org.apache.hadoop.mapred

类 IsolationRunner

java.lang.Object

org.apache.hadoop.mapred.IsolationRunner

public class IsolationRunner
extends Object

IsolationRunner is intended to facilitate debugging by re-running a specific task, given left-over task files for a (typically failed) past job. Currently, it is limited to re-running map tasks. Users may coerce MapReduce to keep task files around by setting keep.failed.task.files. See mapred_tutorial.xml for more documentation.

构造器概要

构造器

构造器和说明
IsolationRunner()

方法概要

方法

限定符和类型	方法和说明
static void	main(String[] args) Run a single task.

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

IsolationRunner

public IsolationRunner()

方法详细资料

main

public static void main(String[] args)
                 throws ClassNotFoundException,
                        IOException,
                        InterruptedException

Run a single task.

参数:

args - the first argument is the task directory

抛出:

ClassNotFoundException

IOException

InterruptedException