Have 2 ears A and Z, A has a dependency (jboss-all) on Z, A has a singleton, startup scheduler, if I redeploy Z, A redeploys and fails with IllegalStateException:

16:40:05,470 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-6) MSC000001: Failed to start service jboss.deployment.subunit."jboss-javaee-sampletimer.ear"."jboss-javaee-sampletimer-ejb.jar".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.subunit."jboss-javaee-sampletimer.ear"."jboss-javaee-sampletimer-ejb.jar".INSTALL: JBAS018733: Failed to process phase INSTALL of subdeployment "jboss-javaee-sampletimer-ejb.jar" of deployment "jboss-javaee-sampletimer.ear"
	at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:184) [jboss-as-server-7.5.16.Final-redhat-1.jar:7.5.16.Final-redhat-1]
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2064) [jboss-msc-1.1.7.SP1-redhat-1.jar:1.1.7.SP1-redhat-1]
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1987) [jboss-msc-1.1.7.SP1-redhat-1.jar:1.1.7.SP1-redhat-1]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_79]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_79]
	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_79]
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: JBAS014186: Failed to install management resources for ScheduleExample
	at org.jboss.as.ejb3.deployment.processors.EjbManagementDeploymentUnitProcessor.deploy(EjbManagementDeploymentUnitProcessor.java:82)
	at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:177) [jboss-as-server-7.5.16.Final-redhat-1.jar:7.5.16.Final-redhat-1]
	... 5 more
Caused by: java.lang.IllegalStateException
	at org.jboss.as.server.deployment.DeploymentModelUtils.getOrCreate(DeploymentModelUtils.java:100) [jboss-as-server-7.5.16.Final-redhat-1.jar:7.5.16.Final-redhat-1]
	at org.jboss.as.server.deployment.DeploymentModelUtils.createDeploymentSubModel(DeploymentModelUtils.java:81) [jboss-as-server-7.5.16.Final-redhat-1.jar:7.5.16.Final-redhat-1]
	at org.jboss.as.server.deployment.DeploymentUnitImpl.createDeploymentSubModel(DeploymentUnitImpl.java:104) [jboss-as-server-7.5.16.Final-redhat-1.jar:7.5.16.Final-redhat-1]
	at org.jboss.as.ejb3.deployment.processors.EjbManagementDeploymentUnitProcessor.installManagementResource(EjbManagementDeploymentUnitProcessor.java:118)
	at org.jboss.as.ejb3.deployment.processors.EjbManagementDeploymentUnitProcessor.deploy(EjbManagementDeploymentUnitProcessor.java:79)
	... 6 more


If I redeploy just A all works fine, the code in jboss-as-server-7.5.16.Final-redhat-1.jar indicates that the scheduler might still be somewhere:

if (parent.hasChild(element)) {
        if (desired == null) {
          return parent.requireChild(element);
        }
        throw new IllegalStateException();
      }

Upstream https://issues.jboss.org/browse/JBEAP-10787