Modify BigQueryCreateExternalTableOperator to use updated hook function

[cswpy]

Fixes: #24160

Modified the unit tests to verify that create_empty_table is called at least once.

---

^ Add meaningful description above

Read the Pull Request Guidelines for more information.
In case of fundamental code change, Airflow Improvement Proposal (AIP) is needed.
In case of a new dependency, check compliance with the ASF 3rd Party License Policy.
In case of backwards incompatible changes please leave a note in a newsfragement file, named {pr_number}.significant.rst, in newsfragments.

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contribution Guide (https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst)
Here are some useful points:

• Pay attention to the quality of your code (flake8, mypy and type annotations). Our pre-commits will help you with that.
• In case of a new feature add useful documentation (in docstrings or in docs/ directory). Adding a new operator? Check this short guide Consider adding an example DAG that shows how users should use it.
• Consider using Breeze environment for testing locally, it’s a heavy docker but it ships with a working Airflow and a lot of integrations.
• Be patient and persistent. It might take some time to get a review or get the final approval from Committers.
• Please follow ASF Code of Conduct for all communication including (but not limited to) comments on Pull Requests, Mailing list and Slack.
• Be sure to read the Airflow Coding style.
  Apache Airflow is a community-driven project and together we are making it better 🚀.
  In case of doubts contact the developers at:
  Mailing List: [email protected]
  Slack: https://s.apache.org/airflow-slack

[cswpy]

@malthe @eladkal @alexInhert I see that issue #24416 is already merged, can we proceed with this PR? Thanks.

[eladkal]

@malthe @eladkal @alexInhert I see that issue #24416 is already merged, can we proceed with this PR? Thanks.

Im away from laptop so cant check but if I rember correctly #24416 changed the name of the function that you import so you need to rebase and apply the needed changes here.

[cswpy]

I feel like I did something wrong here... not exactly familiar with the workflow to rebase. I first rebased my commit to the latest apache remote branch and then pulled changes from my remote branch, lastly made mods to the PR. Not sure why my code does not pass the up-to-date checker, can anyone advise what to do next? Many thanks.

[potiuk]

Rebasing is easiest with drop-down next to "Update branch". button. See the instructions on rebase in our CONTRIBUTING docs https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst#id14 they have all details @cswpy . The worst case - take your changes and re-apply them manually on top of main if you are somehow lost with your branch. you can start a new PR and close this one - no problem with that.

[cswpy]

@potiuk I think it's ready to merge now :) Thanks for the tips.

[potiuk]

The test is failing I am afraid

[github-actions]

The PR is likely OK to be merged with just subset of tests for default Python and Database versions without running the full matrix of tests, because it does not modify the core of Airflow. If the committers decide that the full tests matrix is needed, they will add the label 'full tests needed'. Then you should rebase to the latest main or amend the last commit of the PR, and push it with --force-with-lease.

[potiuk]

Still docs and tests failing. Please fix and rebase it :)

[cswpy]

@eladkal @potiuk I believe the PR is ready to be merged😀

[cswpy]

Now the PR is failing some checks... I believe this is due to the new commits that has already merged into main, where I rebased my commit onto. Can you advise me on how to proceed? Thanks

[potiuk]

Just continue rebasing. It's unlikely broken tests will stay broken for a long time they are usually fixed quickly. You were just unlucky when you hit them.

[cswpy]

Hi @potiuk , all checks passed 😃

[boring-cyborg]

Awesome work, congrats on your first merged pull request!