Multi threaded access requested by thread Thread[pool-2-thread-1,5,main] but is not allowed for language(s) js

Question

I'm converting about 2800 tests from Karate 0.9.6 to Karate 1.1.0. While going through the breaking changes and refactoring the existing tests I'm encountering a lot of tests randomly failing due to the error:

Multi threaded access requested by thread Thread[pool-2-thread-1,5,main] but is not allowed for language(s) js.

These are for different reasons all over the place. Most are from Background steps but not all. Here are a few cases that fail:

* configure headers = { cache-control: 'no-cache' , Accept: 'application/fhir+json' }

* def authToken = callonce read('classpath:com/company/tests/token/AuthToken.feature')

And header Access-Control-Request-Headers = 'Content-Type'

I tried to create a project to duplicate the issue but it seems random. Are there known issues with this?

user_143475 · Answer

I really hope that it is this issue: https://github.com/intuit/karate/issues/1725

Which will be easy to confirm, just upgrade to 1.2.0.RC1

If that doesn't work, that will be extremely bad news and you will have to submit a way to replicate.

And do note that the new JS engine doesn't like Java or JS functions being passed around in callSingle() or callonce: https://github.com/intuit/karate#karatecallsingle (see the paragraph that begins with IMPORTANT:)

Multi threaded access requested by thread Thread[pool-2-thread-1,5,main] but is not allowed for language(s) js

1 Answers