RateSourceProvider

A source that generates increment long values with timestamps. Each generated row has two columns: a timestamp column for the generated time and an auto increment long column starting with 0L.

This source supports the following options:

rowsPerSecond (e.g. 100, default: 1): How many rows should be generated per second.
rampUpTime (e.g. 5s, default: 0s): How long to ramp up before the generating speed becomes rowsPerSecond. Using finer granularities than seconds will be truncated to integer seconds.
numPartitions (e.g. 10, default: Spark's default parallelism): The partition number for the generated rows. The source will try its best to reach rowsPerSecond, but the query may be resource constrained, and numPartitions can be tweaked to help reach the desired speed.

Linear Supertypes

DataSourceRegister, StreamSourceProvider, AnyRef, Any

Instance Constructors

new RateSourceProvider()

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[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def createSource(sqlContext: SQLContext, metadataPath: String, schema: Option[StructType], providerName: String, parameters: Map[String, String]): Source

Definition Classes
RateSourceProvider → StreamSourceProvider
Since
2.0.0
final def eq(arg0: AnyRef): Boolean

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

Definition Classes
AnyRef → Any
def finalize(): Unit

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

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

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

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def shortName(): String

The string that represents the format that this data source provider uses.
The string that represents the format that this data source provider uses. This is overridden by children to provide a nice alias for the data source. For example:
```
override def shortName(): String = "parquet"
```
Definition Classes
RateSourceProvider → DataSourceRegister
Since
1.5.0
def sourceSchema(sqlContext: SQLContext, schema: Option[StructType], providerName: String, parameters: Map[String, String]): (String, StructType)

Returns the name and schema of the source that can be used to continually read data.
Returns the name and schema of the source that can be used to continually read data.

Definition Classes
RateSourceProvider → StreamSourceProvider
Since
2.0.0
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( ... )

Related Docs: object RateSourceProvider | package streaming

class RateSourceProvider extends StreamSourceProvider with DataSourceRegister

Instance Constructors

new RateSourceProvider()

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

def createSource(sqlContext: SQLContext, metadataPath: String, schema: Option[StructType], providerName: String, parameters: Map[String, String]): Source

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def shortName(): String

def sourceSchema(sqlContext: SQLContext, schema: Option[StructType], providerName: String, parameters: Map[String, String]): (String, StructType)

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

def toString(): String

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Inherited from DataSourceRegister

Inherited from StreamSourceProvider

Inherited from AnyRef

Inherited from Any

Ungrouped