[erlang-questions] Why RPC in Erlang? [was: How RPC works in erlang?]
Thu Oct 5 19:55:33 CEST 2017
I would go with: because someone needed it at some point. And now if you need it, too… you don’t have to reinvent it now.
And to be super-precise (and a bit pedantic, I know): RPC is not in Erlang (i.e. in the VM), it comes (and is implemented using) OTP. In other words: it’s a tool built with the language, it’s not a part of the language like the basic architecture of message-passing concurrency.
Brujo Benavides <http://about.me/elbrujohalcon>
> On Oct 5, 2017, at 14:50, Miles Fidelman <mfidelman@REDACTED> wrote:
> I guess an obvious question is why does Erlang have an RPC mechanism at all? It's so at odds with the basic architecture of message-passing concurrency.
> Miles Fidelman
> On 10/5/17 3:02 AM, Brujo Benavides wrote:
>> Only for io, AFAIK.
>> On Thu, 5 Oct 2017 at 01:51 Arun <arunp@REDACTED <mailto:arunp@REDACTED>> wrote:
>> Hi Brujo,
>> Thanks for the information, but i have one more doubt; is this behavior only for io:format function calls or the execution of the entire function also will be happening in the host node.
>> Arun P.
>> On Tuesday 03 October 2017 06:50 PM, Brujo Benavides wrote:
>>> Hi Arun,
>>> That’s intended. It happens because of how Erlang redirects all IO through the process group_leader.
>>> This <https://stackoverflow.com/questions/12491607/remote-nodes-group-leaders-and-printouts> is the best explanatory link I could find googling quickly.
>>> Hope it helps.
>>> Brujo Benavides <http://about.me/elbrujohalcon>
>>>> On Oct 3, 2017, at 10:10, Arun <arunp@REDACTED <mailto:arunp@REDACTED>> wrote:
>>>> Hi all, I have two distributed applications running on two different nodes. And from one node I tried to call the function on the remote node by doing RPC, and its been observed that all the debug prints given in the application running on the remote node is getting printed on the host node's console. Can somebody please tell me in detail why this is happening and how the RPC in erlang works. ? Thanks in advance. Arun P. _______________________________________________ erlang-questions mailing list erlang-questions@REDACTED <mailto:erlang-questions@REDACTED> http://erlang.org/mailman/listinfo/erlang-questions <http://erlang.org/mailman/listinfo/erlang-questions>
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