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https://issues.apache.org/jira/browse/CXF-2676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cyrille Le Clerc updated CXF-2676:
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Attachment: CXF-2676.patch
Patch proposal : use an instance scope {{counterCreationLock}}
({{java.util.concurrent.locks.ReentrantLock}}).
Pros : simple code
Cons : slightly pessimistic. Simultaneous initialization of many clients and/or
endpoints is not very efficient,
Other solutions :
* use a {{synchronized}} block on {{ObjectName.toString().intern()}} :
** understanding {{intern()}} is tricky :-(
* register counters at startup :
** requires a lot of changes in the code :-(
** does not deal with hot activation of the {{ResponsetimeFeature}} :-(
> JMX InstanceAlreadyExistsException under high load initialization
> -----------------------------------------------------------------
>
> Key: CXF-2676
> URL: https://issues.apache.org/jira/browse/CXF-2676
> Project: CXF
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.2.6
> Reporter: Cyrille Le Clerc
> Assignee: Cyrille Le Clerc
> Attachments: CXF-2676.patch
>
>
> Under high load / burst startups with ResponseTimeFeature enabled , CXF
> clients and endpoints can cause {{InstanceAlreadyExistsException}}.
> {noformat:title=Sample of InstanceAlreadyExistsException}
> 2010/02/15 22:12:08,632 WARN [http-8080-20]
> org.apache.cxf.management.counters.CounterRepository -
> Can't register counter with object name
> org.apache.cxf:bus.id=my-bus,type=Performance.Counter.Server,service="{http://ws.example.com/}myService",port="myServiceSOAP";.
>
> javax.management.InstanceAlreadyExistsException:
> org.apache.cxf:bus.id=my-bus,type=Performance.Counter.Server,service="{http://ws.example.com/}myService",port="myServiceSOAP";
> {noformat}
> Before CXF-2675 , the message was
> {noformat}
> 2010/02/15 22:12:08,632 WARN [http-8080-20]
> org.apache.cxf.management.counters.CounterRepository - Can't register counter
> with object name {0}. {1}
> {noformat}
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