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Date: Mon, 4 Aug 2008 20:26:44 -0700 (PDT)
From: "Nandana Mihindukulasooriya (JIRA)" <jira@apache.org>
To: axis-dev@ws.apache.org
Subject: [jira] Commented: (AXIS2-3958) ConcurrentModificationException in
 AxisConfiguration
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    [ https://issues.apache.org/jira/browse/AXIS2-3958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619772#action_12619772 ] 

Nandana Mihindukulasooriya commented on AXIS2-3958:
---------------------------------------------------

Hi Hans,

In this case, I think we will have to synchronize getServiceForActivation method too. But as getServices is a very frequent call which is called several times per request, the cost of this synchronizing may be high. Rather than synchronizing all these methods, shall we use a HashTable for allEndpoints too. I think it will solve the problem in an efficient way. 

WDYT ?

thanks,
nandana

> ConcurrentModificationException in AxisConfiguration
> ----------------------------------------------------
>
>                 Key: AXIS2-3958
>                 URL: https://issues.apache.org/jira/browse/AXIS2-3958
>             Project: Axis 2.0 (Axis2)
>          Issue Type: Bug
>          Components: kernel
>         Environment: Axis2 1.4.1 RC1 artifiacts
>            Reporter: Hans G Knudsen
>             Fix For: 1.4.1
>
>         Attachments: 3958AXIS2.patch, patch.txt, patch_3958_synchronized.txt
>
>
> Hi!
> I ran into a :
> java.util.ConcurrentModificationException
> 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:841)
> 	at java.util.HashMap$KeyIterator.next(HashMap.java:877)
> 	at org.apache.axis2.engine.AxisConfiguration.removeServiceGroup(AxisConfiguration.java:395)
> 	at org.apache.axis2.client.ServiceClient.cleanup(ServiceClient.java:813)
> In my testsetup I run 5 concurrent threads each running a series of request .
> - all creating a new ServiceClient pr request
> - reusing the same ConfigurationContext.
> /hans

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