676721 – When no partition name is defined in AS instance, metric collection results in NPE

Bug 676721 - When no partition name is defined in AS instance, metric collection results in NPE

Summary: When no partition name is defined in AS instance, metric collection results i...

Keywords:
Status:	NEW
Alias:	None
Product:	RHQ Project
Classification:	Other
Component:	Plugins
Sub Component:
Version:	3.0.0
Hardware:	All
OS:	All
Priority:	medium
Severity:	medium
Target Milestone:	---
Target Release:	---
Assignee:	Nobody
QA Contact:
Docs Contact:
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Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2011-02-10 22:31 UTC by Larry O'Leary
Modified:	2022-03-31 04:27 UTC (History)
CC List:	0 users
Fixed In Version:
Clone Of:
Environment:	EAP 5.0.1 running with default profile JON 2.4 using JBoss AS 5 Plug-In
Last Closed:
Embargoed:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Bugzilla	594520	0	urgent	CLOSED	EAP 5.x running "production" config reports "partitionName" trait as NULL	2021-02-22 00:41:40 UTC
Red Hat Issue Tracker	JBPAPP-4541	0	Major	Closed	'partitionName' property on {MCBean:ServerConfig} Profile Service managed component returns a null value on AS 5.x and E...	2015-11-05 18:54:17 UTC

Internal Links: 594520

Description Larry O'Leary 2011-02-10 22:31:16 UTC

If I run JBoss EAP/AS default profile - so no partition name is specified then JON GUI will show "nothing found" in "Cluster Partition Name" but agent log file will be filled up with the exceptions like:

ERROR [ResourceContainer.invoker.daemon-9] (org.rhq.plugins.jbossas5.ApplicationServerComponent)- Failed to obtain metric 'MCBean|ServerConfig|*|partitionName'.
java.lang.NullPointerException
	at org.rhq.plugins.jbossas5.util.ManagedComponentUtils.getSimplePropertyValue(ManagedComponentUtils.java:83)
	at org.rhq.plugins.jbossas5.ApplicationServerComponent.getMetric(ApplicationServerComponent.java:544)
	at org.rhq.plugins.jbossas5.ApplicationServerComponent.getValues(ApplicationServerComponent.java:248)
	at sun.reflect.GeneratedMethodAccessor68.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)
	at java.util.concurrent.FutureTask$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:619)


If we run JBoss EAP/AS using "all" or "production" profile then this exception is not logged (even if we don't specify partition name as an argument) and in this case JON will show "DefaultPartition" as "Cluster Partition Name". If we run JBoss with the specified partition name then this will be taken as "Cluster Partition Name" - and all this seems fine (no exceptions in the log file).

...

This appears to be related to Bug 594520 and JBPAPP-4541. The problem is, the NPE should just not be logged in the event that the AS instance is returning a null object or the object could not be found.

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