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From Kevin Klues <klue...@gmail.com>
Subject Re: Review Request 55355: Fixed an FD leak in the IO switchboard.
Date Mon, 09 Jan 2017 22:49:23 GMT

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https://reviews.apache.org/r/55355/#review160992
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I'd run this change my @jie.


src/slave/containerizer/mesos/io/switchboard.cpp (line 993)
<https://reviews.apache.org/r/55355/#comment232237>

    Can you move this declaration just below the `inputConnected` declaration?
    
    It seems to group better there for me.



src/slave/containerizer/mesos/io/switchboard.cpp (line 1265)
<https://reviews.apache.org/r/55355/#comment232239>

    It's probably worth mentioning here why we grab a reference to the accept (i.e. so that
we can discard it in `finalize()` so that they FD associated with the socket doesn't get leaked).


- Kevin Klues


On Jan. 9, 2017, 8:35 p.m., Greg Mann wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/55355/
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> 
> (Updated Jan. 9, 2017, 8:35 p.m.)
> 
> 
> Review request for mesos, Benjamin Bannier, Benjamin Hindman, Benjamin Mahler, Joseph
Wu, and Kevin Klues.
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Previously, the IO switchboard could leak file descriptors
> because it held a reference to its server socket within the
> socket's accept loop. This patch explicitly discards the
> future containing this reference to eliminate the leak.
> 
> 
> Diffs
> -----
> 
>   src/slave/containerizer/mesos/io/switchboard.cpp 67c51678e87389ab08a81fe4832cffd3d83bdae9

> 
> Diff: https://reviews.apache.org/r/55355/diff/
> 
> 
> Testing
> -------
> 
> Run:
> `bin/mesos-tests.sh --gtest_repeat=-1 --gtest_filter="IOSwitchboardServerTest.AttachInput"`
> 
> and then simultaneously execute `sudo lsof -p PID_of_test_process | wc -l` repeatedly
to ensure that the number of open FDs is not increasing.
> 
> 
> Thanks,
> 
> Greg Mann
> 
>


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