Compile Hadoop Trunk on Ubuntu

Prerequisites

Install JDK
How to Install Oracle Java7 in Ubuntu Server 14.04 LTS

Install Maven
Install Maven on Ubuntu

Check if the ProtocolBuffers already installed?
protoc --version

Install ProtocolBuffers
sudo apt-get install protobuf-compiler  

Check the version
protoc --version

if the version does not display try following command.
sudo ldconfig
protoc --version

I have downloaded the "hadoop-trunk.zip" from Git Hub. 

if you want after the extract copy the  hadoop-trunk directory to your project working area.

sudo cp -r hadoop-trunk /home/mahesh/projects/hadoop/hadoop-trunk


Change the ownership of the hadoop-trunk direcoty to you. This should be done with '-R' (Recursive)
sudo chown -R mahesh hadoop-trunk

Compile  Hadoop
mvn install -DskipTests








If everything goes well you should see "BUILD SUCCESSFUL" message. Build would take a while to complete depending on you Internet connection speed, since Maven will download all the required artifacts in the first build.

 

mvn eclipse:eclipse -DdownloadSources=true -DdownloadJavadocs=true