Unit
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  15. var numZCubes: Int

    number of distinct zCubes seen so far

  16. final def synchronized[T0](arg0: ⇒ T0): T0
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  17. def toString(): String
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  18. def updateStats(file: AddFile): AddFile

    method to update the zCubeFileStats incrementally by file

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