Experience with Hudson - Building matrix project

Question

Anyone tried that feature and has some feedback? Or anyone know some useful samples to lookup ?

Answer 1

Hello,

I have tried this feature some months ago, but I don't use it anymore (just because I don't need it, not because it is not a good feature).

Basically, you define n Axis, each axis is a property with several values.

Let's go with an example: you define the Axis "JDK", with possible value "1.4", "1.5", "1.6", and you define another property "database", where possible values are "oracle", "mysql".

Thus, Hudson will launch your build 6 times:

• with JDK 1.4, with the property database=oracle (i.e. the JVM is launched with -Ddatabase=oracle)
• with JDK 1.5, with the property database=oracle
• with JDK 1.6, with the property database=oracle
• with JDK 1.4, with the property database=mysql
• with JDK 1.5, with the property database=mysql
• with JDK 1.6, with the property database=mysql

Then, once everything is finished, you will be able to see the results for each iteration.

This feature may be really usefull when you need to test your application in several environments (in my example, with different versions of JDK or database).

Note that except for the JDK axis, you have to manage by yourself the property given as entry by Hudson. In my example, the application must take into account the "database" property itself. Eventually, a good idea is to use this property to enable a particular profile in the Maven2 configuration, if you project is mavenized (see here for more details about that).

I hope my explanations are clear enough :)