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https://issues.apache.org/jira/browse/LUCENE-6488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14547877#comment-14547877
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Robert Muir commented on LUCENE-6488:
-------------------------------------
implCloseChannel has to be coded differently here, we can't call it in a
finally block:
{quote}
This method is only invoked if the channel has not yet been closed, and it is
never invoked more than once.
{quote}
> HandleTrackingFs leaks files if #onClose throws an exception
> ------------------------------------------------------------
>
> Key: LUCENE-6488
> URL: https://issues.apache.org/jira/browse/LUCENE-6488
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/test-framework
> Affects Versions: 5.1
> Reporter: Simon Willnauer
> Assignee: Simon Willnauer
> Priority: Minor
> Fix For: Trunk, 5.x, 5.2
>
> Attachments: LUCENE-6488.patch
>
>
> if #onClose throws an exception for instance due to an error in #onOpen we
> leak the filehandle since we don't call super.close(). I ran into this in
> Elasticsearch tests where files are concurrently deleted and we got a
> WindowsFS -> LeakFS -> UnixFs. The UnixFS opened the file but by the time
> WindowsFS tried to read the files metadata it was already deleted causing
> onOpen to barf and we leaked the file.
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