The parallelization technique that we just discussed works on the module level. If you really do intend to skip your test goals during your Maven build, then the most common property that the majority plugins respect is: -DskipTests=true However, you can achieve faster build times without damaging your feedback loop that much. The most common practice is to disable the tests when you’re just interested in building your artifacts, but we cannot recommend such a non-conventional engineering practice. Running Maven Tests in ParallelĪn aspect of build which probably has the biggest impact on your build speed are the tests. Your development machine probably has spare computing power and speeding up the build is always useful. Using one thread per CPU core is a good default. While it might happen that your project is not easy to build in parallel it’s worth trying, the speedup can be substantial. Mvn -T 1C install - will use 1 thread per available CPU core
You can either specify the exact number of threads to use for building your project or use a portable version of the parameter and specify the number of thread in terms of CPUs available on the machine. Often you can command Maven to analyze your project including the dependency graph and build the project in parallel where possible. However, often your project setup does not require it to be sequential. It builds all modules sequentially rather than in parallel.
Parallel Builds in Mavenīy default, Maven does not utilize the full power of your hardware. Here are five tips for troubleshooting slow Maven builds.
Or at least it will line up your thoughts to help figure out how to improve it. So, if you’re one of those people who counts the seconds in a slow Maven build, keep reading, this should help you. In the next five sections, I try to explain some of the most common reasons as to why Maven build is taking longer than it should and figure out how it can be improved. Perhaps you use Maven as your a build tool of choice?
An example of such an annoyance might be the build time of your project. You now have a measure of how annoying this can feel. Multiply that by 10 add 5, divide by 2 and square it. Time seems to stop and every second feels like an eternity. It’s particularly painful, when you have little or no control over the thing you’re waiting for. We often dream that things will run faster, or happen sooner than they do so they’re not as annoying. Learn more in this blog > What Is Maven? 4 Tips for Troubleshooting Slow Maven Builds Allowing transparent migration to new features.Ĭommon issues with Maven can include dependency conflict, cache resolution, and, as we talk about below, slow build times.Providing guidelines for best practices development.It boasts features that range from easy project and module creation to a large repository of libraries and metadata for out-of-the-box usability. Maven, or MVN, is a powerful software project management tool used in the Java development environment to manage and build projects as well asa to maintain dependencies. In this article, we look at the popular Java build tool, Apache Maven, and give five tips on how to speed up Maven for Java developers. But first, let's get some background on MVN.