chatting with jdcryans on IRC, it appears 'mvn ... assembly:directory' is SLOOOW. and sure it enough, it's running like molasses.
A couple of observations including some random thread-dumping , looks like Maven does a fair number of process forks to get file attributes, you can see the hideousness here:
A bit of research I came across this issue with the Maven Assembly plugin. http://jira.codehaus.org/browse/MASSEMBLY-424 Because the current pom doesn't specify a plugin version, it's using the latest version. By configuring the plugin version to be <version>2.2-beta-1</version> we get much faster builds, at the slight expense of now having the directory ending in '.dir'. Supposedly this is a subtle change in the beta plugins, see the definition of a attribute 'ignoreDirFormatExtensions' here: http://maven.apache.org/plugins/maven-assembly-plugin/directory-mojo.html I would also recommend stripping out the 2 <descriptorRefs> in the assembly plugin definition (for 'project' and 'src'); they're not needed now, and were put therefor discussion more than anything else, I think they're just getting in the way at the moment. so, in short, I propose this diff to keep us going forward: diff --git a/pom.xml b/pom.xml index d70dd70..026431c 100644 --- a/pom.xml +++ b/pom.xml @@ -293,6 +293,7 @@ <plugins> <plugin> <artifactId>maven-assembly-plugin</artifactId> + <version>2.2-beta-1</version> <!-- THIS might not be doable <executions> <execution> @@ -308,10 +309,6 @@ <descriptors> <descriptor>src/assembly/bin.xml</descriptor> </descriptors> - <descriptorRefs> - <descriptorRef>src</descriptorRef> - <descriptorRef>project</descriptorRef> - </descriptorRefs> </configuration> </plugin> </plugins> let me know how you go. Paul
