PI67586: ConcurrentModificationException in org.apache.cxf.jaxrs.JAXRSSer viceFactoryBean

Fixes are available

APAR status

Closed as program error.

Error description

If two or more servlets are initialized at the same time,
the user may see an error message like this:

[ERROR   ] SRVE0276E: Error while initializing Servlet
[StatelessApplicationSubclassAsEJB]:
javax.servlet.ServletException: SRVE0207E: Uncaught
initialization exception created by servlet
	at
com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletW
rapper.java:401)
	at [internal classes]
Caused by: java.util.ConcurrentModificationException
	at
java.util.ArrayList$Itr.checkForComodification(ArrayList.jav
a:881)
	at java.util.ArrayList$Itr.next(ArrayList.java:853)
	at
org.apache.cxf.jaxrs.JAXRSServiceFactoryBean.setResourceClas
ses(JAXRSServiceFactoryBean.java:154)
	... 1 more

Additionally, the user may see an FFDC report like this:
------Start of DE processing------ = [7/18/16 4:01:09:867
BST]
Exception = java.util.ConcurrentModificationException
Source = com.ibm.ws.webcontainer.servlet.ServletWrapper.init
probeid = 181
Stack Dump = java.util.ConcurrentModificationException
	at
java.util.ArrayList$Itr.checkForComodification(ArrayList.jav
a:881)
	at java.util.ArrayList$Itr.next(ArrayList.java:853)
	at
org.apache.cxf.jaxrs.JAXRSServiceFactoryBean.setResourceClas
ses(JAXRSServiceFactoryBean.java:154)
	at
org.apache.cxf.jaxrs.JAXRSServerFactoryBean.setResourceClass
es(JAXRSServerFactoryBean.java:300)
	at
com.ibm.ws.jaxrs20.server.LibertyJaxRsServerFactoryBean.doIn
it(LibertyJaxRsServerFactoryBean.java:332)
	at
com.ibm.ws.jaxrs20.server.JaxRsWebEndpointImpl.init(JaxRsWeb
EndpointImpl.java:62)
	at
com.ibm.websphere.jaxrs.server.IBMRestServlet.init(IBMRestSe
rvlet.java:65)
	at
com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletW
rapper.java:332)
	at
com.ibm.ws.webcontainer.servlet.ServletWrapper.loadOnStartup
Check(ServletWrapper.java:1428)
	at
com.ibm.ws.webcontainer.webapp.WebApp.doLoadOnStartupActions
(WebApp.java:1181)
	at
com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFi
nally(WebApp.java:1149)
	at
com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java
:1055)
	at
com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java
:6507)
	at
com.ibm.ws.webcontainer.osgi.DynamicVirtualHost.startWebApp(
DynamicVirtualHost.java:446)
	at
com.ibm.ws.webcontainer.osgi.DynamicVirtualHost.startWebAppl
ication(DynamicVirtualHost.java:441)
	at
com.ibm.ws.webcontainer.osgi.WebContainer.startWebApplicatio
n(WebContainer.java:1013)
	at
com.ibm.ws.webcontainer.osgi.WebContainer.access$000(WebCont
ainer.java:101)
	at
com.ibm.ws.webcontainer.osgi.WebContainer$2.run(WebContainer
.java:837)
	at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPool
Executor.java:1177)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoo
lExecutor.java:642)
	at java.lang.Thread.run(Thread.java:795)

This will prevent the web application from starting
successfully.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server Liberty - Web Services (JAX-WS, JAX- *
*                  RS)                                         *
****************************************************************
* PROBLEM DESCRIPTION: ConcurrentModificationException in      *
*                      org.apache.cxf.jaxrs.JAXRSServiceFactor *
*                      yBean                                   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
If two or more servlets are initialized at the same time, the
user may see an error message like this:

[ERROR   ] SRVE0276E: Error while initializing Servlet
[StatelessApplicationSubclassAsEJB]:
javax.servlet.ServletException: SRVE0207E: Uncaught
initialization exception created by servlet
	at
com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapp
er.java:401)
	at [internal classes]
Caused by: java.util.ConcurrentModificationException
	at
java.util.ArrayList$Itr.checkForComodification(ArrayList.java:88
1)
	at java.util.ArrayList$Itr.next(ArrayList.java:853)
	at
org.apache.cxf.jaxrs.JAXRSServiceFactoryBean.setResourceClasses(
JAXRSServiceFactoryBean.java:154)
	... 1 more

Additionally, the user may see an FFDC report like this:
------Start of DE processing------ = [7/18/16 4:01:09:867 BST]
Exception = java.util.ConcurrentModificationException
Source = com.ibm.ws.webcontainer.servlet.ServletWrapper.init
probeid = 181
Stack Dump = java.util.ConcurrentModificationException
	at
java.util.ArrayList$Itr.checkForComodification(ArrayList.java:88
1)
	at java.util.ArrayList$Itr.next(ArrayList.java:853)
	at
org.apache.cxf.jaxrs.JAXRSServiceFactoryBean.setResourceClasses(
JAXRSServiceFactoryBean.java:154)
	at
org.apache.cxf.jaxrs.JAXRSServerFactoryBean.setResourceClasses(J
AXRSServerFactoryBean.java:300)
	at
com.ibm.ws.jaxrs20.server.LibertyJaxRsServerFactoryBean.doInit(L
ibertyJaxRsServerFactoryBean.java:332)
	at
com.ibm.ws.jaxrs20.server.JaxRsWebEndpointImpl.init(JaxRsWebEndp
ointImpl.java:62)
	at
com.ibm.websphere.jaxrs.server.IBMRestServlet.init(IBMRestServle
t.java:65)
	at
com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapp
er.java:332)
	at
com.ibm.ws.webcontainer.servlet.ServletWrapper.loadOnStartupChec
k(ServletWrapper.java:1428)
	at
com.ibm.ws.webcontainer.webapp.WebApp.doLoadOnStartupActions(Web
App.java:1181)
	at
com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinall
y(WebApp.java:1149)
	at
com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java:105
5)
	at
com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java:650
7)
	at
com.ibm.ws.webcontainer.osgi.DynamicVirtualHost.startWebApp(Dyna
micVirtualHost.java:446)
	at
com.ibm.ws.webcontainer.osgi.DynamicVirtualHost.startWebApplicat
ion(DynamicVirtualHost.java:441)
	at
com.ibm.ws.webcontainer.osgi.WebContainer.startWebApplication(We
bContainer.java:1013)
	at
com.ibm.ws.webcontainer.osgi.WebContainer.access$000(WebContaine
r.java:101)
	at
com.ibm.ws.webcontainer.osgi.WebContainer$2.run(WebContainer.jav
a:837)
	at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExec
utor.java:1177)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExe
cutor.java:642)
	at java.lang.Thread.run(Thread.java:795)

This will prevent the web application from starting
successfully.

Problem conclusion

The fix for this APAR adds synchronization logic to prevent the
ConcurrentModificationException.

The fix for this APAR is currently targeted for inclusion in fix
pack 16.0.0.3.  Please refer to the Recommended Updates page for
delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PI67586
Reported component name
WAS LIBERTY COR
Reported component ID
5725L2900
Reported release
855
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-08-15
Closed date
2016-08-16
Last modified date
2016-08-16

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WAS LIBERTY COR
Fixed component ID
5725L2900

Applicable component levels

R855 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSD28V","label":"WebSphere Application Server Liberty Core"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"855","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI67586: ConcurrentModificationException in org.apache.cxf.jaxrs.JAXRSSer viceFactoryBean

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R855 PSY

Document Information

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