Class

org.apache.spark.sql.execution

GenerateExec

Related Doc: package execution

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case class GenerateExec(generator: Generator, join: Boolean, outer: Boolean, output: Seq[Attribute], child: SparkPlan) extends SparkPlan with UnaryExecNode with Product with Serializable

Applies a Generator to a stream of input rows, combining the output of each into a new stream of rows. This operation is similar to a flatMap in functional programming with one important additional feature, which allows the input rows to be joined with their output.

generator

the generator expression

join

when true, each output row is implicitly joined with the input tuple that produced it.

outer

when true, each input row will be output at least once, even if the output of the given generator is empty. outer has no effect when join is false.

output

the output attributes of this node, which constructed in analysis phase, and we can not change it, as the parent node bound with it already.

Linear Supertypes
UnaryExecNode, SparkPlan, Serializable, Serializable, Logging, QueryPlan[SparkPlan], TreeNode[SparkPlan], Product, Equals, AnyRef, Any
Ordering
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Inherited
  1. GenerateExec
  2. UnaryExecNode
  3. SparkPlan
  4. Serializable
  5. Serializable
  6. Logging
  7. QueryPlan
  8. TreeNode
  9. Product
  10. Equals
  11. AnyRef
  12. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new GenerateExec(generator: Generator, join: Boolean, outer: Boolean, output: Seq[Attribute], child: SparkPlan)

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    generator

    the generator expression

    join

    when true, each output row is implicitly joined with the input tuple that produced it.

    outer

    when true, each input row will be output at least once, even if the output of the given generator is empty. outer has no effect when join is false.

    output

    the output attributes of this node, which constructed in analysis phase, and we can not change it, as the parent node bound with it already.

Value Members

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

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  4. lazy val allAttributes: AttributeSeq

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    Definition Classes
    QueryPlan
  5. def apply(number: Int): SparkPlan

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    Definition Classes
    TreeNode
  6. def argString: String

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    Definition Classes
    TreeNode
  7. def asCode: String

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    Definition Classes
    TreeNode
  8. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  9. val boundGenerator: Generator

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  10. lazy val canonicalized: SparkPlan

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    Attributes
    protected
    Definition Classes
    QueryPlan
  11. val child: SparkPlan

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    Definition Classes
    GenerateExecUnaryExecNode
  12. def children: Seq[SparkPlan]

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    Definition Classes
    UnaryExecNode → TreeNode
  13. lazy val cleanArgs: Seq[Any]

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    Attributes
    protected
    Definition Classes
    QueryPlan
  14. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  15. def collect[B](pf: PartialFunction[SparkPlan, B]): Seq[B]

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    Definition Classes
    TreeNode
  16. def collectFirst[B](pf: PartialFunction[SparkPlan, B]): Option[B]

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    Definition Classes
    TreeNode
  17. def collectLeaves(): Seq[SparkPlan]

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    Definition Classes
    TreeNode
  18. lazy val constraints: ExpressionSet

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    Definition Classes
    QueryPlan
  19. lazy val containsChild: Set[TreeNode[_]]

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    Definition Classes
    TreeNode
  20. def doExecute(): RDD[InternalRow]

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    Overridden by concrete implementations of SparkPlan.

    Overridden by concrete implementations of SparkPlan. Produces the result of the query as an RDD[InternalRow]

    Attributes
    protected
    Definition Classes
    GenerateExecSparkPlan
  21. def doExecuteBroadcast[T](): Broadcast[T]

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    Overridden by concrete implementations of SparkPlan.

    Overridden by concrete implementations of SparkPlan. Produces the result of the query as a broadcast variable.

    Attributes
    protected[org.apache.spark.sql]
    Definition Classes
    SparkPlan
  22. def doPrepare(): Unit

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    Overridden by concrete implementations of SparkPlan.

    Overridden by concrete implementations of SparkPlan. It is guaranteed to run before any execute of SparkPlan. This is helpful if we want to set up some state before executing the query, e.g., BroadcastHashJoin uses it to broadcast asynchronously.

    Note: the prepare method has already walked down the tree, so the implementation doesn't need to call children's prepare methods.

    This will only be called once, protected by this.

    Attributes
    protected
    Definition Classes
    SparkPlan
  23. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  24. final def execute(): RDD[InternalRow]

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    Returns the result of this query as an RDD[InternalRow] by delegating to doExecute after preparations.

    Returns the result of this query as an RDD[InternalRow] by delegating to doExecute after preparations.

    Concrete implementations of SparkPlan should override doExecute.

    Definition Classes
    SparkPlan
  25. final def executeBroadcast[T](): Broadcast[T]

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    Returns the result of this query as a broadcast variable by delegating to doExecuteBroadcast after preparations.

    Returns the result of this query as a broadcast variable by delegating to doExecuteBroadcast after preparations.

    Concrete implementations of SparkPlan should override doExecuteBroadcast.

    Definition Classes
    SparkPlan
  26. def executeCollect(): Array[InternalRow]

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    Runs this query returning the result as an array.

    Runs this query returning the result as an array.

    Definition Classes
    SparkPlan
  27. def executeCollectPublic(): Array[Row]

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    Runs this query returning the result as an array, using external Row format.

    Runs this query returning the result as an array, using external Row format.

    Definition Classes
    SparkPlan
  28. final def executeQuery[T](query: ⇒ T): T

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    Execute a query after preparing the query and adding query plan information to created RDDs for visualization.

    Execute a query after preparing the query and adding query plan information to created RDDs for visualization.

    Attributes
    protected
    Definition Classes
    SparkPlan
  29. def executeTake(n: Int): Array[InternalRow]

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    Runs this query returning the first n rows as an array.

    Runs this query returning the first n rows as an array.

    This is modeled after RDD.take but never runs any job locally on the driver.

    Definition Classes
    SparkPlan
  30. def executeToIterator(): Iterator[InternalRow]

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    Runs this query returning the result as an iterator of InternalRow.

    Runs this query returning the result as an iterator of InternalRow.

    Note: this will trigger multiple jobs (one for each partition).

    Definition Classes
    SparkPlan
  31. final def expressions: Seq[Expression]

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    Definition Classes
    QueryPlan
  32. def fastEquals(other: TreeNode[_]): Boolean

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    Definition Classes
    TreeNode
  33. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  34. def find(f: (SparkPlan) ⇒ Boolean): Option[SparkPlan]

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    Definition Classes
    TreeNode
  35. def flatMap[A](f: (SparkPlan) ⇒ TraversableOnce[A]): Seq[A]

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    Definition Classes
    TreeNode
  36. def foreach(f: (SparkPlan) ⇒ Unit): Unit

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    Definition Classes
    TreeNode
  37. def foreachUp(f: (SparkPlan) ⇒ Unit): Unit

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    Definition Classes
    TreeNode
  38. def generateTreeString(depth: Int, lastChildren: Seq[Boolean], builder: StringBuilder, verbose: Boolean, prefix: String): StringBuilder

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    Definition Classes
    TreeNode
  39. val generator: Generator

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    the generator expression

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

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    Definition Classes
    AnyRef → Any
  41. def getNodeNumbered(number: MutableInt): SparkPlan

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    Attributes
    protected
    Definition Classes
    TreeNode
  42. def getRelevantConstraints(constraints: Set[Expression]): Set[Expression]

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    Attributes
    protected
    Definition Classes
    QueryPlan
  43. def hashCode(): Int

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    Definition Classes
    TreeNode → AnyRef → Any
  44. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  45. def innerChildren: Seq[QueryPlan[_]]

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    Attributes
    protected
    Definition Classes
    QueryPlan → TreeNode
  46. def inputSet: AttributeSet

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    Definition Classes
    QueryPlan
  47. final def isDebugEnabled: Boolean

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    Attributes
    protected
    Definition Classes
    Logging
  48. final def isInfoEnabled: Boolean

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    Attributes
    protected
    Definition Classes
    Logging
  49. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  50. final def isTraceEnabled: Boolean

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    Attributes
    protected
    Definition Classes
    Logging
  51. val join: Boolean

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    when true, each output row is implicitly joined with the input tuple that produced it.

  52. def jsonFields: List[JField]

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    Attributes
    protected
    Definition Classes
    TreeNode
  53. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging
  54. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  55. def logDebug(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  56. def logError(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  57. def logError(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  58. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  59. def logInfo(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  60. def logName: String

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    Attributes
    protected
    Definition Classes
    Logging
  61. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  62. def logTrace(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  63. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  64. def logWarning(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  65. def longMetric(name: String): SQLMetric

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    Return a LongSQLMetric according to the name.

    Return a LongSQLMetric according to the name.

    Definition Classes
    SparkPlan
  66. def makeCopy(newArgs: Array[AnyRef]): SparkPlan

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    Overridden make copy also propagates sqlContext to copied plan.

    Overridden make copy also propagates sqlContext to copied plan.

    Definition Classes
    SparkPlan → TreeNode
  67. def map[A](f: (SparkPlan) ⇒ A): Seq[A]

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    Definition Classes
    TreeNode
  68. def mapChildren(f: (SparkPlan) ⇒ SparkPlan): SparkPlan

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    Definition Classes
    TreeNode
  69. def mapProductIterator[B](f: (Any) ⇒ B)(implicit arg0: ClassTag[B]): Array[B]

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    Attributes
    protected
    Definition Classes
    TreeNode
  70. def metadata: Map[String, String]

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    Return all metadata that describes more details of this SparkPlan.

    Return all metadata that describes more details of this SparkPlan.

    Definition Classes
    SparkPlan
  71. lazy val metrics: Map[String, SQLMetric]

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    Return all metrics containing metrics of this SparkPlan.

    Return all metrics containing metrics of this SparkPlan.

    Definition Classes
    GenerateExecSparkPlan
  72. def missingInput: AttributeSet

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    Definition Classes
    QueryPlan
  73. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  74. def newMutableProjection(expressions: Seq[Expression], inputSchema: Seq[Attribute], useSubexprElimination: Boolean = false): MutableProjection

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    Attributes
    protected
    Definition Classes
    SparkPlan
  75. def newNaturalAscendingOrdering(dataTypes: Seq[DataType]): Ordering[InternalRow]

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    Creates a row ordering for the given schema, in natural ascending order.

    Creates a row ordering for the given schema, in natural ascending order.

    Attributes
    protected
    Definition Classes
    SparkPlan
  76. def newOrdering(order: Seq[SortOrder], inputSchema: Seq[Attribute]): Ordering[InternalRow]

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    Attributes
    protected
    Definition Classes
    SparkPlan
  77. def newPredicate(expression: Expression, inputSchema: Seq[Attribute]): (InternalRow) ⇒ Boolean

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    Attributes
    protected
    Definition Classes
    SparkPlan
  78. def nodeName: String

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    Definition Classes
    TreeNode
  79. final def notify(): Unit

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    Definition Classes
    AnyRef
  80. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  81. def numberedTreeString: String

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    Definition Classes
    TreeNode
  82. val origin: Origin

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    Definition Classes
    TreeNode
  83. def otherCopyArgs: Seq[AnyRef]

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    Attributes
    protected
    Definition Classes
    TreeNode
  84. val outer: Boolean

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    when true, each input row will be output at least once, even if the output of the given generator is empty.

    when true, each input row will be output at least once, even if the output of the given generator is empty. outer has no effect when join is false.

  85. val output: Seq[Attribute]

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    the output attributes of this node, which constructed in analysis phase, and we can not change it, as the parent node bound with it already.

    the output attributes of this node, which constructed in analysis phase, and we can not change it, as the parent node bound with it already.

    Definition Classes
    GenerateExec → QueryPlan
  86. def outputOrdering: Seq[SortOrder]

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    Specifies how data is ordered in each partition.

    Specifies how data is ordered in each partition.

    Definition Classes
    SparkPlan
  87. def outputPartitioning: Partitioning

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    Specifies how data is partitioned across different nodes in the cluster.

    Specifies how data is partitioned across different nodes in the cluster.

    Definition Classes
    UnaryExecNodeSparkPlan
  88. def outputSet: AttributeSet

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    Definition Classes
    QueryPlan
  89. final def prepare(): Unit

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    Prepare a SparkPlan for execution.

    Prepare a SparkPlan for execution. It's idempotent.

    Definition Classes
    SparkPlan
  90. def prepareSubqueries(): Unit

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    Finds scalar subquery expressions in this plan node and starts evaluating them.

    Finds scalar subquery expressions in this plan node and starts evaluating them. The list of subqueries are added to subqueryResults.

    Attributes
    protected
    Definition Classes
    SparkPlan
  91. def prettyJson: String

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    Definition Classes
    TreeNode
  92. def printSchema(): Unit

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    Definition Classes
    QueryPlan
  93. def producedAttributes: AttributeSet

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    Definition Classes
    GenerateExec → QueryPlan
  94. def references: AttributeSet

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    Definition Classes
    QueryPlan
  95. def requiredChildDistribution: Seq[Distribution]

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    Specifies any partition requirements on the input data for this operator.

    Specifies any partition requirements on the input data for this operator.

    Definition Classes
    SparkPlan
  96. def requiredChildOrdering: Seq[Seq[SortOrder]]

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    Specifies sort order for each partition requirements on the input data for this operator.

    Specifies sort order for each partition requirements on the input data for this operator.

    Definition Classes
    SparkPlan
  97. def resetMetrics(): Unit

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    Reset all the metrics.

    Reset all the metrics.

    Definition Classes
    SparkPlan
  98. def sameResult(plan: SparkPlan): Boolean

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    Definition Classes
    QueryPlan
  99. lazy val schema: StructType

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    Definition Classes
    QueryPlan
  100. def schemaString: String

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    Definition Classes
    QueryPlan
  101. def simpleString: String

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    Definition Classes
    QueryPlan → TreeNode
  102. def sparkContext: SparkContext

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    Attributes
    protected
    Definition Classes
    SparkPlan
  103. final val sqlContext: SQLContext

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    A handle to the SQL Context that was used to create this plan.

    A handle to the SQL Context that was used to create this plan. Since many operators need access to the sqlContext for RDD operations or configuration this field is automatically populated by the query planning infrastructure.

    Definition Classes
    SparkPlan
  104. def statePrefix: String

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    Attributes
    protected
    Definition Classes
    QueryPlan
  105. def stringArgs: Iterator[Any]

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    Attributes
    protected
    Definition Classes
    TreeNode
  106. val subexpressionEliminationEnabled: Boolean

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    Definition Classes
    SparkPlan
  107. def subqueries: Seq[SparkPlan]

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    Definition Classes
    QueryPlan
  108. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef
  109. def toJSON: String

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    Definition Classes
    TreeNode
  110. def toString(): String

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    Definition Classes
    TreeNode → AnyRef → Any
  111. def transform(rule: PartialFunction[SparkPlan, SparkPlan]): SparkPlan

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    Definition Classes
    TreeNode
  112. def transformAllExpressions(rule: PartialFunction[Expression, Expression]): GenerateExec.this.type

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    Definition Classes
    QueryPlan
  113. def transformChildren(rule: PartialFunction[SparkPlan, SparkPlan], nextOperation: (SparkPlan, PartialFunction[SparkPlan, SparkPlan]) ⇒ SparkPlan): SparkPlan

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    Attributes
    protected
    Definition Classes
    TreeNode
  114. def transformDown(rule: PartialFunction[SparkPlan, SparkPlan]): SparkPlan

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    Definition Classes
    TreeNode
  115. def transformExpressions(rule: PartialFunction[Expression, Expression]): GenerateExec.this.type

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    Definition Classes
    QueryPlan
  116. def transformExpressionsDown(rule: PartialFunction[Expression, Expression]): GenerateExec.this.type

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    Definition Classes
    QueryPlan
  117. def transformExpressionsUp(rule: PartialFunction[Expression, Expression]): GenerateExec.this.type

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    Definition Classes
    QueryPlan
  118. def transformUp(rule: PartialFunction[SparkPlan, SparkPlan]): SparkPlan

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    Definition Classes
    TreeNode
  119. def treeString(verbose: Boolean): String

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    Definition Classes
    TreeNode
  120. def treeString: String

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    Definition Classes
    TreeNode
  121. def validConstraints: Set[Expression]

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    Attributes
    protected
    Definition Classes
    QueryPlan
  122. def verboseString: String

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    Definition Classes
    QueryPlan → TreeNode
  123. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  124. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  125. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  126. def waitForSubqueries(): Unit

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    Blocks the thread until all subqueries finish evaluation and update the results.

    Blocks the thread until all subqueries finish evaluation and update the results.

    Attributes
    protected
    Definition Classes
    SparkPlan
  127. def withNewChildren(newChildren: Seq[SparkPlan]): SparkPlan

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    Definition Classes
    TreeNode

Inherited from UnaryExecNode

Inherited from SparkPlan

Inherited from Serializable

Inherited from Serializable

Inherited from Logging

Inherited from QueryPlan[SparkPlan]

Inherited from TreeNode[SparkPlan]

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Ungrouped