Packages

c

org.apache.spark.sql.execution

OptimizeMetadataOnlyQuery

case class OptimizeMetadataOnlyQuery(catalog: SessionCatalog) extends Rule[LogicalPlan] with Product with Serializable

This rule optimizes the execution of queries that can be answered by looking only at partition-level metadata. This applies when all the columns scanned are partition columns, and the query has an aggregate operator that satisfies the following conditions: 1. aggregate expression is partition columns. e.g. SELECT col FROM tbl GROUP BY col. 2. aggregate function on partition columns with DISTINCT. e.g. SELECT col1, count(DISTINCT col2) FROM tbl GROUP BY col1. 3. aggregate function on partition columns which have same result w or w/o DISTINCT keyword. e.g. SELECT col1, Max(col2) FROM tbl GROUP BY col1.

Linear Supertypes
Serializable, Product, Equals, Rule[LogicalPlan], Logging, SQLConfHelper, AnyRef, Any
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Inherited
  1. OptimizeMetadataOnlyQuery
  2. Serializable
  3. Product
  4. Equals
  5. Rule
  6. Logging
  7. SQLConfHelper
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new OptimizeMetadataOnlyQuery(catalog: SessionCatalog)

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
    OptimizeMetadataOnlyQuery → Rule
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. val catalog: SessionCatalog
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  8. def conf: SQLConf
    Definition Classes
    SQLConfHelper
  9. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  10. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  11. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  13. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  16. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  17. def logDebug(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  18. def logDebug(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  19. def logError(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  20. def logError(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  21. def logInfo(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  22. def logInfo(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  23. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  24. def logTrace(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  25. def logTrace(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  26. def logWarning(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  27. def logWarning(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  28. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  29. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  30. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  31. def productElementNames: Iterator[String]
    Definition Classes
    Product
  32. lazy val ruleId: RuleId
    Attributes
    protected
    Definition Classes
    Rule
  33. val ruleName: String
    Definition Classes
    Rule
  34. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  35. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  36. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  37. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  38. object PartitionedRelation extends PredicateHelper

    A pattern that finds the partitioned table relation node inside the given plan, and returns a pair of the partition attributes and the table relation node.

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from Rule[LogicalPlan]

Inherited from Logging

Inherited from SQLConfHelper

Inherited from AnyRef

Inherited from Any

Ungrouped