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https://issues.apache.org/jira/browse/PROTON-2211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Clifford Jansen resolved PROTON-2211.
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Resolution: Fixed
> Epoll proactor leaks file descriptors
> -------------------------------------
>
> Key: PROTON-2211
> URL: https://issues.apache.org/jira/browse/PROTON-2211
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Affects Versions: proton-c-0.31.0
> Reporter: Clifford Jansen
> Assignee: Clifford Jansen
> Priority: Blocker
> Fix For: proton-c-0.31.0
>
>
> Separation of responsibility of closing a file descriptor (which could
> generate an event) and registering/deregistering it within epoll (to watch
> for or ignore events) was strong in the previous proactor version.
> Rationalizing the data structures for space efficiency and overall clarity
> obscured this in the new version, and the removal of a "duplicate" fd
> reference made it possible to forget the fd to close.
> From inspection, a simple short term fix is to remember the fd that is being
> leaked and close it when suitable.
> The longer term fix should perhaps rationalize the current async nature of
> start_polling() and stop_polling() and serialize it through the new scheduler
> mechanism in the newer epoll proactor implementation.
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