Unable to set native session handler that is different from the one define in php.ini after update to Magento 2.3

[mlindholm]

Preconditions (*)

2.4-develop

Steps to reproduce (*)

1. Configure env.php to use memcached as save_handler as instructed in the documentation.

Expected result (*)

1. SessionManager should be setting memcached as used save handler in initOptions function.

Actual result (*)

1. SessionManager is not setting the memcached as save_handler, but is instead using the files session_handler. The save_path is set though, which result error message below:

main.CRITICAL: Warning: SessionHandler::read(): open(127.0.0.1:11211/sess_0imeeaqmnvemdg4e3h57tat0ik, O_RDWR) failed: No such file or directory (2) in../vendor/magento/framework/Session/SaveHandler/Native.php on line 22 {"exception":"[object] (Exception(code: 0): Warning: SessionHandler::read(): open(127.0.0.1:11211/sess_0imeeaqmnvemdg4e3h57tat0ik, O_RDWR) failed: No such file or directory (2) in ../vendor/magento/framework/Session/SaveHandler/Native.php on line 22 at ../vendor/magento/framework/App/ErrorHandler.php:61)"} []

Own foundings

New changes made in 2.3 for SessionManager are preventing the save_handler to be set as anything else than the one configured to php.ini for Native session handler.

[m2-assistant]

Hi @Tuuhea. Thank you for your report.
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[m2-assistant]

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[magento-engcom-team]

✅ Confirmed by @engcom-Charlie
Thank you for verifying the issue. Based on the provided information internal tickets MC-20484 were created

Issue Available: @engcom-Charlie, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

[steverobbins]

A work around for the time being, find your php.ini file and set session.save_handler = memcached

File: /etc/php/7.2/fpm/php.ini
...
[Session]
; Handler used to store/retrieve data.
; http://php.net/session.save-handler
session.save_handler = memcached

; Argument passed to save_handler.  In the case of files, this is the path
; where data files are stored. Note: Windows users have to change this
; variable in order to use PHP's session functions.
...

Make sure you've installed the memcached PHP plugin, see https://devdocs.magento.com/guides/v2.3/config-guide/memcache/memcache_ubuntu.html#config-memcache-install

[frilogg]

Any update on this issue?