Spark 3.4.0 ScalaDoc < Back

Packages

package root

Definition Classes
root
package org

Definition Classes
root
package apache

Definition Classes
org
package spark
Core Spark functionality.
Core Spark functionality. org.apache.spark.SparkContext serves as the main entry point to Spark, while org.apache.spark.rdd.RDD is the data type representing a distributed collection, and provides most parallel operations.
In addition, org.apache.spark.rdd.PairRDDFunctions contains operations available only on RDDs of key-value pairs, such as groupByKey and join; org.apache.spark.rdd.DoubleRDDFunctions contains operations available only on RDDs of Doubles; and org.apache.spark.rdd.SequenceFileRDDFunctions contains operations available on RDDs that can be saved as SequenceFiles. These operations are automatically available on any RDD of the right type (e.g. RDD[(Int, Int)] through implicit conversions.
Java programmers should reference the org.apache.spark.api.java package for Spark programming APIs in Java.
Classes and methods marked with Experimental are user-facing features which have not been officially adopted by the Spark project. These are subject to change or removal in minor releases.
Classes and methods marked with Developer API are intended for advanced users want to extend Spark through lower level interfaces. These are subject to changes or removal in minor releases.

Definition Classes
apache
package sql
Allows the execution of relational queries, including those expressed in SQL using Spark.
Allows the execution of relational queries, including those expressed in SQL using Spark.

Definition Classes
spark
package api
Contains API classes that are specific to a single language (i.e.
Contains API classes that are specific to a single language (i.e. Java).

Definition Classes
sql
package avro

Definition Classes
sql
package catalog

Definition Classes
sql
package columnar

Definition Classes
sql
package expressions

Definition Classes
sql
package jdbc

Definition Classes
sql
package sources
A set of APIs for adding data sources to Spark SQL.
A set of APIs for adding data sources to Spark SQL.

Definition Classes
sql
package streaming

Definition Classes
sql
package types
Contains a type system for attributes produced by relations, including complex types like structs, arrays and maps.
Contains a type system for attributes produced by relations, including complex types like structs, arrays and maps.

Definition Classes
sql
package util

Definition Classes
sql
package vectorized

Definition Classes
sql
AnalysisException
Column
ColumnName
CreateTableWriter
DataFrameNaFunctions
DataFrameReader
DataFrameStatFunctions
DataFrameWriter
DataFrameWriterV2
Dataset
DatasetHolder
Encoder
Encoders
ExperimentalMethods
ForeachWriter
KeyValueGroupedDataset
LowPrioritySQLImplicits
Observation
RelationalGroupedDataset
Row
RowFactory
RuntimeConfig
SQLContext
SQLImplicits
SaveMode
SparkSession
SparkSessionExtensions
SparkSessionExtensionsProvider
TypedColumn
UDFRegistration
WriteConfigMethods
functions

org.apache.spark.sql

SQLContext

Companion class SQLContext

object SQLContext extends Serializable

This SQLContext object contains utility functions to create a singleton SQLContext instance, or to get the created SQLContext instance.

It also provides utility functions to support preference for threads in multiple sessions scenario, setActive could set a SQLContext for current thread, which will be returned by getOrCreate instead of the global one.

Source: SQLContext.scala

Linear Supertypes

Serializable, Serializable, AnyRef, Any

Ordering

Alphabetic
By Inheritance

Inherited

SQLContext
Serializable
Serializable
AnyRef
Any

Hide All
Show All

Visibility

Public
All

Value Members

final def !=(arg0: Any): Boolean

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

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

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( ... ) @native()
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
Annotations
@native()
def hashCode(): Int

Definition Classes
AnyRef → Any
Annotations
@native()
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
Annotations
@native()
final def notifyAll(): Unit

Definition Classes
AnyRef
Annotations
@native()
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

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

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

Definition Classes
AnyRef
Annotations
@throws( ... ) @native()

Deprecated Value Members

def clearActive(): Unit
Clears the active SQLContext for current thread.
Clears the active SQLContext for current thread. Subsequent calls to getOrCreate will return the first created context instead of a thread-local override.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) Use SparkSession.clearActiveSession instead
Since
1.6.0
def getOrCreate(sparkContext: SparkContext): SQLContext
Get the singleton SQLContext if it exists or create a new one using the given SparkContext.
Get the singleton SQLContext if it exists or create a new one using the given SparkContext.
This function can be used to create a singleton SQLContext object that can be shared across the JVM.
If there is an active SQLContext for current thread, it will be returned instead of the global one.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) Use SparkSession.builder instead
Since
1.5.0
def setActive(sqlContext: SQLContext): Unit
Changes the SQLContext that will be returned in this thread and its children when SQLContext.getOrCreate() is called.
Changes the SQLContext that will be returned in this thread and its children when SQLContext.getOrCreate() is called. This can be used to ensure that a given thread receives a SQLContext with an isolated session, instead of the global (first created) context.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) Use SparkSession.setActiveSession instead
Since
1.6.0

Packages

SQLContext

Companion class SQLContext

object SQLContext extends Serializable

Value Members

Deprecated Value Members

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped

Packages

SQLContext 

Companion class SQLContext

object SQLContext extends Serializable

Value Members

Deprecated Value Members

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped

SQLContext