GraphLab debugging with Eclipse

Here are fresh instructions I got from Young Cha, A graduate student at UCLA on
how to setup Graphlab to work with Eclipse.

1. Installing CDT for Eclipse
(The instructions below uses Eclipse's plug-in install function. There are other ways of installing CDT for Eclipse. Please refer tohttp://eclipse.org/cdt/ for more information)

• In the menu bar, select 'Help' -> 'Install New Software..'
• Click 'Add'
• Type 'CDT' in Name field and http://download.eclipse.org/tools/cdt/releases/galileo in Location field (If you use a different version of Eclipse, please replace 'galileo' with your version ('helios' or 'indigo')
• Check 'CDT Main Features' and 'CDT Optional Features' (You may choose only the modules you need. If you don't know about it, please check all)
• Click 'Next' and install CDT

2. Using Cmake's CDT generator to convert GraphLab into a Eclipse CDT project

• Let's assume that your graphlabapi directory is located in ~/graphlab/graphlabapi and you want to create CDT project at ~/graphlab/cdt_build
• cd ~/graphlab
• mkdir cdt_build
• cd cdt_build
cmake -G"Eclipse CDT4 - Unix Makefiles" -D CMAKE_BUILD_TYPE=Debug ../graphlabapi
• Please refer to http://www.cmake.org/Wiki/Eclipse_CDT4_Generator for more information

3. Importing GraphLab to Eclipse CDT

• In the menu bar, select 'File' -> 'Import..'
• Select 'General' -> 'Existing Projects into Workspace'
• Click 'Next'
• Click ''Browse' and select the 'cdt_build' directory you created previously
• Please refer to http://www.cmake.org/Wiki/Eclipse_CDT4_Generator for more information

Thanks so much Young! Your instructions are going to be very helpful for our other users!

Hadoop/Mahout - setting up a development environment

This post explains how to setup a development environment for Hadoop and Mahout.

Prerequisites:  need to have Mahout and Hadoop sources. (See previous posts).

On a development machine
1) Download Helios version of Eclipse like eclipse-java-helios-SR1-linux-gtk-x86_64.tar.gz
and save it locally. Opem the zip file using:
 tar xvzf *.gz

 2) Install the Map-reduce eclipse plugin

cd eclipse/plugins/

wget https://issues.apache.org/jira/secure/attachment/12460491/hadoop-eclipse-plugin-0.20.3-SNAPSHOT.jar

 3) Follow the directions in
http://m2eclipse.sonatype.org/installing-m2eclipse.html
to install maven plugin in eclipse.

4) Eclipse-> File-> import maven project -> select mahout root dir -> finish
you will see a list of all subprojects. Press OK and wait for compilation to finish.
If everything went smoothly project should compile.

5)Select Map-reduce view -> Map-reduce location tab -> Edit Hadoop locations
In general tab, Add location name (just a name to identify this configuration) and the host and
port for the Map/reduce master (default port 50030 using the EC2 configuration described in previous posts) and DFS master (default port 50070) -> Finish