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https://issues.apache.org/jira/browse/GERONIMO-6112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13220659#comment-13220659
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xiezhi commented on GERONIMO-6112:
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recreate this issue may follow this steps
1.deploy a war in admin console, for example deploy hello-3.0.0.0.war
2.copy hello-3.0.0.0.car or hello-3.0.0.0.war from the
<geronimo-home>\repository to another place for backup.
3.uninstall hello component in admin console.
4.deploy the backup car or war before
the error message occurs.
Or deploy a car which does not exist in the server in admin console. It can
recreate the issue either.
> Sum file already exists
> -----------------------
>
> Key: GERONIMO-6112
> URL: https://issues.apache.org/jira/browse/GERONIMO-6112
> Project: Geronimo
> Issue Type: Bug
> Security Level: public(Regular issues)
> Components: deployment
> Affects Versions: 3.0
> Reporter: Jarek Gawor
>
> Deploying a "car" module or module with the .ser and .sha1 files causes
> "Unable to deploy: java.io.IOException: Sum file already exists" error. Such
> modules shouldn't be deployed in the first place but some users do by mistake
> or whatever. Unfortunately, the error doesn't help in determining what's
> wrong. So I think we should either throw a nicer exception when this happens
> or suppress this error altogether and redeploy the module.
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