made the error more informative for #6556

[venom1204]

In this i have made the error popping out to ber more informative by two things

Which column(s) are missing.
Which data.table is missing the column(s).
Closes #6556

[venom1204]

Hi @aitap,
I hope you’re doing well! I’m currently facing some challenges with the atime performance test, and I could use your guidance.
Sorry for the disturbance, but if you have a moment, could you please help me figure out how to resolve this? I’d really appreciate your insights.
Thank you so much for your support!

[aitap]

It looks like the atime tests will only work with branches created inside the Rdatatable/data.table repository, not the outside forks. Unless you are a member of a team with write access to create new branches, there may be nothing you can fix.

Apologies for the poke, @Anirban166, could you help with this? If this is not by design (e.g. performance tests are relatively expensive and therefore must be run only from local branches), could the action create a local branch from refs/pull/<ID>/head instead of relying on ${GITHUB_HEAD_REF} (which seems to contain the branch name from the remote repository)?

[venom1204]

Hi @MichaelChirico,
Apologies for the interruption, but could you kindly take a look at the issue with the atime performance tests? I’m running into an error, and it seems to be related to how the tests are triggered for pull requests from external forks.
If you could provide any guidance on how to resolve this, it would be greatly appreciated. Your help would mean a lot as I navigate this issue!

[MichaelChirico]

You can ignore the atime issue

[venom1204]

@MichaelChirico thanks for the clarification
can you please review the changes in the pr.