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https://issues.apache.org/jira/browse/FLUME-2208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13789835#comment-13789835
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Hari Shreedharan commented on FLUME-2208:
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Using SelectSocketChannel fixes the issue.
> Jetty's default SocketSelector leaks File descriptors
> -----------------------------------------------------
>
> Key: FLUME-2208
> URL: https://issues.apache.org/jira/browse/FLUME-2208
> Project: Flume
> Issue Type: Bug
> Reporter: Hari Shreedharan
> Assignee: Hari Shreedharan
> Attachments: FLUME-2208.patch
>
>
> This causes each HTTP monitoring poll to leak one FD and each connection from
> an external client to HTTP Source to leak an FD when closed. Each metrics
> poll causes lsof to show an FD that looks like this:
> java 3317 root 173u sock 0,5 31374 can't identify protocol
> This is because of a half-closed socket, whose close is incomplete.
> [JETTY-597|http://jira.codehaus.org/browse/JETTY-597] might be relevant.
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