Packages

  • package root
    Definition Classes
    root
  • package com
    Definition Classes
    root
  • package datastax
    Definition Classes
    com
  • package spark
    Definition Classes
    datastax
  • package connector

    The root package of Cassandra connector for Apache Spark.

    The root package of Cassandra connector for Apache Spark. Offers handy implicit conversions that add Cassandra-specific methods to SparkContext and RDD.

    Call cassandraTable method on the SparkContext object to create a CassandraRDD exposing Cassandra tables as Spark RDDs.

    Call RDDFunctions saveToCassandra function on any RDD to save distributed collection to a Cassandra table.

    Example:

    CREATE KEYSPACE test WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1 };
    CREATE TABLE test.words (word text PRIMARY KEY, count int);
    INSERT INTO test.words(word, count) VALUES ("and", 50);
    import com.datastax.spark.connector._
    
    val sparkMasterHost = "127.0.0.1"
    val cassandraHost = "127.0.0.1"
    val keyspace = "test"
    val table = "words"
    
    // Tell Spark the address of one Cassandra node:
    val conf = new SparkConf(true).set("spark.cassandra.connection.host", cassandraHost)
    
    // Connect to the Spark cluster:
    val sc = new SparkContext("spark://" + sparkMasterHost + ":7077", "example", conf)
    
    // Read the table and print its contents:
    val rdd = sc.cassandraTable(keyspace, table)
    rdd.toArray().foreach(println)
    
    // Write two rows to the table:
    val col = sc.parallelize(Seq(("of", 1200), ("the", "863")))
    col.saveToCassandra(keyspace, table)
    
    sc.stop()
    Definition Classes
    spark
  • package rdd

    Contains com.datastax.spark.connector.rdd.CassandraTableScanRDD class that is the main entry point for analyzing Cassandra data from Spark.

    Contains com.datastax.spark.connector.rdd.CassandraTableScanRDD class that is the main entry point for analyzing Cassandra data from Spark.

    Definition Classes
    connector
  • package reader

    Provides components for reading data rows from Cassandra and converting them to objects of desired type.

    Provides components for reading data rows from Cassandra and converting them to objects of desired type. Additionally provides a generic CassandraRow class which can represent any row.

    Definition Classes
    rdd
  • object RowReaderFactory extends LowPriorityRowReaderFactoryImplicits
    Definition Classes
    reader
  • GenericRowReader$
  • IsSingleColumnType

implicit object GenericRowReader$ extends RowReader[CassandraRow] with ThisRowReaderAsFactory[CassandraRow]

Default RowReader: reads a Row into serializable CassandraRow

Linear Supertypes
ThisRowReaderAsFactory[CassandraRow], RowReaderFactory[CassandraRow], RowReader[CassandraRow], Serializable, Serializable, AnyRef, Any
Ordering
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Inherited
  1. GenericRowReader$
  2. ThisRowReaderAsFactory
  3. RowReaderFactory
  4. RowReader
  5. Serializable
  6. Serializable
  7. AnyRef
  8. Any
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Visibility
  1. Public
  2. All

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. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  9. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  10. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  11. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  12. def neededColumns: Option[Seq[ColumnRef]]

    List of columns this RowReader is going to read.

    List of columns this RowReader is going to read. Useful to avoid fetching the columns that are not needed.

    Definition Classes
    GenericRowReader$RowReader
  13. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  14. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  15. def read(row: Row, rowMetaData: CassandraRowMetadata): CassandraRow

    Reads column values from low-level Row and turns them into higher level representation.

    Reads column values from low-level Row and turns them into higher level representation.

    row

    row fetched from Cassandra

    rowMetaData

    column names and codec available in the row

    Definition Classes
    GenericRowReader$RowReader
  16. def rowReader(table: TableDef, selectedColumns: IndexedSeq[ColumnRef]): RowReader[CassandraRow]
  17. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  18. def targetClass: Class[CassandraRow]
    Definition Classes
    GenericRowReader$RowReaderFactory
  19. def toString(): String
    Definition Classes
    AnyRef → Any
  20. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  21. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  22. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated @deprecated
    Deprecated

    (Since version ) see corresponding Javadoc for more information.

Inherited from ThisRowReaderAsFactory[CassandraRow]

Inherited from RowReaderFactory[CassandraRow]

Inherited from RowReader[CassandraRow]

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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