Class

com.datastax.spark.connector.rdd

DseGraphPartitioner

Related Doc: package rdd

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class DseGraphPartitioner[V, T <: Token[V]] extends Partitioner with Logging

A custom partitoner specifically for RDDs made for DseGraph.

The general idea is

For a vertex Determine the ~label property Determine which RDD represents the data in that label Determine the C* token of the vertex given it's label Determine which partition in the found RDD would contain that Token Determine the offset of that RDD's partitions in the UnionRDD Return the partition index added to offset

Linear Supertypes
Logging, Partitioner, Serializable, Serializable, AnyRef, Any
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Inherited
  1. DseGraphPartitioner
  2. Logging
  3. Partitioner
  4. Serializable
  5. Serializable
  6. AnyRef
  7. Any
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Visibility
  1. Public
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Instance Constructors

  1. new DseGraphPartitioner(keyspaceName: String, rdds: Seq[RDD[_]], graphLabels: Seq[String])(implicit connector: CassandraConnector)

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Type Members

  1. type ITR = TokenRangeWithPartitionIndex[V, T]

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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. val LabelAccessor: String

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  5. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  6. def clone(): AnyRef

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

  7. lazy val conf: SparkConf

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    Spark Conf is not Serializable, use it to get a Connector Conf locally *

  8. implicit val connector: CassandraConnector

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

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    Definition Classes
    AnyRef

  10. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  11. def finalize(): Unit

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

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

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    Definition Classes
    AnyRef → Any

  13. def getPartition(key: Any): Int

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    For a given Map based Vertex Key determine which table it belongs to.

    For a given Map based Vertex Key determine which table it belongs to. From this table lookup the correct RDD and the partitioning for that RDD. Once narrowed down generate the Token given the now known table. This token will then be compared against the quick lookup Bucket structure for that RDD. We then add that partition index to the offset for that RDD.

    Triggers the creation of all lazy transient properties

    Definition Classes
    DseGraphPartitioner → Partitioner

  14. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  15. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  16. def isTraceEnabled(): Boolean

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    Attributes
    protected
    Definition Classes
    Logging

  17. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

  24. def logName: String

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Attributes
    protected
    Definition Classes
    Logging

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

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    Definition Classes
    AnyRef

  30. final def notify(): Unit

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    Definition Classes
    AnyRef

  31. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  32. val numPartitions: Int

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    Definition Classes
    DseGraphPartitioner → Partitioner

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

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    Definition Classes
    AnyRef

  34. def toString(): String

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    Definition Classes
    AnyRef → Any

  35. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
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    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Logging

Inherited from Partitioner

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped