[erlang-questions] Erlang/OTP 21.0-rc1 (Release Candidate)

[Andreas Schultz]

Hi,

The RC breaks rebar3 badly, not sure if it's rebar's fault or a problem
with the new logger...

With an up to date rebar3 clone:

    rebar3$ ./bootstrap
    (no logger present) unexpected logger message: {log,error,"Error in
process ~p with exit
value:~n~p~n",[<0.39.0>,{badarg,[{ets,lookup,[logger,proc_lib],[]},{logger_config,allow,3,[{file,"logger_config.erl"},{line,42}]},{proc_lib,crash_report,4,[{file,"proc_lib.erl"},{line,508}]},{proc_lib,exit_p,3,[{file,"proc_lib.erl"},{line,269}]}]}],#{error_logger=>#{emulator=>true,tag=>error},gl=><0.37.0>,pid=><0.39.0>,time=>-576460751953591}}
    (no logger present) unexpected logger message: {log,error,"Error in
process ~p with exit
value:~n~p~n",[<0.39.0>,{badarg,[{ets,lookup,[logger,proc_lib],[]},{logger_config,allow,3,[{file,"logger_config.erl"},{line,42}]},{proc_lib,crash_report,4,[{file,"proc_lib.erl"},{line,508}]},{proc_lib,exit_p,3,[{file,"proc_lib.erl"},{line,269}]}]}],#{error_logger=>#{emulator=>true,tag=>error},gl=><0.37.0>,pid=><0.39.0>,time=>-576460751953591}}
   ...

And so on...

Regards
Andreas

Henrik Nord X <henrik.x.nord@REDACTED> schrieb am Mi., 2. Mai 2018 um
13:38 Uhr:

> OTP 21 Release Candidate 1
>
> This is the first of two planned release candidates before the OTP 21
> release. The intention whit this release is that you as users try it
> and give us feedback if something does not work as expected. Could be a
> bug,an unexpected incompatibility, a significant change of
> characteristics in a negative direction, etc.
>
> Erlang/OTP 21 is a new major release with new features, improvements as
> well as incompatibilities.
>
> Potential Incompatibilities
>
>  * All Corba applications are now moved from the OTP repository
>     * A new Corba repository will be created https://github.com/erlang
>  * New applications ftp and tftp, moved from inets
>  * ssl no longer supports 3_DES cipher suites or RSA-key exchange
> cipher suites by default
>  * erlang:monitor on a primitive node (erl_interface, jinterface, etc)
> will no longer fail with badarg exception. Instead a monitor will be
> created, but it will only supervise the connection to the node.
>
>  Highlights
>
>  Erts:
>
>     * Enhanced IO scalability
>     * Support for usage of distribution controller processes for
>       alternative transports, routing etc
>     * compact instructions on 64bit systems for code below 4GB 20% less
>       memory for loaded code
>     * Rewrite of the efile-driver with NIFs and "Dirty schedulers"
>       resulting in faster file operations
>     * non-smp VM removed
>     * link and monitor optimized for scalability
>     * os:getenv/putenv now work on thread-safe emulation. No longer in
>       sync with libc getenv(3). Manual synchronization will be needed.
>
> Compiler:
>     * Misc compiler optimizations including contributions from the
>       Elixir team resulting in 10% improvements in benchmarks
>     * "Tuple calls" have been removed from the run-time system.
>     * Code such as f({ok, Val}) -> {ok, Val} is now automatically
>       rewritten to f({ok, Val} = Tuple) -> Tuple. this reduces code
>       size, execution time, and removed GC pressure.
>     * More information in stacktrace from a number of operators
>     * erlang:get_stacktrace/0 deprecated to be replaced with try ...
>       catch C:R:Stacktrace -> ...
>     * Creation of small maps with literal keys optimized.
>
> Security:
>     * DTLS support in SSL
>     * Enhanced support for distribution over TLS
>     * "unsecure" ciphers removed from defaults in SSL and SSH.
>     * A new option value defined to facilitate implementing exec
>       servers. Old option kept for compatibility, but now gives errors
>       on stderror.
>
> Standard libraries:
>     * New API for logging, logger
>     * New uri_string module for parsing URIs according to "The
>       standard"
>     * New function lists:search(list,fun/1) -> {ok, Value} | false
>     * Changed default behaviour of .erlang loading. escript, erlc,
>       dialyzer and typer no longer load an .erlang at all.
>
> For more details see
> http://erlang.org/download/otp_src_21.0-rc1.readme
>
> Pre built versions for Windows can be fetched here:
> http://erlang.org/download/otp_win32_21.0-rc1.exe
> http://erlang.org/download/otp_win64_21.0-rc1.exe
>
> Online documentation can be browsed here:
> http://erlang.org/documentation/doc-10.0-rc1/doc/
>
> The Erlang/OTP source can also be found at GitHub on the official
> Erlang repository,
> https://github.com/erlang/otp with tag OTP-21.0-rc1
>
>
> Thank you for all your contributions!
> _______________________________________________
> erlang-questions mailing list
> erlang-questions@REDACTED
> http://erlang.org/mailman/listinfo/erlang-questions
>
-- 
-- 
Dipl.-Inform. Andreas Schultz

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