[jira] Updated: (DERBY-3308) Broken synchronization for event handling in ClientPooledConnection40

["Kristian Waagan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-3308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kristian Waagan updated DERBY-3308:
-----------------------------------

    Fix Version/s: 10.3.2.2
                   10.2.2.1

Backported the fix (revision 614536):
10.2 -> revision 618639
10.3 -> revision 618640

I ran all tests for both branches without errors, and both merges were clean.
Updated the fix versions accordingly.

> Broken synchronization for event handling in ClientPooledConnection40
> ---------------------------------------------------------------------
>
>                 Key: DERBY-3308
>                 URL: https://issues.apache.org/jira/browse/DERBY-3308
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC, Network Client
>    Affects Versions: 10.2.2.0, 10.3.2.1, 10.4.0.0
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>            Priority: Minor
>             Fix For: 10.2.2.1, 10.3.2.2, 10.4.0.0
>
>         Attachments: derby-3308-1a-eventlisteners_synchronization.diff, derby-3308-1b-eventlisteners_synchronization.diff
>
>
> Access to the the list of event listeners is not synchronized properly.
> Taken the rather infrequent use of the relevant methods and the small critical sections, I mean it is sufficient to add synchronization to all the methods that access it at the method level. The same approach is taken in ClientPooledConnection (although not followed through consistently, some of the methods are unsynchronized).

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