com.aliyun.odps.pipeline

Class Pipeline.ReduceNode

java.lang.Object

com.aliyun.odps.pipeline.Pipeline.TransformNode

com.aliyun.odps.pipeline.Pipeline.ReduceNode

Enclosing class:

Pipeline

public static class Pipeline.ReduceNode
extends Pipeline.TransformNode

Reducer节点

Constructor Summary

Constructors

Constructor and Description
Pipeline.ReduceNode(Class<? extends Reducer> reducer) 定义一个Reducer节点

Method Summary

Methods

Modifier and Type	Method and Description
Class<? extends Reducer>	getTransformClass() 获取节点对应的Mapper或Reducer class定义

Methods inherited from class com.aliyun.odps.pipeline.Pipeline.TransformNode

getInputGroupingColumns, getInputKeyComparatorClass, getInputKeyGroupingComparatorClass, getInputKeySchema, getInputValueSchema, getMemoryForJVM, getMemoryForTask, getNextNode, getNumTasks, getOutputGroupingColumns, getOutputKeyComparatorClass, getOutputKeyGroupingComparatorClass, getOutputKeySchema, getOutputKeySortColumns, getOutputKeySortOrder, getOutputValueSchema, getPartitionColumns, getPartitionerClass, getPreviousNode, getType, setMemoryForJVM, setMemoryForTask, setNextNode, setNumTasks, setOutputGroupingColumns, setOutputKeyComparatorClass, setOutputKeyGroupingComparatorClass, setOutputKeySchema, setOutputKeySortColumns, setOutputKeySortOrder, setOutputValueSchema, setPartitionColumns, setPartitionerClass, setPreviousNode

Methods inherited from class java.lang.Object

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

Constructor Detail

Pipeline.ReduceNode

public Pipeline.ReduceNode(Class<? extends Reducer> reducer)

定义一个Reducer节点

Parameters:

reducer - class定义

Method Detail

getTransformClass

public Class<? extends Reducer> getTransformClass()

Description copied from class: Pipeline.TransformNode

获取节点对应的Mapper或Reducer class定义

Specified by:

getTransformClass in class Pipeline.TransformNode

Returns: