org.apache.spark.sql.catalyst.optimizer

CostBasedJoinReorder

case class CostBasedJoinReorder(conf: SQLConf) extends Rule[LogicalPlan] with PredicateHelper with Product with Serializable

Cost-based join reorder. We may have several join reorder algorithms in the future. This class is the entry of these algorithms, and chooses which one to use.

Linear Supertypes
Serializable, Serializable, Product, Equals, PredicateHelper, Rule[LogicalPlan], Logging, AnyRef, Any
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Inherited
  1. CostBasedJoinReorder
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. PredicateHelper
  7. Rule
  8. Logging
  9. AnyRef
  10. Any
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Instance Constructors

  1. new CostBasedJoinReorder(conf: SQLConf)

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  6. def apply(plan: LogicalPlan): LogicalPlan

    Definition Classes
    CostBasedJoinReorder → Rule

  7. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  8. def canEvaluate(expr: Expression, plan: LogicalPlan): Boolean

    Returns true if expr can be evaluated using only the output of plan.

    Returns true if expr can be evaluated using only the output of plan. This method can be used to determine when it is acceptable to move expression evaluation within a query plan.

    For example consider a join between two relations R(a, b) and S(c, d).

    - canEvaluate(EqualTo(a,b), R) returns true - canEvaluate(EqualTo(a,c), R) returns false - canEvaluate(Literal(1), R) returns true as literals CAN be evaluated on any plan

    Attributes
    protected
    Definition Classes
    PredicateHelper

  9. def canEvaluateWithinJoin(expr: Expression): Boolean

    Returns true iff expr could be evaluated as a condition within join.

    Returns true iff expr could be evaluated as a condition within join.

    Attributes
    protected
    Definition Classes
    PredicateHelper

  10. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  11. val conf: SQLConf

  12. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  13. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  14. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  15. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

    Attributes
    protected
    Definition Classes
    Logging

  16. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  17. def isTraceEnabled(): Boolean

    Attributes
    protected
    Definition Classes
    Logging

  18. def log: Logger

    Attributes
    protected
    Definition Classes
    Logging

  19. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging

  20. def logDebug(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging

  21. def logError(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging

  22. def logError(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging

  23. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging

  24. def logInfo(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging

  25. def logName: String

    Attributes
    protected
    Definition Classes
    Logging

  26. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging

  27. def logTrace(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging

  28. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging

  29. def logWarning(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging

  30. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  31. final def notify(): Unit

    Definition Classes
    AnyRef

  32. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  33. def replaceAlias(condition: Expression, aliases: AttributeMap[Expression]): Expression

    Attributes
    protected
    Definition Classes
    PredicateHelper

  34. val ruleName: String

    Name for this rule, automatically inferred based on class name.

    Name for this rule, automatically inferred based on class name.

    Definition Classes
    Rule

  35. def splitConjunctivePredicates(condition: Expression): Seq[Expression]

    Attributes
    protected
    Definition Classes
    PredicateHelper

  36. def splitDisjunctivePredicates(condition: Expression): Seq[Expression]

    Attributes
    protected
    Definition Classes
    PredicateHelper

  37. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  38. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  39. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  40. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from PredicateHelper

Inherited from Rule[LogicalPlan]

Inherited from Logging

Inherited from AnyRef

Inherited from Any

Ungrouped