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https://issues.apache.org/jira/browse/DERBY-4700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kristian Waagan updated DERBY-4700:
-----------------------------------

    Attachment: derby-4700-1a.diff

First proposal for a patch, using the mechanism Knut mentioned above.

Regression tests passed.
I haven't looked through the existing tests yet for more cases where a bogus 
port is used.
I'm also considering adding a println-statement where we assign a bogus port 
(i.e. bogusPort = getNextAvailablePort()).

> Add method to obtain a bogus port in TestConfiguration
> ------------------------------------------------------
>
>                 Key: DERBY-4700
>                 URL: https://issues.apache.org/jira/browse/DERBY-4700
>             Project: Derby
>          Issue Type: Improvement
>          Components: Test
>    Affects Versions: 10.7.0.0
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>            Priority: Minor
>         Attachments: derby-4700-1a.diff
>
>
> In some cases one needs to obtain a port number on which there is no Derby 
> network server.
> Today this is solved in an ad-hoc way, for instance by using the current port 
> minus one. When running tests in parallel, there is a chance that a port 
> where there actually is a Derby network server listening is picked.
> As a start, I suggest that the bogus port is allocated to the last port in 
> the port range configured for the run: baseport + MAX_PORTS_USED -1.

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