Dear list, 

I am trying to upgrade an existing and working continuum 1.2.3 install towards 
1.3.6. To do this, I have followed the upgrade procedure 
(http://continuum.apache.org/docs/1.3.6/installation/upgrade.html) to the 
letter. When starting the new continuum, all projects are there, but I cannot 
build anything. All projects fail with this error: 

org.codehaus.plexus.taskqueue.execution.TaskExecutionException: Error executing 
action 'execute-builder' 
at 
org.apache.maven.continuum.buildcontroller.DefaultBuildController.performAction(DefaultBuildController.java:415)
 
at 
org.apache.maven.continuum.buildcontroller.DefaultBuildController.build(DefaultBuildController.java:157)
 
at 
org.apache.maven.continuum.buildcontroller.BuildProjectTaskExecutor.executeTask(BuildProjectTaskExecutor.java:48)
 
at 
org.apache.continuum.taskqueueexecutor.ParallelBuildsThreadedTaskQueueExecutor$ExecutorRunnable$1.run(ParallelBuildsThreadedTaskQueueExecutor.java:12
 
0) 
at 
edu.emory.mathcs.backport.java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442)
 
at 
edu.emory.mathcs.backport.java.util.concurrent.FutureTask.run(FutureTask.java:176)
 
at 
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987)
 
at 
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528)
 
at java.lang.Thread.run(Thread.java:595) 
Caused by: org.apache.maven.continuum.ContinuumException: No such executor: 
'maven2'. 
at 
org.apache.maven.continuum.execution.manager.DefaultBuildExecutorManager.getBuildExecutor(DefaultBuildExecutorManager.java:84)
 
at 
org.apache.maven.continuum.core.action.ExecuteBuilderContinuumAction.execute(ExecuteBuilderContinuumAction.java:96)
 
at 
org.apache.maven.continuum.buildcontroller.DefaultBuildController.performAction(DefaultBuildController.java:393)
 
... 8 more 

This probably means the executors map in DefaultBuildExecutorManager is empty. 
When starting continuum, it even warns me there are no executors available: 
2011-02-02 11:33:59,652 [WrapperSimpleAppMain] WARN 
org.apache.maven.continuum.execution.manager.DefaultBuildExecutorManager - No 
build executors defined. 

I thought this had something to with the migration, but the same warning 
appears when doing a fresh (= empty data folders) install. This warning appears 
in 1.3.6 and I even tried 1.3.5, same thing. In 1.4.0 I don't get this warning. 

There is even a Unit test in your continuum-core, throwing the same exception 
as the one mentioned above (PrepareBuildProjectsTaskExecutorTest), which I find 
very disturbing. 

Can someone please help me getting Continuum 1.3.6 alive? 


regards, 

Kenneth 

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