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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3675) ConcurrentModificationException on closing pooled connection
Date Fri, 16 May 2008 12:41:56 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12597449#action_12597449

Knut Anders Hatlen commented on DERBY-3675:

Have you defined any connection event listeners on the pooled connection? And if you have,
do any of the listeners add or remove listeners on the same pooled connection?

> ConcurrentModificationException on closing pooled connection
> ------------------------------------------------------------
>                 Key: DERBY-3675
>                 URL: https://issues.apache.org/jira/browse/DERBY-3675
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Client
>    Affects Versions:
>            Reporter: Trejkaz
> I'm seeing the following exception from calling close() on a connection returned from
a CollectionPoolDataSource.
> java.util.ConcurrentModificationException
> 	at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
> 	at java.util.AbstractList$Itr.next(AbstractList.java:343)
> 	at org.apache.derby.client.ClientPooledConnection.recycleConnection(ClientPooledConnection.java:343)
> 	at org.apache.derby.client.am.LogicalConnection.close(LogicalConnection.java:83)
> The only particularly unique thing about the area of the code where we're doing this
is that we're closing it immediately after opening it, as an initial check to make sure it
can connect.

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