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Showing content from https://hadoop.apache.org/docs/r1.2.1/api/org/apache/hadoop/mapred/IsolationRunner.html below:

IsolationRunner (Hadoop 1.2.1 API)

org.apache.hadoop.mapred
Class IsolationRunner

java.lang.Object
  org.apache.hadoop.mapred.IsolationRunner

public class IsolationRunner
extends Object
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.

Method Summary static void main(String[] args)
Run a single task. Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait IsolationRunner

public IsolationRunner()

main

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

Run a single task.

Parameters:: args - the first argument is the task directory
Throws:: ClassNotFoundException; IOException; InterruptedException

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