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https://issues.apache.org/jira/browse/DERBY-5492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146253#comment-13146253
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Knut Anders Hatlen commented on DERBY-5492:
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I ran a quick test on the Windows machine where we saw the failures in the
nightly tests. I ran the derbynet test suite and verified that it failed with
permission problems without the patch and passed with the patch.
Tiny nit: The patch adds an import for the Monitor class, but it doesn't use
it. The rest of the changes look good to me.
> Restrictive file permissions: permissions removed also for owner on NTFS if
> Acl does not contain explicit entry for owner
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-5492
> URL: https://issues.apache.org/jira/browse/DERBY-5492
> Project: Derby
> Issue Type: Bug
> Components: Store
> Affects Versions: 10.9.0.0
> Reporter: Dag H. Wanvik
> Attachments: derby-5492-1.diff, derby-5492-1.stat
>
>
> It turns out that the file owner does not necessarily get an explicit
> AclEntry; this depends on whether the created file has sufficient permissions
> already through, say, a permission for everybody to write. The present logic
> removes all AclEntries except those granted to the file's owner, erroneously
> presuming there would be such an entry always. This led to all AclEntries
> being removed.
> This error is seen in Oracle's nightly regressions for Windows, but did not
> reproduced when running manually on Windows. This was due to different
> default inherited permissions on the directories in which the regression
> tests were run.
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