parallel:rake, "Don't know how to build task..."

[lunulu]

We decided to update parallel_tests from version 2.29.2 to the latest. But we encountered the following error. Do newer versions use different syntax?

$ time bundle exec rake parallel:rake["db:create db:schema:load db:migrate db:test:prepare schedule:create schedule:schema:load pg_log:drop pg_log:create pg_log:schema:load",8]
rake aborted!
Don't know how to build task 'db:create db:schema:load db:migrate db:test:prepare schedule:create schedule:schema:load pg_log:drop pg_log:create pg_log:schema:load' (See the list of available tasks with `rake --tasks`)
/usr/local/bundle/gems/rake-13.2.1/exe/rake:27:in `<top (required)>'
(See full trace by running task with --trace)

[grosser]

that's a lot of versions :D
idk when this would have changed, good chance it's some random refactor that expected there to only be a single task name
... can you try a few inbetween versions to narrow it down to 1 specific version ?
... or check the code for a place where we should add a task.split(" ").each { |task|

[reist]

Wasn't this on purpose?
I remember stalling for a while on upgrading the gem because of pull #857 in the 3.9 release

[lunulu]

Yes, I've checked. It's 3.9.0

[lunulu]

Soo, how to execute this command now? Write a cycle in sh?

[grosser]

the api you are using seems valid, so we should change the code to support it

[grosser]

this could do it:

      ParallelTests::Tasks.run_in_parallel([ParallelTests::Tasks.rake_bin, task_name], args)
->
      ParallelTests::Tasks.run_in_parallel([ParallelTests::Tasks.rake_bin, *task_name.split(" ")], args)

[grosser]

can you try that locally ?

[lunulu]

Using 4.6.1

[grosser]

I'm more thinking bundle open parallel_tests and then change the source and retry
if it's tricky/not-working I can take a look soon ™️

[lunulu]

Sorry, I don't understand what needs to be done. So help with this please

[grosser]

run bundle open parallel_tests and change that line in lib/parallel_tests/tasks.rb then try again
if this you get stuck I'll try to reproduce/fix later, just stay on old version a bit longer ...

[lunulu]

1. Initial fix
   

2. Changed rake_bin to rails_env
   

3. Changed task_name to args.command
   

[grosser]

kk, I'll take a look when I can find some time 👍