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https://issues.apache.org/jira/browse/TS-4879?focusedWorklogId=31739&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-31739
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ASF GitHub Bot logged work on TS-4879:
--------------------------------------
Author: ASF GitHub Bot
Created on: 07/Nov/16 17:41
Start Date: 07/Nov/16 17:41
Worklog Time Spent: 10m
Work Description: Github user PSUdaemon closed the pull request at:
https://github.com/apache/trafficserver/pull/1205
Issue Time Tracking
-------------------
Worklog Id: (was: 31739)
Time Spent: 5h 10m (was: 5h)
> NetVC leaks while hyper emergency occur on check_emergency_throttle()
> ---------------------------------------------------------------------
>
> Key: TS-4879
> URL: https://issues.apache.org/jira/browse/TS-4879
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Reporter: Oknet Xu
> Assignee: Oknet Xu
> Fix For: 6.2.1, 7.0.0
>
> Time Spent: 5h 10m
> Remaining Estimate: 0h
>
> The con could be closed if hyper emergency occur on
> check_emergency_throttle().
> But we did not check the con.fd while we get return from
> check_emergency_throttle().
> For hyper emergency:
> - The socket fd is removed from epoll while it is closed.
> - A NetVC with a closed socket fd is created and callback NET_EVENT_OPEN to
> SM.
> Thus:
> - The NetVC will never triggered by NetHandler.
> - Only InactivityCop could handle the NetVC and the default timeout value is
> 86400 secs.
> For the counter: net_connections_currently_open_stat
> - It is increased in “connect_re_internal()”
> - It isn't decreased while the con.fd set to NO_FD due to hyper emergency
> - Because it is decreased in close_UnixNetVConnection() only con.fd != NO_FD.
> (TS-4178)
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