I was sent the url to the old velocity stuff and I see several thread
safety issues in the (*really* old) version being used by m-r-r-p.
I checked out the latest version of velocity and all the problems I
found were fixed there, so I think we'll just give it a shot.
Just make an issue under http://jira.codehaus.org/browse/MRRESOURCES and
I'll push it through.
Kristian
Den 23.03.2011 23:29, skrev David Jencks:
I've been trying out the parallel stuff in maven 3.0.3 and when it works it's
great. However I'm wondering what's going on here with this intermittent
error. I've never gotten this error bulding single threaded.
https://cwiki.apache.org/MAVEN/parallel-builds-in-maven-3.html says the
maven-remote-resources-plugin 1.2 is threadsafe. However...
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-remote-resources-plugin:1.2:process (default) on
project assemblies: Error rendering velocity resource. NullPointerException ->
[Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal
org.apache.maven.plugins:maven-remote-resources-plugin:1.2:process (default) on
project assemblies: Error rendering velocity resource.
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at
org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167)
at
org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:164)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
Caused by: org.apache.maven.plugin.MojoExecutionException: Error rendering
velocity resource.
at
org.apache.maven.plugin.resources.remote.ProcessRemoteResourcesMojo.processResourceBundles(ProcessRemoteResourcesMojo.java:1212)
at
org.apache.maven.plugin.resources.remote.ProcessRemoteResourcesMojo.execute(ProcessRemoteResourcesMojo.java:519)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 13 more
Caused by: java.lang.NullPointerException
at
org.apache.velocity.runtime.RuntimeInstance.getTemplate(RuntimeInstance.java:831)
at
org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:440)
at
org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:419)
at
org.apache.maven.plugin.resources.remote.ProcessRemoteResourcesMojo.processResourceBundles(ProcessRemoteResourcesMojo.java:1125)
... 16 more
I ran with -T 4. It looks like there were 3 failures with this same stack
trace all in pom projects that aggregate subprojects.
I don't have a lot of time to track down whats going on but might be able to
spend a little time given enough advice.
thanks
david jencks
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