[erlang-questions] Hot code upgrade with Erlang version change

Roberto Ostinelli <>
Mon Feb 15 18:49:31 CET 2016


Thank you all.

On the same subject: if I upgrade some dependencies, I've noted that when I
generate the .appup file with rebar it generates them for every dependency:

:rebar generate-appups previous_release=myapp-1.3.6
==> rel (generate-appups)
Generated appup for bear
Generated appup for exometer_core
Generated appup for folsom
Generated appup for goldrush
Generated appup for jiffy
Generated appup for lager
Generated appup for myapp
Generated appup for parse_trans
Generated appup for setup
Appup generation complete

If I follow the steps in https://github.com/rebar/rebar/wiki/Upgrades, will
these dependencies also be hot code updated?



On Mon, Feb 15, 2016 at 4:47 PM, Loïc Hoguin <> wrote:

> From what I understand this involves the restart_emulator command. See
> 12.16 here: http://erlang.org/doc/design_principles/appup_cookbook.html
>
>
> On 02/15/2016 04:27 PM, Roberto Ostinelli wrote:
>
>> Dear all,
>> Is it possible to do hot code upgrade going from 17.5 to 18.2.1? I
>> couldn't find any clear info to this regards.
>>
>> Thank you,
>> r.
>>
>>
>> _______________________________________________
>> erlang-questions mailing list
>> 
>> http://erlang.org/mailman/listinfo/erlang-questions
>>
>>
> --
> Loïc Hoguin
> http://ninenines.eu
> Author of The Erlanger Playbook,
> A book about software development using Erlang
>
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