io.ray.streaming.python.stream

类 PythonKeyDataStream

java.lang.Object

io.ray.streaming.api.stream.Stream<PythonDataStream,Object>

io.ray.streaming.python.stream.PythonDataStream

io.ray.streaming.python.stream.PythonKeyDataStream

所有已实现的接口:

PythonStream, Serializable

public class PythonKeyDataStream
extends PythonDataStream
implements PythonStream

Represents a python DataStream returned by a key-by operation.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
PythonKeyDataStream(DataStream referencedStream) Create a python stream that reference passed python stream.
PythonKeyDataStream(PythonDataStream input, PythonOperator pythonOperator)

方法概要

限定符和类型	方法和说明
KeyDataStream<Object,Object>	asJavaStream() Convert this stream as a java stream.
PythonDataStream	reduce(PythonFunction func) Apply a reduce function to this stream.
PythonDataStream	reduce(String moduleName, String funcName)

从类继承的方法 io.ray.streaming.python.stream.PythonDataStream

broadcast, filter, filter, flatMap, flatMap, getLanguage, keyBy, keyBy, map, map, partitionBy, sink, sink, union, union

从类继承的方法 io.ray.streaming.api.stream.Stream

disableChain, forward, getConfig, getId, getInputStream, getOperator, getOriginalStream, getParallelism, getPartition, getStreamingContext, isProxyStream, setParallelism, setPartition, withChainStrategy, withConfig, withConfig

从类继承的方法 java.lang.Object

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

构造器详细资料

PythonKeyDataStream

public PythonKeyDataStream(PythonDataStream input,
                           PythonOperator pythonOperator)

PythonKeyDataStream

public PythonKeyDataStream(DataStream referencedStream)

Create a python stream that reference passed python stream. Changes in new stream will be reflected in referenced stream and vice versa

方法详细资料

reduce

public PythonDataStream reduce(String moduleName,
                               String funcName)

reduce

public PythonDataStream reduce(PythonFunction func)

Apply a reduce function to this stream.

参数:

func - The reduce function.

返回:

A new DataStream.

asJavaStream

public KeyDataStream<Object,Object> asJavaStream()

Convert this stream as a java stream. The converted stream and this stream are the same logical stream, which has same stream id. Changes in converted stream will be reflected in this stream and vice versa.

覆盖:

asJavaStream 在类中 PythonDataStream