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The main thing is to do a zip package of source files. And then attach it to eclipse to be OK.

I. Environmental description

System: Ubuntu 14.04 32 bit
Jdk:javac 1.7.0_75
Eclipse version::3.8.1
Hadoop version:2.4.1

Second, download and unzip the source code 1, download

: http://pan.baidu.com/s/1jGCGL98
Extract Password: Brup

2. Create a Directory

young@young-Lenovo-G470:~$ mkdir hadoop-srcyoung@young-Lenovo-G470:~$ cd hadoop-srcyoung@young-Lenovo-G470:~/hadoop-src$ mkdir org && mkdir org/apache && mkdir org/apache/hadoop

Copy the hadoop-2.4.1-src.tar.gz to the ~/HADOOP-SRC directory.

3. Decompression

young@young-Lenovo-G470:~/hadoop-src$ tar -xvf hadoop-2.4.1-src.tar.gzyoung@young-Lenovo-G470:~/hadoop-src$ lshadoop-2.4.1-src  hadoop-2.4.1-src.tar.gz  org

Third, packaging source

Because the source of Hadoop at this time is more dispersed, we will need to set up the source code into a. zip file attached to eclipse.
Copy some of the source code in the HADOOP-2.4.1-SRC (here only the MapReduce and HDFs related source code) to Org/apache/hadoop.

Young@young-Lenovo-G470: ~/hadoop-src$ Cp-r ~/hadoop-src/hadoop-2.4.1-src/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/ hadoop/* Org/apache/hadoop/young@young-Lenovo-G470: ~/hadoop-src$ Cp-r ~/hadoop-src/hadoop-2.4.1-src/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/* Org/apache/hadoop/young@young-Lenovo-G470: ~/hadoop-src$ Zip-r Hadoop-src.zip./org

Iv. Attaching to eclipse

Open Eclipse, right-click a project, build path, Configure build path, Add External JARs
Find the hadoop-src.zip that you just packed, check, OK.

V. Testing

Open a Hadoop project that contains the Reducer class, hold down CTRL, and click Reducer. If normal, you can see the beautiful source code.

Attachment

The following is my own good zip package, basically a complete Hadoop2.4.1 source package.
: HTTP://PAN.BAIDU.COM/S/1BNB9JTL
Extract Password: 3pmy

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