trait PrepareDeltaScanBase extends Rule[LogicalPlan] with PredicateHelper with DeltaLogging

Before query planning, we prepare any scans over delta tables by pushing any projections or filters in allowing us to gather more accurate statistics for CBO and metering.

Note the following - This rule also ensures that all reads from the same delta log use the same snapshot of log thus providing snapshot isolation. - If this rule is invoked within an active OptimisticTransaction, then the scans are generated using the transaction.

Self Type
PrepareDeltaScan
Linear Supertypes
DeltaLogging, DatabricksLogging, DeltaProgressReporter, PredicateHelper, AliasHelper, Rule[LogicalPlan], Logging, SQLConfHelper, AnyRef, Any
Known Subclasses
PrepareDeltaScan
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Inherited
  1. PrepareDeltaScanBase
  2. DeltaLogging
  3. DatabricksLogging
  4. DeltaProgressReporter
  5. PredicateHelper
  6. AliasHelper
  7. Rule
  8. Logging
  9. SQLConfHelper
  10. AnyRef
  11. Any
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Visibility
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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. def apply(_plan: LogicalPlan): LogicalPlan
    Definition Classes
    PrepareDeltaScanBase → Rule
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def buildBalancedPredicate(expressions: Seq[Expression], op: (Expression, Expression) => Expression): Expression
    Attributes
    protected
    Definition Classes
    PredicateHelper
  7. def canEvaluate(expr: Expression, plan: LogicalPlan): Boolean
    Attributes
    protected
    Definition Classes
    PredicateHelper
  8. def canEvaluateWithinJoin(expr: Expression): Boolean
    Attributes
    protected
    Definition Classes
    PredicateHelper
  9. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  10. def conf: SQLConf
    Definition Classes
    SQLConfHelper
  11. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  12. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  13. def extractPredicatesWithinOutputSet(condition: Expression, outputSet: AttributeSet): Option[Expression]
    Attributes
    protected
    Definition Classes
    PredicateHelper
  14. def filesForScan(scanGenerator: DeltaScanGenerator, limitOpt: Option[Int], projection: Seq[Attribute], filters: Seq[Expression], delta: LogicalRelation): DeltaScan

    Scan files using the given filters and return DeltaScan.

    Scan files using the given filters and return DeltaScan.

    Attributes
    protected
  15. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  16. def findExpressionAndTrackLineageDown(exp: Expression, plan: LogicalPlan): Option[(Expression, LogicalPlan)]
    Definition Classes
    PredicateHelper
  17. def getAliasMap(exprs: Seq[NamedExpression]): AttributeMap[Alias]
    Attributes
    protected
    Definition Classes
    AliasHelper
  18. def getAliasMap(plan: Aggregate): AttributeMap[Alias]
    Attributes
    protected
    Definition Classes
    AliasHelper
  19. def getAliasMap(plan: Project): AttributeMap[Alias]
    Attributes
    protected
    Definition Classes
    AliasHelper
  20. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  21. def getDeltaScanGenerator(index: TahoeLogFileIndex): DeltaScanGenerator

    Gets the DeltaScanGenerator for the given log, which will be used to generate DeltaScans.

    Gets the DeltaScanGenerator for the given log, which will be used to generate DeltaScans. Every time this method is called on a log within the lifetime of this rule (i.e., the lifetime of the query for which this rule was instantiated), the returned generator will read a snapshot that is pinned on the first access for that log.

    Internally, it will use the snapshot of the file index, the snapshot of the active transaction (if any), or the latest snapshot of the given log.

    Attributes
    protected
  22. def getPreparedIndex(preparedScan: DeltaScan, fileIndex: TahoeLogFileIndex): PreparedDeltaFileIndex

    Helper method to generate a PreparedDeltaFileIndex

    Helper method to generate a PreparedDeltaFileIndex

    Attributes
    protected
  23. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  24. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  25. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  26. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  27. def isNullIntolerant(expr: Expression): Boolean
    Attributes
    protected
    Definition Classes
    PredicateHelper
  28. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  29. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  30. def logConsole(line: String): Unit
    Definition Classes
    DatabricksLogging
  31. def logDebug(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  32. def logDebug(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  33. def logError(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  34. def logError(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  35. def logInfo(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  36. def logInfo(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  37. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  38. def logTrace(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  39. def logTrace(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  40. def logWarning(msg: => String, throwable: Throwable): 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
    @native()
  44. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  45. def optimizeGeneratedColumns(scannedSnapshot: Snapshot, scan: LogicalPlan, preparedIndex: PreparedDeltaFileIndex, filters: Seq[Expression], limit: Option[Int], delta: LogicalRelation): LogicalPlan
    Attributes
    protected
  46. def outputWithNullability(output: Seq[Attribute], nonNullAttrExprIds: Seq[ExprId]): Seq[Attribute]
    Attributes
    protected
    Definition Classes
    PredicateHelper
  47. def prepareDeltaScan(plan: LogicalPlan): LogicalPlan

    Prepares delta scans sequentially.

    Prepares delta scans sequentially.

    Attributes
    protected
  48. def recordDeltaEvent(deltaLog: DeltaLog, opType: String, tags: Map[TagDefinition, String] = Map.empty, data: AnyRef = null, path: Option[Path] = None): Unit

    Used to record the occurrence of a single event or report detailed, operation specific statistics.

    Used to record the occurrence of a single event or report detailed, operation specific statistics.

    path

    Used to log the path of the delta table when deltaLog is null.

    Attributes
    protected
    Definition Classes
    DeltaLogging
  49. def recordDeltaOperation[A](deltaLog: DeltaLog, opType: String, tags: Map[TagDefinition, String] = Map.empty)(thunk: => A): A

    Used to report the duration as well as the success or failure of an operation on a deltaLog.

    Used to report the duration as well as the success or failure of an operation on a deltaLog.

    Attributes
    protected
    Definition Classes
    DeltaLogging
  50. def recordDeltaOperationForTablePath[A](tablePath: String, opType: String, tags: Map[TagDefinition, String] = Map.empty)(thunk: => A): A

    Used to report the duration as well as the success or failure of an operation on a tahoePath.

    Used to report the duration as well as the success or failure of an operation on a tahoePath.

    Attributes
    protected
    Definition Classes
    DeltaLogging
  51. def recordEvent(metric: MetricDefinition, additionalTags: Map[TagDefinition, String] = Map.empty, blob: String = null, trimBlob: Boolean = true): Unit
    Definition Classes
    DatabricksLogging
  52. def recordFrameProfile[T](group: String, name: String)(thunk: => T): T
    Attributes
    protected
    Definition Classes
    DeltaLogging
  53. def recordOperation[S](opType: OpType, opTarget: String = null, extraTags: Map[TagDefinition, String], isSynchronous: Boolean = true, alwaysRecordStats: Boolean = false, allowAuthTags: Boolean = false, killJvmIfStuck: Boolean = false, outputMetric: MetricDefinition = null, silent: Boolean = true)(thunk: => S): S
    Definition Classes
    DatabricksLogging
  54. def recordProductEvent(metric: MetricDefinition with CentralizableMetric, additionalTags: Map[TagDefinition, String] = Map.empty, blob: String = null, trimBlob: Boolean = true): Unit
    Definition Classes
    DatabricksLogging
  55. def recordProductUsage(metric: MetricDefinition with CentralizableMetric, quantity: Double, additionalTags: Map[TagDefinition, String] = Map.empty, blob: String = null, forceSample: Boolean = false, trimBlob: Boolean = true, silent: Boolean = false): Unit
    Definition Classes
    DatabricksLogging
  56. def recordUsage(metric: MetricDefinition, quantity: Double, additionalTags: Map[TagDefinition, String] = Map.empty, blob: String = null, forceSample: Boolean = false, trimBlob: Boolean = true, silent: Boolean = false): Unit
    Definition Classes
    DatabricksLogging
  57. def replaceAlias(expr: Expression, aliasMap: AttributeMap[Alias]): Expression
    Attributes
    protected
    Definition Classes
    AliasHelper
  58. def replaceAliasButKeepName(expr: NamedExpression, aliasMap: AttributeMap[Alias]): NamedExpression
    Attributes
    protected
    Definition Classes
    AliasHelper
  59. lazy val ruleId: RuleId
    Attributes
    protected
    Definition Classes
    Rule
  60. val ruleName: String
    Definition Classes
    Rule
  61. def splitConjunctivePredicates(condition: Expression): Seq[Expression]
    Attributes
    protected
    Definition Classes
    PredicateHelper
  62. def splitDisjunctivePredicates(condition: Expression): Seq[Expression]
    Attributes
    protected
    Definition Classes
    PredicateHelper
  63. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  64. def toString(): String
    Definition Classes
    AnyRef → Any
  65. def trimAliases(e: Expression): Expression
    Attributes
    protected
    Definition Classes
    AliasHelper
  66. def trimNonTopLevelAliases[T <: Expression](e: T): T
    Attributes
    protected
    Definition Classes
    AliasHelper
  67. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  68. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  69. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  70. def withDmqTag[T](thunk: => T): T
    Attributes
    protected
    Definition Classes
    DeltaLogging
  71. def withStatusCode[T](statusCode: String, defaultMessage: String, data: Map[String, Any] = Map.empty)(body: => T): T

    Report a log to indicate some command is running.

    Report a log to indicate some command is running.

    Definition Classes
    DeltaProgressReporter
  72. object DeltaTableScan

    This is an extractor object.

    This is an extractor object. See https://docs.scala-lang.org/tour/extractor-objects.html.

Inherited from DeltaLogging

Inherited from DatabricksLogging

Inherited from DeltaProgressReporter

Inherited from PredicateHelper

Inherited from AliasHelper

Inherited from Rule[LogicalPlan]

Inherited from Logging

Inherited from SQLConfHelper

Inherited from AnyRef

Inherited from Any

Ungrouped