Associating Hadoop Source to eclipse

Associating Hadoop Source to eclipse

ant:http://archive.apache.org/dist/ant/binaries/

Hadoop:http://archive.apache.org/dist/hadoop/core/

All Versions jdk:http://www.oracle.com/technetwork/java/archive-139210.html

eclipse:http://www.eclipse.org/downloads/

Eclipse Downloads This version:

1. Prepare the software and environment:

The following versions of Ant and Hadoop are used in this article:

Eclipse creates a Java project project.

Ant is the build tool that Apache provides to Java developers, it can run under Windows OS and UNIX OS, it's not only open source but also a very useful tool

2. Copy the core, HDFs, and mapred from the Hadoop-1.2.1 src directory to the Eclipse project:

Three files in Hadoop-1.2.1:

The copy below will be error, because there is no guide packet, so will error:

The fault here is normal, if there is no error, then the problem:

3, the Project Guide package:

Guide Package One:

The jar in the hadoop-1.2.1 root directory is directed into:

Guide Pack II:

Copy the jar in the Lib in the hadoop-1.2.1:

Guide Package III:

Put the jar in the hadoop-1.2.1/lib/jsp-2.1 into the bag:

Guide Pack IV:

Take the jar in the apache-ant-1.9.4 Lib, and note that only one package is being directed:

4. Select the JDK version:

If the computer is not installed jdk1.6 It is best to install one so that eclipse is easy to use.

This example uses the Hadoop version is hadoop-1.2.1, so it is best to use jdk1.6, with the jdk1.8 version may be error.

Double-click JRE systemlibrary[javase-1.6]

Select the previously installed jdk1.6 version:

Click Finish to exit.

5, click on the link Source, in turn, Core, HDFs, mapred three folders in the guide:

When the import is complete, click Remove to delete the HADOOP-1.2.1/SRC:

Click OK to complete:

6. Successful operation:

Take a look at a class code:

Associating Hadoop Source to eclipse