[erlang-questions] Re: Possible leak in inets httpc.

Andrey Popp <>
Fri Jul 9 08:12:37 CEST 2010


We have updated to R14 (thanks to deb packages in debian squeeze
repository) and all seems to be ok for now.

On Fri, Jul 9, 2010 at 1:34 AM, Anthony Molinaro
<> wrote:
> Well, looks like the answer is yes and no.  I was able to get a patch
> which applied cleanly, however, the problem does not appear to be fixed.
> The ets table still fills up with every request that times out
> (I unfortunately don't have a standalone test, but I've tested
> repeatedly and it always seem to get an extra entry for every request
> that times out).
>
> This is sort of a show stopper for me upgrading, so I'll be trying to
> figure out a fix, but if anyone more familiar with the code wants to
> help me out, it would be appreciated.
>
> Thanks,
>
> -Anthony
>
> On Thu, Jul 08, 2010 at 01:13:41PM -0700, Anthony Molinaro wrote:
>> Hi, anyone know if its safe to backport this fix to R13B04?  I'm in the process
>> of deploying R13B04 as an upgrade from R12B05 and since I make heavy use of
>> httpc this will bite me.  Ideally, I can just grab the appropriate files from
>> git and plop them into my R13B04 when I build an rpm (of course I need to
>> remember enough git to do that :) ), so wondering if it's possible or if
>> there are deps outside of the inets directory which matter?
>>
>> Thanks,
>>
>> -Anthony
>>
>> On Thu, Jul 08, 2010 at 02:12:07PM +0400, Andrey Popp wrote:
>> > It seems it has been fixed with [1] in inets-5.3.2. Sorry.
>> >
>> > [1]: http://github.com/erlang/otp/commit/91c89d54d45989a85367f10d5902b9b508754a49
>> >
>> > On Thu, Jul 8, 2010 at 1:57 PM, Andrey Popp <> wrote:
>> > > Hello,
>> > >
>> > > I have application that makes huge number of HTTP requests with httpc
>> > > and I have spotted that `httpc_manager__handler_db` ETS table growing
>> > > in size and doesn't clean up. That is the example records from this
>> > > table (ets:i(httpc_manager__handler_db)):
>> > >
>> > > <1   > {handler_info,#Ref<0.0.0.18800>,undefined,<0.177.0>,undefined,operational}
>> > > <2   > {handler_info,#Ref<0.0.0.35242>,undefined,<0.3075.0>,undefined,operational}
>> > > <3   > {handler_info,#Ref<0.0.0.61713>,undefined,<0.5755.0>,undefined,operational}
>> > > <4   > {handler_info,#Ref<0.0.0.68114>,undefined,<0.6943.0>,undefined,operational}
>> > > <5   > {handler_info,#Ref<0.0.0.85303>,undefined,<0.8305.0>,undefined,operational}
>> > >
>> > > and processes with handler pids are no longer alive. Also, note that I
>> > > have no timeout setting in my http:request HTTPOptions, but I think
>> > > inets should not leak even in that case.
>> > >
>> > > Thanks.
>> > >
>> > > --
>> > > Andrey Popp
>> > >
>> > > phone: +7 911 740 24 91
>> > > e-mail: 
>> > >
>> >
>> >
>> >
>> > --
>> > Andrey Popp
>> >
>> > phone: +7 911 740 24 91
>> > e-mail: 
>> >
>> > ________________________________________________________________
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>>
>> --
>> ------------------------------------------------------------------------
>> Anthony Molinaro                           <>
>
> --
> ------------------------------------------------------------------------
> Anthony Molinaro                           <>
>
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-- 
Andrey Popp

phone: +7 911 740 24 91
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