[🐛 Bug]: Max Concurrency value is always 1 in selenium grid 4

[djavvadi]

What happened?

Hi Everyone,

I am selenium grid since very long time for my daily test executions. I used windows server 2019 cloud machine to run selenium grid with xenon dual core CPU and 16B of RAM. After upgrading selenium server version to 4, I recently encountered that the max concurrency value is always 1 and I couldn't run multi sessions of the browsers at the same time.

I updated several versions of the selenium but the value is not updated.

Used below values in Hub and Node configurations too, but the result is same.
'max-sessions'

How can we reproduce the issue?

Command used to run the grid 
java -jar selenium-server-4.7.2.jar --port 4545 --max-threads 3

Relevant log output

Max. Concurrency: 1

Operating System

WINDOWS SERVER 2019

Selenium version

java 8

What are the browser(s) and version(s) where you see this issue?

Chrome 108.0.5359.125

What are the browser driver(s) and version(s) where you see this issue?

Chrome driver 108.0.5359.71

Are you using Selenium Grid?

4.1.1 to 4.7.2

[github-actions]

@djavvadi, thank you for creating this issue. We will troubleshoot it as soon as we can.

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Thank you!

[diemol]

With Grid 4 we recommend a single Internet Explorer session due to concurrency issues, if you still want to have more sessions, you need to override the default values. Check https://www.selenium.dev/documentation/grid/configuration/cli_options/#node, specifically --max-sessions and --override-max-sessions.

[djavvadi]

This override option worked, Thank you