[jboss-jira] [JBoss JIRA] (JBAS-9485) mod-cluster: not setting a load provider leads to an NPE

[Bela Ban (JIRA)]

Bela Ban created JBAS-9485:
------------------------------

             Summary: mod-cluster: not setting a load provider leads to an NPE
                 Key: JBAS-9485
                 URL: https://issues.jboss.org/browse/JBAS-9485
             Project: Application Server 3  4  5 and 6
          Issue Type: Bug
      Security Level: Public (Everyone can see)
            Reporter: Bela Ban
            Priority: Minor


In standalone*.xml or domain.xml (AS 7.1.2), if we omit dynamic-load-provider or simple-load-provider, then we get an NPE (see below) when starting an AS instance.
 E.g. 

<subsystem xmlns="urn:jboss:domain:modcluster:1.1">
            <mod-cluster-config advertise-socket="modcluster">
                <!--dynamic-load-provider>
                    <load-metric type="busyness"/>
                </dynamic-load-provider-->
            </mod-cluster-config>
        </subsystem>

[Server:one] 08:49:51,379 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015874: JBoss AS 7.1.2.Final-SNAPSHOT "Brontes" started in 9954ms - Started 171 of 300 services (128 services are passive or on-demand)
[Server:one] 08:49:55,101 INFO  [org.jboss.modcluster.ModClusterService] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Engine [jboss.web] will use jvmRoute: e4632cc7-f024-33ff-b3ee-c9b94274c09a
[Server:one] 08:49:55,108 ERROR [org.apache.catalina.core.ContainerBase] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Exception invoking periodic operation: : java.lang.NullPointerException
[Server:one]    at org.jboss.modcluster.ModClusterService.getLoadBalanceFactor(ModClusterService.java:485)
[Server:one]    at org.jboss.modcluster.ModClusterService.status(ModClusterService.java:466)
[Server:one]    at org.jboss.modcluster.container.catalina.CatalinaEventHandlerAdapter.lifecycleEvent(CatalinaEventHandlerAdapter.java:239)
[Server:one]    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:115) [jbossweb-7.0.14.Final.jar:]
[Server:one]    at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1337) [jbossweb-7.0.14.Final.jar:]
[Server:one]    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601) [jbossweb-7.0.14.Final.jar:]
[Server:one]    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590) [jbossweb-7.0.14.Final.jar:]
[Server:one]    at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_29]


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