org.apache.flink.api.java.operators

类 DataSink<T>

java.lang.Object

org.apache.flink.api.java.operators.DataSink<T>

类型参数:

T -

@Public
public class DataSink<T>
extends Object

An operation that allows storing data results.

构造器概要

构造器

构造器和说明
DataSink(DataSet<T> data, org.apache.flink.api.common.io.OutputFormat<T> format, org.apache.flink.api.common.typeinfo.TypeInformation<T> type)

方法概要

限定符和类型	方法和说明
DataSet<T>	getDataSet()
org.apache.flink.api.common.io.OutputFormat<T>	getFormat()
org.apache.flink.api.common.operators.ResourceSpec	getMinResources() Returns the minimum resources of this data sink.
int	getParallelism() Returns the parallelism of this data sink.
org.apache.flink.configuration.Configuration	getParameters()
org.apache.flink.api.common.operators.ResourceSpec	getPreferredResources() Returns the preferred resources of this data sink.
org.apache.flink.api.common.typeinfo.TypeInformation<T>	getType()
DataSink<T>	name(String name)
DataSink<T>	setParallelism(int parallelism) Sets the parallelism for this data sink.
DataSink<T>	sortLocalOutput(int field, org.apache.flink.api.common.operators.Order order) 已过时。 Use DataSet.sortPartition(int, Order) instead
DataSink<T>	sortLocalOutput(String fieldExpression, org.apache.flink.api.common.operators.Order order) 已过时。 Use DataSet.sortPartition(String, Order) instead
String	toString()
protected org.apache.flink.api.common.operators.GenericDataSinkBase<T>	translateToDataFlow(org.apache.flink.api.common.operators.Operator<T> input)
DataSink<T>	withParameters(org.apache.flink.configuration.Configuration parameters) Pass a configuration to the OutputFormat.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

DataSink

public DataSink(DataSet<T> data,
                org.apache.flink.api.common.io.OutputFormat<T> format,
                org.apache.flink.api.common.typeinfo.TypeInformation<T> type)

方法详细资料

getFormat

@Internal
public org.apache.flink.api.common.io.OutputFormat<T> getFormat()

getType

@Internal
public org.apache.flink.api.common.typeinfo.TypeInformation<T> getType()

getDataSet

@Internal
public DataSet<T> getDataSet()

withParameters

public DataSink<T> withParameters(org.apache.flink.configuration.Configuration parameters)

Pass a configuration to the OutputFormat.

参数:

parameters - Configuration parameters

sortLocalOutput

@Deprecated
 @PublicEvolving
public DataSink<T> sortLocalOutput(int field,
                                                                org.apache.flink.api.common.operators.Order order)

已过时。 Use DataSet.sortPartition(int, Order) instead

Sorts each local partition of a Tuple data set on the specified field in the specified Order before it is emitted by the output format.

Note: Only tuple data sets can be sorted using integer field indices.

The tuple data set can be sorted on multiple fields in different orders by chaining sortLocalOutput(int, Order) calls.

参数:

field - The Tuple field on which the data set is locally sorted.

order - The Order in which the specified Tuple field is locally sorted.

返回:

This data sink operator with specified output order.

另请参阅:

Tuple, Order

sortLocalOutput

@Deprecated
 @PublicEvolving
public DataSink<T> sortLocalOutput(String fieldExpression,
                                                                org.apache.flink.api.common.operators.Order order)

已过时。 Use DataSet.sortPartition(String, Order) instead

Sorts each local partition of a data set on the field(s) specified by the field expression in the specified Order before it is emitted by the output format.

Note: Non-composite types can only be sorted on the full element which is specified by a wildcard expression ("*" or "_").

Data sets of composite types (Tuple or Pojo) can be sorted on multiple fields in different orders by chaining sortLocalOutput(String, Order) calls.

参数:

fieldExpression - The field expression for the field(s) on which the data set is locally sorted.

order - The Order in which the specified field(s) are locally sorted.

返回:

This data sink operator with specified output order.

另请参阅:

Order

getParameters

public org.apache.flink.configuration.Configuration getParameters()

返回:

Configuration for the OutputFormat.

name

public DataSink<T> name(String name)

translateToDataFlow

protected org.apache.flink.api.common.operators.GenericDataSinkBase<T> translateToDataFlow(org.apache.flink.api.common.operators.Operator<T> input)

toString

public String toString()

覆盖:

toString 在类中 Object

getParallelism

public int getParallelism()

Returns the parallelism of this data sink.

返回:

The parallelism of this data sink.

setParallelism

public DataSink<T> setParallelism(int parallelism)

Sets the parallelism for this data sink. The degree must be 1 or more.

参数:

parallelism - The parallelism for this data sink. A value equal to ExecutionConfig.PARALLELISM_DEFAULT will use the system default.

返回:

This data sink with set parallelism.

getMinResources

@PublicEvolving
public org.apache.flink.api.common.operators.ResourceSpec getMinResources()

Returns the minimum resources of this data sink. If no minimum resources have been set, this returns the default resource profile.

返回:

The minimum resources of this data sink.

getPreferredResources

@PublicEvolving
public org.apache.flink.api.common.operators.ResourceSpec getPreferredResources()

Returns the preferred resources of this data sink. If no preferred resources have been set, this returns the default resource profile.

返回:

The preferred resources of this data sink.